Installation Manual Apha Rt

8/9/2019 Installation Manual Apha Rt

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GE Healthcare

Alpha RTInstallation Instructions

32551-IMG rev 6

0459


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Copyright Code: 32551-IMG rev 6 Date: 12/2010

Copyright 2010 by General Electric Company Inc. All rights reserved.

Manufactured by GE Hungary Kft.

2040 Budars, Akron u. 2HUNGARYTel:+ 36 23 410 000Fax:+ 36 23 410 193

GE Hungary Kft., a General Electric company, going to market as GEHealthcare.

Documentation, trademark and the software are copyrighted with allrights reserved. Under the copyright laws the documentation may not be

copied, photocopied, reproduced, translated, or reduced to any electronicmedium or machine readable form in whole or part, without the priorwritten permission of GE Healthcare.

The original language of this manual is English.

General Electric Company reserves the right to make changes inspecification and features shown herein, or discontinue the productdescribed at any time without notice or obligation. Contact your GErepresentative for the most current information.

Internet and Service: http://www.gehealthcare.com/worldwide.html

This manual applies to Alpha RT units with software version 7.71a and up.


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32551-IMG rev 6 GE Healthcare i

Table of Contents1 Introduction ..............................................................................................................1

1.1 General safety information.........................................................................................................................1

1.2 Language warning..........................................................................................................................................32 Preinstallation instructions....................................................................................9

2.1 Space requirements .......................................................................................................................................92.2 Strength/durability requirements for the wall and floor ............................................................102.3 Electrical supply requirements...............................................................................................................102.4 Environmental requirements...................................................................................................................112.5 Installations requirements & environment control.......................................................................112.6 Tools needed for installation ...................................................................................................................112.7 Test equipment needed for installation .............................................................................................122.8 Transportation of an assembled unit ..................................................................................................12

2.9 Unpacking the unit.......................................................................................................................................122.10 Unpacking the column with the carriage.......................................................................................... 132.11 Unpacking the C-arm..................................................................................................................................152.12 Unpacking the counterweight....... .........................................................................................................152.13 Unpacking the accessories ......................................................................................................................162.14 Unpacking the base plate......................................................................................................................... 16

3 Installation ..............................................................................................................17

3.1 Installation of the counterweight..........................................................................................................173.2 Installation of the column to the wall..................................................................................................19

3.2.1 Attachment holes .........................................................................................................................................19

3.2.2 Attachment of the column brackets....................................................................................................203.2.3 Lifting the column - minimum 2 people.............................................................................................21

3.3 Installation of the column to the base plate ....................................................................................213.4 Localized unit label attachment ............................................................................................................233.5 Installation of the c-arm............................................................................................................................24

3.5.1 Preparing the carriage ...............................................................................................................................243.5.2 Preparing the C-arm....................................................................................................................................243.5.3 Attaching the C-arm....................................................................................................................................24

3.6 Attachment of the control panel ...........................................................................................................263.7 Attachment of the pedals .........................................................................................................................283.8 Radiation shield assembly and installation......................................................................................28

3.9 Mains plug installation ...............................................................................................................................293.10 Testing the control functions...................................................................................................................30

4 Alpha RT softstart procedure ..............................................................................37

4.1 Prerequisites....................................................................................................................................................374.2 Removal of the side covers ......................................................................................................................374.3 Removal of the top cover..........................................................................................................................384.4 Removal of the bottom cover .................................................................................................................384.5 Removal of the back cover.......................................................................................................................394.6 Preventing X-rays (for example in exhibition) ..................................................................................394.7 Transformer voltage tapping ..................................................................................................................40

4.8 Powering up.....................................................................................................................................................404.9 Anode run voltage check (Pr#57 Ano) or adjustment to 50 Hz mains network ..............404.10 Preheat and mA-regulation check........................................................................................................42


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ii GE Healthcare 32551-IMG rev 6

4.11 kV- regulation check....................................................................................................................................44

5 Setups, alignments and adjustments.................................................................47

5.1 Setup, alignment and adjustment prior to use...............................................................................475.1.1 Initial setups ....................................................................................................................................................475.1.2 Setup Info Printout and printer/PC connection #62 InF .............................................................48

5.1.3 Service menu program #52 SUP ...........................................................................................................505.1.4 Service menu program #53 PAr.............................................................................................................535.1.5 Service menu program #64 AEC ...........................................................................................................565.1.6 Service menu program #65 tAr..............................................................................................................605.1.7 Error and exposure counters (Pr#58 CEC).........................................................................................625.1.8 Adjustment procedure during the installation................................................................................62

5.2 Alignment & adjustment............................................................................................................................635.2.1 Recommended test equipment .............................................................................................................635.2.2 Film processor evaluation ........................................................................................................................635.2.3 C-arm brake adjustment...........................................................................................................................645.2.4 C-arm angle display calibration (Pr#54 Can)...................................................................................66

5.2.5 Compression force display calibration (Pr#55 Cfo).......................................................................665.2.6 Compression thickness display calibration (Pr#56 Cth)..............................................................675.2.7 Compression force and speed adjustment with ECS...................................................................685.2.8 The mechanical compression limit.......................................................................................................715.2.9 kV, mAs and exposure time test ............................................................................................................735.2.10 Light field intensity adjustment..............................................................................................................745.2.11 X-ray field alignment...................................................................................................................................745.2.12 Light field alignment....................................................................................................................................755.2.13 Grid alignment and speed adjustment (Pr#61 bUC).....................................................................765.2.14 AEC adjustment .............................................................................................................................................775.2.15 Adjusting the AEC board............................................................................................................................825.2.16 Adjusting the optical density (=O.D)......................................................................................................835.2.17 Thickness compensation adjustment .................................................................................................855.2.18 kV compensation ..........................................................................................................................................865.2.19 Density programming.................................................................................................................................87

6 Alpha RT installation step by step ......................................................................89

6.1 Software block diagram ............................................................................................................................89


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1 Introduction

32551-IMG rev 6 GE Healthcare 1

1 Introduction

Term Alpha RT in this manual refers to Alpha RT MGF-101 unit.

1.1 GENERALSAFETYINFORMATION

NOTE!

Only engineers trained by GE Healthcare are allowed to install the unit.parts installed by nontrained personnel carry no warranty!

CAUTION!

Always check for proper seating on all the connectors located in the areas

you have worked. equipment damage can result if power is applied orexposures made with improperly seated connectors!

WARNING!

Always install the proper fuses into the unit. failure to do so jeopardizespatient, operator and equipment safety.

WARNING!This unit has floating grounds. always make all scope measurementsdifferentially and always be careful when servicing the unit!

CAUTION!

When handling circuit boards, always utilize ground wrist straps orgrounding kits to prevent damage to the mos type chips. always keepcircuit boards in a static proof bag.

WARNING!

Always disconnect the unit from line supply by removing the plug fromwall outlet before opening the covers.

WARNING!

The X-ray tube utilizes a beryllium window. do not perform any operationson beryllium which produce dust or fumes, such as grinding, grit blasting

or acid cleaning. beryllium dust or fumes are highly toxic and breathingthem can result in serious personal injury or death.


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1 Introduction

2 GE Healthcare 32551-IMG rev 6

WARNING!

This X-ray unit may be dangerous to patient and operator unless safeexposure factors and instructions are observed!

WARNING!

Electric safety: Use fault current protection connector box between unitpower plug and mains. High voltage tank and high voltage connectors aredangerous areas in the that require special attention as well as 220 VACpresent on Inverter Board, AMD Board and fan connectors.

NOTE!

This unit has been tested at 60 Hz. If the unit will be installed to 50 Hzmains network, refer to Chapter 5.2.10, Light field intensity adjustmentforcollimator light field intensity adjustment and Chapter 4.9, Anode runvoltage check (Pr#57 Ano) or adjustment to 50 Hz mains network foranode run voltage adjustment.


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1 Introduction


1.2 LANGUAGEWARNING

(BG)

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(ZH-CN)

(ZH-HK)

(ZH-TW)

UPOZORENJE(HR)

Ovaj servisni prirunik dostupan je na engleskom jeziku. Ako davatelj usluge klijenta treba neki drugi jezik, klijent je

duan osigurati prijevod. Ne pokuavajte servisirati opremu ako niste u potpunosti

proitali i razumjeli ovaj servisni prirunik. Zanemarite li ovo upozorenje, moe doi do ozljede davatelja

usluge, operatera ili pacijenta uslijed strujnog udara, mehanikihili drugih rizika.

VSTRAHA

(CS)

Tento provozn nvod existuje pouze v anglickm jazyce. V ppad, e extern sluba zkaznkm potebuje nvod v

jinm jazyce, je zajitn pekladu do odpovdajcho jazykakolem zkaznka.

Nesnate se o drbu tohoto zazen, ani byste si peetlitento provozn nvod a pochopili jeho obsah.

V ppadnedodrovn tto vstrahy me dojt k porannpracovnka prodejnho servisu, obslunho personlu nebopacientvlivem elektrickho proudu, respektive vlivemmechanickch i jinch rizik.


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1 Introduction


ADVARSEL(DA)

Denne servicemanual findes kun p engelsk. Hvis en kundes tekniker har brug for et andet sprog end engelsk,

er det kundens ansvar at srge for oversttelse. Forsg ikke at servicere udstyret uden at lse og forst denne

servicemanual. Manglende overholdelse af denne advarsel kan medfre skade

p grund af elektrisk std, mekanisk eller anden fare forteknikeren, operatren eller patienten.

WAARSCHUWING(NL)

Deze onderhoudshandleiding is enkel in het Engels verkrijgbaar. Als het onderhoudspersoneel een andere taal vereist, dan is de

klant verantwoordelijk voor de vertaling ervan. Probeer de apparatuur niet te onderhouden alvorens deze

onderhoudshandleiding werd geraadpleegd en begrepen is. Indien deze waarschuwing niet wordt opgevolgd, zou het

onderhoudspersoneel, de operator of een patint gewondkunnen raken als gevolg van een elektrische schok,mechanische of andere gevaren.

WAARSCHUWING(NL-BE)

Deze onderhoudshandleiding is alleen beschikbaar in het Engels. Als het onderhoudspersoneel van de klant een andere taal dan

Engels vereist, is de klant verantwoordelijk voor de vertalingervan.

Probeer de apparatuur niet te onderhouden voordat u dezeonderhoudshandleiding hebt geraadpleegd en begrepen.

Het niet opvolgen van deze waarschuwing kan ertoe leiden dathet onderhoudspersoneel, de operator of een patint gewondraakt als gevolg van een elektrische schok, mechanische ofandere gevaren.

WARNING(EN)

This service manual is available in English only.

If a customer's service provider requires a language other thanenglish, it is the customer's responsibility to provide translationservices.

Do not attempt to service the equipment unless this servicemanual has been consulted and is understood.

Failure to heed this warning may result in injury to the serviceprovider, operator or patient from electric shock, mechanical orother hazards.

HOIATUS(ET)

See teenindusjuhend on saadaval ainult inglise keeles Kui klienditeeninduse osutaja nuab juhendit inglise keelest

erinevas keeles, vastutab klient tlketeenuse osutamise eest.

rge ritage seadmeid teenindada enne eelnevalt kesolevateenindusjuhendiga tutvumist ja sellest aru saamist. Kesoleva hoiatuse eiramine vib phjustada teenuseosutaja,

operaatori vi patsiendi vigastamist elektrilgi, mehaanilise vimuu ohu tagajrjel.

VAROITUS(FI)

Tm huolto-ohje on saatavilla vain englanniksi. Jos asiakkaan huoltohenkilst vaatii muuta kuin

englanninkielist materiaalia, tarvittavan knnksenhankkiminen on asiakkaan vastuulla.

l yrit korjata laitteistoa ennen kuin olet varmasti lukenut jaymmrtnyt tmn huolto-ohjeen.

Mikli tt varoitusta ei noudateta, seurauksena voi olla

huoltohenkilstn, laitteiston kyttjn tai potilaanvahingoittuminen shkiskun, mekaanisen vian tai muunvaaratilanteen vuoksi.


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1 Introduction


ATTENTION(FR)

Ce manuel dinstallation et de maintenance est disponibleuniquement en anglais. Si le technicien d'un client a besoin de ce manuel dans une

langue autre que l'anglais, il incombe au client de le fairetraduire.

Ne pas tenter d'intervenir sur les quipements tant que cemanuel dinstallation et de maintenance n'a pas t consult etcompris.

Le non-respect de cet avertissement peut entraner chez letechnicien, l'oprateur ou le patient des blessures dues desdangers lectriques, mcaniques ou autres.

WARNUNG(DE)

Diese Serviceanleitung existiert nur in englischer Sprache. Falls ein fremder Kundendienst eine andere Sprache bentigt,

ist es Aufgabe des Kunden fr eine entsprechende bersetzungzu sorgen.

Versuchen Sie nicht diese Anlage zu warten, ohne dieseServiceanleitung gelesen und verstanden zu haben.

Wird diese Warnung nicht beachtet, so kann es zu Verletzungendes Kundendiensttechnikers, des Bedieners oder des Patientendurch Stromschlge, mechanische oder sonstige Gefahrenkommen.

(EL)

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FIGYELMEZTETS(HU)

Ezen karbantartsi kziknyv kizrlag angol nyelven rhetel. Ha a vevszolgltatja angoltl eltrnyelvre tart ignyt, akkor

a vevfelelssge a fordts elkszttetse. Ne prblja elkezdeni hasznlni a berendezst, amg a

karbantartsi kziknyvben lertakat nem rtelmeztk. Ezen figyelmeztets figyelmen kvl hagysa a szolgltat,

mkdtetvagy a beteg ramts, mechanikai vagy egybveszlyhelyzet miatti srlst eredmnyezheti.

AVRUN(IS)

essi jnustuhandbk er aeins fanleg ensku. Ef a jnustuveitandi viskiptamanns arfnast annas

tungumls en ensku, er a skylda viskiptamanns a skaffatungumlajnustu.

Reyni ekki a afgreia tki nema a essi jnustuhandbkhefur veri skou og skilin.

Brot sinna essari avrun getur leitt til meisla jnustuveitanda, stjrnanda ea sjklings fr raflosti, vlrnuea rum httum.


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1 Introduction


AVVERTENZA(IT)

Il presente manuale di manutenzione disponibile soltanto in linguainglese. Se un addetto alla manutenzione richiede il manuale in una

lingua diversa, il cliente tenuto a provvedere direttamente allatraduzione.

Procedere alla manutenzione dell'apparecchiatura solo dopoaver consultato il presente manuale ed averne compreso ilcontenuto.

Il mancato rispetto della presente avvertenza potrebbe causarelesioni all'addetto alla manutenzione, all'operatore o ai pazientiprovocate da scosse elettriche, urti meccanici o altri rischi.

(JA)

(KO)

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BRDINJUMS(LV)

apkopes rokasgrmata ir pieejama tikai angu valod. Ja klienta apkopes sniedzjam nepiecieama informcija citvalod, klienta pienkums ir nodroint tulkojumu.

Neveiciet aprkojuma apkopi bez apkopes rokasgrmatasizlasanas un sapraanas.

brdinjuma neievroanas rezulttvar rasties elektrisksstrvas trieciena, mehnisku vai citu faktoru izraistu traumurisks apkopes sniedzjam, operatoram vai pacientam.

SPJIMAS(LT)

is eksploatavimo vadovas yra tik anglkalba. Jei kliento paslaugtiekjas reikalauja vadovo kita kalba ne

angl, suteikti vertimo paslaugas privalo klientas. Nemginkite atlikti rangos technins prieiros, jei

neperskaitte ar nesupratote io eksploatavimo vadovo. Jei nepaisysite io spjimo, galimi paslaugtiekjo,

operatoriaus ar paciento sualojimai dl elektros oko,mechaniniar kitpavoj.

ADVARSEL(NO)

Denne servicehndboken finnes bare p engelsk. Hvis kundens serviceleverandr har bruk for et annet sprk, er

det kundens ansvar srge for oversettelse. Ikke forsk reparere utstyret uten at denne servicehndboken

er lest og forsttt. Manglende hensyn til denne advarselen kan fre til at

serviceleverandren, operatren eller pasienten skades p

grunn av elektrisk stt, mekaniske eller andre farer.


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1 Introduction


OSTRZEENIE(PL)

Niniejszy podrcznik serwisowy dostpny jest jedynie w jzykuangielskim. Jeli serwisant klienta wymaga jzyka innego niangielski,

zapewnienie usugi tumaczenia jest obowizkiem klienta. Nie prbowaserwisowaurzdzenia bez zapoznania siz

niniejszym podrcznikiem serwisowym i zrozumienia go. Niezastosowanie sido tego ostrzeenia moe doprowadzido

obraeserwisanta, operatora lub pacjenta w wyniku poraeniaprdem elektrycznym, zagroenia mechanicznego bdinnego.

ATENO(PT-BR)

Este manual de assistncia tcnica encontra-se disponvelunicamente em ingls. Se outro servio de assistncia tcnica solicitar a traduo

deste manual, caber ao cliente fornecer os servios detraduo.

No tente reparar o equipamento sem ter consultado ecompreendido este manual de assistncia tcnica.

A no observncia deste aviso pode ocasionar ferimentos no

tcnico, operador ou paciente decorrentes de choques eltricos,mecnicos ou outros.

ATENO(PT-PT)

Este manual de assistncia tcnica s se encontra disponvel emingls.

Se qualquer outro servio de assistncia tcnica solicitar estemanual noutro idioma, da responsabilidade do cliente forneceros servios de traduo.

No tente reparar o equipamento sem ter consultado ecompreendido este manual de assistncia tcnica.

O no cumprimento deste aviso pode colocar em perigo asegurana do tcnico, do operador ou do paciente devido achoques elctricos, mecnicos ou outros.

ATENIE(RO)

Acest manual de service este disponibil doar n limba englez. Dacun furnizor de servicii pentru clieni necesito altlimb

dect cea englez, este de datoria clientului sfurnizeze otraducere.

Nu ncercai sreparai echipamentul dect ulterior consultrii inelegerii acestui manual de service.

Ignorarea acestui avertisment ar putea duce la rnireadepanatorului, operatorului sau pacientului n urma pericolelorde electrocutare, mecanice sau de altnatur.

!

(RU)

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1 Introduction


UPOZORENJE(SR)

Ovo servisno uputstvo je dostupno samo na engleskom jeziku. Ako klijentov serviser zahteva neki drugi jezik, klijent je duan da

obezbedi prevodilake usluge. Ne pokuavajte da opravite ureaj ako niste proitali i razumeli

ovo servisno uputstvo. Zanemarivanje ovog upozorenja moe dovesti do povreivanja

servisera, rukovaoca ili pacijenta usled strujnog udara ili meha-nikih i drugih opasnosti.

UPOZORNENIE(SK)

Tento nvod na obsluhu je k dispozcii len v anglitine. Ak zkaznkov poskytovatesluieb vyaduje in jazyk ako

anglitinu, poskytnutie prekladateskch sluieb jezodpovednosou zkaznka.

Nepokajte sa o obsluhu zariadenia, km si nepretate nvodna obluhu a neporozumiete mu.

Zanedbanie tohto upozornenia me spsobizranenieposkytovatea sluieb, obsluhujcej osoby alebo pacientaelektrickm prdom, mechanick alebo in ohrozenie.

ATENCION(ES)

Este manual de servicio slo existe en ingls. Si el encargado de mantenimiento de un cliente necesita unidioma que no sea el ingls, el cliente deber encargarse de latraduccin del manual.

No se deber dar servicio tcnico al equipo, sin haberconsultado y comprendido este manual de servicio.

La no observancia del presente aviso puede dar lugar a que elproveedor de servicios, el operador o el paciente sufran lesionesprovocadas por causas elctricas, mecnicas o de otranaturaleza.

VARNING

(SV)

Den hr servicehandboken finns bara tillgnglig p engelska. . Om en kunds servicetekniker har behov av ett annat sprk n

engelska, ansvarar kunden fr att tillhandahllaversttningstjnster.

Frsk inte utfra service p utrustningen om du inte har lstoch frstr den hr servicehandboken.

Om du inte tar hnsyn till den hr varningen kan det resultera iskador p serviceteknikern, operatren eller patienten till fljd avelektriska sttar, mekaniska faror eller andra faror.

OPOZORILO(SL)

Ta servisni prironik je na voljo samo v anglekem jeziku. e ponudnik storitve stranke potrebuje prironik v drugem

jeziku, mora stranka zagotoviti prevod. Ne poskuajte servisirati opreme, e tega prironika niste v

celoti prebrali in razumeli. e tega opozorila ne upotevate, se lahko zaradi elektrinegaudara, mehanskih ali drugih nevarnosti pokoduje ponudnik sto-ritev, operater ali bolnik.

DIKKAT(TR)

Bu servis klavuzunun sadece ingilizcesi mevcuttur. Eer mteri teknisyeni bu klavuzu ingilizce dnda bir baka

lisandan talep ederse, bunu tercme ettirmek mteriye der. Servis klavuzunu okuyup anlamadan ekipmanlara mdahale

etmeyiniz. Bu uyar ya uyulmamas, elektrik, mekanik veya dier

tehlikelerden dolayteknisyen, operatr veya hastannyaralanmasna yol aabilir.


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2 Preinstallation instructions


2.2 STRENGTH/DURABILITYREQUIREMENTSFORTHEWALLANDFLOOR

If the device is mounted on a wall, the pulling force exerted on each bolt isapproximately 600 N (135 lbs). The load on the floor is approximately 7350

kg/sq.m (1500 lb/sq.ft).If the device is mounted on a base plate, the load on the floor isapproximately 600 kg/sq.m (122 lb/sq.ft).

2.3 ELECTRICALSUPPLYREQUIREMENTS

NOTE!

Operating Range 198 to 242VAC. Line voltages measuring less than 208VAC may require a line boost transformer.

Line Voltage 220 VAC (nominal)(tap selection 220, 240 or 260 VAC)

Line Regulation 2% (full load)

Phase single phase (Line, Neutral,Protective Ground or L1, L2,Protective Ground)

Frequency 50/60Hz

Current stand-by 1A

maximum 20 Ainstantaneous peak 30 ABranch Circuit: dedicated Line,Neutral, Protective Ground 2.5mm2(L1 and L2 10 AWG, stranded wire,continuous run)circuit breaker 20 A, 2-pole(outlet per local code requirementsor NEMA 6-20)VDE Wall plug is included

Grounding dedicated, wired (not conduit)

0-potential (earth) groundStandard outlet (220/120V/15A) required for any

optional accessories


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2.7 TESTEQUIPMENTNEEDEDFORINSTALLATION Digital True RMS Multimeter Oscilloscope Compression force gauge (bathroom scale) Densitometer

Acrylic blocks 2x10mm, 2x20mm Sensitometer Lux-meter 0.1mm Al plates (in USA) Radiation meter for mammo to measure dose kV meter for mammo (Unfors, RTI, PMX-I/M or equivalent)

2.8 TRANSPORTATIONOFANASSEMBLEDUNIT

The C-arm has to be removed if the mammography system is transportedin a car or longer distances.

The carriage of the unit does not tolerate additional stress from suchtransportation.

2.9 UNPACKINGTHEUNIT

The standard unit delivery comprises three (four in base plate installation)crates (check that they have the same serial number) of the followingdimensions and with these contents:

NOTE!

The crate numbers in the packing list may differ from the numbers listedhere.

Crate 1:

2290 x 520 x 410 mm (90 3/16 x 20 1/2 x 16 3/16) cardboard gross weight approximately 89 kg (196 lb) Alpha stand and column assembly

Crate 2:

1190 x 550 x 710 mm (46 7/8 x 21 5/8 x 28) cardboard gross weight approximately 52 kg (115 lb) C-arm assembly

Crate 3:

1150 x 230 x 200 mm (45 5/16 x 9 x 7 7/8) wooden gross weight: without ECS approximately 92 kg (203 lb), with ECS

approximately 104 kg (230 lb) counterweight (with or without additional counterweight for ECS)


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Crate 4 (if ECS delivered with the unit ordered):

770 x 640 x 460 mm (30 5/16 x 25 3/16 x 18 1/8) cardboard gross weight approximately 20 kg (44 lb) ECS mechanism

Crate 5 (this will be crate 4 if ECS is not delivered with the unit): 460 x 320 x 370 mm (18 1/8 x 12 5/8 x 14 9/16) cardboard gross weight approximately 8 kg (17.64 lb) accessories

In addition to these, one or more of the following may be received:

Crate 6 (this will be crate 5 if ECS is not delivered with the unit):

870 x 710 x 170 mm (34 5/16 x 28 x 6 11/16) wooden gross weight approximately 68 kg (150 lb) base plate

2.10 UNPACKINGTHECOLUMNWITHTHECARRIAGE cut the packing straps unscrew Phillips screws open the fastened cover remove the supporting brackets by loosening the bolts outside the

crate remove the cardboard box including wall mount installation kit remove the ECS board from carriage to prevent damage when

lifting up the column remove all accessories remove the carriage locking bracket lift out the column and

carriage lay the column down with the c-arm axle against the floor. Be

careful with the cables coming out not to damage them


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Fig 2.2. Column with carriage

NOTE!

The crate includes the packing list. Make sure that you have received allitems.


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2.11 UNPACKINGTHEC-ARM cut the packing straps unscrew Phillips screws open the fastened cover lift out the security box with the C-arm

remove the supporting bracket by loosening the bolt inside thecrate remove the nuts securing the metal packing bracket to the crate lift out the C-arm remove the packing bracket from the C-arm.

CAUTION!

The bolts holding the bracket are not meant to be used as attachmentbolts (they are too long). Attachment bolts are supplied separately in aplastic bag.

Fig 2.3. C-arm packing

2.12 UNPACKINGTHECOUNTERWEIGHT cut the packing straps unscrew Phillips screws open the fastened cover remove the spacing boards and lay them next to the crate

turn the crate over onto the spacing boards lift the empty crate off the counterweight


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CAUTION!

The counterweight is heavy (appr. weight 100 kg or 220 lbs). Getassistance to handle it, and be extreme careful.

2.13 UNPACKINGTHEACCESSORIES cut the packing straps unscrew Phillips screws open the fastened cover

2.14 UNPACKINGTHEBASEPLATE cut the packing straps unscrew Phillips screws open the fastened cover

remove the support pieces

Fig 2.4. Base plate packing


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3 Installation


3 Installation

3.1 INSTALLATIONOFTHECOUNTERWEIGHT

WARNING!

If the carriage or counterweight moves resulting cable movement overthe pulley of the vertical motor, there is a risk to damage the pulley ordrive motor assembly (Fig. 2.5). Specifically the fiber gear inside the motorassembly can be damaged. Please follow the instructions for lifting thecolumn.

As the column is heavy, it will require at least two people to install it.

1 Move the column crateinto position so thatwhen the column islifted out, it canimmediately be riseninto its final position.

2 Lift the column out ofthe crate and rest it onthe C-arm crate withthe center axle pointedto the bottom. Be sureto set the column onsome soft material toprevent scratches.

3 Loosen the boltsholding the top cap inposition. See Ain figure3.1, Vertical motor andcables.

4 Slide the top cap awayfrom the column. Checkthat the cables are nottwisted or crossed.

5 Remove thecounterweightmechanical stop plateby removing screws Bin figure 3.1, Verticalmotor and cables.

CAUTION!Insert the assembly pin through the holes at both sides of the column, andtape the exposed ends (or use rubber band) to prevent its sliding out.

(D)

A

B

C

(E)

Fig 3.1. Vertical motor and cables


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6 Get some help to slide the counterweight into the column. With thecounterweight inserted (leaving access to the cable bracket), removethe two bolts from one bracket block. See C in figure 3.1, Verticalmotor and cables.

7 Remove the block and slide the cables over the shaft making sure thecables are not twisted or crossed.

8 Replace the bracket block and tighten the bolts. Make sure that thebolts are tight. Slide the counterweight until it contacts the assemblypin. The pin is supporting the counterweight while the column isbeing erected.

9 Install the mechanical stop.

10 Connect the vertical motor cable.

11 Install the top column cap.

12 Slide the carriage down the column until the cables are taut.

13 Verify that the assembly pin installed above is securely fastened to

the column and cannot fall out.14 If wall installation kit is used, go to 3.2, Installation of the column to

the wall. If the installation is done on a base plate, go to 3.3,Installation of the column to the base plate.

WARNING!

The total weight of the column, carriage and the counterweight is nowover 140 kg (390 lbs). Do not lift alone!

WARNING!

Make sure that no articles such screws etc. can fall through to the openspaces between the column and the carriage. Serious problems for theuse of the device may occur.

Open spacesbetween the column

and the carriage


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3.2 INSTALLATIONOFTHECOLUMNTOTHEWALL

3.2.1 Attachment holes

Two 10mm (3/8) attachment bolts and wall plugs are used. Each boltshould be able to take a load of 600 N (135 lbs). Lift up the column againstthe wall and drill the holes like in figure 3.2, Wall attachment holes (Long /short column version). Fix the enclosed plugs in the holes.

Fig 3.2. Wall attachment holes (Long / short column version)

16 5/32

410 mm

2184/1969mm

863/64/779/16

Ifnobaseplate,then

subtract14mm(9/16)


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3.2.2 Attachment of the column brackets

Attach the wall mount bracket and base plate to the column. See figures3.3, Wall mount bracketand 3.4, Base plate.

Fig 3.3. Wall mount bracket

Fig 3.4. Base plate

400220


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3.2.3 Lifting the column - minimum 2 people

CAUTION!

Make sure that the counterweight is resting against the assembly pin and

the carriage is down so that the cables are taut.

1 Lift the column up smoothly so that the counterweight lies on theassembly pin, and attach the wall bracket to the holes in the wall.

WARNING!

The column assembly is heavy. Get assistance and be careful whenerecting the column.

2 Attach the column to the wall with two 10 mm bolts.

3 Check with a water-level that the column is vertical in bothdirections.

CAUTION!

Do not remove the rubber band, holding the cable coming out through theaxle because it helps in installing the C-arm by keeping the cables out ofthe way.

3.3 INSTALLATIONOFTHECOLUMNTOTHEBASEPLATE1 Unpack the base plate and compare its contents to the packing list.

2 Place the base plate in its final position so that the screw holes faceto the rear of the unit.

3 Bolt both side pieces to the base plate making sure they are centeredover the bolt holes. Trace the inside edge of the side plates.

4 Remove enough screws to allow the side pieces to swing out of theway.

5 Install the rubber bumper to the base plate.

CAUTION!

Ensure that the counterweight is resting against the assembly pin and thecarriage is down so that the cables are taut.

CAUTION!

Damage to the surface of the base plate can occur if the column isattempted to walk or slide.

6 Move the column over to the base plate and stand it up on top ofrubber bumper and the traced outline.


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7 Swing one side plate A into position so that it fits into the groove ofthe column (see Figure 3.5, The base plate assembly).

Fig 3.5. The base plate assembly

8 Slide the pressure plate B into the space between the back of thecolumn and the flange on the side plate.

CAUTION!

Plate B is not symmetrical and should be installed so that its widthmatches the column width. Also notice the slot for the cable.

9 Tighten all bolts and check the column with a water-level. Shift thecolumn if necessary and tighten slightly the four bolts for the

pressure plate.

CAUTION!

Do not tighten the pressure plate too much since the counterweight mightjam in the lower position. Use for example 3 Nm tightening torque.

10 Assemble the rear cover plate C.

CAUTION!

The back cover plate C will not fit if the column is not in level.


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3.4 LOCALIZEDUNITLABELATTACHMENT

Units that will be installed in non-english speaking countries must have anadditional language-specific label attached to the unit main label.

NOTE!

Do not yet remove the additional label from the release paper.

1 Practice for correct alignment. Localized text for Date ofmanufacture, MODEL NO, Model name and Ser. NO and graphicalsymbols must be placed over the English original so that the unitspecific data remain visible. Illustration examples below are providedto guide the alignment and attachment.

Original unit main label

Additional translated label

2 Remove the label from the release paper.

3 Attach the label on the unit label as instructed in images above.


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3.5 INSTALLATIONOFTHEC-ARM

3.5.1 Preparing the carriage

Take the slide plate and slide it over the c-arm axle. The rounded side ofthe plate will be facing towards the carriage. Do not tighten the lockscrews to hold the plate in place yet. You will have to set the correctdistance when finally putting the covers on.

3.5.2 Preparing the C-arm

Installing the ECS-mechanics to the c-arm:

1 Remove the c-arm top cover and the small back cover.

2 Place the C-arm on the floor so that it rests on the tube and imagereceptor.

3 Attach the ECSmechanism to the C-arm with six bolts. Seefigure 3.6, Installing theECS mechanism.

(This procedure requires thatthe holes for these bolts arealigned. If it is necessary tomove the ECS mechanism toalign these holes, use avoltage supply, for example aregular 9V battery, to run themotor. Be careful not to run

the mechanism againsteither end).

4 Make sure that themetal plate plate attached to the ECS mechanism is not bent orotherwise damaged.

3.5.3 Attaching the C-arm

1 Lift the C-arm into position by sliding the two upper bolts into thegrooves on the back plate. See figure 3.7, Attachment of the C-arm.Take care that the ends of the cables are free and that the cables donot get bent or pinched.

2 Attach the four lower bolts, and tighten all six attachment bolts.

3 Remove all carriage covers and check all internal spaces for loosehardware, packing materials.

4 Make sure that the circuit boards and connectors are properlyinstalled.

Fig 3.6. Installing the ECS mechanism


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Fig 3.7. Attachment of the C-arm

5 Attach the connectors between the carriage and C-arm according totheir numbers (X10, X11, X17, X18, X20, X61).

6 Connectors AMD X1, AMD X2 and AMD X3 are attached to the anodemotor driver (AMD) board inside the C- arm (X61 is only on Alpha RTmodels). See Figure 3.8, C-arm connectors.

NOTE!

X20 has 10 wires on the Alpha RT.

Fig 3.8. C-arm connectors


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7 Attach the upper cover after all adjustments have been completed.

CAUTION!

It is strongly recommended that you check all the connectors again to

prevent power-on problems.

8 Hang the c-arm to the axle assembly so that the motor enters theaxle.

NOTE!

Be careful not to damage: 1. The motor, 2. The metal plate sticking out ofthe ECS mechanism or 3. Microswitch placed on the side of the ECSmechanism.

9 Tighten the top two bolts to the c-arm and fix the remaining fourbolts.

10 Close the connectors to the c-arm. Check that the bracket relievesstress to the wires in the connectors. See figure 3.9, Securing thecables to the c-arm.

Fig 3.9. Securing the cables to the c-arm

11 Make sure that the metal plate going through the slots of the opticalinterrupters on the ECS Driver Board is correctly positioned and thatthere are no cables entering its pathway when the c-arm moves.

3.6 ATTACHMENTOFTHECONTROLPANEL

NOTE!

If the Alpha ID is used, please read the separate manual.

The base of the control panel is attached on the right side of the unit. Ifdesired, the base can be moved to the other side of the unit or attached toa wall. See Figure 3.10, Control panel attachment.


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Install the control panel by pushing it against the base so that the plasticknob mounts into the hole in the base. Use setscrews to fasten the panelto the base.

Also fasten the exposure button to its place with a setscrew, if required.Attach the cable of the panel to the D connector at the base of the

carriage.

The control may be installed flat to the side of the carriage, or to an anglewith the angled back piece.

Fig 3.10. Control panel attachment


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3.7 ATTACHMENTOFTHEPEDALS

Plug in the footpedals to the connection box in the back of the column.See figure 3.11, Connectors for the pedals.

Fig 3.11. Connectors for the pedals

3.8 RADIATIONSHIELDASSEMBLYANDINSTALLATIONPreparations:

Identify how the Alpha RTunit is mounted - on stationary base plate orwall mounted. If the unit is wall mounted, the wall mount base plate isprovided with holes for the hinge support pieces (Fig. 3.12, Wall mountbase plate and hinge support plate).

Instructions:

Open the crate and compare the contents to the packing list. If thestationary base plate is used, locate the hole provided for the hinge inbase the plate. Drop the sleeve in a hole mount.

Left or right side installation:

1 Press the other plastic sleeve into the large hole on the upper hingebracket.

2 Screw the bracket with M6 screws (2) on top of the column.

3 Put the lower hinge pin into the bottom sleeve.

4 Lift the shield into position, and put the upper pin through the upperhinge bracket into the hinge on the shield.

5 Swing the shield into the desired position. Loosen the shield stop andlower it until it contacts the floor.

6 Tighten the stop screws. If the wheel is used the adjustment is notneeded.

Fig 3.12. Wall mount base plate

and hinge support plate


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3 Installation


7 Attach the shield decal enclosed.

Both side installation:

Use the upper hinge bracket with hinges on both sides. Follow theinstructions given for left or right side installation.

Fig 3.13. Left side installation

3.9 MAINSPLUGINSTALLATION

The unit is delivered without mains plug attached to allow fitting of locallysuitable type of mains connection.

Select suitable min 16A rated mains plug (that complies with localregulations) with ground (PE) connection. A loose IEC type plug is includedin the unit delivery.

When connecting the wires, make sure that the yellow-green PE wire isleft min 10mm longer than the two other ones.


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3.10 TESTINGTHECONTROLFUNCTIONS

1 Provided that you have all the connectors closed, turn the power ofAlpha RT on. Check that the circuit breaker in the back of system is inthe ONposition. Switch power ONusing the main power switch inthe front.

The timer display shows r.ES., kV display Pr, mAs display software versionand density display shows the country code.

Resetting must be acknowledged by pushing the auto expbutton, whichstarts the internal testing routine.

2 Check that all segments of the 7-segment display and LEDs are lit.

C-arm displayshows the software versionof C-arm control board.

3 Install a cassette tunnel for normal film/screen imaging,corresponding diaphragm and a cassette. Notice the cassette type:Normal or Daylight.

Fig 3.14. Patient identification window in a daylight cassette allows the use of Alpha ID II

or other identification system to print the patient data onto the film.

12

3

1 Blue2 Green/Yellow3 Brown


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4 Check that all cassette tunnels, bucky and magnification tunnel areof the right type (Normal or Daylight). Available upgrade kits forcassette holders:

Also, Daylight version can be updated to normal version. Consult factory.

The control panel should give the following indications:

CAUTION!

Do not press the exposure button until all necessary calibrations areperformed.

5 Using the kV+and kV-buttons, increase kV to 35, decrease to 23 kV,and then return to the default kV setting.

6 Using the density+ and density- buttons, increase density to +7,decrease to -7 and then return the setting to 0.

7 Change the filter and notice that the filter does change frommolybdenum to rhodium. Notice that the timer display changes fromnoto rh. Select molybdenum (no) filter.

8 Push the auto expuntil the manual mode is entered, the auto explight and densitydisplay are switched off and the mAs display willindicate 12 mAs.

9 Select 25 kV. Using the mAs+ and mAs-buttons, increase the mAsvalue to 500 (300 in New York installations, 600 in G.B installations),and then decrease the display back down to 80. Go back toautomatic exposure mode by using the auto expbutton.

10 Push the auto relbutton twice. The auto rellight should first switchoff and then back on.

NOTE!

Press the vertical drive control down and remove the assembly pin.

11 Test the vertical drivecontrol switches on both sides of the unit andverify that up and down movements of the carriage starts slowly andthen speeds up as the switch is held down.

31586-IMG Bucky 18x24 upgrade kit for daylight cassette31587-IMG Bucky 24x30 upgrade kit for daylight cassette

31588-IMG Magnification 1.6/1.8/2.0 upgrade kit for daylight cassette31589-IMG Cassette tunnel 24x30 upgrade kit for daylight cassette31591-IMG Cassette tunnel 18x24 upgrade kit for daylight cassette

readylight ON programlight ax-raylight OFF auto explight ON

timerdisplay 000 auto rellight ONkVdisplay 25* gridlight OFF

mAsdisplay AA magnlight OFFdensitydisplay 0

*) Depends on the compression thickness


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12 Test both pedals for compression adjustment. Check that thecompression paddle stops automatically after a pressure ofapproximately 110 N (24 lbs) is reached, with operator adjustmentknob set to minimum. If not, see section Compression force andspeed adjustment.

13 Check that the breast thickness displayand the compression forcechanges when driving the compression down.

14 Check that the field light is switched ON when the down pedal ispushed and goes OFF automatically after approximately 40 seconds.

Fig 3.15. Location of the grid locking screw.

15 Install a bucky and check that the GRID indicator lights up. Removethe grid locking screw before use.

16 Install a magnification table and check that the MAGN indicatorlights up.

17 Turn the c-arm and notice that the reading in the angle display onthe c-arm changes.

CAUTION!

C-arm brake can get stuck during the long storage time. Press the brake

button to release the brake and use enough force to release the C-armrotation.

NOTE!

Following voltage measurements, and the soft start procedureinstructions are for trouble shooting purpose.

18 Verify that the typical voltages listed are present. Refer to repairinstructions in service manual for the location of the test points.

Voltages marked with * are unregulated.


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3 Installation


Checking the ECS:

1 The LEDs H1 (+34V), H2 (+15V), H4 (+5V) and H5 (if the C-arm isshifted) on the ECS Driver Board turn on.

2 The C-arm brake release buttons in the c-arm handles do notoperate if the C-arm is shifted. The brake can be released only if theC-arm is in the lowest position (the photo interrupter has entered theslot and the microswitch on the side of the ECS mechanism isactivated).

SUPPLY BOARD Code 32030-IMG

TP7 to TP1 brake 26 VdcTP7 to TP2 Unreg +34Vdc 33 VdcTP7 to TP4 Vin CPU 23 VdcTP7 to TP5 +AEC in +20 VdcTP7 to TP6 -AEC in -20 VdcTP8 to TP9 lamp (AC volts) 10.5 Vac

CPU BOARD Code 32245-IMG

across diode D3 Vin CPU 5.1 Vdc

C&Z BOARD Code 33035-IMG

TP1 to TP12 Vin C&Z 34 VdcTP2 to TP12 15 VdcTP3 to TP12 Vin bucky 24 VdcTP4 to TP13 Comp low speed ref. adjustable +15 VdcTP5 to TP13 Comp high speed ref. adjustable +15 VdcTP8 to TP9 Comp up/dn 22 Vdc*

TP10 to TP11 Vert up/dn 25 Vdc*

FILAMENT CONTROL BOARD Code 32225-IMGTP12 to TP9 Unreg Dcin 35 Vdc

TP12 to TP10 +Vdc +15 VdcTP12 to TP11 -Vdc -15 Vdc

INVERTER BOARD Code 32220-IMG

TP29 to TP27 +Vdc +15 VdcTP29 to TP30 -Vdc -15 Vdc

C-ARM CONTROL BOARD Code 30310-IMG

TP2 to TP3 +Vdc +5 Vdc


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3 Press C-arm up and C-arm down -buttons on the Driver Boardmomentarily and see that the drive directions are correct. Drive theC-arm down carefully. Make sure that the metal plate enters thephoto interrupter slot and that the movement stops.

WARNING!

The ECS mechanism and the motor will be damaged if the C-arm is drivenagainst a mechanical limit. The movement should be stopped by thephoto interrupter.

4 Drive the C-arm to its upper limit. Check that there is enough slack inthe cables. Make sure that the metal plate enters the photointerrupter slot and that the movement is stopped.

5 Press Return -button and check that the adapter returns to lowestposition from all other positions. The movement can be stopped bypressing the C-arm up or C-arm down buttons.

6 When driven away from the lowest position, check that the c-armbrake does not release. After returning the c-arm, check that thebrake releases again.

7 Check that the foot pedal works:

8 Proceed the installation according to the Installation Instructions andreturn to the ECS installation after the Alpha RT installation isfinished.

9 Install a compression paddle and place something soft on thecassette holder. Compress in the ECS-mode until the compressioncurrent limit is reached. See that the c-arm movement stops as well.

10 Make an exposure and see that the c-arm is returned to the lowest

position after the exposure if the Autorelfunction is selected on theAlpha RT control panel.

Foot pedal switch Action

PADDLE Compression paddle moves downC-ARM C-arm moves up

ECS Compression paddle moves downand C-arm moves up

REL Compression paddle moves up andC-arm down


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Fig 3.16. Adjustment of C-ARM and ECS speed

11 After adjusting the compression paddle speed, adjust the ECS-movement with R37 on ECS board.

12 Press REL pedal to set movements to start position. Press ECS-pedaland adjust the speed from R37 until the dimension between floorlevel and compression paddle does not change.

13 Press the C-ARM-pedal and adjust the C-arm speed from R59 toabout 1cm/1sec.


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4 Alpha RT softstart procedure



4.1 PREREQUISITES

Turn the power off from the main power switch.

CAUTION!

The purpose of this procedure is to ensure that before applying full powerto the generator, all vital signals and adjustments are correct. Use largefocus (MAGN lamp is off).

WARNING!

When installing or removing covers, make sure that no articles suchscrews etc. can fall through to the open spaces between the column andthe carriage. Serious problems for the use of the device may occur.

4.2 REMOVALOFTHESIDECOVERS

1 Remove the side and back covers to expose the circuit boards.

CAUTION!

Do not pull out the side cover, just straight down.

CAUTION!

Side cover tabs are sharp.

Open spacesbetween the columnand the carriage


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Fig 4.1. Removing the side covers

4.3 REMOVALOFTHETOPCOVER

1 Remove the top cover of the C-arm to expose the high voltage unit.

Fig 4.2. Removing the top cover by opening the four screws

4.4 REMOVALOFTHEBOTTOMCOVER

1 Remove the bottom cover of the C-arm to expose the high voltageunit.

Fig 4.3. Removing the bottom cover by opening the four screws


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4.5 REMOVALOFTHEBACKCOVER

1 Remove the back cover to expose the circuit boards.

Fig 4.4. Removing the back cover by opening the four screws

4.6 PREVENTINGX-RAYS(FOREXAMPLEINEXHIBITION)

NOTE!The following three items disconnects all power from the generator, butthe system can be still operated. This can be done for example wheninstalling for an exhibition, where X-rays are not allowed.

1 Unplug connector X1 on the INVERTER Board (a four-pin connector).

2 Set the test switches on both the INVERTER Board and the FILAMENTCONTROL Board to TEST position. Set the jumper X8 on theFILAMENT CONTROL Board to 1-2 position [left-hand position]; (mAfeedback from the filament circuit only).

3 On the FILAMENT CONTROL Board unplug the connector X4 (power to

the filament).4 Turn OFF the unit and plug in the connectors X1 on the INVERTER

board and X4 on the FILAMENT CONTROL board.

5 Set the test switch S1 on the INVERTER board to NORMAL position. Set the jumper X8 on the FILAMENT CONTROL Board to 2-3

position (right-hand position).


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4.7 TRANSFORMERVOLTAGETAPPING

Measure the main voltage and connect the main transformers as in thetable below.

4.8 POWERINGUP

1 Turn the unit ONfrom the mains switch.

NOTE!

The TUBEFAIL led H3 on the FILAMENT CONTROL Board is usually litbefore the first exposure after the unit is switched on. The activation of theEXT signal turns the led off, and after a successful exposure the ledremains off.

2 Check that the display shows reset (r.ES in the timer display), on thePOWER SUPPLY board all LEDs are lit (3 pcs), on the FILAMENTCONTROL board LEDs H8, H9 and H10 are lit, on the INVERTER Board

LEDs H8, H9 and H10 are lit.3 Go into manual mode by pressing Autoexp. Select service mode by

pressing kV- and density- buttons for 3 sec. Select service modemenu by pressing Density+and Density-buttons.

4.9 ANODERUNVOLTAGECHECK(PR#57 ANO) ORADJUSTMENTTO50 HZMAINSNETWORK

NOTE!

All testing should be performed in service mode.

1 Press kV-or kV+buttons to scroll until the kV display shows #57andthe mAs display shows Ano. This is the anode run voltage measuringmode without x-rays. Press Autoexp to enter into Ano program. If youneed to adjust the anode run to 50 Hz mains network, proceed tostep 3.

2 Press exposure button to run anode. Timer display will show runningtime which is limited to 5 seconds. Check that no error messages aredisplayed during that time. After this check that the anode motorplate stops running (listen to the sound of the rotating anode) and

that no error messages are displayed on Control Panel timer-screen.If this is not the case, perform step 3.

Main voltage Transformer connection

198 - 230 220 (factory setting for Europe and U.S.A)

231 - 250 240 (factory setting for G.B and France)

251 - 264 260

Table 4.1 Transformer voltage tapping


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WARNING!

AMD BOARD HAS FLOATING GROUND OF 230 VOLTS

3 Immediately after pressing the exposure button, the testpoints TP1and TP2 located at the edge of the AMD board (X4 pin 2 and X5 pin 2)show voltage of 230V. With a true RMS (Digital Volt Meter) thereadout should be 30-42 VAC after 1.5 seconds (run voltage). It isimportant also that the test #57 is completed without error.

NOTE!

Pay attention to potentiometer setting. It is different for 50 Hz and 60 Hz.

4 If necessary, adjust the anode running voltage with trimmerpotentiometer R100on AMD Board.

5 Exit the test #57 and also the service mode. Test the unit in normalmanual mode with maximum mAs value, repeat exposures for 5times and verify that no error appears.

Fig 4.5. Anode motor drive board (AMD)

6 During the exposure, listen that the first one of the power relays (K1)on the INVERTER board is activated as the exposure button ispressed, and that (K2) is activated after the preheat time, after app.1.5 s.

7 Check also that on the INVERTER Board, the LEDs H2, H4, H5, H6, H7,H11 and H12 and on the FILAMENT CONTROL board, the LEDs H2, H4,

H5, H6 and H7, turn on during the exposure.


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4.10 PREHEATANDMA-REGULATIONCHECK

1 Connect the oscilloscope probe on the FILAMENT CONTROL board totest point TP4(mA feedback, TP12or GND).

2 Check that large focus is on (MAGN led is off, toggle small/large focuswith DEN+ button in service mode) or a bucky or a cassette tunnelattached.

Fig 4.6. Filament control board

3 Set the oscilloscope to 1V/div and 20ms/div. Set the trigger to app.+1V / positive edge (storage mode).

4 Turn ONthe unit. Set the unit to 27kV and 16-40 mAs (large focus).

5 Make an exposure and check the waveform. (see Fig. 2.28).

6 If the mA waveform contains either over- or undershoot at the start-up, adjust from trimmer potentiometer R28 on the Filament controlboard to obtain correct waveform.

NOTE!

The trimmer R28 is for LARGE FOCUS. For SMALL FOCUS, insert themagnification cassette holder to the unit and adjust the preheat fromtrimmer potentiometer R96. Be careful with preheat adjustment. Turn thepotentiometer little by little and check that scope figure will look as inFigures 4.7, Correct preheat, 4.8, Preheat rises too fast "Overshoot"and4.9, Preheat rises too slow.


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CAUTION!

Too slow a rise time will result in an E.01 error message.

Fig 4.7. Correct preheat

Fig 4.8. Preheat rises too fast "Overshoot"


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Fig 4.9. Preheat rises too slow

4.11 KV- REGULATIONCHECK

1 Connect the DVM (averaging - NOT TRMS) on INVERTER BOARD toTP22 and TP25 GND. Set the DVM to 0-10 Vdc range.

2 Set the unit to 28kV and 100 mAs (To get longer exposure time,increase mAs. Make sure that the exposure is long enough for theDVM reading to stabilize).

3 Make an exposure and check the voltage from the DVM during

exposure. It should be 2.80.01Vdc.4 If not, adjust from trimmer potentiometer R63.

NOTE!

kV is set at the factory. For calibration use Unfors, RTI, PMX-I/M or similar


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Fig 4.10. Inverter board


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5 Setups, alignments and adjustments



5.1 SETUP, ALIGNMENTANDADJUSTMENTPRIORTOUSE

5.1.1 Initial setups

In this section the contents of the nonvolatile memory are checked andchanged if necessary. The setup information is available in two programs,PArand SUP. The automatic exposure control information is available inAECand tArprograms.

In the SetUP (prog. #52 SUP) the following is setup:

In the PArameter (prog. #53 PAr) the following is setup:

In the Automatic Exposure Control (prog. #64 AEC) information isavailable:

In the tArget time (prog. #65 tAr) following information is available:

#52 SUP A Compression autorelease time#52 SUP L Label type#52 SUP H Label text

#52 SUP i i/o device#52 SUP F Default filter

#53 PAr S The serial number of the unit#53 PAr C Country code#53 PAr r Tube efficiency in mR/mAs for both filters#53 PAr b Anode brake selection#53 PAr t Software mode and Phototimer modes

#53 PAr I Collimator type (Interlock)#53 PAr d C-arm control board / CD board selection

#64 AEC d Wanted optical density#64 AEC h IQC - kV programming#64 AEC I Target time MIN/MAX automatic exposure#64 AEC c Thickness compensation adjustment#64 AEC g AEC gain - optical density programming

#64 AEC E Full AEC kV programming (Initial kV vs. breastthickness)

#64 AEC U kV compensation adjustment#64 AEC S Density step adjustment

#65 tAr The Alpha RT AA- mode (auto kV) selects the used kVaccording to a target timewhich is programmed for smalland large focus, and for Mo and Rh filtersseparately. Thetarget time depends on the compressed breast thickness

and is a linear curve calculated from two programmedpoints.


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The kV is selected on the basis that the target time for the compressedbreast thickness will be reached. The higher target time will result in lowerselected kV and vice versa.

To enter the service mode:

To enter the service mode press kV-and density-buttons simultaneouslyuntil the Timer display shows Ser.

To enter the special program menu:

To enter the special program menu press density+and density-buttonssimultaneously. The program number is displayed in the kV display andthe program name in the mAs display (Press DEN- first because otherwisethe system may toggle the focal spot with DEN+ key). The availableprograms can be scrolled with the kV+ and kV- buttons. To enter thedesired program press the Autoexp program button. To leave theprogram press Autoexp buttons once more. To leave the menu pressdensity+and density-simultaneously.

Return to the menu from the special programs by pressing AUTOEXPbutton.

NOTE!

See block diagram of software in appendix or service manual.

5.1.2 Setup Info Printout and printer/PC connection #62 InF

Connect a matrix printer or a PC/Laptop to Alpha RT com port. Selectservice program #52SUP with the kV+or kV-buttons. Enter the programpressing the Autoexp button. Press Autoexp to exit program #52SUP.Select service program #62Inf with the kV+or kV-buttons. Press Autoexpto enter the program. The info is printed out immediately. See an exampleof the printout on next page.

The serial connection is an ordinary asynchronous receiver/transmitter(RS-232). The serial port is initialized in Alpha RT as follows:

1200 baud if printer or Alpha ID II is connected 9600 baud if Dataview (or Alpha ID) is connected (in SETUP

parameter i =2) 8,N,1 (8 databits, No parity [always 0], 1 stop bit)

The effect of the no parity bit and the stop bit is a total of two stop bits, soreceiving end must be configured correspondingly.

The data bytes are:

The data can be received with a communications program, for example

Windows (Hyper)Terminal, to PC and printed afterwards on paper, or aprinter can be directly connected to the port.

start 8-bit data 1 stop


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INSTRUMENTARIUM Imaging, MGF 101/110 information, SW v.7.x1a, 5-Feb-2001========================================================================DEVICE#: 05000 ALPHA MODE: RT(5)COUNTRY CODE: 011 ANODE BRAKING IS OFFCARM BOARD: MCURADIATION EFFECIENCY 10.0(Mo), 10.0(Rh) mR/mAs at 25 kVAUTOREL TIME(s): 006 SW gain for AEC-board: 1.00LABEL TYPE: 000 I/O DEVICE: D16+PCLABEL TEXT IS:

IQC multiplier: 1.00 IQC MODE: EXPOSURE WITH 027 kVWANTED DENSITY: 1.30DEFAULT FILTER: MolybdeniumEXPOSURE COUNTER: 0000000ERROR CNT: E01 E02 E03 E04 E07 E08 E09 E10

00000 00000 00000 00000 00000 00000 00012 00000E11 E12 SLO ER1 ER2 ER3 ER4 ER5 EAF SYS00011 00011 00000 00000 00001 00000 00000 00000 00001 00000PROGRAMMED VALUES: Full

BUCKY(Mo) MAGN(Mo) CONTACT(Mo)kV den kV den kV den

A= 00004 00100 00004 00100 00004 00100B= 00004 00100 00004 00100 00004 00100C= 00004 00100 00004 00100 00004 00100

BUCKY(Rh) MAGN(Rh) CONTACT(Rh)kV den kV den kV den

A= 00004 00100 00004 00100 00004 00100B= 00004 00100 00004 00100 00004 00100C= 00004 00100 00004 00100 00004 00100

PROGRAMMED VALUES: SemiBUCKY(Mo) MAGN(Mo) CONTACT(Mo)kV den kV den kV den

A= 00027 00100 00027 00100 00027 00100B= 00027 00100 00027 00100 00027 00100C= 00027 00100 00027 00100 00027 00100

BUCKY(Rh) MAGN(Rh) CONTACT(Rh)kV den kV den kV den

A= 00027 00100 00027 00100 00027 00100B= 00027 00100 00027 00100 00027 00100C= 00027 00100 00027 00100 00027 00100

PROGRAMMED VALUES: ManBUCKY(Mo) MAGN(Mo) CONTACT(Mo)kV mAs kV mAs kV mAs00027 00012 00027 00012 00027 00012BUCKY(Rh) MAGN(Rh) CONTACT(Rh)kV mAs kV mAs kV mAs00027 00012 00027 00012 00027 00012

USER DENSITY STEP: 0.10FULL-AEC TARGET TIME variables + limits:BUCKY: Mo: 0.25 +0.10 0.50 3.50BUCKY: Rh: 0.25 +0.10 0.50 3.50MAGN: Mo: 0.25 +0.30 0.50 5.00MAGN: Rh: 0.25 +0.30 0.50 5.00CONTACT:Mo: 0.25 +0.10 0.50 3.50CONTACT:Rh: 0.25 +0.10 0.50 3.50THICKNESS COMPENSATION variables:BUCKY: Mo: 1.00 1.00 1.00 250 250BUCKY: Rh: 1.00 1.00 1.00 250 250MAGN: Mo: 1.00 1.00 1.00 250 250MAGN: Rh: 1.00 1.00 1.00 250 250CONTACT:Mo: 1.00 1.00 1.00 250 250CONTACT:Rh: 1.00 1.00 1.00 250 250KV COMPENSATION:

kV: 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35BUCKY:Mo: 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100Rh: 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100MAGN:Mo: 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100Rh: 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100CONTACT:Mo: 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100Rh: 100 100 100 100 100 100 098 100 100 100 100 100 100 100 100 100FULL-AEC kV-TABLES:mm: 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95BUCKY:Mo: 23 23 23 23 24 24 24 25 25 25 26 26 26 27 27 27 28 28 29 30Rh: 23 23 23 23 24 24 24 25 25 25 26 26 26 27 27 27 28 28 29 30MAGN:Mo: 25 25 25 25 25 25 25 25 26 26 26 27 27 28 28 28 29 29 30 30Rh: 25 25 25 25 25 25 25 25 26 26 26 27 27 28 28 28 29 29 30 30CONTACT:

Mo: 23 23 23 23 23 23 24 24 24 25 25 25 26 26 26 27 27 27 28 28Rh: 23 23 23 23 23 23 24 24 24 25 25 25 26 26 26 27 27 27 28 28EPROM CHECKSUM: Calc = 05925 Set = 05925


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5.1.3 Service menu program #52 SUP

1 Enter the special program menu.

2 Select with kV+button program number 52 (SUP).

3 Enter the program by pressing the AUTOEXPbutton.

4 Press kV+and check following SUP subprograms:

Sample of a label:

1234567890123456789012345678901234567890B Rh 0.02s 28kV 002mAs +0 HOSPITALxNAMEx6.5cm 200N 180^/R 0.06mGy CODExxxxxxxxxx___/___/___ R1 12345 RADIOLOGISTxxx_________________________ DEPARTMENTxxxx

On row 1 the letter H in HOSPITAL is in character position 00,the letter O inHOSPITAL is in position 01 etc. Remember that a space also consumes aposition.

The first letter in row 2 is C and the character position is 15 and continuesthrough position 29. Row 3 contains positions 30 through 44 and row 4positions 45 through 59. See following the ASCII table and a LabelProgramming Worksheet.

#52SUP/A The density display shows A, which means the Auto ReleaseTimeafter each exposure in seconds.

1 Select a suitable time (normally 6 sec.) using the density-and density+buttons. Make sure that after an exposurethe Autorelease drives the paddle up to the upper limit.

2 Press kV+

#52SUP/L The density display shows L which means the Printer LabelType for technique printout. Select using the density- anddensity+ buttons. The types are:

0 = OFF1 = all data in one row2 = 36.7 x 101 mm label (U.S.A. default)3 = 26.0 x 101 mm label

Press kV+

#52SUP/H The density display shows H which indicates the Input Modeof the text printed on the label. For each of the four rowsprinted, the last 14 of 40 characters can be programmed.See following table for how to program the label.

#52SUP/C A additional compression force with pedal (ON/OFF)B set values (6) for compression force


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Programming of the label

Action Press button Display

Selecting thecharacter positionfrom 00 to 59

mAs+ = one stepto the rightmAs- = one step tothe left

kV display position 00 to59

Selecting the ASCIIcode (see next table)

Density+ = scrollupDensity- = scrolldown

mAs display ASCII code

Table 5.1 Programming of the label

ASCII code and corresponding alphanumerical letter table

0 NUL 32 SP 64 @ 96 ` 128 160 192 + 224 _

1 SOH 33 ! 65 A 97 a 129 161 193 - 225

2 STX 34 " 66 B 98 b 130 162 194 - 226 _

3 ETX 35 # 67 C 99 c 131 163 195 + 227 &

4 EOT 36 $ 68 D 100 d 132 164 196 - 228 _

5 ENQ 37 % 69 E 101 e 133 165 197 + 229 _

6 ACK 38 & 70 F 102 f 134 166 0 198 _ 230 m

7 BEL 39 ' 71 G 103 g 135 167 1 199 _ 231 _

8 BS 40 ( 72 H 104 h 136 168 ) 200 + 232 _

9 HT 41 ) 73 I 105 I 137 169 _ 201 + 233 _

10 LF 42 * 74 J 106 j 138 170 5 202 - 234 _

11 VT 43 + 75 K 107 k 139 171 2 203 - 235 _

12 FF 44 , 76 L 108 l 140 172 3 204 _ 236 _

13 CR 45 77 M 109 m 141 173 ( 205 - 237 _

14 SO 46 . 78 N 110 n 142 174 * 206 + 238 _

15 SI 47 / 79 O 111 o 143 175 + 207 - 239 _

16 DLE 48 0 80 P 112 p 144 176 _ 208 - 240 _

17 DC1 49 1 81 Q 113 q 145 177 _ 209 - 241 "

18 DC2 50 2 82 R 114 r 146 178 _ 210 - 242 _

Table 5.2 ASCII code and corresponding alphanumerical letter table


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Press kV+

19 DC3 51 3 83 S 115 s 147 179 _ 211 + 243 _

20 DC4 52 4 84 T 116 t 148 180 _ 212 + 244 _

21 NAK 53 5 85 U 117 u 149 181 _ 213 + 245 _

22 SYN 54 6 86 V 118 v 150 182 _ 214 + 246 )

23 ETB 55 7 87 W 119 w 151 183 + 215 + 247 _

24 CAN 56 8 88 X 120 x 152 184 + 216 + 248

25 EM 57 9 89 Y 121 y 153 185 _ 217 + 249 $

26 SUB 58 : 90 Z 122 z 154 186 _ 218 + 250 A

27 ESC 59 ; 91 [ 123 { 155 4 187 + 219 _ 251 _

28 FS 60 < 92 \ 124 | 156 , 188 + 220 _ 252 n

29 GS 61 = 93 ] 125 } 157 - 189 + 221 _ 253 5

30 RS 62 > 94 ^ 126 ~ 158 P 190 + 222 _ 254 _

31 US 63 ? 95 _ 127 DEL 159 / 191 + 223 _ 255 SP

Table 5.2 ASCII code and corresponding alphanumerical letter table

Position 00 01 02 03 04 05 06 07 08 09 10 11 12 13

Text

ASCII

Position 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Text

ASCII

Position 28 29 30 31 32 33 34 35 36 37 38 39 40 41

Text

ASCII

Position 42 43 44 45 46 47 48 49 50 51 52 53 54 55

Text

ASCII

Table 5.3 Customized label programming sheet


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5.1.4 Service menu program #53 PAr

1 Select the program number 53 (PAr) with kV+ button.

2 Press AUTOEXP to enter the PAr program.

#52SUP/i The density display shows i. In this mode the RS 232 link canbe programmed.

0 = no connections1 = printer or Alpha ID II connected2 = PC connected (ONLY WITH Alpha ID [Dataview])3 = Delta 16 mode4 = Delta 16 / Alpha ID (Dataview), requires a RS-switcher board

Press kV+

#52SUP/F The density display shows F. This mode determines whichfilter type is selected in the power up. Select the mode usingthe density-and density+keys.

0 = selects automatically the rhodium filter1 = selects automatically the molybdenum filter2 = selects the previously used filter3 = selects the auto-filter mode.Use mAs- and mAs+ keys to determine thecompression thickness (0 - 95 mm in kV display)where the filter changes.

Press kV+

Press Autoexp to leave the SUP program and to enter thespecial program menu.

#53PAr/S The density display shows S, which means the SerialNumber of the Unit. Check that it equals the serial numberon the label under the image receptor support. If not, correctusing the density-and density+buttons.

Press kV+


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#53PAr/C The density display shows C, which means the CountryCode. The country code selects some initial settings that arerequired in different countries. Select the correct code usingdensity-and density+buttons. The codes are:

6 = Asia 12 = Great Britain7= Japan 13 = Scandinavia8 = Michigan State 14 = France9 = New York State 15 = Germany10 = U.S.A. general 16 = Australia11 = Europe

Press kV+

Country code differences GB (12) AUS(16) NY(9) GER(15) MICHIGAN (8)

C-ARM Z and ECS movementsare disabled if compressionpaddle is not in upper homeposition.

X

Compression releasing isinterrupted if compressionforce measurement fails.

X

The compression will beautomatically released 25

seconds after the exposure.

X X

Maximum available voltage34kV.

X

IQC correction range0.75-1.25 (others 0.60 - 1.40).

X

Maximum exposure time: 3s =>maximum mAs: 300 mAs.

X

Maximum exposure time: 6s =>maximum mAs: 600 mAs.

X

If C-arm brake is released, thecompression is released also.

X X

In case of C-arm brake orvertical movement switch isactivated, compression isautomatically released first.

X X

#53PAr/r The density display shows r which means the RadiationEfficiency (mR/mAs) of the tube at 25 kV for the filterselected. Number 115 in the display means 11.5 mR/mAs. Ifthe filter button is pressed, the mR/mAs value for the otherfilter is displayed.

Press kV+


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#53PAr/b The density display shows bwhich means the Anode BrakeMode. Select 0 or 1 using the Den+ and Den- buttons.

0 = Anode Brake off1 = Anode Brake on

The factory default is to have the anode brake off after anexposure. This reduces the heat loading of the tube housingand applies less stress to the bearings.

Press kV+

#53PAr/t The density display shows t. In this mode the software forAlpha RT is selected.

0 = Not for Alpha RT1 = Not for Alpha RT2 = Only AA and manual mode (Alpha RT)3 = Only A and manual mode (Alpha RT)4 = AA ->> A ->> manual mode (factory defaultAlpha RT)5 = A ->> AA ->> manual mode (Alpha RT)

Press kV+

#53PAr/I Collimator type (Interlock)

1 for MGB-500 Collimator (with interlock)0 for MGB-400 Collimator (no interlock)

Press kV+

#53PAr/d C-arm control board selection

0 = C-arm control board (32310)

1 = CD-board (32010)Press Autoexpto leave the PArprogram.

Press kV+


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#64AEC/I The density display shows I. The Alpha RT AA-mode has so-called target times (= aimed exposure time) which can beadjusted in the tAr program. This parameter sets themaximum and minimum values for target times for largefocus (bucky installed) and small focus (mag stand installed)

separately.

1 Press autorel to toggle between min and max (factorydefault: min 0.5 sec., max 3.5 sec.). The kV display willshow HI and LO respectively. Use Den+/- buttons toalter the value.

2 Press kV+

#64AEC/c The density display shows c. This is for the AEC thicknesscompensation including five (5) subparameters: P, r1, r2, S1,

S2 (in kV display). For further information on thicknesscompensation refer to section AEC adjustment.

Press kV+

#64AEC/g The density display shows g. This is the software AEC gainparameter. It is used for adjusting the basic optical density(usually for Bucky molybdenum). refer to section AECadjustment.

CAUTION!

The gain affects all cassette holder/filter combinations.

Press kV+


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#64AEC/E The density display shows E. The mAs display showsthickness and kV display shows the initial kV for thisthickness. In this mode, the initial kV for different thicknessescan be programmed (only used by Alpha RT AA-mode). Thissetup has to be done both for the molybdenum and the

rhodium filter, and also separately for the bucky, cassettetunnel and magnification table.

To change kV table:

Use the initial kV table (see next page) to design new values.

1 Select molybdenum filter.

2 Install cassette holder (bucky, cassette tunnel or mag.table).

3 Drive the compression to 0 cm (Driving the paddle up

and down you cansee initial kV values for differentthicknesses).

4 Select the initial kV value for 0 cm with Density +/-buttons.

5 Drive the compression paddle up 0.5 cm and select theinitial kV value with Density +/- buttons.

6 Repeat point 5. until you have programmed the initialkV for 9.5 cm.

7 Install next cassette holder and repeat the kVprogramming.

8 Select rhodium filter and repeat the same kVprogramming for all cassette holders.

Pressing mAs- button resets the kV tables to factory defaultvalues.

Press kV+

Press Autoexp to leave the AEC program and to enter thespecial program menu.

NOTE!If the factory default setting is changed, use the table belowto store the new values.

CAUTION!

Always drive the compression paddle from 00cm up whenreprogramming the initial kV.


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INITIAL KV TABLE

Thickn.

display

Cass.

tunnel

new

values

Cass.

tunnel

default

valuesMo and

Rh

Bucky

new

values

Bucky

default

values

Mo andRh

Magn.

new

values

Magn.

Default

values

Mo andRh

0.0 23 23 25

0.5 23 23 25

1.0 23 23 25

1.5 23 23 25

2.0 23 23 25

2.5 23 23 25

3.0 23 23 25

3.5 24 24 25

4.0 24 24 26

4.5 24 24 26

5.0 25 25 26

5.5 25 25 27

6.0 26 26 27

6.5 26 26 28

7.0 27 27 28

7.5 27 27 28

8.0 28 28 29

8.5 28 28 29

9.0 28 28 30

9.5 28 28 30

Table 5.4 Initial kV table


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5.1.6 Service menu program #65 tAr

1 Select the program number 65 (tAr) with the kV+button.

2 Press Autoexpto enter the tAr program. The density display shows0. The kV displayshows the compression thicknessand the mAsdisplayshows the corresponding target time.

In this mode the target times for different thicknesses can be seen bydriving the compression paddle up and down.

3 Insert the bucky for large focus programming and magnificationstand for small focus programming. Also, both filters must beprogrammed.

The Alpha RT AA- mode utilizes automatic kV procedure which selects theused kV according to the breast thickness and a target time (= aimedexposure time). The target time depends on the compressed breastthickness and is linear curve calculated from two programmed points. Seea graph below.

#64AEC/U The density display shows U. In A- and AA-modes, theparameter U enables the separate optical densitycorrections for the following:

- for all kV steps within 20 - 35 kV

- for Molybdenum and Rhodium filter separately - for Bucky, Magnification and cassette holders

separately

The range for kV correction is 0.70 - 1.30, while the defaultvalue is 1.0.

#64AEC/S The density display shows S. The parameter S enables theadjustment of the extent of the Density-button steps,according to customer wishes or local regulations.

The density steps can be adjusted within a range of 5%-20%(denoted in the screen as 5-20). The default setting is 10(means that each time the density buttons of the ControlPanel are pressed, there will be a 10% increase or decreasein density value, depending on which density button waspressed).

In order to adjust the density steps:

1 enter program 64

2 select parameter S

3 select required step value4 exit the service program


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Fig 5.1. Target time factory defaults

To change target times:

1 Drive the compression to 0 cm. (Select the program number 65 /tArwith the kV+button. Pre

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