SONY BVF-55 Viewfinder Service Manual

ELECTRONIC VIEWFINDER

BVF-55

MAINTENANCE MANUAL4th EditionSerial No. 110001 and Higher

BVF-55

! WARNINGThis manual is intended for qualified service personnel only.To reduce the risk of electric shock, fire or injury, do not perform any servicing other than thatcontained in the operating instructions unless you are qualified to do so. Refer all servicing toqualified service personnel.

! WARNUNGDie Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um dieGefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind beiWartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegebenWartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigungdazu besitzen.

! AVERTISSEMENTCe manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afinde réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que lesréparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.Pour toute réparation faire appel à une personne compétente uniquement.

X-RAY RADIATION WARNINGBe sure that parts replacement in the high voltage blockand adjustments made to the high voltage circuits arecarried out precisely in accordance with the proceduresgiven in this manual.

1 (E)BVF-55

Table of Contents

Manual Structure

Purpose of this manual ........................................................... 3 (E)

Contents .................................................................................. 3 (E)

Relative manuals .................................................................... 4 (E)

1. Installation

1-1. Supplied Accessories ............................................... 1-1 (E)

1-2. Connector/Cable ...................................................... 1-1 (E)

1-2-1. Connector Input/Output Signals ..................... 1-1 (E)

1-2-2. Connector ....................................................... 1-2 (E)

2. Service Overview

2-1. Removal of Cabinet ................................................. 2-1 (E)

2-1-1. Removal of Hood Assembly and Tilt Table

Assembly ........................................................ 2-1 (E)

2-1-2. Removal of Cover Assembly and VR Box

Assembly ........................................................ 2-2 (E)

2-2. Replacement of Main Parts ...................................... 2-3 (E)

2-2-1. Replacement of Deflection Yoke ................... 2-3 (E)

2-2-2. Replacement of CRT ...................................... 2-3 (E)

2-3. Circuit Descriptions ................................................. 2-4 (E)

2-4. Precautions on Servicing ......................................... 2-6 (E)

2-4-1. Notes on Spare Parts ...................................... 2-6 (E)

2-4-2. Precautions on Maintenance ........................... 2-6 (E)

2-4-3. Trouble Shooting ............................................ 2-7 (E)

2-4-4. Unleaded Solder ............................................. 2-7 (E)

3. Electrical Alignment

3-1. Preparation ............................................................... 3-1 (E)

3-1-1. Equipment Required ....................................... 3-1 (E)

3-1-2. Example of Connection .................................. 3-1 (E)

3-1-3. Note on Adjustment ....................................... 3-2 (E)

3-1-4. Initial Setting .................................................. 3-2 (E)

3-2. Adjustment ............................................................... 3-2 (E)

3-2-1. Power Supply Adjustment .............................. 3-2 (E)

3-2-2. H. OSC. Frequency Adjustment ..................... 3-2 (E)

3-2-3. V. OSC. Frequency Adjustment ..................... 3-2 (E)

3-2-4. High Voltage Adjustment ............................... 3-3 (E)

3-2-5. Deflection Yoke Tilt Adjustment ................... 3-3 (E)

3-2-6. Centering Adjustment .................................... 3-4 (E)

3-2-7. H-PHASE Adjustment ................................... 3-4 (E)

3-2-8. Screen Size Adjustment ................................. 3-5 (E)

3-2-9. Linearity Adjustment ...................................... 3-6 (E)

3-2-10. V-Duty Adjustment ........................................ 3-6 (E)

3-2-11. Brightness Adjustment ................................... 3-7 (E)

3-2-12. Focus Adjustment ........................................... 3-7 (E)

4. Spare Parts

4-1. Notes on Repair Parts ..................................................... 4-1

4-2. Exploded View ............................................................... 4-2

4-3. Electrical Parts List ......................................................... 4-4

5. Semiconductor Pin Assignments

6. Block Diagram

Overall ............................................................................ 6-1

7. Schematic Diagrams

VF-81 .............................................................................. 7-2

CN-2742 ......................................................................... 7-3

LE-303 ............................................................................ 7-3

LE-304 ............................................................................ 7-3

LE-305 ............................................................................ 7-3

PS-703 ............................................................................. 7-3

VF-82 .............................................................................. 7-3

VF-85 .............................................................................. 7-3

VR-BOX ......................................................................... 7-3

Frame Wiring .................................................................. 7-4

2 (E) BVF-55

8. Board Layouts

CN-2742 .................................................................................... 8-1

LE-303 ....................................................................................... 8-1

LE-304 ....................................................................................... 8-1

LE-305 ....................................................................................... 8-1

PS-703 ....................................................................................... 8-1

VF-81 ........................................................................................ 8-2

VF-82 ........................................................................................ 8-2

VF-85 ........................................................................................ 8-2

3 (E)BVF-55

Manual Structure

Purpose of this manualThis manual is the maintenance manual for Electronic Viewfinder BVF-55.This manual describes the information items necessary when the unit is supplied andinstalled, items on maintenance, and items that premise the service based on thecomponents parts such as alignment, schematic diagram, board layouts and spareparts list, assuming use of system and service engineers.

ContentsThis followings are summaries of the each section for understanding the manual.

Section 1 InstallationDescribes information about connector input/output signals.

Section 2 Service OverviewDescribes information about removal of cabinet and replacement of main parts.

Section 3 Electrical AlignmentDescribes general information for electrical adjustments and the adjustmentsprocedure of this unit.

Section 4 Spare PartsDescribes parts list, exploded view, supplied accessories list used in the unit.

Section 5 Semiconductor Pin AssignmentsContains information on semiconductors used for the unit.It includes a complete list of the semiconductors and their ID Nos. for retrievinginformation on “Semiconductor Pin Assignments” CD-ROM, which is availableseparately.Please refer to this section together with the “Semiconductor Pin Assignments”CD-ROM.

Section 6 Block DiagramDescribes overall block diagram.

Section 7 Schematic DiagramsDescribes schematic diagrams for every circuit board and frame wiring.

Section 8 Board LayoutsDescribes board layouts for every circuit board.

4 (E) BVF-55

Relative manualsBesides this maintenance manual the following manual is available for this unit.

..... Operation Manual (Supplied with this unit)This manual is necessary for application and operation of this unit.

..... “Semiconductor Pin Assignments” CD-ROM (Available on request)This “Semiconductor Pin Assignments” CD-ROM allows you to search forsemiconductors used in B&P Company equipment.The maintenance manual contains a complete list of semiconductors and their IDNos., and thus should be used together with the CD-ROM.Part number: 9-968-546-XX

1-1 (E)BVF-55

(EXTERNAL VIEW)

101

2

34 5 6

7

89

11 12

Section 1Installation

1-1. Supplied Accessories

Description Sony P/N Q’ty

Hood ASSY A-7612-404-A 1

V Wedge Shoe ASSY A-7612-405-A 1

Number Plate 3-167-517-01 1

Connection Cord (VF20P-12P) 1-829-177-11 1

L Wrench 7-721-140-60 1

Fuse, Glass Tube 2A/250V 1-532-825-11 1

Screw +B4 x 8 7-682-561-09 4

Hexagon Socket Bolt 4 x12 7-683-421-04 4

Operation Manual 3-866-521-04 1

1-2. Connector/Cable

1-2-1. Connector Input/Output Signals

The main connector input/output signals are as follows.:

CAMERA (12P, MALE)

No. Signal Specification

1 (SPARE) No Connection

2 VF VIDEO IN (X) VS or VBS = 1.0 V p-p ±1 dB(100 %)

Zi = 75 Z ±5 %

3 VF VIDEO IN (G) GND for VF VIDEO

4 R TALLY IN ON : 7.0 ±0.2 V (ZR = 150 Z)(AUTO IND ON) OFF : 0 +0.3 V_0

Zi < 1 kZ

5 (BATT IND ON IN) No Connection

6 UNREG IN 10.5 to 17.0 V dc

7 16:9 ON ON : 0 VOFF : High Impedance (OPEN)

8 (+9.5V IN) No Connection

9 Peaking OFF ON : 0 VOFF : High Impedance (OPEN)

10 (GAIN U IND ON IN) No Connection

11 EIA/CCIR IN L : EIA, H : CCIR

12 G TALLY ON IN ON : 2.0 ±0.5 V (ZR = 300 Z)OFF : 0 +0.5 V

1-2 (E) BVF-55

1-2-2. Connector

Connections made with the connector panels during installation or service, should be made with theconnector/complete cable assemblies specified in the following list, or equivalent parts.

Connector function Parts No. and name of connector with cable

CAMERA 1-829-177-11 CORD, CONNECTION (VF20P-12P) (supplied with BVF-55)1-563-928-11 CONNECTOR, ROUND TYPE 12P FEMALEHIROSE HR10A-10PA-12SC equivalent

2-1 (E)BVF-55

Section 2Service Overview

2-1. Removal of Cabinet

2-1-1. Removal of Hood Assembly and Tilt Table Assembly

1. As shown in the figure below, loosen the screw and remove the hood assembly.2. Remove the two setscrews (M4 x 8) and remove the tilt lock lever and the tilt lock screw.3. Remove the friction knob and the six screws (K3 x 6), then remove the tilt table assembly.

K3 x 6

K3 x 6

Friction knob

Screw

Hood assembly

Tilt table assembly Tilt lock screw

Shaft (R)

Shaft (L)

Tilt lock lever

Cork spacer

Spacer (4)

Rubber spacer

SetscrewsM4 x 8

2-2 (E) BVF-55

B3 x 12

B3 x 14

B3 x 14

B3 x 12

B3 x 12

CN806

CN807

Cover assembly

VR box assembly

2-1-2. Removal of Cover Assembly and VRBox Assembly

1. As shown in the figure below, loosen the four screws(B3 x 14) and remove the cover assembly.

2. Loosen the three screws (B3 x 12) and remove the VRbox assembly.

3. Disconnect the two connectors CN806 and CN807.

2-3 (E)BVF-55

B3 x 6

CN109

VF-81 board

VF-82 board

PS-703 boardFixing screw

CRTsocket

CN303

Deflection yoke

2-2. Replacement of Main Parts

2-2-1. Replacement of Deflection Yoke

1. As for removal of cabinet. (Refer to Section 2-1.)2. Place so that the VR box of unit becomes upper

surface.3. Disconnect the connector CN109 on the VF-81 board,

and disconnect the connector CN303 on the VF-82board. (Cut the binding bands which has bound theharness.)

4. Place so that the VR box of unit becomes undersur-face.

5. Remove the three screws (B3 x 6) and remove the PS-703 board.

6. Disconnect the CRT socket.7. Loosen the deflection yoke fixing screw and remove

the deflection yoke.

8. Install the new deflection yoke in the reverse order ofremoval.m. Bind the harnesses of CN109 and CN303 as before

by a new binding band respectively.. After installing the deflection yoke, apply the

locking compound to the fixed nut of fixing screw.(Locking compound (Three bond-1401B):7-432-114-11)

2-2-2. Replacement of CRT

1. Remove the deflection yoke. (Refer to Section 2-2-1.)2. Remove the four screws (B3 x 8) and remove the

bezel assembly in the arrow direction.3. Remove the four screws (PWH3 x 8) and pull out the

CRT.4. Remove the earth band from the CRT.

5. Disconnect the anode cap by holding the anode pinwith tweezers.nDischarge the accumulated electricity on the anode toground using circuit tester lead of other leads beforeremoving the high voltage anode cap.

6. Install the new CRT in the reverse order of removal.

PWH3 x 8

PWH3 x 8

B3 x 8

CRT

Bezel assembly

Earth band

Pin

Anode cap

2-4 (E) BVF-55

2-3. Circuit Descriptions

Video Amplification Circuit (VF-81 Board)The VF-81 board is divided into the video amplificationcircuit, the bright control circuit, the vertical deflectiondrive circuit, and the serial interface circuit that handles thecontrols. The video signal input to pin 6 of CN403 firstpasses through the Q102 buffer, then its levels are adjustedby RV251 (CONTRAST) of the VR box. The input is thenseparated into the main video signal and peaking videosignal behind the Q103 buffer.The main signal passes through amplifiers Q106 and Q108.After the peaking signal passes through amplifiers Q107and Q109, its levels are adjusted by RV252 (PEAKING) ofthe VR box. The signal passes through buffer Q110, thenthe peaking signal and the main signal are combinedtogether again in IC102. This signal is clamped by theblanking pulse at IC102, and the black levels are stabilized.The signal is then amplified by Q111 and Q104, and passesthrough the clamp and blanking circuits of Q105 andQ135, it is supplied to the CRT first grid.

SYNC Separation/Horizontal Oscillation/VerticalOscillation Output Circuit (VF-81/VF-82 Board)After passing through the video buffer Q102, the signal isinput into pin 2 of IC204. There, the divided horizontalSYNC signal is output from pin 1 and input into pin 1 ofIC201, while the vertical SYNC signal is output from pin 3and input into pin 21 of IC201. IC201 provides anotherhorizontal oscillation output circuit, where the horizontaloscillation frequency is triggered by the horizontal SYNCsignal.The comparison pulse from the horizontal output signal isadded to pin 5 of IC201 and is phase-detected with thehorizontal SYNC signal. This output controls the horizon-tal oscillation reference voltage, and as a result, thehorizontal synchronization is performed. After the dutyratio are determined for the horizontal drive pulse outputfrom pin 12 of IC201, it is input into pin 4 of CN304 onthe VF-82 board. This output is amplified by the amplifiersQ305 and Q306, and is then added to the gate of Q301.The horizontal output signal of the horizontal outputcircuit, which consists of Q301, C304, and FBT, drives thehorizontal deflection coil. RV200 (H HOLD) adjusts thehorizontal oscillation frequency.The vertical oscillation output circuit on IC201 triggers thevertical oscillation frequency, and the sawtooth waveformof V period is generated.

Then the vertical output pulse from IC201 drives thevertical deflection coil.The following variable resistors are mounted around theIC201.RV206 (V SIZE) ................ for vertical frame size

adjustment NTSCRV209 (16 : 9 V SIZE) ..... for vertical frame size

adjustment NTSCRV210 (V SIZE) ................ for vertical frame size

adjustment CCIRRV211 (16 : 9 V SIZE) ..... for vertical frame size

adjustment CCIRRV204 (V HOLD) ............. for vertical oscillation

frequency adjustmentRV207 (V LIN) ................. for vertical linearity

adjustmentRV205 (V LIN2) ............... for vertical DUTY adjustment

High-Voltage Output Circuit and High-VoltageStabilized Circuit (VF-82/VF-85 Board)The horizontal drive pulse output from pin 13 of IC201 isused for the horizontal deflection coil drive and is also sentto the VF-82 board. It is amplified by the amplifiers Q305and Q306, and then added to the gate of Q301.The high-voltage drive pulse made from the Q301, C304,and FBT signals drive the flyback transformer on the VF-85 board. The flyback transformer on the VF-85 boardoutputs high voltage, medium voltage, low voltage, andheater voltage. The high voltage is supplied to the anodevoltage of the CRT, the medium voltage is supplied to thescreen and focus voltage, and the low voltage is supplied tothe video output and the BRIGHT circuit. Furthermore, thevariation of the high-voltage output voltage from theflyback transformer on the VF-85 board is detected andinput to pin 3 of IC302.The input detection voltage from pin 3 is compared to theset voltage on RV302, and the difference is output frompin 7.The output voltage from pin 7 is controlled through theQ302 gate to keep the high-voltage output voltage from theflyback transformer on the VF-85 board constant.

The following variable resistors are mounted around theIC302.RV302 (HV ADJ) .............. for high-voltage output voltage

adjustmentRV301 (H SIZE) ................ for horizontal frame size

adjustment

2-5 (E)BVF-55

Switching Power Supply Circuit (PS-703 Board)The +9.5 V DC constant voltage is generated by supplyingan input voltage of 10.5 V to 17 V DC to the chopperregulator circuit.The IC501 controls the oscillation pulse width by feed-backing the chopper output voltage at Q503 to pin 2 viaRV501 and comparing it with the reference input voltageat pin 1.This difference output controls the Q503 gate after goingthrough Q501 and Q502.The Q503 output voltage is then smoothed by the follow-ing devices to output a DC voltage of +9.5 V DC.D502, L502, C507, and L503, C508, L504, C510, C509RV501 (+9.5 V ADJ) ....... for output voltage adjustment

Blanking Circuit (VF-81 Board)The blanking pulse is generated by adding the horizontalpulse and vertical pulse for IC208 and IC202.The generated blanking pulse is input into the base ofQ105 and Q135, as well as IC208 (black levels stabilizedby the clamping), and blanking is carried out.

Tally and Control Circuit (VF-81/CN-2742 Board)Q801 on the CN-2742 board is a supply voltage variablecircuit for the tally lamp on the LE-303 board. The DIM-MER control (RV254) controls the output voltage level.The luminance of the tally lamp varies according to thefluctuation in the output level from EXT DC.IC405 and Q403 turn on and off the tally lamp on the LE-303 board. Setting the TALLY switch from the R TALLYIN terminal (pin 4) of the SW202 and CN801 connectorsto ON will switch Q403 to on or off depending on the stateof IC405. Current will run through the tally lamp of LE-303 board and turn the tally lamp on and off.

The R TALLY IND signal (pin 4) of the CN801 connectoris added to the base of Q405 and Q407 via pin 3 on CN807and CN403.When the R TALLY COUNT signal is high, Q405 andQ407 are turned on, and the R TALLY LEDs (D605,D602/LE-304, -305 board) are lit.

The G TALLY CONT signal from the G TALLY INterminal (pin 12) of the CN801 connector is added to thebase of Q404 and Q408 via pin 9 on CN807 and CN403.When the G TALLY COUNT signal is high, Q404 andQ408 are turned on, and the G TALLY LEDs (D606,D603/LE-304, -305 board) are lit.

The 16 : 9 CONT signal from the 16 : 9 terminal (pin 7) ofthe CN801 connector is added to the base of Q208 (NTSC)and Q210 (CCIR) via pin 8 on CN807 and CN403.When the 16 : 9 signal is high, Q208 (NTSC) and Q210(CCIR) are turned on, and the screen size changes to 16:9.

The NTSC/CCIR signal (pin 11) of the CN801 connectoris added to the base of Q209 (SIZE) and Q211 (PHASE)via pin 10 on CN807 and CN403.When the NTSC/CCIR control signal is high, the unit willoperate in CCIR mode. When the signal is low, it willoperate in NTSC mode.

2-6 (E) BVF-55

2-4-2. Precautions on Maintenance

1. Handle the CRT body and the controls on the neck ofthe CRT with utmost care and do not apply excessiveforce to the CRT.

2. High voltage and high voltage pulse exist on the highvoltage and deflection circuits. Take utmost care whenchecking the unit while it is operating; especially highvoltage circuit and deflection circuit. High voltagelines are installed on the printed board. Do not touchthe printed board with bare hand or tools.

3. Before touching the CRT for checking purpose orreplacing it, cut off the power, remove the high voltageanode cap and discharge the accumulated electricity onthe anode to the ground using circuit tester lead, etc.Disconnect the power cord from the AC power sourceto prevent possible danger caused by accidentalturning on the power.

4. Dust or dirt accumulated on the unit may causeunforeseen trouble. Periodically check and cleanwiring subjected to high voltage, and CRT face. Cleanespecially around anode cap and the high voltagerectifier.

2-4. Precautions on Servicing

2-4-1. Notes on Spare Parts

1. Safety Related Components WarningComponents marked ! are critical to safe operation.Therefore, specified parts should be used in the case ofreplacement.

2. Standardization of PartsSome repair parts supplied by Sony differ from thoseused for the unit. These are because of parts common-ality and improvement.Parts list has the present standardized repair parts.

3. Stock of PartsParts marked with “o” at SP (Supply Code) column ofthe spare parts list may not be stocked. Therefore, thedelivery date will be delayed.

4. HarnessHarnesses with no part number are not registered asspare parts.

2-7 (E)BVF-55

2-4-3. Trouble Shooting

1. First, check cables, connectors and contacts forloosening and disconnection, and signal input andpower supply conditions before servicing the view-finder.

2. Next, check the position of the controls.If controls are not set at appropriate position, nopicture may appear; for example, if CONTRASTcontrol and BRIGHTNESS control are set at fullycounterclockwise position, no picture is produced.

3. Be sure to check if each board is connected by theconnectors properly.

4. First, check the power supply voltage. If the regulatorcircuit (PS-703 board) is in malfunction, other circuitsdo no work properly. Also, when the power supply oneach board is short or open.

5. Trouble may concern either a signal or plural circuits.

2-4-4. Unleaded Solder

Boards requiring use of unleaded solder are printed with alead free mark (LF) indicating the solder contains no lead.(Caution: Some printed circuit boards may not comeprinted with the lead free mark due to their particular size.)

: LEAD FREE MARK

m. Be sure to use the unleaded solder for the printed circuit

board printed with the lead free mark.. The unleaded solder melts at a temperature about 40 dC

higher than the ordinary solder, therefore, it is recom-mended to use the soldering iron having a temperatureregulator.

. The ordinary soldering iron can be used but the iron tiphas to be applied to the solder joint for a slightly longertime. The printed pattern (copper foil) may peel away ifthe heated tip is applied for too long, so be careful.

3-1 (E)BVF-55

Section 3Electrical Alignment

3-1. Preparation

3-1-1. Equipment Required

Fixtures

. Pattern box PTB-500 J-6029-140-B(PTB-100/220 is also available)

. Resolution chart (4:3) J-6026-100-A

. Registration chart J-6026-120-A

Measuring Equipment

. Digital voltmeter: Advantest R6441C (with DC High Voltage Probe TR1116)or equivalent

. Oscilloscope (300 MHz or more): Tektronix 2465 or equivalent

. Waveform/Vector monitor: Tektronix 1750 or equivalentTektronix 1751 or equivalent

. Frequency counter: Advantest TR5821AK or equivalent

. B/W monitor

Peripheral Equipment

. Color video camera: BVP-570/550/550P

. CCD unit: OHB-450/450P/550/550POHB-455WS/455WSP/550WS/550WSP

. Camera adaptor: CA-570/570P/550/550P/530

. AC adaptor: AC-550/550CE

3-1-2. Example of Connection

CAMERA ADAPTORCA-570/570PCA-550/550PCA-530

AC ADAPTORAC-550/550CE

ENG/EFP LENSCOLOR VIDEO CAMERABVP-570/550/550P

OHB-455WS/455WSPOHB-550WS/550WSP

CCD UNITOHB-450/450POHB-550/550P

4 : 3

16 : 9

ELECTRONICVIEWFINDERBVF-55

PIX

75 Z

A-ch

75 Z

TEST OUTWaveform/Vector monitor

B/W monitor

3-2 (E) BVF-55

PS-703 board (Soldering side) VF-81 board (Soldering side)

3-2. Adjustment

Preparation

. BRIGHTNESS knob/Viewfinder → mechanical center

. CONTRAST knob/Viewfinder → mechanical center

. PEAKING switch /Viewfinder → OFF

3-2-1. Power Supply Adjustment

Note

This adjustment influences operation of BVF-55.Therefore, when this adjustment is carried out, all offollowing adjustments must be performed.Perform the adjustment when measured voltage is shiftedmore than ±1 % with respect to the specified voltage.

Equipment: Digital voltmeterTest point: TP502/PS-703Adjusting point: 1RV501/PS-703Specification: +9.5 ±0.1 V dc

3-2-2. H. OSC. Frequency Adjustment

Equipment: Frequency counterTest point: TP111 (GND: chassis)/VF-81Adjusting point: 1RV200/VF-81Specification: 15.685 ±0.05 kHz

15.625 ±0.100 kHz (CCIR)

3-2-3. V. OSC. Frequency Adjustment

Equipment: Frequency counterTest point: TP112 (GND: chassis)/VF-81Adjusting point: 1RV204/VF-81Specification: 46 ±0.5 Hz

42 ±2 Hz (CCIR)

3-1-3. Note on Adjustment

. Connect the BVF-55 to the video camera.Then remove the cabinet by loosening the screws so thatthe each board can be adjusted from external.

. When carrying out the following adjustments, thesupplied hood must be removed.Loosen the hood lock knob, and remove the hood.3-2-8. Screen Size Adjustment

. Before adjustment, set the CAMERA/VTR switch on thecamera to ON/STBY and warm up for about 10 minutes.

3-1-4. Initial Setting

Set the camera switches and controls as follows.

CAMERA/VTR: ON/STBYGAIN switch: 0 dBOUTPUT/DCC switch: CAM/OFFWHITE BAL switch: PRESETFILTER knob: 1 (OHB-450/450P)

1B (OHB-550/550P/455WS/455WSP/550WS/550WSP)

IRIS AUTO/MANU switch: MANULENS IRIS: Close “C”SHUTTER switch: OFF

RV501TP502

RV208

RV200

RV102

RV205

RV204

RV207

RV206

RV209

RV211

RV210

RV111

TP111

TP112

3-3 (E)BVF-55

3-2-5. Deflection Yoke Tilt Adjustment

Note

Perform this adjustment only when the CRT is replaced.

Preparation

Remove a lens cap, and shoot with lens iris is opened state.Test point: Viewfinder screen

Adjustment Procedure

1. When the picture frame tilts against the image ofviewfinder, loosen the deflection yoke fixing screwand adjust a tilt while turning the deflection yoke.

2. Tighten the fixing screw carefully.nBe sure not to overtighten the fixing screw.

3. Lock the deflection yoke fixing screw with paint.

3-2-4. High Voltage Adjustment

Equipment: High voltage meterTest point: CRT anode (GND: chassis)Adjusting point: 1RV302/VF-82Specification: +8.50 ±0.05 kV dc

VF-82 board (Soldering side)

RV301 RV302

L302

Chart frame Viewfinder picture frame

(No good) (Good)

Deflection yoke

Deflection yoke fixing screw

3-4 (E) BVF-55

Centering magnets

3-2-6. Centering Adjustment

This adjustment and Section 3-2-7. H-PHASE Adjustmentaffect each other, so carry out these adjustments alternatelyseveral times until the specification for each adjustment issatisfied.

Object: Registration chartEquipment: Waveform monitorTest point: Viewfinder screen


1. Adjust the zoom control so that the registration chartframe touches the underscanned picture frame on themonitor.

Monitor screen (underscanned)

2. Adjust the iris control so that the white level at VBSOUT connector on the camera is 100 ±5 IRE (CCIR:700 ±30 mV).

3. Adjust two centering magnets attached to the deflec-tion yoke so that the center of registration chart iscentered on the viewfinder screen.

4. Lock the centering magnets with paint.

3-2-7. H-PHASE Adjustment

Note

This adjustment and Section 3-2-6. Centering Adjustmentaffect each other, so carry out these adjustments alternatelyseveral times until the specification for each adjustment issatisfied.

Object: Registration chartEquipment: Waveform monitorTest point: Viewfinder screenAdjusting point: 1RV208/VF-81





3. Adjust 1RV208 so that the center of registration chartis centered on the viewfinder screen.


RV208

RV200

RV102

RV205

RV204

RV207

RV206

RV209

RV211

RV210

RV111

TP111

TP112

3-5 (E)BVF-55

3-2-8. Screen Size Adjustment

Note

. Perform this adjustment for NTSC first, and then forCCIR.

. This adjustment and Section 3-2-9. Linearity Adjustmentaffect each other, so carry out these adjustments alter-nately several times until the specification for eachadjustment is satisfied.

. When a retrace line appears at the top of the screen,perform Section 3-2-10. V-Duty Adjustment (RV205) toadjust the screen to the position where the retrace linedisappears.

Object: Registration chartEquipment: Waveform monitorTest point: Viewfinder screenAdjusting point: 1RV301/VF-82 H-SIZE

1RV206/VF-81 V-SIZE NTSC 4 : 31RV209/VF-81 V-SIZE NTSC 16 : 91RV210/VF-81 V-SIZE CCIR 4 : 31RV211/VF-81 V-SIZE CCIR 16 : 9





3. Adjust 1RV301, 1RV206, 1RV209, 1RV210 and1RV211 so that the horizontal size and the verticalsize of viewfinder screen meet the following specifica-tions.

Chart frame Underscanned pictureframe on the monitor

4 : 3;H = 97 ±2 mm (1RV301)V = 73 ±1.5 mm (1RV206): NTSCV = 73 ±1.5 mm (1RV210): CCIR

16 : 9;H = 97 ±2 mm (1RV301)V = 54.6 ±1 mm (1RV209): NTSCV = 54.6 ±1 mm (1RV211): CCIR

H

V

RV208

RV200

RV102

RV205

RV204

RV207

RV206

RV209

RV211

RV210

RV111

TP111

TP112


RV301 RV302

L302


3-6 (E) BVF-55

3-2-9. Linearity Adjustment

Note

This adjustment and step 3-2-8. Screen Size Adjustmentaffect each other, so carry out these adjustments alternatelyseveral times until the specification for each adjustment issatisfied.

Object: Registration chartEquipment: Waveform monitorTest point: Viewfinder screenAdjusting point: 1L302 (H LIN)/VF-82

1RV207 (V LIN)/VF-81




3. Adjust 1L302 and 1RV207 alternately so that bothhorizontal and vertical lattices are at equal interval.


A

B

DA = B = C = DC

RV208

RV200

RV102

RV205

RV204

RV207

RV206

RV209

RV211

RV210

RV111

TP111

TP112

3-2-10. V-Duty Adjustment

Note

. When the temperature is high or low, adjustment isneeded when a retrace line appears at the top of thescreen for NTSC or aliasing occurs at the bottom of thescreen for PAL.

. This adjustment and Section 3-2-8. Screen Size (V-Size)Adjustment affect each other, so be sure to check the V-size specification after this adjustment.

Equipment: OscilloscopeTest point: CN109-pin 1 and TP112 (GND:chassis)/

VF-81Adjusting point: 1RV205/VF-81Specification: 55 +5 us NTSC Standard


1. Connect pin 1 of CN109 to CH1, and set VOLT/DIVto 5 V.

2. Connect TP112 to CH2, and set VOLT/DIV to 2 V.3. Set TIME/DIV to 100 us.4. Adjust 1RV205 so that the specification is satisfied.

CH-1CN109-1PIN

CH-1TP112 A

B

SpecificationA: 55 +5 us : NTSCB: 190 us or less : PAL

RV301 RV302

L302

Adjust L302 from the side.


3-7 (E)BVF-55

3-2-11. Brightness Adjustment

Test point: Viewfinder screen

Preparation

. CONTRAST knob/Viewfinder→ Fully counterclockwize 3

. BRIGHTNESS knob/Viewfinder → “ ”(Mark at 9 o’clock)

Adjusting point: 1RV102/VF-81


. Adjust 1RV102 so that the raster is just cut off.

3-2-12. Focus Adjustment

Object: Resolution chartEquipment: Waveform monitor

Preparation

. CONTRAST knob/Viewfinder → Fully clockwize 2Test point: Viewfinder screenAdjusting point: 1RV111 (FOCUS)/VF-81


1. Adjust the zoom control so that the resolution chartframe touches the underscanned picture frame on themonitor.



3. Adjust 1RV111 so that the picture on the viewfinderis best focused.

100 ±5 IRE(CCIR: 700 ±30 mV)


RV208

RV200

RV102

RV205

RV204

RV207

RV206

RV209

RV211

RV210

RV111

TP111

TP112

4-1BVF-55

4-1. Notes on Repair Parts

1. Safety Related Components WarningwComponents marked ! are critical to safe operation.Therefore, specified parts should be used in the case ofreplacement.

2. Standardization of PartsSome repair parts supplied by Sony differ from thoseused for the unit. These are because of parts common-ality and improvement.Parts list has the present standardized repair parts.

3. Stock of PartsParts marked with “o” at SP (Supply Code) column ofthe spare parts list may not be stocked. Therefore, thedelivery date will be delayed.

4. HarnessHarnesses with no part number are not registered asspare parts.

Section 4Spare Parts

4-1.

4-2 BVF-55

Overall Block

4-2. Exploded View

37

LW3

BO

LT,

HE

XA

GO

NS

OC

KE

T5 x

8

B3 x

10

W4

SU

PP

LIE

D A

CC

ES

SO

RY

4723

13

38

31

28

A

3455

51

6

29

40 52 40

2

57

4

30

26

4839

43

25

1 54

12 15

32

22

32

8

32

33

44

10

14

75

42

42

18

21

19

5327

20

9

3

32

46

41

24

56

17

16

4945

50

46

50

49

49

21

9

B3 x

4

K3 x

6

B3 x

12

B3 x

6

B3 x

6

B3 x

6

B3 x

6 B3 x

6B3 x

6B

3 x

6

B3 x

6

B3 x

6

B3 x

6 B3 x

6B

3 x

6

B3 x

6

B3 x

8

B3 x

8

B3 x

6P

WH

3 x

8

PW

H3 x

8

BV

TP

2.6 x

5

SE

T-S

CR

EW

, HE

X2 x

2.5

(F

LAT

) S

T

SE

T-S

CR

EW

, HE

X2 x

2.5

(F

LAT

) S

T

SE

T-S

CR

EW

, HE

X2 x

2.5

(F

LAT

) S

T

B3 x

5

W2.

6

W2.

6

W2.

6

W2.

6

P4 x

12

B3 x

25

B4 x

8

N4

N3

LW3

BV

TP

2.6 x

5

B3 x

4

B3 x

14

B3 x

14

K3 x

6

PR

EC

ISIO

NP

2.6 x

4

SU

PP

LIE

D A

CC

ES

SO

RY

11

35

A

36P

RE

CIS

ION

P2 x

3P

RE

CIS

ION

P2 x

3

4-3BVF-55

Overall Block

No.

P

art

No.

S

P De

scri

ptio

n

1 A-1114-127-

A s MO

UNTE

D CI

RCUI

T BO

ARD,

PS-

703

2

A

-1114-129-A

s MO

UNTE

D CI

RCUI

T BO

ARD,

VF-

82 3

A-1114-132-

A s

MOUN

TED

CIRC

UIT

BOAR

D, L

E-303

4

A

-1114-135-

A s

MOUN

TED

CIRC

UIT

BOAR

D, V

F-81

5 A-1114-136-

A s MO

UNTE

D CI

RCUI

T BO

ARD,

CN-

2742

6

A

-1114-137-A

s MO

UNTE

D CI

RCUI

T BO

ARD,

VF-

85 7 A-1114-138-A s MO

UNTE

D CI

RCUI

T BO

ARD,

LE-

304

8 A-1114-139-

A s MO

UNTE

D CI

RCUI

T BO

ARD,

LE-

305

9

A

-7612-403-A

o TA

BLE

ASSY

, TI

LT10

A-7612-404-

A o

HOOD

ASS

Y

11 A-7612-405-

B s SH

OE ASS

Y, V EDG

E12

X

-3168-356-2

s CO

VER

ASSY

,TAL

LY L

AMP

13 X-3165-595-

1 o

KNOB

ASS

Y, F

RICT

ION

14 X-3605-459-2 s BE

ZEL AS

SY15

X-3605-461-

2 s CO

VER AS

SY

16

X

-3608-216-

2 s

VR B

OX A

SSY

17

1

-223-165-3

1 s

RESI

STOR

, AD

J. 1

0K18

1-238-506-1

1 s RE

SIST

OR,V

AR,C

ARBO

N 5K

19 1-241-624-1

1 s RE

SIST

OR, VA

R, CAR

BON 50

K20

!

1-451-585-11

s DE

FLEC

TION

YOR

K, W

/B(5

INC

H)

21 1-554-924-1

1 s SW

ITCH

,TOG

GLE(

SHOR

T TO

GGLE

)22

!

1-546-088-11

s CA

THOD

E-RA

Y TU

BE,

B/W(

5 IN

CH)

23 3-146-316-21 s RING, RUBBER (RBR)

24 3-167-480-11 o RU

BBER

, BA

ND, CR

T25 3-167-481-02 o TI

LT LOC

K LE

VER

26 3-167-482-0

1 o SC

REW,

LOC

K, TIL

T27

3-167-484-0

1 s

SPAC

ER (

1),

CORK

28 3-167-485-03 s SP

ACER

(2)

29

3

-167-486-02

o SP

ACER

(4)

(POM

)30 3-167-486-1

2 o SP

ACER

(4)

31 3-167-487-01 o SP

RING

, PL

ATE

32 3-167-490-01 s TUBE, SILICON (RBR)

33

3

-167-493-01

s MA

SK,

CRT

34

3

-167-504-0

3 o

BASE

, PA

N35 3-167-513-0

1 o

KNOB

, RE

LEAS

E LE

VER

36 3-167-514-0

1 o KN

OB, ST

OPPE

R37 3-168-706-02 s LID

38 3-169-580-02 s WASHER,THRUST (ST)

39

3

-171-209-01

o SP

ACER

, RU

BBER

40 4-027-640-0

3 o SP

ACER

,PAN

41 3-664-519-01 o NUT (M4) (COPPER)

42 3-673-018-11 s SCREW, BLIND (PLA)

43 3-678-684-0

1 o HO

LDER

,CAB

LE44

3-680-616-1

5 s

SCRE

W (M

4),

BIND

ING

45 3-681-884-02 o LABEL, WS (PETP)

No.

P

art

No.

S

P De

scri

ptio

n

46 3-685-104-01 s NUT(M6),CONTROL (STEEL)

47 4-301-647-37 s WASHER(3.5X12) (STEE

L)48 3-701-512-01 s SET-SCREW,HEX M4X8 (WP) ST

49 3-720-962-01 s NUT, VOLUME (STEEL)

50

3

-722-486-11

s KNOB

51 3-742-015-02 o WEDGE (B), MOUNTING (AD

C)52 4-027-627-01 o SPRING (DIA 18)(PLATE) (STEE

L)53 1-238-505-11 s RESISTOR, VAR, CARBON 2K

54 3-709-233-01 s POWER BRACKET

55 3-167-506-02 o SPACER PAN

56

4

-855

-006

-12

s SP

ACER

57

6

-551-373-01

s TRANSISTOR 2

SK2012

Scre

ws/W

ashe

rs

7-621-731-08 s SET-SCREW,HEX 2X2.5(FLAT) ST

7-623-422-07 s WASHER LW 3 (TYPE 3)

7-623-923-11 s WASHER PLASTIC (2.6X0.3)

7-627-553-38 s SCREW,PRECISION +P 2X3

7

-627-556-38

s SCREW,PRECISION

+P2.6X4

7-682-163-01 s SCREW +P4X12

7-682-247-04 s SCREW +K 3X6

7

-682

-545

-09

s SC

REW

+B3X

4

7-6

82-5

46-0

4 s

SCRE

W +B

3X5

7-682-547-04 s SCREW +B 3X6

7-682-548-09 s SCREW +B 3X8

7-682-549-04 s SCREW +B3X10

7-682-550-09 s SCREW +B3X12

7-682-551-09 s SCREW +B3X14

7

-682

-561

-09

s SC

REW

+B4X

8

7-683-434-04

s BOLT,HEXAGON S

OCKET

5X8

7-684-024-04 s NUT M4 TYPE2

7-685-532-19 s SCREW +PTP2.6X5

7-688-004-02 s WASHER (4)

7-684-023-04 s N3, TYPE 1

7

-623-422-07

s LW3, T

YPE

B 7-682-554-04 s SCREW +B3X25

7-682-903-21 s SCREW +PWH3X8

4-4 BVF-55

4-3. Electrical Parts List-----------VF-81 BOARD----------- Ref. No. or Q’ty Part No. SP Description

1pc A-1114-135-A s MOUNTED CIRCUIT BOARD, VF-81

D101 8-719-059-52 s DIODE MA3J14300LSO D103 8-719-059-52 s DIODE MA3J14300LSO D104 8-719-052-18 s DIODE RLS245TE-11 D105 8-719-052-18 s DIODE RLS245TE-11 D106 8-719-070-38 s DIODE ESJA57-04AT

D112 8-719-052-18 s DIODE RLS245TE-11 D201 8-719-059-52 s DIODE MA3J14300LSO D204 8-719-059-51 s DIODE MA3J142E0LSO D205 8-719-158-39 s DIODE RD10SB

DL101 1-406-729-21 s DELAY LINE, LC (120NS)

F101 ! 1-532-825-11 s USE,GLASS 2A/250V (20MM)

IC102 8-759-366-35 s IC TC4W66F (TE12R) IC202 8-759-523-04 s IC TC74HC4538AFT IC203 8-759-708-05 s IC NJM78L05A IC204 8-759-987-27 s IC LM1881M IC207 8-759-242-76 s IC TC7W08F

IC208 8-759-523-04 s IC TC74HC4538AFT IC209 8-759-209-90 s IC TC4S71F IC210 8-759-209-90 s IC TC4S71F IC212 8-759-242-74 s IC TC7W04F IC214 8-759-561-46 s IC AD8014ART-REEL7

IC405 8-759-242-76 s IC TC7W08F IC407 8-759-242-74 s IC TC7W04F

Q101 8-729-905-35 s TRANSISTOR 2SC4081-R Q102 8-729-905-35 s TRANSISTOR 2SC4081-R Q103 8-729-905-35 s TRANSISTOR 2SC4081-R Q106 8-729-117-73 s TRANSISTOR 2SC4178-F14 Q107 8-729-117-73 s TRANSISTOR 2SC4178-F14

Q108 8-729-905-35 s TRANSISTOR 2SC4081-R Q109 8-729-905-35 s TRANSISTOR 2SC4081-R Q110 8-729-905-35 s TRANSISTOR 2SC4081-R Q113 8-729-924-99 s TRANSISTOR 2SC3722K-E Q201 8-729-905-35 s TRANSISTOR 2SC4081-R

Q204 8-729-420-74 s TRANSISTOR 2SD1328-RST Q206 8-729-905-35 s TRANSISTOR 2SC4081-R Q208 8-729-422-12 s FET 2SK664 Q209 8-729-422-12 s FET 2SK664 Q210 8-729-422-12 s FET 2SK664

Q211 8-729-422-12 s FET 2SK664 Q402 8-729-905-35 s TRANSISTOR 2SC4081-R Q403 8-729-105-19 s TRANSISTOR 2SC3518L Q404 8-729-905-35 s TRANSISTOR 2SC4081-R Q405 8-729-905-35 s TRANSISTOR 2SC4081-R

Q407 8-729-905-35 s TRANSISTOR 2SC4081-R Q408 8-729-905-35 s TRANSISTOR 2SC4081-R

RV102 1-237-039-11 s RESISTOR,ADJ,CERMET 100K RV200 1-237-035-11 s RESISTOR,ADJ,CERMET 5K RV204 1-237-039-11 s RESISTOR,ADJ,CERMET 100K RV205 1-237-035-11 s RESISTOR,ADJ,CERMET 5K RV206 1-237-032-11 s RESISTOR,ADJ,CERMET 500

RV207 1-237-032-11 s RESISTOR,ADJ,CERMET 500 RV208 1-237-035-11 s RESISTOR,ADJ,CERMET 5K RV209 1-237-032-11 s RESISTOR,ADJ,CERMET 500 RV210 1-237-032-11 s RESISTOR,ADJ,CERMET 500 RV211 1-237-032-11 s RESISTOR,ADJ,CERMET 500

SG101 1-519-422-11 s GAP,SPARK SG102 1-519-422-11 s GAP,SPARK

-----------VF-82 BOARD----------- Ref. No. or Q’ty Part No. SP Description


C311 ! 1-162-965-11 s CAPACITOR,CERAMIC 1500PF/50V B C312 ! 1-100-597-91 s CAPACITOR,CHIP 0.1MF B 1608

D301 8-719-059-52 s DIODE MA3J14300LSO D302 8-719-059-52 s DIODE MA3J14300LSO D303 8-719-074-79 s DIODE YG911S2R D304 8-719-948-45 s DIODE ERA22-08 D305 8-719-036-65 s DIODE RD2.0SB-T1

D306 8-719-059-52 s DIODE MA3J14300LSO

IC301 8-759-095-59 s IC M5237ML-TP1 IC302 8-759-824-98 s IC BA15218F-E2

Q301 6-551-373-01 s TRANSISTOR 2SK2012 Q305 8-729-905-35 s TRANSISTOR 2SC4081-R Q306 8-729-026-52 s TRANSISTOR 2SA1576A-T106-R

R311 ! 1-218-866-11 s RESISTOR,CHIP 6.2K 1/10W(1608) R312 ! 1-218-875-11 s RESISTOR,CHIP 15K 1/10W (1608)

RV301 1-237-034-11 s RESISTOR,ADJ,CERMET 2K RV302 ! 1-237-035-11 s RESISTOR,ADJ,CERMET 5K

------------PS-703 BOARD------------ Ref. No. or Q’ty Part No. SP Description

1pc A-1114-127-A s MOUNTED CIRCUIT BOARD, PS-703

D501 8-719-945-59 s DIODE DSA3A4 D502 8-719-981-00 s DIODE ERC81-004

IC501 8-759-144-88 s IC UPC494GS

Q501 8-729-905-35 s TRANSISTOR 2SC4081-R Q502 8-729-026-52 s TRANSISTOR 2SA1576A-T106-R

RV501 1-237-032-11 s RESISTOR,ADJ,CERMET 500

-----------VF-85 BOARD----------- Ref. No. or Q’ty Part No. SP Description


4-5BVF-55

-------------CN-2742 BOARD------------- Ref. No. or Q’ty Part No. SP Description

1pc A-1114-136-A s MOUNTED CIRCUIT BOARD, CN-2742

D801 8-719-059-52 s DIODE MA3J14300LSO

IC809 8-759-140-85 s IC UPC1093J

Q801 8-729-105-19 s TRANSISTOR 2SC3518L

------------LE-303 BOARD------------ Ref. No. or Q’ty Part No. SP Description

1pc A-1114-132-A s MOUNTED CIRCUIT BOARD, LE-303

D606 6-500-914-01 s DIODE UR5365S D607 6-500-914-01 s DIODE UR5365S D608 6-500-914-01 s DIODE UR5365S D609 6-500-914-01 s DIODE UR5365S D610 6-500-914-01 s DIODE UR5365S

D611 6-500-914-01 s DIODE UR5365S D612 6-500-914-01 s DIODE UR5365S D613 6-500-914-01 s DIODE UR5365S



D605 6-501-093-01 s DIODE MU11-2201 D606 6-501-094-01 s DIODE MU11-5201



D602 6-501-093-01 s DIODE MU11-2201 D603 6-501-094-01 s DIODE MU11-5201

----------------------------------------PACKING MATERIALS & SUPPLIED ACCESSORIES---------------------------------------- Ref. No. or Q’ty Part No. SP Description

1pc A-7612-404-A o HOOD ASSY 1pc A-7612-405-A s SHOE ASSY, V EDGE 1pc ! 1-532-825-11 s FUSE,GLASS 2A/250V (20MM) 1pc 1-829-177-11 s CORD, CONNECTION (VF20P-12P) 1pc 3-167-517-01 s PLATE, NUMBER (PC)

1pc 3-866-521-04 s MANUAL, OPERATION 4pcs 7-682-561-09 s SCREW +B4X8 4pcs 7-683-421-04 o BOLT,HEXAGON-SOCKET 4X12 1pc 7-721-140-60 s L-SHAPED HEX. WRENCH (3.0MM)

5-1BVF-55

Section 5Semiconductor Pin Assignments

The following describes the semiconductor types used inthis unit.For semiconductors marked with page numbers in theindex, refer to the corresponding pages in this section.However, in some cases incompatible types are also listed,therefore, when a part is to be replaced, also refer to theSpare Parts section.In addition, for semiconductors with ID Nos., refer to theseparate CD-ROM titled “Semiconductor Pin Assignments”(Sony Part No. 9-968-546-xx) that allows searching forparts by semiconductor type or ID No.The semiconductors in the manual or on the CD-ROM arelisted by equivalent types. Thus the external view or theindex mark indication may differ from the actual type.Pin assignments and block diagrams are based on the ICmanufacturer’s data book.

Index

DIODE Page or ID No.

1SS119-25TD .................................................................. DA001-01

DSA3A4 ........................................................................... DA004-01

ERC81-004 ...................................................................... DA001-01

HZ12B2L .......................................................................... DA001-02HZ12C2L .......................................................................... DA001-02

MA3J142E0LSO .............................................................. DC001-03MA3J14300LSO ............................................................... DC001-01

RD10SB ........................................................................... DC008-04RD2.0SB-T1 ..................................................................... DC008-04RLS245TE-11 .................................................................. DC006-01

LED Page or ID No.

UR5365S ......................................................................... LR001-01

TRANSISTOR Page or ID No.

2SA1162-G ...................................................................... TC001-012SA1576A-T106-R ........................................................... TC001-012SC3518L ........................................................................ TR031-012SC4081-R ...................................................................... TC001-022SC4081T106R ............................................................... TC001-022SC4178-F14 ................................................................... TC001-022SC4178-T1F14 .............................................................. TC001-022SD1328-RST .................................................................. TC001-022SD1328-RST-TX ............................................................ TC001-022SK664 ............................................................................ TC001-08

IC Page or ID No.

AD8014ART-REEL7 ....................................... AD8055ART-REEL7

LM1881M .......................................................................... LM1881N

M5237ML-TP1 ................................................................. M5236ML

NJM78L05A .............................................................. UA78L05AWC

TA78L005AP ............................................................. UA78L05AWCTC4S71F ........................................................................... TC7S32FTC74HC4538AFT(EL) ............................................ MC74HC4538NTC74HC4538AFT ................................................... MC74HC4538NTC7W04F ......................................................................... TC7W04FTC7W08F(TE12R) ........................................................... TC7W08FTC7W08F ......................................................................... TC7W08F

UPC1093J ....................................................................... TL431CLPUPC494GS ....................................................................... TL494CN

6-1BVF-55 6-1

Section 6Block Diagram

Overall

OverallOverall

7-1BVF-55 7-1

2

3

4

5

1

A B C D E F G H

Section 7Schematic Diagrams

VF-85

VF-82

VF-81

CN-2742

LE-303

LE-305

LE-304

PS-703

7-2 BVF-557-2

2

3

4

5

A B C D E F G H

1

VF-81

VF-81VF-81

47016V

G1CATHODEGND

G2

NC

HEATERNC

FOCUS

VIDEO OUT

12V9.5VE

EXT DC

NCNCVF VIDEOEXT DC16:9 ONG TALLY INNTSC/CCIRVF VIDEO (G)EXT DC GNDDIM INDIM OUTNCNCEXT DC GNDNCNCNC

V.DY1V.DY2

!!

!

PEAKING SW

REC TAL IND

7-3BVF-55 7-3

2

3

4

5

1

A B C D E F G H

CN-2742, LE-303, LE-304, LE-305, PS-703, VF-82, VF-85, VR-BOXCN-2742, LE-303, LE-304, LE-305, PS-703, VF-82, VF-85, VR-BOX

NC

NC

VIDEO

GNDR-TAL

NC

+12V

16:9+9.5

PEAK

NCNTSC/CCIR

G-TAL

CONT1

CONT2

CONT3BRT1

BRT2

BRT3

PEAK1PEAK2

PEAK3

CONT1

CONT2

CONT3BRT1

BRT2

BRT3

PEAK1PEAK2

PEAK3

9.5VE

12V

9.5V

E

PEAKING

EXT DC

REC TAL INDNC

NC

VIDEO IN

EXT DC16:9

G-TAL

NTSC/CCIR

VF VIDEO (G)

EXT DC GNDDIM IN

DIM OUT

NC

NCEXT DC GND

NC

NC

NC

!

!

!

!

!

!

!

!

CN-2742LE-303

LE-304LE-305

PS-703VF-82

VF-85VR-BOX

7-4 BVF-557-4

2

3

4

5

A B C D E F G H

1

Frame WiringFrame Wiring

VF-82 VF-85

V-DY

CRT SOCKET

LE-303LE-305LE-304

PS-703

CN-2742

VR-BOX

VF-CABLEVR-BOX

VF-81

Q302

H_DY!

!

!

Frame Wiring

8-1BVF-55 8-1

Section 8Board Layouts

CN-2742, LE-303, LE-304, LE-305, PS-703CN-2742, LE-303, LE-304, LE-305, PS-703

CN-2742 -A SIDE-

CN-2742 -B SIDE-

LE-303 -A SIDE- LE-303 -B SIDE-

LE-304 -A SIDE-

LE-304 -B SIDE-

LE-305 -A SIDE-

LE-305 -B SIDE-

PS-703 -A SIDE- PS-703 -B SIDE-

8-2 BVF-558-2

VF-81, VF-82, VF-85VF-81, VF-82, VF-85

VF-81 -A SIDE- VF-81 -B SIDE-

VF-82 -A SIDE- VF-82 -B SIDE- VF-85 -A SIDE- VF-85 -B SIDE-

BVF-55

The material contained in this manual consists ofinformation that is the property of Sony Corporation.Sony Corporation expressly prohibits the duplication ofany portion of this manual or the use thereof for anypurpose other than the operation or maintenance of theequipment described in this manual without the expresswritten permission of Sony Corporation.

Le matériel contenu dans ce manuel consiste eninformations qui sont la propriété de Sony Corporation.Sony Corporation interdit formellement la copie dequelque partie que ce soit de ce manuel ou son emploipour tout autre but que des opérations ou entretiens del’équipement à moins d’une permission écrite de SonyCorporation.

Das in dieser Anleitung enthaltene Material besteht ausInformationen, die Eigentum der Sony Corporation sind.Die Sony Corporation untersagt ausdrücklich dieVervielfältigung jeglicher Teile dieser Anleitung oder denGebrauch derselben für irgendeinen anderen Zweck alsdie Bedienung oder Wartung der in dieser Anleitungbeschriebenen Ausrüstung ohne ausdrücklicheschriftliche Erlaubnis der Sony Corporation.

SONY BVF-55 Viewfinder Service Manual

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Transcript of SONY BVF-55 Viewfinder Service Manual