• j., .

!-:z~i !NTEC'~TED 1@1 CDttlPlJfER ld_~J SYSHt'V1S, !f\C.

UNPACK AND SE?-UP INSTRUCTIONS

IMPORTA.~I Read This Before Unpacking

p • M. . .,., . • c: .._ (M'T'S' d - . I'" ...iot!1 yot:.r ~:.ll.crocomput.er .i.rairu.ng ..... ys L..em ... ) an .Ln-c~::-race

Tra.:Lni.ng Syste:n (ITS) are shipped tc you completely assembled and

tes~ed. ~owever, before operating your Training Systems, you

shou:!.d ~onnect and.test the various coraponents to ensure that they

have- ar::-ived intact. This process wi.I.1 also assist you i:i becoming

familiar wir:h the Tr~ining Systems and their ,'.2.ccessories.

- 1 -

STEP -1 As you unpack, check off each of the items in the following packing

list.

Qty

1

1

1

l

1

1

1

1

1

Packing List

Course 525, "Self-Study Microcomputer Software/

Hardware Training Course (MTS) (if included)

Stock No. Description Check Off

15605

20032

26001

26004

Microcomputer Training System (modified)

Microcomputer Training System Workbook

Looseleaf Binder

Coding Pad

Course 536, "Self-Study Microcomputer Interface

Training Course (ITS) (if included)

Interface Training System

Microcomputer Interfacing Workbook

ITS Experiment Kit (See Step 2)

Looseleaf Binder

(

(

(

(

(

(

(

(

15601-C

20034

15606

26001

15612 MTS·/ITS Modification Kit (see step 3) (

)

)

)

)

)

)

)

)

)

- 2 -

STEP 2 Unpack the ITS Experiment Kit from the plastic bag and check off

the parts from the following parts' list.

ITS EXPERIMENT KIT PARTS' LIST

..

Descriotion Stock No Qty.

Thermistor, disk, dipped in .epoxy 15617 1

Propeller,.5.5 x 4P 136i9: . .. 1 . .. .. '·"'.

Motor, hobby, w/tinned lead wires 13617 .. : l

Speaker, w/t:inned lead wires 15613 .... 1 Sleeve, :not or shaft adapter, (piece of 1 inch long

'. •. fuel line) ...

13619 .. ·-· ' .. 1

I ,. ··- . -Cables, audio ~

15616 ~ ... 2 I

... ~ ·~. - - - ·- ., ~ ,i r· .. , . .,., Resistor, lK, 1/4 Watt, ~ ,,

12608 ,.

10 ) lo

,. ,.

Wire, jumper, 8 inch lg.' stripped . 13621· ~

4 ·Program Cassette Library (One C-3-0 ·: pr_e-recq;:de-d · _ -~ .

4 .' ~ - " ~

G.a.ssette for Crs 536) 1561~ 1 --•·

, __ , •'" -

Capacitor, lmf. 15V, Electrolvtic 12632 1 - . ..

Resistor, lOK, 1/4 Watt, 5% 12612 2 ·- ..

.... ,,

Disk wneel 13623 1 -..

Sensor, slot XCT8 . , ... 15615 1

Resistor, 180 Ohms, 1/4 Watt, 5% (Brri ,-Grey~ Brn) 12616 1 I

- I

Interconnecting Asaembly 15602 , i -I.

,. ......

l ~ .. .... . ....... --

...

::,. ... .. . ·- .-r, . ., ·-. - ... -· "' ... ~- ~· ,,,.., - . . ,, ...

i

I I

..

t/ ._

~

---~

-~

-

--to--

---

----

- 3 -

STEP 3 If you ordered and received your Microcomputer Training System

(Course 525) with the Interface Training System (Course 536),

then you may skip this step an.d.wgo .o.n to ... Step 4.

Jf you ... 9rdered:. and received your MTS separately from the ITS,

. $pme mo.4.~fica~~ons to _the MTS may_ be required in order to· ·

_ operate ·the ITS. This modification is described in detail in

the following pages (and in Appendix B of Course 536) and al1

re·quired parts are included with this shipment (MTS/ITS Modi-

fication Kit). Comparing your MTS to the following illustrations,

wi·ll determine if the modifications have already been a.ccomplished . ...

If the modification is required and you believe it to be beyond

the electronic technician ··capability available to y.ou·,. please

--~~turn your unmodified--MTS PC .. board with the MTS/ITS .M6dification

Kit (stock number 15612) "'ar1d a shipping label for its return

to re's at:

MTS "Mods-.

Integrated Computer Systems, Inc.

3304.Pico Blvd. P.O. Box 5339

Santa Monica, CA 90405

·-and we ·wi-11 insta11 ··the ·modification free of charge -and. ..... "

·-·immediately return---the .modi.fi..ed MTS to you.

.. /i.-1J'.'. ·-: >>

,.{lj!iil'·

- 4 -

MTS Interface Board Modifications

.. In order to connect the Experiment Board (ITS) to the unmodified MTS

board it is. ne-cessary to bring some additional signals from the MTS to

the 100 ?in edge connector, ?1. If you have the unmodified MTS board

(part number 1052501-1) you may make these changes yourself. If you

have the modified MTS (part number 1052501-iD) .. thes·e ~c.ha..nges are

unnecessary.

a second modification is necessary to fi£ a potentiai ~proo lem .. :~<Cf,_ your

board is designated REV.E, this second modification is NOT necessary..

To modify the MTS, the f6llowing tools are required:

1) Low wattage soldering iron (20-40 watts)

2) Multi-core solder (Sn 60)

3) Wire strippers

4) Wire cutters

5) X-ai::to knife or razor qlade-"·· "'_, · "'~~ .. ,, ·:':·:":·:·.«""~""'""""'•'" .

The following parts are supplied in yo~r:M:r's;ifs',t-1odfii::.c~ii;6;t·Kit.··· -~~,(Stack No. 15 612) · ' . . .. ... · · · ' .... "·~ ; .c.;

1) 1 - 2n2222 transistor ,!,,._, : .·-. ~,J

2) 1 - 1 K 1 /4 watt resistor ~·cer'b~n\ ;~·faek,:: Re4-1j

3) - 10K 1/4 watt resistor (Brown, Black, Orange)

4) - 1n4148 Diode

5) 3.- 4 feet of ~umper wire ' ;~ ... ?.

6) Heat shrink tubing

7) 3 - 8.2 ~watt resistors (Grey, Red, Red)

- 5 -

Flip the MTS board so that the solder side is face up and the keyboard

mounting assembly is to your left. In Figure 1 , P1 is the 100 Pin

edge connector. The "A" side corresponds to the pins on the component

side of the board and is the set of plated through holes closest to

the edge connector. The "B" side corresponds to the pins on the

solder side of the board and is the second set of through holes from

the edge connector pins.

The ·signals to be tapped (~_n "Board Designation" column of table 1

are marked on the component side of the MTS board. Follow the

step-by~s~ep procedure as outlined in table 1 and depicted in Figure

2 .. ': ' ·: -· ,.

Figure 1

P1 100 Pin Edge Connector

N

<1.)

t.. ::3 t:O ..,...

c.:..

I

0 • ••

r·~u•mi ••••••••••••• • E:!

c 0 .....

.-.> (tJ

0 ..... c.... ...... "O 0 ~

Cli E-:%:

c.... 0

0 -I -

• • .t!:3 ... . ..

6

0 ............. ~········ ....... 4 .. •••••• 0 ............................ 4 .......... .

•• •• • •• • ............................................. • . ................................. .

• . ................................... . ········~····~·~~ .............. . ...................................... . .......................................... . • .....................................

STEP

1

2

3

4

8

9

10

',., CONNECTION

"':From_ <Baa.;:d''

_: t.'Qesignation ,,.,,...t"

IOW ,IOR

MEMR

--r~ tviEMW -· ·. ,

IN:'I'R-·

-, ,·IN1rJ~

PC~2

PBg~

.To f Edge Connector

_Designation Side/Pin

·~-

A35

A27

B7

B20

Al8

A25

A31

A26

·:823

B22

( '.,, ~., -.r,,.

LENGTH OF JUMPER WIRE (INCHES)

3

3l-.. 4

3

2

il.. 4

31.. 2

l.. 4

3

4

s

·i.WtF:§;S/: 1 RESET Signc;l can be tapped from Ul (74LS~4)

.z ... ~ .. P-C-~- is -.,8 2.5.~ .. port c bit ~

3 PB~ is 3255 port B bit ~

-· ).· .1 "

'.f . . ,. ~\' ~ ',\-

, ·· · ,, ,,, ... . _, Tab 1 e 1 :· ~': ,, --- " ' • ' '': i <• '

'. ~:: · , 'St'"e_ps 1'-10 of MTS Modi fie at ion : ~;. ~· .'ti--. !-, V r ' ill >it>

" "'"'°'· ~"°"" 'IV' . ~~ ~ '

i I I I

I I I I I-,,

i r i

I

M

8

en c. 0 .....

.o.)

'° C) ..... ~

"""' "O 0 x -

0 .. ~ . ............ .. ·-c=::J-- : 0 ..... ; ... ~ ..... r ........ { f .. I ·."- R Joi . ·~tJ I ~ 1 0 ............ ~ . .. • I ~~ .~R$ • • • • • • • • • .. • • • ~·.. • • • • • • • ~ ~=-----+-.. • ••••••••••• I ·~ ?·~······· ..... . ~ ·1 . ~ w- ~ 8 22 4 • .., : I I • • ')9 • ~ ~· • ,. •• •••• ... . ~-. • 55i• • !'"""1

•••••••••••• • • !!j ~ •••• ••~ • • ·re • <x:: r ;;:; J 0 . . . • . • . . . . . . . . ~ • • • • -1. • Y 1 • ~ J r· .... ---;···· CL ::.::.:.~ .. :.:::::~ ~ .:?-;3 • • • • • • • • • • • • • l • ~ ,~ aJ • • o • • • • . • • :..J"\ ~

•. _, ••••••••• , f:i • • • 5- • ai:a• • •. ~ ··= • •••• • •• • • • • • ••• . t •• • : ••

I . .. . . .. ... ... . . . . •. • . . . . . . . . . . . . . . . . . . 0

~ ;· ~ r . s rt.-·:· · · . . • .= : :v~ . ) ·• •••••••••••• ....! i-i--::1 ~ • • • • ..,-:...._ ••••• • • • .. •• •• _.. • • • • • • • • • .. • -~~o e .. • e. • e• N . .. . .... . . . .. ~

:: 1. • ~ ~-- ·•• :.~ . . . . ; .. ·~·. . .... . ... ~•:-·. - : .. : .:

• ••••••• • ••• • I , 7ESI • • o ••••••••••• • ..< ·•.;.,: . •.:.-. .... "'1 1 ) • ·:a i I¥•• •.• ~ ...... ~ - ·~ =~ .. .., ,~ • ; •.. .... . •.. •... .-~g

~· ........ • 4"d, ·: ·: • • • • • • • ·~ • r • • ! : . : .'.•- .. ~. co ~ .,~ 1 .,. <' ~. •• • ,, •.•• • i... • ••• i. • ..- - • • •••••••• •·. • • • • . c • . ~ .-. :.n . •• .. ····••·• • , ·r ,. ... • ...... .... • .. • • ) ra; • ~ . ..• . • ..••. ":. • •• • • .. • .............. • l.1 • • • • • ~-<""! ... • • ...... •• • •.••• 0

~ ... ..~I.A~ ~ . . .~ ?"•..... ..;:t •••••••••••• •y • • ee c-:-~ '"" i:;,_.I .. ~ .. ,.•;••~• •. • . ~

f

! . • ~ ••••••••••• ., E \.Q ~...-rr.~ ... e;e•••~·:.~o

t. -:Q:--'~, ••• J I ...... e I••• •• •'- ::.::;: ., • ·, · .••• · .•• ) ~ 3 • ~ . 14 !~ . J ~ ••• r:~ i.J-~ ~ ~ -- ". .............. •••••••••••• ~·· •• - ~ 0

: • • • • • • •• • :1 t r~ --

;---::--a

'-..J .... • • • • .. • ••••••• • ... ;: .. ~ !~~ • • • • . •• 3· :... ~ ·•-.:-1 • • = .. • ..... :·. ;::: -i: -, e::i ca

0 c::

. en :.;..

~

. rl I c ... •• • .... .. ~ ~ -N1 • • • ·.··.··.a•-•·-!:.. • :1 : ~-=~1 2:=! • ••. • . . ., • . .. .. .... • • • .. •. .-..:.. .......... elc:"t {...,.

0 • .. ..... • • : Q • • • ::J .... . • • ef • • • : ~. •• J! .. ~ . . ~ ..c ., ... )e

J.J .- • • i.. . ·;, et i I )!It

"!!"' ·- • ~· ·: -c ,• ,. - ~ .. \. = · .. ~

. ., . . ~.~,. . .......... •••••.: . ~ . .,~ ~ .

• ~ • .J . < ~<!® ·1 C!:3• ~(""! • • • •• • • •• e<!)@ ~ • • • ~~e\! ~ ~- ____ . ___ . • • • • • •1 -. ...... ..... .... i.,....~

••• • • •

• ..

E'ree Area

0 0 0 .............................................. 0 ........................ ~~ ...... ~ ....... ~···· . .. . . . . .: ... ·~ ;:· ., .... . .­.............................................. . .................................... . . ................................. . ........................................ ............................ ~ ... ····

··~················· .............. 4 ••• ..............................................

1 1

Refer t,o·.Figure '· 3 ·for the following steps.

To al~ow. ::ro r ~ecod ing of more memory,

remove. ~h~ tfabe between UB (74155

chi p·) ~, ~ i.'n ·~ 4~;. and ·ground • A s e ct ion o f ' t ... ,_.... •'• .

the , printed· .. circuit must be cut and ' '.;_.,,.

removed bet w .e en . t w 0 s 0 1 de r p 0 int s ' a s

·marke~d in Figure 4 • Usirtg the X-acto

knif.~:~ or> ri·a2u,,r blade cut the trace as ~ .

- 9 -f,'

'

traC:~e:,·and ·pry up .. tne. ~edge from the

fiber bo~rd b~ckin'~· ·Now peel the line Figure 4

Trace Removal ' - <

... ~ .J1 \ ...

" ~·

of p11

a~:tJ.ng, ,aw~y from th.e .. board up to· ' .,

the-~., .sbJ.:0'.er' poi-nt, a::o~t cut the trace from ,....4"'J~.- t- ~ :· 'll .... ·1'

.. ~~"' ·" -'¥ !'' .r" ·-~-,, .. , ~" ,-, ... ~~ "'"°--"> '""' •'

t l'te-· &'<» a--r·cl._ ... C>·--~. -~~ ., .

• •~'>'1"'~,l)oi,'!I«''" ~~ -lt·W·.;-~'\;_ ·,

~ .. 1 2 U 8 P:i '!l ~~4 · to· :Add r e-s s Bu.s 10

{~-

No~~ c 0 n n e c t u 8 p in 1 4 . t 0 Address Bu s 1 0 10 c ate d 0 n the 1 0 0 p in edge

co~nector as side "A"~hole 15 (P1-A15). ~ ,, ..

~ ' \ ' . ~

•" .. ..,, ...

~ 'l ~;r·

13 Diode Installation

.,, {'"' -~ '!'- ~ .. ~- ' \ ,,. z

In st al f: the, ... , n"4;1'1~'8."dTO'd'e'' rY-;om u 1 < 7 4LS04) pin 12 to P 1-A 15. Make sure

, ~·· ,·;'·· ..... ~ ~

.J> 't~-· :r.

- 10 -

that the cathode side is towards U1 pin 12. The cathode side of the

diode is marked with the dark band. Refer to Figures· Sa and Sb

T'' for proper diode orientation. Insulate both ends of the diode with

, .. the heat- shrink tubing. CAUTION: the tubing will shrink anytime heat

is applied.

l.N4148

Figure Sa Figure Sb -·

Diode Orientation

- 11

14 Remove Resistor R62

Remove resistor R62 from the component

side of the board as shown in Figure

B-5. To remove R62, grasp the resistor

from the component side of the board

and heat each of the solder points

until that end of the resistor is

easily extracted. If . the resistor

binds, check the solder side of the

board~~o see if the resistor leads are

er imped··: Straighten the leads Figure 6

R62 Resistor Removal

necessary for extraction.

' Transistor Circuit Installation

Install the transistor circuit shown in Figure B-2b in the Free Area

cf ·-t-fte ·"Mr5""··bo·a·rd~· A· suggested parts layout is shown in Figures 7a

and 7b . NOTE: The transistor and resistors are mounted on the

component side of the board and the solder connections are made on the

solder side of the board.

Suggested Parts Layout Component Side

'

M.U:2 I

""0 1 1 . o:Jt \ ~l

Figure 7a

Transistor Circuit

Component Side

Suggested Parts Layout, Solder Side

.J "'-·

- 12 -

~ ,---2..'l-i:Z_l_:Zi---,- I~ifA (Ul4, Pm 23 JF 8123 C:-l.I.?l

( . ·= ·~. <r-:.:! ll

uO o~JK I

YI

Figure 7b

Transistor Circuit

Solder Side

- 13

STEP 4 The M'I'.S/lT.S combination requires a greater capacity power supplJ'''·

than the MTS alone. If you have ordered and received a power

supply from ICS of the following model numbers, please return

i.t and we will immediately send to you a replacement of the

required capacity:

XENTEK

XENTEK

XMlS-510

XD114-512

All other power supplies provided by ICS have the required capacity.

Plug the ICS power supply in to a 115V AC source, then connect

the output cable to the MTS board via the cable attached to lower

left corner of the MTS circuit board. Proceed to Step 5.

If you did not purchase a power supply from ICS, then read the

following discussion which describes the MTS/ITS power require­

ments. Note t.hat these requirements are greater than those

required for the MTS alone.

ICS MICROCOMPUTER TRAINING SYSTEM POw'"ER REQUIF.EMENTS

The Microcomputer Training Syste~ is del.ivered as a ready-to-use unit requiring only connection of power supplies for operation, The lfiS is designed to operate wi::.h only two DC power sut>plies, +UV and +sv, AJ:xmg the parts used in the MTS, only the 8080A requires another supply voltage (-5V), which is generated internally.

Both DC power supplies should have sufficient cunent margin over the following power dissipation specif ic.ations :

. li ___________________________ ~_· _s_v __ ~ __ s_' ____ z __ ._o __ A __ ~ ___ • __ ....i MTS Power Dissipation +l.2V ~ S\ 1. 0 A Max.

External powe~ supply lines should be connected to the board edge finger pins marked +57 ~ +UV and G?ID.

- 14 -

The RS232c and TTY Interface circuits require -12V in some applications. This is discussed in.Course 536, Appendix E.

Board Edge Finger Pins. +SV

STEP 5

STEP 5.1

STEP 5.2

STEP 5.3

- 15 -

res MICROCOMPUTER TRAINING SYSTEM TEST PROCEDURE

Perform the ICS Microcomputer Training System Test Procedure on the

Modified MTS Board as detailed in the following pages (reprinted from

Course 525 Workbook, Appendix C).

Set switches on left edge of board to "ENABLE" and "AUTO". LED's should display:

Enter test program as follows by passing indicated keys :

Press Key~

BOD [;J[]Q BOD Continue entering remainder of program from the following coding sheets (pages 19 and ~) from address 8203 to 8248+. Once program has been entered, check to be sure that all instructions have been enetered correctly by pressing the keys:

\ .. ' ... etc.

Test the RA.~ as follows :

Press Key~

8200

8200 21 I

8201 00

8202 [ 84

Disp_!!Y Should be

s200 I 21

* 81FF I

... [;J

~ *(IF YOU HAVE 1024 BYTES OF MEMORY THIS DISPLAY SHOULD BE 7FFF) + (press the jNEXTl key after entering the data at 8248 so that

8249 is displayed in the LED's)

- 16 -. . .

STEP 5.4 Test the ROM and keyboard as follows :

Press Key~ ~p~y Should be

[] I 145B SDOO }

D I 8E4C 2601 l

[] I SODB F302 I

[J I 60BD 9903 I

[] 04 I

[] os I

[] 06 I

D 01 I

GJ os I

D 09 I [

• • ·~,- ... ~ ,.., 4• ' '

- 17 -

STEP 5.4 Press Keys Display Shouid be (cont'd)

[] OA

D OB

CJ QC

D OD

D OE

D OF

STEP 5.5 Test the command keys (excluding RST) as follows

Press Keys Display Should be

~ 11

EJ 10 , .. ~· '"~~............. • .. ¥,

EJ 16

[;] 17 1

STEP 5.5 (cont'd)

Press Keys

Repeat keys 0,1,2,3, and check previous list of displays for these keys.

The basic functions of the ~TS are operational if all displays specified above have occurred during test sequence.

rfote : If the RA.i'1 test fails, try the ROM test by pressing the following sequence of keys

Press Keys

- 18 -

Display Should be

12

j 14

13

15

G ___ ,.

L ~···· ,., ... _,_

1-LU LU ..,.. ... C/)

c:J z 0 0 u

~ w 1-

. CJj

>­CJj

(.'.) z z <( a: !-a: UJ 1-::J a.. 2 0 u 0 a: u

c.n ~ UJ i-v, >­CJj

a: w .,_ :J a. :E 0 u 0 w

~ a: c:J w 1-z

\

.. 0 ..... D R

8 ;2- (.) 0 , 2

3

4

5

~ :i.. 0 6

7

8

9

A

6

'?' i-. 0 c D

E

F

8 7- I 0

1

2

3

4

5

6

7

8

9

~2-( A

B

c

D

'·· E

F

8 0 , 2

3

4

5

6

7

8

CODE

?--. I 0 0

<? 'I I I ;z_ 0

? 2-I ·y ~ '2-(9 ~

2{ 2-

I ~ 2 0

:L R

'i ~ I A 7 7 B (£'

c.. z... I ,4-

? 2-.,

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7 c l3 q ~ A 0 ~ ? 2-c.. j)

p t

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- 19 ---

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a: w ~-::, a. :? 0 u 0 w

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A D D R COOE

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STEP 6

STEP 7

STEP 8

STEP 9

STEP 9.1

STEP 9. 2

Unplug MTS board from power supply.

MTS to ITS Connector.

The adaptor circuit board via its connector is plugged into the MTS,

with the ribbon cable running under the MTS and folded to come out to

the left, as shown in Course 536 Workbook Figure 1-1. The cable is

plugged into the connector at the right hand side of the interface

board. Make this connection.

Plug in the power supply (see Step 3) and then connect it to the

MTS board via the cable at the lower left corner of the MTS circuit

board.

Load MTS/ITS Test Program

Perform the following procedure to load the MTS/ITS Program from the

Program Cassette Library.

Find the test program on the Cassette Library tape and listen for the

solid tone which PRECEDES the program.

Connect the cable to EAR on the tape unit and CASSETTE EAR (screw

terminal #7) on the ITS board.

- 21 -

STEP 9: ... '3 . Enter the beginning load address into Reg Pair H. The beginning

ad.dress of the test routine is 8200:

--B EJ 8 n -88

~[;]

~-~

STEP 9.4

STEP 9.5

STEP 9.6

STEP 9. 7

STEP 9.8

STEP 9.9

STEP 10

consi:.ant glow.

Depress [?.uni

~ d.i . .sp lay of I .J JZ~

a succsssful load.

~ ..: ., s .... 1 :":I~, o" ( -="--1; -d' -~ ,-os a.."l u."lsucces s =·~-'. :oad, so re-.~ i...,.~. ~ ... - ... J. __._ ~ -·· - ........ - -

Insp.ect RAi.'1 by comparing it to the program listing to verify a

proper load: Press ~ I ~EX11 I NEXT! ...

MTS/ITS Test Procedure

Perform the following procedure to test the MTS/ITS systems together.

STEP 10 .1 Verify that the program was loaded properly by comparing RA.i.'1 memory with

the program on the following pages, by pressing the keys:

[ RST I .... etc.

STEP 10.2 RUN the Test Program

[~

[RUN I

- 22 -

- 23 -

3TEP 10.3 The 8 ITS LED's and MTS 7-segment LED's should alternately display at

STEP 11

.STEP 12

a ~ second blink rate:

ITS MTS I ! I I

0-®-0-®-0-®-0-0-1 l I I

AND THEN DISPLAY

ITS MTS

t I t I

-®-0-0-0-0-0-©-0 I I I I

This test exercised the interrupt system and one of the 8253 timers

(Timer 0) as well as the connector cable.

If the tests were successful, then proceed with the appropriate workbook.

If the tests give questionable results, perform the following diagnostic

procedure. If your board still malfunctions, call us at (213) 450-2060.

ICS warrantees its hardware for 9U days from date of delivery against

defects in material or workmanship.

MTS/ITS Diagn?stic Procedure:

Test No. I

Symptom

8200 does not appear in MTS display

Possible Cause

Poor Ribbon Cable Contact

Possible Fix

1) Turn power off

2) Disconnect ribbon cable at MTS

3) Power on, Press RST

4) If 8200 now appears, check ribbon connector (Test Number III)or ITS.

5) If 8200 does not appear, check powersupply (test No. II) or MTS.

Test No. II

Symptom Possible Cause

MTS operation erratic Insufficient Power

MTS display flickers or flashes

RAM memory changes

Test No. III

8 LED's at top left corner of ITS are all off

Reversed Ribbon Cable

Oxide buildup on MTS edge connector

i~IREclfsl ~ REG D 1161

11 I [NEXTj L__J

! ADDR 0 Ii 3 i : 7 I

- 24 -

Possible Fix

1) With MTS and ITS connected and powered up, check the voltage levels:

2) 5V supply must provide at least 4.80 volts.

3) 12V supply must provide at least 11.5 volts

1) Turn power off

2) Ribbon cable at ITS connector must have colored edge stripe towards the top of board

3) Ribbon cable at MTS connector must leave small printed circuit board under the MTS

4) Compare ribbon cable connectors with Course 536 workbook figure 1-1

1) Connect a wire between CASSETTE AUX AND CASSETTE EAR on barrier strip on ITS board

2) With power on, the "OUT" LED should glow with full brilliance, and the SYM light should glow at less than full brilliance

3) Depress the following sequence of keys:

INEXTI lol I NEXT I

~

I ) I i 0 ! ___

Isl ! RUN f . ___ , ---

-26 -.. °"J"ut"" !"\,,, .~ .. T _;_ .~

I 1'/ • ;'1 1- ., :' ;~ C/8/78 .. ..

8 ? r;i 0 MVI A , 8 o ' , 2 ¢

.2 1) "3 0 Lt T C N T 1 o.f/" OVT

3 d 7 l-1-------------'-.;.....J~-"-----"---+--:..--i--4-...... --i--~-;..~!o---+--------------------------t . ~ 4 3 £ M v 7 Pr· , 8 ~ ::::±- ? I ~ A ~ 0 '.;I l :c i-------------+-;:;o;...~ ..... ----µ.....~~---i--.......,:~~~~-+-~!o---+----------...._---------------t (J'J s 8 a oi------------....... .;;;;:...~..._----"---'--'---i---4--...... --i--...;..-+-~!o---+--------------------------t E'--------s __ _..D~~3-'---.....+.-o~~~T ........ _....._~-+-N-+-T-1-Z---+---+--i-----------c~·---~-~-1-------1 o 7 ¢ F U"---------------~-"-----i--.._......_ __ ~...__.. __ P---+--+-~~..;---------------------------1

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c: ~-----------+__,jl---+-----......-. .............. __.~ ........... --P---+--+---~..;-----'-!---~-·-~ ----J------------i w 3 _.., . .:..J 1-..__ __________ _..._?_)---------------------....... --.._ ........... __ ,,__-+-________________________ _,

~---------4 __ __,~3.......,_~ ...... ----~~ ...... T" ....... _A....__.,._~~··3~~F-+-_o_,..,_,.._~----~-,._)_r; __ r_v_,_5_P_· _,1 __ y ______ --1

0 5 F ? I u.,_ __________ ....,--i..._,.._ __ --i,,__..;-..... --i---+--+-~,,__,.._......,--i---+--------------------------1

~--------~ _____ i..__13....._ ____ -i-.............. --1 __ ..__.__....__.. __ ..._...._ ...... ______________________ -4

i...._ ________ 7 ____ .n__,~1-.... ____ ...,._("", __ ~, ~l-' • ..,.._1....,..__._1....,._l...,__M-+-'-t/J_.,_...,,__-+-__ ~---~_l~a-0_._4_; __ 1_,_,_~_·~-·r __ r::f_ .. ____ ~ 8 1 4 i

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Q. y '2 i· F C :3 W~:tT T MP W A :'.: T Lu~;+ .le.~r I,)-~·,r· .. .:f ~ ...... .._ ....... ___________ i--..._, __ _._....,.. .............. ..._.._...._ ....... __ ....... ___ ...... __ .._ ____________ ......_ ______________ ~

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~ __________ 2 __ __.. __ ..__,_ __ __. __ ...__,__.. __ ~ ............. --i.1 ____ _.__._ _______________ ,_~-=--··----~-

• •

Test No. III, Cont'd

Symptom Possible Cause

- 25 -

Possible Fix

4) The "OUT" LED should blink rapidly for several seconds, after which it will glow brightly. Meanwhile, the SYM light should glow steadily at about half brilliance. This indicates that ~e '-oassette interface is fun<!tionin~ properly

5) If the OUT and SYM LED's don't behave, as in #4 above during a cassette load, then your cassette connections may be incorrect. Follow the instructions in Course 536 workbook, Appendix D and compare the cassette interface connections with the photo in Appendix D.

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