SERVICE MANUAL

MODEL PLUS 4 COMPUTER

Preliminary

OCT. 1984 PN-314001-04

Commodore Business Machines, Inc. 1200 Wilson Drive, West Chester, Pennsylvania 19380 U.S.A.

Commodore makes no expressed or implied war­ranties with regard to the information contained herein. The information is made available solely on an as is basis, and the entire risk as to quality and accuracy is with the user. Commodore shall not be liable for any consequential or incidental damages in connection with the use of the information con­tained herein. The listing of any available replace­ment part herein does not constitute in any case a recommendation, warranty or guaranty as to quality or suitability of such replacement part. Reproduction or use without expressed permission, of editorial or pictorial content, in any matter is prohibited.

This manual contains copyrighted and proprietary information. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permis­sion of Commodore Electronics Limited.

Copyright © 1984 by Commodore Electronics Limited. All rights reserved.

CONTENTS

Title

SPECIFICATIONS

OVERVIEW .......................................................................................................... .

PRODUCT PARTS LIST ......................................................................................... .

CASEWORK IDENTIFICATION ................................................................................ .

PCB LAYOUT ....................................................................................................... .

PCB PARTS LIST .................................................................................................. .

PCB SCHEMATIC DIAGRAMS ................................................................................ .

KEYBOARD MATRIX ............................................................................................. .

I.C. PINOUTS FOR UNCOMMON CHIPS .................................................................. .

RF MODULATOR 251844 LAYOUT ........................................................................ .

251844 SCHEMATIC .................................................................. .

RF MODULATOR 251311 LAYOUT ........................................................................ .

251311 SCHEMATIC .................................................................. .

Page

1

2

3

3

4

5

7

7

9

11

11

12

12

iiiliv

PLUS 4 PRODUCT SPECIFICATION

MEMORY

64K RAM. 60K RAM User accessible for BASIC programs.

ROM

32K ROM Standard (includes operating system and BASIC interpreter) with 32K additional ROM con­taining the built-in productivity software.

MICROPROCESSOR

7501 Microprocessor - .89 or 1.76 MHz clock.

DISPLAY

40 Columns x 25 lines of text.

COLORS

1 28 Colors (16 colors; 8 luminance levels).

CHARACTERS

Upper & lower case letters, numerals and symbols. Reverse and flashing charachters. All PET graphic characters.

DISPLAY MODES

Text characters. High resolution graphics. Split screen text/high resolution graphics. Multicolor graphics.

RESOLUTION

320 x 200 Pixels

SOUND

2 Tone generators or 1 Tone and 1 white noise generator.

VOLUME

8 Volume levels

KEYBOARD

Full size typewriter style design

KEYS

67 Keys total. 4 Cursor control keys. 4 Programmed (reprogrammable) function keys (up to 8 user defined functions possible). Color control keys. HELP key. Upper and lower case character set. Graphics character set.

INPUTS/OUTPUTS

PLUS/4 MODEM (User) port. Serial port. ROM cartridge and parallel disk drive port. 2 Joystick ports. C 1 531 Cassette drive interface port. RF Output-channel 3 or 4. Video output-compositel chrominance/luminance. Audio input/output. Power supply input.

1

PLUS 4 PRODUCT SPECIFICATION (Continued)

FEATURES

Built-in extended BASIC 3.5 - over 75 commands. Built-in Machine Language monitor - over 12 commands. Built-in graphics and sound commands. Screen window capability. Reset button (Warm start). Built-in integrated productivity software.

PERIPHERALS

C1551 Fast Disk drive, C1531 Datasette, MPS 802 Dot matrix printer, MPS 803 Dot matrix printer, DPS 1101 Daisy wheel printer, C1802 color monitor.

OTHER PERIPHERALS

C1541 Disk drive, MPS 801 Dot matrix printer, C1702 color monitor.

PLUS 4 OVERVIEW

The Plus 4 system is based on the 7501 microprocessor, an HMOS version of the 6510. Video pro­cessing is achieved by the 7360 TED chip. 64K bytes of dynamic RAM are accomplished by 8 (64K x 1) I.C.'s. (See page ). The system program is contained in 2 (16K x 8) ROMs. The system supports up to 128K x 8 of ROM banked in 16K sections. By software control, through the 7360, ROM can be completely banked out and RAM banked in for a true 64K of RAM (minus 256 byte pages), allow­ing 60,671 bytes available for BASIC.

Keyboard and joystick scanning are accomplished by outputting the row data on the data bus while addressing a particular register in the TED chip. This will in turn cause the TED chip to latch the column information.

A standard serial port supports serial bus peripherals such as the 1541 disk drive and the various serial printers. A cassette port is provided and the expansion port supports ROM cartrdiges. TTL serial ASCII is intended to drive an RS-232 adapter.

2

TOP CASE ASSY

Top Case Keyboard, 67 Key, KKR-I Nameplate Shield Clip, R Shield Clip, F

BOTTOM CASE ASSY

Bottom Case Foot, Self-Adhesive Paper Shield Shield Chip Shield Plate Insulation Sheet

ACCESSORIES

Users Manual Power Supply RF Cable Switch Box

PARTS LIST PLUS/4

C 251453-01 C 251501-01 C 251655-01 C 251855-01 C 251856-01

C 251454-01 C 950157-04 C 310156-01 C 310199-01 C 310197-01 C 310198-01

C 310196-01 C 310157 C 326189-02 C 904778-01

C - Commodore Stock Part

r'" ~

F I-"'"

~. ~ ~ i-'t"o'

Cc I BIO'IIIK!' !....,eag] /,\

~ II

~../

(eJI L&~....... II II UHUt UII III )

a

Plus 4 Casework Identification

3

SEE NOTE 1

DETAIL C

CNl

MI

Jl

@D FB'II

I·~; I FI!'1q

F852

8+ F!H7

FB5D

+8 FB51

:z FM5

E FB43

FB44 RI

FB55

~ FBM FB51 A A

F~Z

Fel53

FB'IS

0 FB5"

FB4"

DETAIL A

SOLDER 3 PL

PCB

BEND LEGS - 2 PLS

BOTTOM VIEW FOR M1

5mm MAX _oL-->""o----

PUT TO USE FB39

FB40

DETAIL C REAR SIDE VIEW

SOLDERING

CARTRIDGE GUIDE

~ I F1558 I ~ WRI~~ @ [ia:

IFBI51 I FBI'" I CRle t::]iLJ +

0[!] ~ ~@D IFBW I ~

<J ~@D

o~~ UI

~ (1'.50 ) @D@D (1:.45 ) @D

~ ~ .....--v-- ---v-- ....--...r--

l"-N :::J

CONTACT TERMINAL

@D

~

DETAIL A

SIDE VIEW "A-A" OF CNS

<n [] {\J

;t :::J ::l ::l

SOLDER Y2

BARE~ ~ BUSS r----~~--~~~ WIRE .L..----..----r---( PCB

DETAIL E

>Jl (\J :::J

0

enS

SHIELD BOX

U4

PUT TO USE FB27

<@I US

Uz.

@D

DETAIL B

m:QJ

<@

~~I ~+ @D @

~ ~ ~ ~~ SHIELD CAP

I. JUMPER SE:LECTIO.... FOR .. J7 " '- OOES .... 'T I.lAT"TER FaR IJTSC (-Oil. - SHORT FOR Go-PAL (·021. - OPEN FOR I-PAL (,03).

@D

~

NOTES - UNLESS 01HE.RWIS~ SPE:ClflE:D:

SOLDERING

FI

UI<.

U3

@D @)

~ ~ (nc. ) (nil)

~ ~

JUMPER WIRE

[Bi!:J

l < Ul

[![I:J

@) ve

~ !ELl

~+ ( C.3'\) r ~ 0

DETAIL D SOLDERING SIDE

@ DETAIL E

Plus 4 PCB Assembly

4

PARTS LIST - PLUS/4 PCB ASSEMBLY #310163-01

PLEASE NOTE: Commodore part numbers are provided for reference only and do not indicate the availability of parts from Commodore. Industry standard parts (Resistors, Capacitors, Connectors) should be secured locally. Approved cross-references for TTL chips, Transistors, etc. will be available in manual form through the Service Department in November of 1984. Unique or non-standard parts will be stocked by Commodore and are indicated on the parts list by a "C".

INTEGRATED CIRCUITS

U1

U2

U3 U4 U5

U6 U7 U8 U9-10 U11-18 U19 U20 U21 U22 U23

U24

U25

U26

7360 VLSI, Text Dislay (TED) Sub: C 251535-01 8360 C 251535-02 7501 Custom Microprocessor

C 251536-01 6551A (Synertek) 901895-02 74LS08 901 521 -03 6529B Single Port Interface

74LS04 7406 555 74LS257 4164-2 D-RAM 7700-010 PLA 74LS139 74LS175 74LS27 2312B ROM TED Basic

23128 ROM TED Kernal

C 251640-03 901521-02 901522-06 901523-01 901521-57 901505-01 C 251641-02 901521-18 901521-34 901521-22

C 318006-01

C 318005-04 23128 FUNCTION ROM, 3+ 1 LOW

C 317053-01 23128 FUNCTION ROM, 3+HIGH

C 317054-01

DIODES (Continued)

CR1 (cont.) CR2 CR11-20

Bridge Rectifiers DBA20C Sanyo 251026-03 Diode, Zener RD 6.8 EB 900927-01 Diode, IN 914 Sub: 900850-16 Diode, IN 4148 Taping

251819-21 Sub: Diode, IN 4148 900850-01

RESISTORS - All values are in ohms-1/4 W 5% unless noted otherwise.

R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13

4.7K 10K

470K 220K

18K 1.5K

470K 100K

1K 1K

12K 10K

1K

RESISTOR PACK

R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25

240 250 100K

1.5K 47K

100K 3K 1K 1K 1K 1K 1K

U27 6529B Single Port Interface RP1, 2 3.3K, 6 PIN 902441-29 C 251640-03 RP3, 4 68, 8 PIN 4 ISOLATED 326149-06

TRANSISTORS

01-03 04

DIODES

CR1

2SC 1815 2SD 880 Tip 29A 2SD 1266

902693-01 902694-01 Sub: 902653-01 Sub:

902694-04

Bridge Rectifiers S2VB 10 Sindengen 215026-01 Sub:

Bridge Recitifers DBA20B Sanyo 251026-02 Sub:

CAPACITORS

C1 C2 C3 C4 C5-C6 C7 C8 C9 C10 C11

Elect 0.1 J.tF 25V Ceramic 0.1 J.tF 25V Film 0.22 J.tF 100V Film 0.22 J.tF 100V Ceramic 0.22 J.tF 50V Elect 2200 J.tF 16V Elect 10 J.tF 1 6V Ceramic 0.1 J.tF 25V Trimmer 40 pF Ceramic 22 pF 50V

900100-40 251075-06 900150-11 900150-11 900022-01 900101-33 900100-25 251075-06 251029-02 251070-14

5

PARTS LIST - PLUS/4 PCB ASSEMBLY #310163-01 (Continued'

CAPACITORS (Continued' MISCELLANEOUS (Continued'

C12 Ceramic 220 pF 50V Sub: FB2-14 Ferrite bead 325563-01 251071-26 Sub: FB15-21 Ferrite bead 903025-01 Ceramic 220 pF 50V 900463-08 FB22-26,

C13 Ceramic 150 pF 50V 251071-24 FB28-38, Ferrite bead 325563-01 Sub: FB40 Ceramic 150 pF 50V 900462-41 FB41-58 Ferrite bead 903025-01

C14 Ceramic 0.1 p,F 25V 251075-01 FB59 Ferrite bead 325563-01 C15-C16 Ceramic 0.1 p,F 25V 251075-06 FB60 Ferrite bead 903025-01 C17-C18 Ceramic 10 p,F 16V 900100-25 FB61-63 Ferrite bead 325563-01 C19 Ceramic 0.01 p,F 25V 251075-01 FB64-65 Ferrite bead 903025-01 C20 Elect 10 p,F 16V 900100-25 C21 Ceramic 0.1 p,F 25V 251075-06 EM1,2 EMI Filter 251842-01 C22 Elect 10 p,F 16V 900100-25 C23 Elect 1 p,F 16V 900100-16 CN1 Connector 4 PIN (power supply) C24-C26 Ceramic 0.1 p,F 25V 251075-06 C 251614-01 C27 Elect 10 p,F 16V 900100-25 CN2 Connector 6 PIN DIN (serial bus) C28-C29 Ceramic 0.1 p,F 25V 251075-06 C 903361-01 C30 Elect 10 p,F 16V 900100-25 CN3 Connector 7 PIN MINI DIN (cassette) C31-C32 Ceramic 0.1 p,F 25V 251075-06 C 251616-01 C33-C40 Ceramic 0.22 p,F 25V 251075-07 CN4 Connector 50 PIN Female Edge

Sub: (exoab) C251630-01 Ceramic 0.22 p,F 50V 900022-01 CN5-6 Connector 8 PIN MINI DIN

C41-C51 Ceramic 0.1 p,F 50V 900020-06 (joy 1 & 2) C 251259-01 Sub: CN7 Connector 8 PIN DIN (audio/video) Ceramic 0.1 p,F 50V 9000010-01 325573-01

C100 Ceramic 0.1 p,F 50V 900010-20 CN8 Connector 18 PIN (keyboard) C 251841-01

MISCELLANEOUS L1 Noise Filter 251264-01

Y1 Crystal 14.31818 MHZ 251081-01 L2 Line Filter 906127-01 Sub: Sub: 251701-01 Crystal 14.31818 MHZ 251081-02 Sub:

Y2 Crystal 1.8432 MHZ 900555-02 L3,L3 Coil Inductor 1.2 uHpt 901152-01 Sub: 325570-01

SW1 Switch, Rocker C 251587-01 (PC Mount) F1 Fuse 250V 1.5A 903556-18

SW2 Switch, Push Button C 251260-01 Fuse Clip 906102-01 Cartridge Guide 310171-01

M1 RF Modulator C 251844-01 Shield Box C310172-01 Sub: Shield Cap C 310173-01 RF Modulator 251311-01

C - Commodore Stock Part

6

RE.

5

(2) @ 10

@

CD @ 18

~

17 14 13 2 6 8 9 16

RUN 1 CLR CTRL STOP SPACE (II Q 2

3 W A SHIFT Z S E 4

5 R D X C F T 6

7 Y G V B H U 8

9 I J N M K 0 0

:IJ. ~ L , : - '0'

~ * ; / ESC = + 0

DEL RETURN ~ @ f1 f2 f3 HELP

KEYBOARD MATRIX

; 1>OIN 1 40 RES ROY 2 39 R/W IRQ 3 38 O@

AEC 4 37 01 VCC 5 36 02

A 6 35 03 A1 7 34 04 A2 8 33 05 A3 9 32 06 A4 10

7501 31 07 A5 11 30 P@ A6 12 29 P1 A7 13 28 P2 A8 14 27 P3 A9 15 26 -P4

A1 16 25 -P5 A 11 17 24 -P6 A 12 18 23 -GATE IN A13 19 22 -A15 GNO 20 21 -A14

PIN ASSIGNMENT U2-251536-01

CUSTOM MICROPROCESSOR

A2 A1 A@

VDO CS@ CS1 R/W IRQ

MUX RAS CAS

1>0 COLOR ClK IN

K@ K1 K2 K3 K4 K5 K6 K7

SYNC VSS

--

----------------------

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

48 -A3 47 -A4 46 -A5 45 -A6 44 -A7 43 -A8 42 -A9 41 -A1@ 40 -A11 39 -A12

7360 38 37

-A13 -A14

36 -A15 35 -AEC 34 -BA 33 -SNO 32 -07 31 -06 30 -05 29 -04 28 -03 27 -02 26 -01 25 -O@

PIN ASSIGNMENT U1-251535-01

VlSl, TEXT DISPLAY (TED)

0-SHIFT LOCK

SW

_ .------, R21 IK RIB 411< RESET c:::J--------------_>-""""--O~ +5~ ~+!S\I

+5" 0-...--r-1t----, +5V 555 I +t..:!:J .(~f t1 fJ:'.f fr 5;i£ ti * I~~

~ J- I~V: .I~I ~ DISJ.... I.V ~ <=}--_______ ----, - 74\1'> U8 ~ RI'I BR£SET '-----' -~ lliRr-- ,;;".;

,..--.., l .12"", 7 1 3 W11R l l~f +'5V

A~ ~ RZZ IK tSV ~ lIt-II C2t ~Ul'-'.I_i_ir_---'-'----' J I

~~AA3~ r~· ~ sW21 _ 16V +5V _VV~ 74~ 5 4~ 7501 - ~-

IRQ C=~----------~ 1/>0 ~ 4 Vee AES A$I-''':-------"7-----------___

SERIAL BUS '" PIN FEMALe DIN

0,12

A TN

JU)'ill B PIN

MINI DIN

CNS

,--- '--t-----"-I AEC. AI 1-'7,---__ -1 ~ '----1 __ -"-12 RO), A2I-:S'---1

2 I---I=}--, ~~ '------+------"-13 IRQ

1 - N.C. '-----+----'-11 l/lolN

A3 <j

A4 10

A5 II

A" 12

A7 1:3

F1323 b

~

DATA F824 5

AS 14

A9 15

AIO Ii; CLK ~ 4

All 17

AI2 18

AI3 19 3 ATN ~

~

~

AI4 "I

AI5 Z2

KEYBOARD MATRIX

CONNECTOR

18 PIN FEMALE

DJ6

I tSV :!: C./ :'1I-:-,oJ 1<0 74LS257

'1---/

~ ~

AI4 2 A~"" 'tf>1-4'---...!lA""-'-00.} A""'4'-;r-_________ - ___________ -+--C=> A~ ~ B AI2 5-

~~--=-JA, Y, 7 As/AI2 AS .. 8 AI J II I Uq

4 ~ A4 10 A. V. 9 M I All

+SV AI3 14 Be I'-"-'''---'-'-j A 3 A~ 13 ~ sdi 12 A(" I AI3

-r-->

~B I

+5V -f MU)(.

C3l~1 .114 I r:+"II~,,-,,-, AS -=-z 'Itt 4 A/LAB AI 'j, 110 y~

AI~ 5 B. A3 !; ", V, 7 A3/AI0

AIS II 13 , UI0 Al JI/I A, y ~ ).7/,)'J5,/

""""''---=1 B. 2 ~ Aq 14 A3

r7-r..,.,,~-r..,7-;~_r~7'"?~---__;H_+_t_H_+_+_----./ A2 13 ~ sra 12."''-LA''!

74LS2S7 £18.' ______ .....

eLK 11.1

R/W

~ 37 38 39 40 41 4Z 43 44 45 46 47 48 I l :3

A15A14A13A12AII AIDA9 AI! 47 II' AS A4 A3 AZ AI A¢

~--------------------------.----'

15 IG 17 18 19 211 ZI 2Z t«,I KI K2 K:3 K4 K5 l</O K7

"Iss Voc

.,J;4 T

4 FBIS

--r-ot~V

C29 +f C3¢ .I}'i ,rij4 IIOV ---.

UI 73"1/1

MUX

5ND LUM COLOR

!r IIi' !o' ( I) (

5IJD LIJM COLOR

110 I 25 "" 27 ZB 19 3¢ 31 32

RAS CA'5 DQ>DI D2D3D4 D5~D7

Plus 4 Schematic #310164 (1 of 4)

R/W AI) - AIS

oo-DI

ORAM ADD NIl-A'"

7

M1 SCHEMATIC ON PAGE 11

PIN CONFIGURATION

VSS CS0 CS1 RES RXC

- 1 28 -R/W

XTL 1 XTL0

RTS CTS TXO OTR RXO RS0 RS1

-------------

2 27 3 26 4 25 5 24 6 23 7 6551 22 8 21 9 20

10 19 11 18 12 17 13 16 14 15

U3-901895-02 ACIA

-02 -IRQ -07 -06 -05 -04 -03 -02 -01 -00 -OSR -OCO -VCC

I SYNERTEK ISYP6551A 12 MHZ

FE 17 16 15 14 13 12 11 10

F7 F6 F5 F4

GNO

PIN CONFIGURATION

---

----

-------

1 28 2 27 3 26 4 25 5 24 6 23 7 22 8 21 9 20

10 19 11 18 12 17 13 16 14 15

U19-251641-02 PLA

-VCC -18 -19 -110 -111 -112 -113 -114 -1115 -CE -F0 -F1 -F2 -F3

TRANSMIT/RECIEVE CHARACTERISTICS

CHARACTERTISTICS SYM -02

2 MHZ UNIT

MIN MAX

* TRANSMIT /RECEIVE tCCY 400 CLOCK RATE - ns

TRANSMIT /RECEIVE tCH 175 CLOCK HIGH TIME - ns

TRANSM IT/RECEIVE tCL 175 CLOCK LOW TIME - ns

XTL1 TO TXD tDD 500 PROPAGATION DELAY - ns

RTS PROPAGATION tDLY 500 DELAY - ns

IRO PROPAGATION tIRO 500 DELA Y (CLEAR) - ns

(tr, tf = 10 to 30 ns) *The Baud Rate with External Clocking is:

BAUD RATE 1

16 x TCCY

CS R/W 00-07 -

L L DATA BUS 1-

TO PORT -

L H PORT TO -DATA BUS -

-H X ISOLATION -

-

L = LOW LEVEL H HIGH LEVEL X = IRREVELANT

R/W P0 P1 P2 P3 P4 P5 P6 P7

VSS --

MOS 6529B

U5/U27-251640-03 SINGLE PORT

INTERFACE

PIN CONFIGURATION

1 20 -VOD 2 19 -CS 3 18 -OB0 4 17 -OB1 5 6529 16 6 15

-DB2 -OB3

7 14 -OB4 8 13 -085 9 12 -OB6

10 11 -OB7

3MHz

LUM COLOR

5NO

(1.1. r­·'..II

Lot RF r----, I.2 ... H MODULATOR RF OUT f-J

1--_*---,3~ >B ~c~~ _________________________________ ~4 lUMIN FB~

c~~~--------------------____________ ~5 [OLDRIN lUMOUT~B~-__ -----~lU~M~-~=-~--4

MI .----

I

~~-----------------, lRI<b

RB I~~K

R~ II'. ~

r-...... -'l.N\r---l' I t L

~

R2 I~K

'~:'-f eli

I~~ IIDV

IK

+

RII 12K

RI2 I4>K

R3 41(l\JL

(14

..-___ 2!o.j SND COLOR OUT~":!...---------' ..........

~---_-O+5V

RI3 IK

.L £:19

121~pf

RS IBK

Q3 2.5C1815

Ri 41Qi.n.

l liaND COMP OUT 1

J7 II ~~

SEE MOTE 2

(2!/J IC.V

Ea I "",~~ '" 24/).n- 1U4.K.n.

-= .-..... -otSV I J: ellOf CIS 1.'2,..H I.I .... J .1;..1 L3

...... ~-----I'-c:::>--'> elK IN

Q2 25CI815

l> FB4 c

COLOR ~ 0 ~~~~-~~=-~--4 G 6

4 FB5 ~ COMP

5tJD

F81 ~ 2

~ ~-----------------~ .......... I------1 5

flC-- 1 N[-- 8

'---

~ o o 0> 1)

Z g z

-A(l\-AI5 ...... M/J AI

y

X A2. W A3 V

A4 U AS T

~A"~----l 5 A1 R

r--:.:::A8~--I p

I"-=-A9!...-----l N ~A 1:;:::0_--1 M

~AI~I_--l l

~A 1.:..2 _--I " ~AI.::!.3_--l J

~AI::!..4_--1 H

~AI.:.s _--I f

D~ - 01 '----'I>-__ ---..-...!D~(/J~---l 21 ~DI~--I 2 -u

(JJ Z ~02"---4 19

D3 18

D4 11 05 16

r-..::::cx,:!:..-_-I 15

,-O::..'!...-----l 14 ~rbl-l .... _f"""' __ --1 1--___________________ F~~T~A~III~n\wll,n~ _______ ~ ~

YI I 14.31518 MHi!. NT5e -5 17.73447 MHz Rq,AL C5) 32pf CL

cup [II

4'2~pf 33pf

-= RI 4.1K

1(12 22(jlpf

CI3 J I~pf

Q\ h, 2S[1815

f',4 22q,.r...

RIi. 1.51'.

FBll t 5V o--c::::::::1-----l 2.

FBle ~ l' I

.~ CST RD FBI I ~~~~--~C~5~T~W~R=T~------------------------------------------------------------------------------------------~ .......... r=t---~ 4

.c:---l. (51 5ENSE I ,"--" eSI MT R FBI2

~ 5

-.J 1)

z

t5V REG AT I.' AMP

0.11

POWER 7 PIN DIN

q VAC. f\ll.~MC

3

Cot . 22,..f ~v

~

Z -t9V 0-_-----.

FBI3 0 II .. 74010 L..------1::::::Cl-----l ID z

.4 V Q4 L--3~U11.>o~~t---...._1 25D881b

,..--.... --_-0 +9V -+

Cl CB

2~pf IFtj

UNREG c, .Ir-f

()

l-1 ~ z ~ CRL.Z---------r .......... t------l 3 tAl

..L !;,.SV '---

CI LOW

BRE5ET RAS

"'0 mQ A/Vi

rn ::::=:::- I 1 MUX 12

BA ~ 13

AEC ............. Z2 (RAM~N) ~c -- l

tSV L; .---- 1

~ A ~ CC ........ 25

NC -- AA

FBSB NC -- 86 q,~ c=::::>---CJ--- 24

'---

'WAC Plus 4 Schematic #310164 (2 of 4)

8

rrI [1

~ () o z z: fi -t o :0

n Z J>

PIN CONFIGURATION

NC ---------

A12 A7 A6 A5 A4 A3 A2 A1 A0 01 02 03

1-

--,-

GNO ,-

1 28 2 27 3 26 4 25 5 24 6 23 7 23128 22 8 21 9 20

10 19 11 18 12 17 13 16 14 15

U23-318006-01 ROM - BASIC

-VCC -cs3

-A13 -A8 -A9 -A11 -cs, -A10 -cs2

-08 -07 -06 -05 -04

PIN CONFIGURATION

NC ---------

A12 A7 A6 A5 A4 A3 A2 A1 A0 01 02 03

1-

-,-,-

GNO 1-

1 28 2 27 3 26 4 25 5 24 6 23 7 23128 22 8 21 9 20

10 19 11 18 12 17 13 16 14 15

U24-318005-04 ROM - KERNAL

-

------~

------

VCC CS3

A13 A8 A9 A11 cs, A10 CS2

08 07 06 05 04

AOOR CUI R/TN

~

KERN rn

..------. ....--.. ~

.--::

..--c:-:

113 14LSI:l I

I' ,ll<I U22,.1

-t-

t~V J.. [45 f·, .... f

21 28

AI 2~ C53

AI 2 23 21 z.I 25

A

un BASIC 8

q 23128 II

1 Iq

" ~ 13

01 12 .011 I

mrn rr t5~ ~C4q -!-"rl

- "-- -G4LSI15

1 ,AlA 61

U21 .---0 Q 1

1 1

I 1 + 5V ""I'! C;j

T I

112 -!-.I

I 1+L513~

I,/!! 2 A,

Do 1

,AI 121 -

5 3 AI 0,

0 Q

" ql I ~ U2~ Ot

as 1 CLK ~

I I T ":'

I .!lV

I C51

.---114

l'1l~Z7 .I .1 .... +

,.":' .A2 10 I 13 D Q

I r-'tI uze ., 1 I -t ~ I I T

I I 74LS21 -I ..

II A~ 4 q 6 0 Q ..N.J uze

1

I .,;. I

II CLR :r I 1- ~- __ I

.511 :!: C4" .I .1,..+

21 Izi" AI3 l'- CS3

, AI2 t All AI 21 A .. A 2§

3 .. 5 6; UZ4 7 KERNAL A

23128 Iii

1 19 0 :!!r 1

I ~

02 13 01

.1'iA I

~ro pz, 22

T

"F 14LSI.~ 14 a. ,Ii!. ,.,. 13 O. A,

10

~I~ U2Q) O.

.q 03

<---

.5V t5V :!: C~~ :!: C4' '* .1'" .I .1 ....

AI3L~~ 2'-

21 128- LII~ 2. 21 ~

.'3 A

.A12 Z ... 2

&I~:oru : .. " L...oa, c;dll It U

~~oru r:i.dtl ,rA Ala 21 Aim 21

, Aq ,Z~ .A8 f!i

Al Al ?o U25 U2' A~ .. Aif FUNCTION ,A~ 5 FUNCTION 5

,M LOW M --.; HI • A3 7 i:'\ 1

Z3128 8 2?128 III B 23"" £%4 q

.A4I I~ A I

1 Iq 1'1 III

0 11 ,. ~ I!I

0 13 12

~+ zz

*" 22

--e:;

--2. SOUND CARRIER SlLEc.T (PAL ONLY) .n

SHORT 5.~ MHo FOR G. PAL opru ~.OMH' FOR I. PAL

I, JUIAPER SELECTION FoR JI- J" 8· 2310'1 A < 231.8, 21128, 21'-4

NOTES - UNLESS OTHERWISE. SPECIFI£C

Plus 4 Schematic #310164 (4 of 4)

CI LOW

Cl LON

CI HIGH

CZ HIGH

10

COLOR. IN

LIlN IN

t8

AUDIO IN

/

RCA . .cHONO JACK/

L f C/ 221" ~.JOP

01

------------------

.lUI /.20

cs ISOP

--------

COLOR OUT

~------~+-----+ ~--~~-~r_----------------~

1?2J .2.2k

~:n C2~ .. MI<-3.2;: .s6"

R2/ ~8-/so

\) <:>

'" ~ "I I ?

~ ~ \)

~ ~ ~

COMPONENT PARTS VALUE: R = n, C F, L H

I I '

D

TOP VIEW

REAR VIEW

Q3, Q4: 2SC460 OR EQUIVALENT. Q1, Q2: 2SC1684 OR EQUIVALENT. 03, 04: 1SS198 OR EQUIVALENT. 02 : 1SS110 OR EQUIVALENT. 01 : 1SS119 OR EQUIVALENT.

NO. TERMINALS

1 N.C.

2 AUDIO SIG. INPUT

3 +B (+5V)

~ 4 SYNC + LUM. SIG. INPUT

CH¢ -r-CHJ 5 COLOR SIG. INPUT

D£TAIL (CH .S'N) 6 COLOR SIG. OUTPUT

7 COMPO. SIG. OUTPUT

8 SYNC + LUM. SIG. OUTPUT

9 RF OUTPUT

10 CHANNEL SELECT SW.

RF Modulator Layout and Schematic #251844

1 1

COLO/?' IN "

" '" LU/1 IN

1"B " '" (6 '@p

AUDIO IN '"

/

RCA. PHONO JACK/

221'- ~f QI L I (f

"...- ~4 ·000 '--11 -Ie ..,~ ..... s-t o COLO~ OUT .... 1/: .., ..

k~ ~, "'~ ~"., lUI 120

'O~ Q~ C2S 2.2Of l~4 Cs 11(", t2P =.220P ....

~~ DI ~ LUM OUT 10.#- t-.~ 0..<)

Cd : 11( .... ~~ '"' ~ COMP OUT

.,j;jOP :~ ~~ ~\)

1Ic~

~/a .,.."l/>:: ..... /()" cn ,.sp ~21 ~r ~~ e,f( .RIJ R~~. ell !~ Dj P I:lOP .;8 - ,so -{)

S6() IV4 ('8 2.7k. ;j3P I

It-<l'l "f ~ :~ \\ '" S60 ~7(}(XJP L4 CIO Qj J..S t C/6 C/~:~ L? ~

~

")'t' ~~ "1 \'t'>l \'t

~2J 5~ "i

2.2* c..2.~ /O"u

C20 2200. ~2$

6.8/<

110

~ 1:>4

Z ~~ C9 SP CI{,t-.. ~-I

"I .2.2P=~ "G-Ie .!! ~ f'J I~t " 3JP J'/,. ~

..... '" .up "" 2.2P ~ S ~ II(~ ~

8

~!t ~7 C~ Q4 : J . .31<....a.21<-M,.

............... c2.2 "- 'l(J')P

11.26 .---.

C2,j

~.8/( ~~

COMPONENT PART5 VALUE: R = n, C Q3, Q4: 25C460 OR EQUIVALENT. Q1, Q2. 25C1684 OR EQUIVALENT. 03,04: 155198 OR EQUIVALENT. 02 : 155110 OR EQUIVALENT. 01 : 155119 OR EQUIVALENT.

I

~ ~ CI(

=

NO. TERMINALS

1 N.C.

2 AUDIO SIG. INPUT

3 +B (+5V)

.n

F,

~FOUT

L H

4 SYNC + LUM. SIG. INPUT

TOP VIEW 5 COLOR SIG. INPUT

D£TAIL (CH .S'N) 6 COLOR SIG. OUTPUT

7 COMPO. SIG. OUTPUT

8 SYNC + LUM. SIG. OUTPUT

9 RF OUTPUT

10 CHANNEL SELECT SW.

REAR VIEW

RF Modulator Layout and Schematic #251311

12

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