Commodore Plus 4 Manual de usuario

SERVICE MANUAL

MODEL PLUS 4 COMPUTER

OCT. 1984 PN-314001-04

Commodore Business Machines, Inc.

1200 Wilson Drive, West Chester, Pennsylvania19380 U.S.A.

Commodore makes noexpressed or implied war-

ranties with regardtothe information contained

herein. The information ismadeavailable solely on

an as is basis, and the entire risk asto quality and

accuracy iswith the user. Commodore shall not be

liable for any consequential or incidental damages

in connection with the useof the information con-

tained herein. The listing of any available replace-

ment part herein does not constitute inany case

arecommendation, warranty or guaranty as to

quality or suitability of such replacement part.

Reproduction or usewithout expressed permission,

of editorial or pictorial content, inany matter is

prohibited.

This manual contains copyrighted and proprietary information. No part

of this publication may bereproduced, stored in a retrieval system, or

transmitted in any form or by any means, electronic, mechanical,

photocopying, recording orotherwise, without the priorwritten permis-

sion of Commodore Electronics Limited.

CONTENTS

RF MODULATOR 251844 LAYOUT ..

251844 SCHEMATIC •••••••••••••••••••••••••••••••••••••••••••••••••••••• ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

Page

Title

SPECIFICA TIONS ••••••••••••••••••••••••••••••••••••••••••••••••••••

•••••••••••••• •••• •••••••••••• •• •••••••••••••••••••••••••• •• •••••••••••••••••• •••• •••••••••• •• •• •••••••••••••••••••••••••• ••••••••••••••••••••••

OVERVIEW ..•••••• •••••••••••••••••••••••••••••••••••••••••••••••••• •••••••••••••••••••••• ••••••••••••••••••••••••••

PRODUCT PARTS LIST ..

CASEWORK IDENTIFICATION •••••••••••••••••••••••••••••••• •• •••••••••••••••• •••••••••••••••••••••••••••••••• •• •• •• •• •• •• •• •• •••• •• ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

PCB LAYOUT ..

PCB PARTS LIST •••••••••••••••••••••••••••••••••••••• •• •• •••••••••••• •••••••••••••••••• •• ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

•••••• •• •• •••••• ••••••••••••••••••••••••••••••••••••••••••••••••

PCB SCHEMATIC DIAGRAMS •••••••••• •••••••••• •• •• •••••••••••••••• •••••••••• •••• •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ••••••••

•• •••••••••••••••••• •••••• ••

KEYBOARD MATRIX ..

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

RF MODULATOR 251311 LAYOUT ..

251311 SCHEMATIC ..

iii/iv

PLUS 4 PRODUCT SPECIFICATION

MEMORY

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

ROM

32K ROM Standard (includes operating system andBASIC interpreter) with 32K additional ROM con-

taining the built-in productivity software.

MICROPROCESSOR

7501 Microprocessor -- .89 or 1.76 MHz clock.

DISPLAY

40 Columns x25 linesof text.

COLORS

128 Colors (16 colors; 8luminance levels).

CHARACTERS

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

characters.

DISPLAY MODES

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

RESOLUTION

320 x200 Pixels

SOUND

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

VOLUME

8Volume levels

KEYBOARD

Full size typewriter style design

KEYS

67 Keys total. 4Cursor control keys. 4Programmed (reprogrammable) function keys (upto 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. 2Joystick ports.

C1531 Cassette drive interface port. RF Output-channel 33 or 4. Video output-composite/

chrominance/luminance. Audio input/output. Power supply input.

PLUS4 PRODUCT SPECIFICATION (Continued)

FEATURES

Built-in extended BASIC 3.5 -- over 75 commands. Built-in Machine Language monitor -- over 12

commar.ds. Built-in graphics andsound 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 isbased on the 7501 microprocessor, anHMOS version of the 6510. Video pro-

cessing is achieved bythe 7360 TED chip. 64K bytes of dynamic RAM areaccomplished by 8 (64K

x 1) I.C.'s. (See page ).The system program iscontained in2 (16K x 8) ROMs. The system supports

up to 128K x 8 of ROMbanked in16K sections. By software control, through the 7360, ROM can

be completely banked out and RAM banked infor atrue 64K of RAM (minus 256 bytepages), allow-

ing 60,671 bytes available for BASIC.

Keyboard and joystick scanning are accomplished by outputting the row data onthe data buswhile

addressing aparticular register inthe TED chip. This will inturn cause the TED chip to latch the column

information.

Astandard serial port supports serial bus peripherals such asthe 1541 disk drive andthe various

serial printers. Acassette port isprovided andthe expansion port supports ROM cartrdiges. TTL serial

ASCII is intended to drive anRS-232 adapter.

PARTS LIST

PLUS/4

TOP CASE ASSY

Top Case

Keyboard, 67 Key, KKR-I

Nameplate

Shield Clip, RR

Shield Clip, FF

C251453-01

CC251501-01

C251655-01

C251855-01

C251856-01

BOTTOM CASE ASSY

Bottom Case

Foot, Self-Adhesive

Paper Shield

Shield Chip

Shield Plate

Insulation Sheet

C251454-01

C950157-04

C310156-01

C310199-01

C310197-01

C310198-01

ACCESSORIES

Users Manual

Power Supply

RF Cable

Switch Box

C310196-01

C310157

C326189-02

C904778-01

C- Commodore Stock Part

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PARTS LIST- PLUS/4 PCBASSEMBLY #310163-01

PLEASE NOTE: Commodore part numbers are provided for reference only and donot indicate the

availability of parts from Commodore. Industry standard parts(Resistors, Capacitors,

Connectors) should besecured locally. Approved cross-references for TTL chips,

Transistors, etc. will beavailable in manual form through theService Department

in November of 1984. Unique ornon-standard parts will bestocked by Commodore

and are indicated onthe parts list by a"C".

DIODES (Continued)

INTEGRATED CIRCUITS

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

CR1

(cont.)

CR2

CR11-20

7360 VLSI, Text Dislay (TED)

Sub: C251535-01

8360 C251535-02

7501 Custom Microprocessor

C251536-01

6551 A (Synertek) 901895-02

74LS08 901521-03

6529B Single Port Interface

C251640-03

901521-02

901522-06

901523-01

901521-57

901505-01

C251641-02

901521-18

901521-34

901521-22

U5 RESISTORS- All values are inohms-1/4 WW

5% unless noted otherwise.

74LS04

7406

555

74LS257

4164-2 D-RAM

7700-01 0PLA

74LS139

74LS175

74LS27

2312B ROMTED Basic

U9-10

U11-18

U19

U20

U21

U22

U23

240

250

lOOK

1.5K

47K

lOOK

R14

R15

R16

R17

R18

R19

R20

R21

R22

R23

R24

R25

4.7K

10K

470K

220K

18K

1.5K

470K

lOOK

12K

10K

Rl0

R11

R12

R13

C318006-01

23128 ROMTED Kernal C 318005-04

23128 FUNCTION ROM, 3+ 1 LOW

C317053-01

23128 FUNCTION ROM, 3+HIGH

C317054-01

6529B Single Port Interface

C251640-03

U24

U25

U26 RESISTOR PACK

U27 3.3K, 6PIN 902441-29

68, 8 PIN 4 ISOLATED 326149-06

RP1, 22

RP3,4

TRANSISTORS CAPACITORS

01-03 II2SC 1815 902693-01 C1 Elect 0.1 µ,F 25V 900100-40

04 II2SD 880 902694-01 Sub: C2 Ceramic 0.1 µ,F 25V 251075-06

Tip 29A 902653-01 Sub: C3 Film 0.22 µ,F 100V 900150-11

2SD 1266 902694-04 C4 Film 0.22 µ,F 100V 900150-11

C5-C6 Ceramic 0.22 µ,F 50V 900022-01

DIODES IIIIC7 Elect 2200 µ,F 16V 900101-33

C8 Elect 10 µ,F16V 900100-25

CR1 IIBridge Rectifiers S2VB 10 Sindengen C9 Ceramic 0.1 µ,F 25V 251075-06

215026-01 Sub: C10 Trimmer 40 pF !! 251029-02

Bridge Recitifers DBA20B Sanyo Cll Ceramic 22 pF50V 251070-14

251026-02 Sub:

PARTS LIST- PLUS/4

PCB ASSEMBLY #310163-01 (Continued)

CAPACITORS (Continued) MISCELLANEOUS (Continued)

C12

C13

C14

C15-C16

C17-C18

C19

C20

C21

C22

C23

C24-C26

C27

C28-C29

C30

C31-C32

C33-C40

C41-C51

C100

Ceramic 220 pF50V

251071-26 Sub:

220 pF 50V

150 pF 50V

Ceramic

Sub:

Ceramic

Elect

Ceramic

Elect

Ceramic

Elect

Ceramic

Elect

Ceramic

Sub:

Ceramic

Sub:

Ceramic 0.1

150 pF 50V

0.1 µF25V

0.1 µF 25V

10 µF 16V

0.01 µF 25V

10 µF 16V

0.1 µF 25V

10 µF 16V

1µF 16V

0.1 µF 25V

10 µF 16V

0.1 µF 25V

10 µF 16V

0.1 µF 25V

0.22 µF 25V

0.22 µF 50V

0.1 µF 50V

µF 50V

MISCELLANEOUS

SW1

SW2

Sub:

900463-08

251071-24

900462-41

251075-01

251075-06

900100-25

251075-01

900100-25

251075-06

900100-25

900100-16

251075-06

900100-25

251075-06

900100-25

251075-06

251075-07

900022-01

900020-06

9000010-01

900010-20

Crystal 14.31818 MHZ 251081-01

Sub:

Crystal 14.31818 MHZ 251081-02

Crystal 1.8432 MHZ 900555-02

Switch, Rocker C251587-01

(PC Mount)

Switch, Push Button C251260-01

RF Modulator C251844-01

Sub:

RF Modulator 251311-01

FB2-14

FB15-21

FB22-26,

FB28-38,

FB40

FB41-58

FB59

FB60

FB61-63

FB64-65

EM1,2

CN1

CN2

CN3

CN4

CN5-6

CN7

CN8

L3,L3

Ferrite bead

Ferrite bead 325563-01

903025-01

Ferrite bead 325563-01

Ferrite bead

903025-01

325563-01

903025-01

325563-01

903025-01

EMI Filter 251842-01

Connector 4 PIN (power supply)

C251614-01

Connector 6 PINDIN (serial bus)

C903361-01

Connector 7 PIN MINI DIN (cassette)

C251616-01

Connector 50 PINFemale Edge

(exoab) C251630-01

Connector 8 PIN MINI DIN

(joy1 & 2) C251259-01

Connector 8 PINDIN (audio/video)

325573-01

Connector 18 PIN(keyboard)

C251841-01

Noise Filter

Line Filter

Sub:

Coil Inductor 1.2 uHpt

Sub:

251264-01

906127-01

251701-01

901152-01

325570-01

Fuse 250V 1.5A

Fuse Clip

Cartridge Guide

Shield Box

Shield Cap

903556-18

906102-01

310171-01

C310172-01

C310173-01

C- Commodore Stock Part

RUN

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¢¢

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f1 11

f2 f3

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\..4 vv

33 I<J

-- 11 40

-- 22 39

---- 33 38

-- 44 37

-- 55 36 --

~~ 66 35 --

-- 77 34

'- 88 33 --

i- 99 32 --

.- 10 31 --

7501

1- 11 30 --

,- 12 29 --

-- 13 28 --

-- 14 27 --

-- 15 26 --

no. 16 25 --

-- 17 24 --

-- 18 23 --

-- 19 22 --

,- 20 21 --

cj>OIN

RDY

IRQ

AEC

VCC

A11

A12

A13

GND

KEYBOARD MATRIX

RES

R/W

GATE IN

A15

A14

VDD

CS0

CS1

R/W

IRQ

MUX

RAS

CAS

cj>0

COLOR

CLK IN

SYNC

VSS

PIN ASSIGNMENT

U2-251536-01

CUSTOM MICROPROCESSOR

HELP

-- 11 48

-- 22 47

-- 33 46

-- 44 45

-- 55 44

-- 66 43

-- 77 42

-- 88 41

-- 99 40

-- 10 39

-- 11 7360 38

12 37

-- 13 36

-- 14 35

-- 15 34

-- 16 33

-- 17 32

-- 18 31

-- 19 30

-- 20 29

-- 21 28

-- 22 27

-- 23 26

-- 24 25

-A3

-A4

-A5

-A6

-A7

-A8

-A9

-A10

-A11

-A12

-A13

-A14

-A15

-AEC

-BA

-SND

-D7

-D6

-D5

-D4

-D3

-D2

-D1

-D0

PIN ASSIGNMENT

U1-251535-01

VLSI, TEXT DISPLAY

(TED)

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