Commodore 1526 Manual de usuario

SERVICE

MANUAL

1526

•

MPS

802

•

4023

PRINTERS

APRIL

1985

PN—31400303

Commodore

Business

Machines,

Inc.

1200

Wilson

Drive,

West

Chester,

Pennsylvania

19380

U.S.A.

Commodore

makes

expressed

or implied

war

ranties

with

regard

the

information

contained

herein.

The

information

made

available

solely on

basis,

and

the

entire

risk

quality

and

accuracy

with

the

user. Commodore

shall

not

liable

for

any

consequential

incidental

damages

connection

with

the

use

the

information

con

tained

herein.

The

listing of

any available

replace

ment

part

herein

does

not

constitute

any

case

recommendation,

warranty

guaranty

quality

suitability

such

replacement

part.

Reproduction

use

without

expressed

permission,

editorial

pictorial

content,

any

matter

prohibited.

This

manual

contains

copyrighted

and

proprietary

information.

part

this

publication

may

reproduced, stored

retrieval

system,

transmitted

any

form

any

means,

electronic,

mechanical,

photocopying,

recording

otherwise,

without the

prior

written

permis

sian

Commodore

Eiectronics

Limited.

1985

Commodore

Electronics

Limited.

All

rights

reserved.

CONTENTS

Title

Page

SPECIFICATIONS

SET

AND

TESTING

RIBBON

CARTRIDGE

PAPER INSTALLATION

SELF

TEST

ACCESSORIES

PARTS

LIST

MAINTENANCE

FUNCTIONAL

BLOCK

DIAGRAM

CIRCUIT

ThEORY

POWER

SUPPLY

RESET

LOGIC

CLOCK

CIRCUIT

MICROPROCESSOR

LOGIC

PAPER

FEED

MOTOR

CARRIAGE

MOTOR

WIRE

DRIVE

WIRE

COIL

PROTECTION

PAPER

CONTROL

LOGIC

CARRIAGE

POSITION

AND

HOME

SENSOR

1526

•

MPS

802

INTERFACE

LOGIC

4023

INTERFACE

LOGIC

TROUBLESHOOTING

GUIDES

PCB

PARTS

LIST

ROMUPCRIDES

1526

•

:i,IPS

802

SCHEMATIC

DEVICE

NUMBER

CHANGE

4023

SCHEMATIC

MECHANiCAL

ADJUSTMENTS

HEAD

SHIFT

LEVER

HEAD

HOME

SENSOR

WIRING

DIAGRAM

MECHANICAL

DISASSEMBLY

ASSEMBLY

NOTES

CASE

WORK’POWER

SUPPLY

MECHANICAL

ASSEMBLIES

SPECIFICATIONS

•

1526

•

MPS

802

•

4023.

METHOD

•

Bi-directional

impact dot

matrix

CHARACTER

MATRIX

•

Dot Matrix

CHARACTERS

•

Upper

lower

case

letters

with

true

descenders.

Numerals

symbols.

All

PET

graphic

characters

GRAPHICS

•

Vertical

dots

—

maximum

640

columns

CHARACTER CODES

•

CBM

ASCII

code

SPEED

•

CPS

MAXIMUM COLUMNS

•

Columns

LINE

FEED

SPACING

•

Lines/inch

character

mode

•

Lines/inch

graphics

mode

LINE

FEED

SPEED

•

Lines/sec

character

mode

•

Lines/sec

graphics

mode

PAPER

FEED

•

feed

PAPER

WIDTH

•

10”

Width

(including

tractor

feed

holes>

•

85”

Width

(after

tractor

holes>

MULTIPLE

COPIES

•

Original

plus

maximum

copies

POWER

REQUIREMENTS

•

120

Volts

AC,

Hz,

1.5

Amp

•

15261MPS

802

••

4023

•

INTERFACE

•

SERIAL

INTERFACE

•

IEEE

Protocol

COMPUTERS

•

VIC2O,

C64,

COMPUTERS

•

4032,

8032,

SX64, C16,

8096,

SP9000,

PLUS

B-MODEL

SET

AND

TESTING

VISUAL

OBSERVATION

particularly

important

before

attempting

repair

printer.

Always

check

for

physical

damage

the

mechanism.

Remove any

loose debris

that

may

have

accumulated

inside

the

unit.

Ribbon

Cartridge

HEADfi

RIBBON

CARTRIDGE

Before

installing

the

ribbon

cartridge, turn

the

printer

off.

carefully

pushing

the

carriage,

position

the

head

the

center

the

unit.

Turn

the

dial

knob

the

cartridge

the

direction

the

arrow

until

the

ribbon

taut.

Insert

the

cartridge

the

hooks

provided

and

push

down.

The

ribbon

must

positioned

between

the

head

and

the

ribbon

guide.

CAUTION!

When installing

removing

the

ribbon

cartridge,

not

touch

the

FPC

cable.

Check

that

the

FPC

cable

remains

the

down

position as

shown.

FPC

CABLE

FPC

SET

AND

TESTING

(Continued)

Paper Installation

install

paper, turn

the

printer

off,

remove

the

paper

rack

and

lift

the soundproof

cover.

Lift

the

paper

hold

down

shaft

and

raise

the

covers

the

left

and

right

tractors

allow

access

the

tractor

pins.

Align

the

paper

perforations

with

the

tractor

pins

and

the

covers,

The

left

tractor

assembly

must

firmly

pressed

against the

left

stopper.

The

right

tractor

assembly

slides

allow

adjustment

for

paper

width.

Once

the paper

aligned

the

tractor,

turn

the

manual

feed

knob

while

guiding

the

paper

its

posi

tion

behind

the

platen

(See

the

paper

path

figure

below).

Standard

paper

may

used

simply

stalling

front

the

tractor

and

behind

the

platen,

using

the

manual

feed

knob

friction

feed

the

paper.

TRACTOR

PLATEN

TRACTOR.

PAPER

HOLD-DOWN

SHAFT

PAPER

SET

AND

TESTING

(Continued)

Self

Test

This

unit

has

pre-programmed

self-checking capability.

The

program

may be

used

test

the

head

operation,

quality and

printer

mechanism

(ribbon

feed

function,

linefeed,

etc).

The

self-test

function

initiated

pressing

the

paper

advance

switch

while

turning

the

power

supply

switch.

NOTE:

not

operate

the

self-test

function

the

no-paper

condition.

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SAMPLE

SELF

TEST

PRINT-OUT

Additional

Testing

sample

program

should

run

test

for

proper

interface operation.

normally

recommended

that

the

“customer

complaint”

checked

verifying

printer

operation

during

print-out

from

appropriate

program.

ACCESSORIES

PARTS

LIST

314597-01

314598-01

314598-02

314598-03

314599-01

1515001-01

903508-04

1526/802/4023

1526

MPS8O2

4023

1526/802/4023

526/MPS8O2

1526/802/4023

PAPER

RACK

USER’S

MANUAL

USER’S

MANUAL

USER’S

MANUAL

RIBBON

6PIN

DiN

CABLE

POWER

CORD

Cleaning

MAINTENANCE

CAUTION

not

use

chemicals

clean

any

the

printer

parts.

Using

clean,

dry

brush,

remove

dust

and

debris

from

the

ribbon

guide,

head,

platen area

and

tractors

often.

Periodically

remove

the

top

case

and

brush

any

accumulated

dust

particles

from

the

unit.

Lubrication

Oil

the

carriage

pillars,

indicated,

every

500,000

lines

once

year.

Use

dry

guaze

clean

the

pillars

before

oiling.

Oil

sparingly

and

remove

any

excess,

Use

light

oil

that

will

not

attract

and

hold

dust

and

dirt

clean,

light

grease

used

protect

the

meshing

parts

the

plastic

gears.

Also,

the

springs

the

unit

may require

lubrication.

They

can

found

behind

the

paper

guide,

the

roller

unit

(2>,

and

the

paper

holder

(2).

See

disassembly

numbers

and

for

identification.

sure

use

lubricants

sparingly.

CAUTION

not

allow

oil

grease

contact

the

motors,

sensors, tractors,

platen,

ribbon

head.

LUB

Functional

Block

Diagram

Data

Flow

Theory

The

1526,

MPS

802

and

4023

printers

are

functionally

the

same,

with

the

exception

the

interface

circuits.

The

1526

and

MPS

802

printers have

serial

interface,

and

the

4023

printer

has

IEEE

interface.

The

data

flow

the

same

for

all

the

printers.

The

Interface

The

1526

and

MPS

802

SerIal

Interface

Serial

data

received

rate

determined

the

clock input. The

serial

data

signal

inverted,

then

input

the

U4D.

U4D

converts

serial

data

parallel

data.

The

4023

IEEE

Interface

Parallel

data

(DIOl

-D108)

received

the

Port

inputs

U4D

(PBO-PB7).

U4D

acts

buffer,

allowing

synchronization

between

the

processor

read

operation

and

the

receive

data

rate.

Handshake

signals

ATN

(Attention),

RFD

(Ready

for

Data),

and

DAC

(Data

Accepted)

provide

synchronization

tween the

transmitting

device

and

the

printer.

Proceseor

Logic

Printer

Data

Flow

Parallel

data

from

the

interface

present

the

data

bus

times

selected

the

operating

system

program.

The

operating

system

(program

ROM)

monitors

the

data

being

received

from

the

inter

face.

Receive

data

can

be printable

characters

control

codes.

Printable

characters

are

stored

RAM.

256

bytes

RAM

are

available

for

character

storage.

128

bytes

RAM

are

U4D,

and

128

bytes

U5D.

This

RAM

called

the

TEMPORARY

LINE

BUFFER.

Control

codes

are

interpreted

special

function

commands

and

are

executed

at the

time

they

are

received.

The

number

lines

per

inch

and

the

characters

per

inch

are

examples

special

function

commands.

Printable

characters

are

stored

the

LINE

BUFFER.

When

the

carriage

return

character

received,

all

the

characters

stored

the

LINE

BUFFER

are

converted

DOT

MATRIX

codes

the

operating

system.

The

DOT

MATRIX

codes

are

stored

ROM

with

the

operating

system.

The

DOT

MATRIX

data

written

into

port

U5D.

The

driver

circuits

activate

the

proper

wires

form

the

characters,

one

column

time.

As a

character

being

printed,

the

head

(carriage)

stepper

motor

moves one

dot

column

position

time.

position

sensor outputs

pulses

that

are

used

indicate

head

position any

time

not

home

(far

left).

The

paper

stepper

motor

moves paper

one

line

time

when

carriage

return

sensed.

The

operating

system

program

monitors

the

position

sen

sor

output,

and

generates

the

signals

that

are

passed

U6D

port

controlling

the

motors.

—

———

——————1

I/o

A61

INDICATOR

U4D

6532

128

DATA

BUS

SERIAL

1526

INTERFACE

DATA

RS (RAM

SELECT)

FUNCTIONAL

BLOCK

DIAGRAM

(SELECT

I/O

I/o

MICRO

PROCESSOR

(SELECT

I/O

(SELECT

I/O

ROM

(SELECT

ROM)

INVERTERS

PAPER

FEED

SWITCH

AO-A6

PAPER OU1

HOME

POSITION

DET

HEAD

POSITION

DET

DATA

BUS

DEVICE

ADDRESS

SELECTION

DATA

BUS

4023

IEEE

INTERFACE

I/O

A121

AO-A6

DIO1

DIO8

DAC

RFD

ED!

ATN

—

-—-,

The

Power

Supply

CIRCUIT

THEORY

The

Power

Supply

generates

two

outputs,

+5VDC

and

+26VDC.

Both

outputs

are

regulated.

The

5VDC

output

supplies

the

microprocessor

and

TTL

circuits,

The

26VDC

output

supplies

the

wire

coils

and

the

paper

feed

and

carriage motor

drive

circuits.

+5VDC

Supply

VR1

series

regulator.

The

series

regulator

keeps

the

output

voltage

constant

when

the

load

varies.

Capacitive

filtering

eliminates

most

the

ripple

voltage

the output.

CR26

full

wave

bridge

rectifier

which

converts the

voltage

generated

from

the

top

secondary

winding

the power

transformer

voltage.

+26VDC

Supply

shunt

type

regulator

circuit

generates

the

constant

VDC

output.

UNREG

+26

VDC REGULATOR

CIRCUIT

The

output

voltage

regulated

26,3VDC

because

the

base

emitter voltage

opposes

the

voltage developed

across

CR23.

Most

the

load

current

passes

through

the

power

transistor

Q23.

CR27

full

wave

bridge

rectifier

which

converts

the

voltage

output

from

the

bottom

secon

dary

winding

the

power

transformer

voltage.

filters

the

rectified

output

voltage.

‘LOAD

Q23

VOUT

VF3

VCR23

263V

—7V

+27V

Otros manuales para 1526

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