Tektronix 4112 Manual de usuario

. K"

SERVICE MANUAL

· VOLUME 2

•

First Printing SEP

1982

•

4112

Part No.

070

3819-00

Product Group 16

COMPUTER DISPLAY

TERMINAL

Please Check for

CHANGE INFORMATION

the Rear

this Manual

Tektronix·

COMMTTUJ

TUCXCELL£NCC

WARNING

THE FOLLOWING SERVICING INSTRUCTIONS ARE

FOR USE BY QUALIFIED PERSONNEL ONLY. TO

AVOID PERSONAL INJURY, DO

NOT

PERFORM ANY

SERVICING OTHER THAN THAT CONTAINED IN

OPERATING INSTRUCTIONS UNLESS YOU ARE

QUALIFIED

DO SO.

Copy

rig

1982

Tektro

nn<.

Inc.

Bec

.vert

Oregon

nted

the

United

Sta

'Jf Ame

rica

rig

hts

reserved

Con

nts

thi

s pub

tion

may

not

reproduced

any

form w

ith

per

ion

Tektro

inc

is i

nstrumen

who

le or m

part

. m

protected

ori

U.S.

foreign

patents

pate

app

·•

ons

nformat

ion

prov

ded

uest

Tek

tro

nt.<

. I

0 O Bo •

500

Beaverto

Orego

97077

KTRONIX

reg

stered

trademark

Tek

• ''

•

MANUAL REVISION STATUS

•

PROD

411

COM

PUTER

£:>1SPLAY

TERMINAL

This manual supports

the

following versions

this

product

: Serial Numbers

8010100

and

REV DATE DESCRIPTION

sen

1ee2

Original Issue; repl

es 061 ·2487·

•

• 411 2 SERVICE (VOLUME 2)

• CONTENTS

Section

1 INTRODUCTION Page

Using

This

Manual

..............

.. .

....

............

...

1-1

Controls and Connectors Summary

....

...

....

........

1-2

Internal Configuration..

.................

.....

1-3

Accessories

..........

.................

....

...

-5

Standard Accessories

...

...........

............

1-5

tional Accessories

............

...........

... . 1-5

Section

INSTALLATION

Unpacking the Terminal

......

.........................

2-1

Site

lection

........

.....

................

.....

2-2

Installation Procedures

..........................

....

...

2-4

Checking for Correctly Installed Opti

ons

and Proper Operating Voltage

................

....

2-4

Applying Power

..............................

...

2-4

Testingthe Terminal (Self-Test)

....

.......

. . 2-4

• Connecting

a Host Computer

.......................

2-6

Direct Connection

.......................

...

.....

2-6

Telephone Line Connecti

......

....

2-6

Testing Communications

.............................

Repackaging the Terminal

........

...

..........

......

2-8

Section

3 STP.AP INFORMATION

ProcessC1r

Board Straps

..............

.. .

................

3-1

Keyboard Straps

......................................

3-2

RAM/ROM

and

RAM Controller Board Straps

.............

3-2

deo

ControllerBoard Straps

...........................

3-2

tor

Generator Board Straps

........

.................

3-4

Raster Memory Board Straps

...........................

3-4

Dual P

lan

e Raster Memory Board Straps

.................

3-4

External Video Board Straps

............................

3-4

Section 4 ADJUSTMENTS (Short

Form)

...

....

...•

........

. 4-1

•411 2 SERVICE (V

OLUME

iii

S.Ctlon

Section e

S.Ctlon 7

S.Ctlon 8

S.C:Uon9

Appen

dix

Appendix&

TROUBLESHOOTING AND SELF-

TEST

•

Introduction

Self-Test . .

.......................

......

5-1

Parts

Self-

Test

....................................

5-1

Power-Up

.........................................

5-1

Main Self-Test

....................................

-2

Adjustment Rou

...............................

5-2

7x System Errors Dete

ctor

.........................

-2

Control Fl

Self-Test

...................

.........

-2

-Test Firmwa

JumpTables.

.......

....

...

....

5-5

How

Run Self-Test

.............

....

...........

5-5

Self-Test Error Messages

............

..................

5-6

.ors D

ectory

..........................

........

5-6

Non-Option Error Messages

............

.....

.......

5-6

Keyboard Check and Lights

.......

...........

.....

5-7

Processor

Chtkk

...

..............

........

.....

.5-1 o

Communications and Bus Checks

.....

...

.....

MemoryTests

.......................

.....

.......

5-17

lay Bus Checks............ .

..........

...

....

5-23

System Level Errors (7x)

................

...

......

5-25

Option Tests and Error Messages

....

.......

....

-27

3PPI Board Tests

.................................

-2

Option 42 Self-Test Error Messages

.....

.........

Tablet Self-Test

........................

.......

....

Adjustment Sel

Test

........

...

........

................

5-40

The General Menu

.....................

..............

5-40

411 2 Di

lay Adjustment Menu

..........

......

....

5-41

Processor Board Adjustment Menu/Procedure

........

5-41

CMOS-Reset.

.....

...

...........

.................

•

Keyboard

.........

....

................

...

.. .

5-42

Host Port

............

...............

.........

5-42

justment Menu/Procedure

.......

......

5-43

3PPI Ad

stment Menu/Procedure

.........

5-43

Tablet Adjustment Menu/Procedure

.........

.....

....

5-44

ELECTRICALPARTS

LIST

DIAGRAMS

SCHEMATICS

MECHANICALPARTS

LIST

SIGNALS

UST

ASCII

CODE

AND KEYCODE CHARTS

•

41 12 SERVICE (VOLUME 2)

•

ILLUSTRATIONS

Figure

Description

Page

1-1 The

4112

Computer DisplayTerminal

...........

...

1-2

Front and Rear Panel Features

...

..........

. . 1-2

1-3

4112

Internal Layout

....

................

....

1-3

-4

411 2 MotherBoard

........

..........

.....

1-4

2-1

4112

Physical Dimensions

..................

.....

2-3

2-2 SELF TEST and MASTER RESET Buttons

2-3

2-4

3-1

5-1

5-2

5-3

5-4

5-5

5-6

5-7A

5-78

5-7C

5-7D

5-7E

5-7F

5-7G

5-7H

5-71

5-7J

5-7K

4112

SERVICE (VOLUME 2)

and Rear Panel Connectors

........................

2-5

Keyboard Key Codes

....

................

....

. 2-7

Repackaging Diagram

.............................

2-9

Strapping

RAM

Controller Board Base Address .

....

3-3

Self-Test Functional Diagram

...

.......

.........

5-1

Self-Test Program Block Diagram

....

..........

5-3

Pointerand JumpTableDiagram

...................

5-5

RAM/ROM Board

ROM

Locations

................

5-8

Processor Board

ROM

Locations

...............

. 5-12

Status Byte

.........

.......

....................

5-17

Self-Test Flow Chart

....

..................

....

5-45

Self-Test Flow Chart

...

......

...................

5-47

Self-Test FlowChart

...

.....

....

...

.......

5-49

Self-Test FlowChart

.........

..........

...

.......

5-51

Self-Test FlowChart

.....

...........

...

......

5-53

Self-Test Flow Chart

.......

......

....

......

5-55

Self-Test Flow Chart

..............................

5-57

3PPI Self-Test Flow Chart

.............

..........

5-59

Self-Test Flow Chart

..........................

5-61

DiskSelf-Test Flow Chart

...

..............

5-63

TabletSelf-Test Flow Chart

...

............

...

....

5-85

Number

3-1

3-2

3-3

3-4

4-1

5-1

5-2

5-3

5-4

5-5

5-6

5-7

5-a

5-9

-1

5-12

5-1 4

-1

B-

B-2

8-3

B-4

B-5

B-6

B-7

8-8

-9

B-

TABLES

Descr

ption

Page

essor Board Str

Settings.

........

3-1

Keyboard Language Option Straps

..............

...

3-2

Video

ntro

Strap Setti

ngs

......

...........

3-2

External Video Straps . . .

...

................

...

3-4

Display Module Adjustments.. ..

.......

4-1

Power-Up/S_elf-Test Sequen

.....

....

.....

5-4

lf-T

estErrors Directory . ... .

......

.....

..... . .

5-7

Keyboard/Processor Board Errors

.......

....

5-9

Processor Board Err

ors

......

...

....

......

....

. 5-1 0

RAM/Bus and HostPort Errors

.....

...

.....

5-14

e~-

to-Dec

mal

uivalents

....

..........

...

System/Opt

n ROM

Err

ors

....

.....

....

5-18

RAM Test:Errors . ... . . . . . . .. . .. . .. .. . ..

....

.....

5-20

CMOS MemoryEr

rs ..

...

....

5-22

Display Bus/Board and System Errors.

....

5-23

System Level Errors (7x Codes)

....

.......

5-25

3PPI Errors .

....

................

....

...

5-27

Disk Option Errors ......

....

.....

...

........

5-29

Tablet Error Messages .

...

....

...

.......

5-37

Adjustment Control Keys

.....

.. .

.............

5-40

Signal

Lis

.....

....

.....

...

.. ... .

......

A-1

ASCII Code

art

....

...

....

......

B-1

Characters used in <Char> Parameters ....

....

...

8-2

Characters used in < Int> and

<In

> Parameters ..

......

................

B-3

Characters used

<Int-Report>

rameters

....

B-4

Characters used in <

XY>

Parameters

.............

B-5

Characters used

< XV-Report> Parameters..

...

B-6

ited Kingdom Character

Set.

.......

.........

B-7

Swedish CharacterSet ....

...

........

...

B-8

Dan

ish/

Norwegian Character Set .

...

.............

B-9

APL Character Set

.....

...

....

...

......

B-10

•

411 2 SERVICE (VOLUME 2)

•

OPERATORS SAFETY SUMMARY

This general safety information

for both operating and servicing personnel. Specific warnings and cautions will

found throughout the manual where

they

apply.

but

may

not appear in this summary.

TERMS

THIS

MANUAL

CAUTION statements identify conditions

practices

that can result

damage

the

equipment

other

property.

WARNING statements identify conditions

practices

that

can

result in personal

injury

loss

life.

AS MARKED ON EQUIPMENT

CAUTION indicatesa personal injury hazard not imme-

diatelyaccessible asone reads the marking.

hazard to property i

ncluding

the equipment

self.

DANGER indicates a personal injury hazard immediate-

accessible as one reads the marking.

SYMBOLS

IN THIS MANUAL

A Thissymbol indicates where

applicable

caution-

ary or other information

found.

MARKED ON EQUIPMENT

DANGER high voltage.

@ Protective ground (earth) terminal.

ATTENTION-refer

manual.

(D Refer

manual.

POWER SOURCE

This product

designed

operate from a power

source that does not

apply

morethan

250

volts rms

between the supply conductors

between

ei~her

supply

conductorandground.A protective ground

connection by way

thegrounding conductor in the

poworcord is essential for safeoperation.

4112 SERVICE (VOLUME 2)

GROUNDING

THE

PRODUCT

This product

grounded through

the

grounding

conductor

the powercord.

avoid electri

shock

plug

the

powercord

into

a properly wired receptacle

before connecting

the power input or output termi-

nals

.A protective ground connection by way of

the

grounding

condu~tor

the power

cord

essential for

safeoperation.

DANGER ARISING FROM

LOSS

GROUND

Upon loss

the protective-ground connection,all

accessible conductive parts (including knobs and

controls

that

may appearto

insulating) can render

an electric

shock

USE

THE

PROPER POWER CORD

Use

only

the power

cord

and connector specified for

your

product.

Use onlya powercord that

good

cond

ition.

Refer cord and

connector

changes to qualified service

personnel.

OPERATOR'S SAFETY SUMMARY

USETHEPROPERFUS

avoid fire hazard,

use

only the

fuse

spe

cifi

ed in the

parts

list

your

pro.;juct,

and

ich

dent

al in

type, voltage rati

and

rre

rati

Refer fuse replacement

Qua

~ied

service personnel.

DO NOTOPERATE

EXPLOSIVE

ATMOSPHERES

To avoidex

plo

sion.

not

operate

this

product

in an

atmosphere

explos

gases u

ess

has

been

spec

all

certified

such

operation.

vii

DO NOT nEMOVE COVERS OR PANELS

To avoid personal injury,

not remove the product

covers or panels. Do

not

operate

the

product

without

the

covers and panels properly

installed

DO NOT OPERATE PLUG-IN UNIT

WITHOUT COVERS

avoid personal

inju

ry, do

not

op6rate

this

product

thou

covers

or pa

nstalled

. Do not

apply

wer

the

plug-in via a

plug-in

extender

4112 SERVICE (VOLUME

•

SERVICE SAFETY SUMMARY

FOR QUALIFIED SERVICE PERSONNEL ONLY

Refer also to the preceding Operators Safety Summary.

NOT

SERVICE ALONE

not

perform internal service

adjustment of this

product unless another person capable

rendering

first

aid and resusc

ation

present.

USE CARE WHEN SERVICING WITH

POWER

Dangerol!S voltages

may

xist

at several points in this

product.Toavoid personal injury,

not touch exposed

connections and components

while

power

on.

Disconnect power

before

removing the powersupply

shield,soldering,

replacing components.

NOT

WEAR JEWELRY

Remove jewelry

prior

servicing.Rings,necklaces,

and other metallic objects

could

come

into

contact

with

dangerous voltages

and

currents.

4112

SERVICE(VOLUME 2)

X-RADIATION

X-ray emission generated within this instrument has

been sufficiently shielded. Do

not

modify

otherwise

alter

the high voltage

circuitry

the CRT enclosure.

POWER SOURCE

This product

intended

operate from a power

sourcethat will not

apply

than

250

volts rms

between the supply conductors

between either

supply conductor and ground. A protective

ound

connection

way

the grounding conductor in the

power

cord

essential for safe operation.

viii

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