Ibm 5280 User manual

==-=

= SY31-0623-2

- -

---

-

----

-

~

-~-

- -----

---~-

----

_.-

IBM

5280

Distributed

Data

System

IBM 5285 Programmable Data Station

MaintenanceAnalysis Procedures

',Preface

These

Maintenanc~

Analysis Procedures (MAPs) are

to

be

us~dJor

servici~g

the IBM, 5285 Programmable Data

Station. Customer engineers using these

MAPs

are

a.ssumed

to

have completed the course on

the

IBM

5280 Distributed Data System.

It

is suggested

that

you start,your call

with

the System

Entry MAP, which leads

to

a'repair action.

Definition

of

terms and abbreviations that are

not

common,

but

are used in the MAPs, are in the Glossary

of

Terms and Abbreviations section

of

the IBM

5285

Programmable Data Station Maintenance Information

Manual, SY31

-0600.

There are several DANGER and CAUTION notices in the

manual. You can use the blank lines below each notice

to

translate

it

into your

own

words. The locations

of

these notices are listed in

the

safety section.

Third

Edition

(December 1980)

Related information can be found in the

following

manuals:

• IBM

5280

Operator's Guide,

GA21-9364

• IBM

5285

Programmable Data Station Maintenance

Information Manual,

SY31-0600

• IBM

5280

Diskette Drive Maintenance Information

Manual, SY31

-0602

• IBM

5280

Message Manual,

GA21-9354

This

is

a major revision of, and makes obsolete, SY31-0623-1. Because

the

changes

and

additions

are extensive,

this

publication should be reviewed in its

entirety.

Changes

are

periodically made

to

the

information

herein; these changes will be

reported

in

technical

newsletters

or

in

new

editions

of

this publication.

Use this publication

only

for

the

purpose

stated

in

the

Preface.

It

is

possible

that

this

material might

contain

reference

to,

or

information

about,

IBM

products

(machines and programs), programming,

or

services

that

are

not

announced

in

your

country.

Such references

or

information

must

not

be

construed

to

mean

that

I

BM

intends

to

announce

such I

BM

products,

programming,

or

services

in

your

country.

This publication

could

contain

technical inaccuracies

or

typographical errors. Address

your

comments

about

this

publication

to

I

BM

Corporation,

Information Design and Development,

Department

997,

11400

Burnet

Road,

Austin, Texas

78758.

IBM

may

use

and

distribute

any

of

the

information

you

supply

in

any

way

it believes

appropriate

without

incurring

any

obligation whatever. You may,

of

course,

continue

to

use

the

information

you

supply.

Corporation

1980

Contents

BASE MAP SUMMARY

CHART

. . . . . • • . . . . . . •

..

v

SAFETY

..........

_

..••...•.•.•..•.••...

vii

Danger

and

Caution Notices

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

vii

CE

Safety Practices

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

viii

MAP INTRODUCTION _

.......

_

...

_

....•.•..

ix

MAP Arrangement. . . . . . . . . . . . . . . . . . . . . . . . ix

MAP Flow

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

,

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

x

MAP

Example

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

xi

How

to

Use

the

MAPs

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

xiii

Probing Information When Using MAPs

.........

xiii

Normal Conditions

After

Power

On

...........

xiii

System Entry

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

0100·1

Data Entry Entry

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

1000-1

Diskette Entry

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

2000·1

Disk Interchange

Entry

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

2500·1

Communication Entry

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

3000·1

Printer Entry

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

7000·1

Power Entry

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

8000·1

iii

This page

is

intentionally

left blank.

iv

IBM

5285

BASE

MAP

SUf'1MARY

CHAR

T

PAGE

1

OF

2

NUMBERIMDIIMAPIEXER-I

CIZER

MAP

0001-1

NAME

I

EC

NUMBER

------+---+---+-----+-------------------------------------+---------

0001

0002

0100

0200

0210

0220

0300

0500

0501

0510

0511

0520

0530

0531

0532

0600

0800

1000

1001

1010

1011

1020

1021

1025

1026

1030

1040

1060

1070

x

X

SUMf'1ARY

CHART

DESCRIPTIONS

SYSTEt-1

ENTRY

POWER

ON

CHECKOUT

POWER

ON

RESET

CONDITION

CODE

ERROR

CODES

BASE

ENTRY

BASE

AREA

MENU

MAIN

MPU

TEST

MAIN

MPU

ATTENTION

ERROR

MAIN

STORAGE

A

TEST

(AUTOMATIC)

MAIN

STORAGE

B

TEST

(MANUAL)

MAIN

STORAGE

ACCESS

ERROR

MAIN

STORAGE

PARITY

CHECK

ERROR

ROS

PATCH

CARD

INTERMITTENT

ERROR

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

DATA

ENTRY

AREA

MENU

A-Al DISPLAY

A-El

DISPLAY

A-AI

KEYBOARD

A-El

KEYBOARD

ERROR

CODE

KEYLOCK

MAGNETIC

STRIPE

READER

ELAPSED

TIME

COUNTER

DATA

ENTRY

KEYBOARD/DISPLAY

STORAGE

DATA

ENTRY

KEYBOARD

ADAPTER

TEST

D.

E.

KEYBOARD

SCAN

CODE

TEST

D.

E.

MAGNETIC·

STRIPE

READER

TEST

D.

E.

ELAPSED

TIME

COUNTER

TEST

D.

E.

DISPLAY EXERCISER

TEST

Copyright

IBM

Corp

1980

EC840874

840874

PEC839787

MAP

0001-1

Summary

Chart

v

vi

BASE

MAP

0001-2

S

Ul'it-1AR

Y

CH

AR

T

PAGE

2

OF

2

NUMBER!MDI!MAP!EXER-!

CIZER

NAME

!

EC

NUMBER

------+---+---+-----+-------------------------------------+---------

2000

X DISKETTE

DRIVE

ENTRY

840874

2001

X DISKETTE

AREA

MENU

840874

2010

2050

2060

..,.." n

,,-

•

.LV

2250

2260

2270

2280

2510

3000

3001

3010

3011

3012

3013

3014

3015

3016

3017

3018

3019

7000

7001

7010

8000

8030

9001

X

x

X

V

A

x

X

DISKETTE

BASE

SWAP

MAP

SUPPORT

EXERCISER

DRIVE

FUNCTIONAL

CHECK

2 DRIVE,

N/DDCC

2 DRIVE,

DDCC

MINIMUM

CONFIGURATION

SYSTEM

INTERFACE/

LED

DISKETTE

HEAD

ALIGNMENT

TEST

DISKETTE

MEDIA

ANALYZE

(TMEDIA)

COMMUNICATION

ENTRY

COMMUNICATIONS

AREA

MENU

COMMUNICATION

SET

UP

TRANSMIT/RECEIVE

LEVEL

CHECK

CBS

TYPE

COUPLER

TEST

CDT

TYPE

COUPLER

TEST

DIGITAL

NETWORK

WITH

DDSA

OTHER

COMMUNICATIONS

ERRORS

W.T. LINE

PLATE

AUTO

ANS

W.T.

LINE

PLATE

MANUAL

CALL

W.T. LINE

PLATE

MANUAL

ANSWER

EIA OPEN/SHORT

TEST

PRINTER

ENTRY

PRINTER

AREA

MENU

PRINTER

ADAPTER

TEST

VERIFICATION

TEST

POWER

ENTRY

D.

C. DISTRIBUTION

t'lAIN

OPTION

MENU

EC840874

840874

840374

840874

840374

840874

840374

840874

839661

840874

839661

840874

840374

840874

840374

PEC839787

MAP

0001-2

DANGER

AND

CAUTION

NOTICES

Throughout

this

manual,

the

word

DANGER is used

to

inform

the

CE

of

an action

that

could cause a personal

injury. The

word

CAUTION is used

to

inform

the

CE

of

an action

that

could damage

the

machine,

or

affect

the

running

of

a customer program.

If

desired, translate these notices and

write

your

own

words

on the blank lines provided on these pages.

Ensure

that

you

understand and observe the safety

precautions printed on

the

CE

Safety Practices card

that

is used in the country

where

you work. A

copy

of

the

card

that

is used by customer engineers

who

work

in

the United States follows.

Safety

vii

CE

SAFETY PRACTICES

All

Customer Engineers are expected

to

take every

safety

precaution possible and observe the

following

safety

practices

while

maintaining

IBM

equipment:

1. You should

not

work

alone under hazardous

conditions

or

around

equipment

with

dangerous voltage.

Always

advise

your

manager

if

you

MUST

work

alone.

2. Remove all power, ac and dc,

when

removing

or

assembling

major

components,

working

in immediate

areas

of

power

supplies, performing mechanical

inspection

of

power

supplies,

or

installing changes in

machine circuitry.

3.

After

turning

off

wall

box

power

switch,

lock

it

in

the

Off

position

or

tag

it

with

a

"00

Not

Operate"

tag,

Form 229-1266. Pull

power

supply

cord whenever

possible.

4.

VVhsn

it

is absolutely neCessary

to

work

on

equipment

having exposed operating mechanical parts

or

exposed

live electrical

circuitry

anywhere in the machine, observe

the

following

precautions:

a.

Another

person familiar

with

power

off

controls

must

be in immediate vicinity.

b. Do

not

wear

rings,

wrist

watches, chains, bracelets,

or

metal

cuff

links.

c. Use

only

insulated pliers and screwdrivers.

d. Keep one hand in pocket.

e.

When

using

test

instruments, be certain

that

controls

are set correctly and

that

insulated probes

of

proper

capacity are used.

f.

Avoid

contacting

ground

potential (metal

floor

strips,

machine frames, etc.). Use suitable rubber mats,

purchased locally

if

necessary.

5.

Wear

safety glasses

when:

a.

Using a

hammer

to

drive pins, riveting, staking, etc.

b. Power

or

hand drilling, reaming, grinding, etc.

c.

Using spring hooks, attaching springs.

d. Soldering,

wire

cutting,

removing steel bands.

e.

Cleaning parts

with

solvents, sprays, cleaners,

chemicals, etc.

f. Performing any

other

work

that

may be hazardous

to

your

eyes. REMEMBER-THEY ARE YOUR EYES.

6. Follow special

safety

instructions when performing

specialized tasks, such as handling cathode ray

tubes

and extremely high voltages. These instructions are

outlined in CEMs and

the

safety portion

of

the

maintenance manuals.

7. Do

not

use solvents, chemicals, greases,

or

oils

that

have

not

been approved by

IBM.

8.

Avoid

using

tools

or

test

equipment

that

have

not

been

approved

by

IBM.

9. Replace

worn

or

broken

tools

and test equipment.

10.

Lift

by

standing

or

pushing

up

with

stronger leg

muscles-this

takes strain

off

back muscles. Do

not

lift

any

equipment

or

parts

weighing

over

60

pounds.

11.

After

maintenance, restore all

safety

devices, such as

guards, shields, signs,

and

grounding wires.

12. Each Customer Engineer is responsible

to

be certain

that

no

action on his

part

renders products unsafe

or

exposes

customer

personnel

to

hazards.

13. Place removed machine covers in a safe

out-of-the-way

place

where

no

one can

trip

over them.

14. Ensure

that

all machine covers are in place before

returning machine

to

customer.

viii

15.

Always

place

CE

tool

kit

away

from

walk

areas

where

no

one can

trip

over

it;

for

example, under desk

or

table.

16.

Avoid

touching

moving

mechanical parts

when

lubricating, checking

for

play, etc.

17.

When

using stroboscope,

do

not

touch

ANYTHING-it

may be moving.

18.

Avoid

wearing loose

clothing

that

may be

caught

in

machinery.

Shirt

sleeves

must

be

left

buttoned

or

rolled

above

the

elbow.

19. Ties

must

be tucked in

shirt

or

have a

tie

clasp

(preferably nonconductive) approximately 3 inches

from

end. Tie chains are

not

recommended.

20. Before starting equipment, make certain

fellow

CEs and

customer personnel are

not

in a hazardous position.

21. Maintain good housekeeping in area

of

machine

while

performing and

after

completing maintenance.

Knc\,vin; safety

iuI6S

is

not enough.

An

unsafe

act

will

inevitably

lead

to

an

accident.

Use

good

judgment-eliminate

unsafe

acts.

ARTIFICIAL RESPIRATION

General

Considerations

1. Start

Immediately-Seconds

Count

Do

not

move

victim

unless absolutely necessary

to

remove

from

danger. Do

not

wait

or

look

for

help

or

stop

to

loosen clothing,

warm

the victim,

or

apply

stimulants.

2. Check

Mouth

for

Obstructions

Remove foreign objects. Pull tongue

forward.

3. Loosen

Clothing-Keep

Victim

Warm

Take care

of

these items after victim is breathing

by

himself

or

when

help is available.

4. Remain in Position

After

victim revives, be ready

to

resume respiration

if

necessary.

5. Call a

Doctor

Have someone

summon

medical aid.

6.

Don't

Give

Up

Continue

without

interruption until victim is breathing

without

help

or

is certainly dead.

Rescue

Breathing

for

Adults

1.

Place victim on his back immediately.

2. Clear

throat

of

water,

food,

or

foreign matter.

3.

Tilt

head back

to

open

air

passage.

4.

Lift

jaw

up

to

keep

tongue

out

of

air passage.

5. Pinch nostrils

to

prevent

air

leakage

when

you

blow.

6.

Blow

until you see chest rise.

7.

Remove

your

lips and

allow

lungs

to

empty.

8. Listen

for

snoring and

gurglings-signs

of

throat

obstruction.

9. Repeat

mouth

to

mouth

breathing 10-20 times a minute.

Continue rescue breathing until victim breathes

for

himself.

Thumb

and

finger

positions Final

mouth-to-

mouth

position

The

following

items

are covered

in

the

MAP

introduction:

•

MAP

arrangement

•

MAP

flow

•

MAP

example

•

How

to

use

the

MAPs

• Probing information

when

using

the

MAPs

• Normal conditions

after

power

on

MAP

Arrangement

MAPs

contain procedures

that

let you

follow

symptoms,

one step at a time, until you

find

the cause

of

the

failure. Each

MAP

contains

the

following

information:

• The purpose

• A list

of

conditions

•

Step-by-step

procedures

to

follow

When

problems occur

on

the

IBM

5280 Distributed Data

System, use

the

System Entry MAPs. The system entry

MAPs

contain general questions

that

send

you

to

one

of

the

following

MAPs:

• A

power

on checkout

• An

intermittent

failure

•

An

error code

• An operational

symptom

•

An

area

entry

The

power

on checkout

MAP

contains specific questions

that

enable

you

to

isolate any hardware functions

or

microcode

test

problems

that

occur during a check

of

the

basic system. You may be directed

to

a unit

MAP

to

determine

the

failing FRU (field replaceable unit).

Map

Introduction

The

intermittent

failure

MAP

contains charts

for

operational

symptom

failures

or

error codes and a list

of

probable FRUs

that

could cause

the

failure.

The error code

MAP

contains specific questions

that

enable you

to

isolate hardware

functions

or

microcode

tests and

direct

you

to

another

MAP

or

a failing FRU.

The operational

symptom

MAP

contains

symptom

tables

that

will direct you

to

another

MAP

or

a failing FRU.

The area entry

MAP

contains specific questions

that

send you

to

one

of

the

following:

• A

stand-alone

program

• A

MDI

test

• A unit

MAP

The

stand-alone

programs are tests used

for

diagnosis.

After

a repair action has been completed the

stand':alone programs are used

to

verify

the

operation.

The MOl tests are diagnostic routines

that

prompt

you

through a diagnostic procedure

to

aid you in

finding

system failures and

to

isolate failing FRUs.

The unit

MAPs

contain detailed questions that enable

you

to

identify

the

failing FRU.

MAP

Introduction

ix

MAP

Flow

The

following

chart

shows

the

normal path

to

follow

to

isolate a failure:

System

Entry

MAP

r ,

Error Power

On

Area

Code Checkout

Entry

MAP MAP MAPs

I

~

Stand-alone

Unit

Programs MAPs

x

, ,

Intermittent

Operational

Failure

Symptom

MAP

MDI

Tests

MAP

Example

0,------------------

.........

MAP

0100-1

PAGE 1 OF 3

ENTRY

POINTS

4",-------------------------

G~EXIT

POINTS

FROM

ENTER

THIS

MAP

NUMBER

ENTRY

POINT

PAGE

NUMBER

STEP

NUMBER

No

entries

in

this

table

001~

..

~-------------------------------------~

(Entry

Point

A)

-Power

On

Checkout starts when the 'Power' switch is

set

to

the

On

position

(MIM

931).

-The keyboard speaker(s) should buzz near the start and

again at the end

of

Power

On

Checkout.

- A buzz

is

a series

of

clicks

(1

to

2 seconds).

-

If

the second buzz is audible on at least

Is

a

Power

On

Checkou

Y N

002~----~~~-------~

Is

the

machine

problem

int

G

YN.

0

003

-Error codes can be obtained from the System

operator

or

from running 'TSYSEREP'

(MIM

971).

------8

Is

an

error

code

present

or

reported?

Y N

IBM

Corp.

1980

EXIT

THIS

MAP

TO

PAGE

STEP

MAP

ENTRY

NUMBER

POINT

3 024 0200

3

021

0300

3 020 0400

3 025 0500

3 019 0532

3 014 0600

3 022 0800

3 016 0

2 007 1

Probe in except where

use short probe tips due

to

noise

•

MAP

number

and page sequence number.

eThese tables list

all

the

Entry Points and Exit Points

to

and from this MAP.

eStep number.

e

Statements

that

provide additional information

about

a step.

oQuestions are

to

be answered either yes

or

no.

Continue

from

your

answer

to

the

or

instruction.

oY =yes; N =no.

e Reference numbers refer

to

a location graphic,

a maintenance procedure, a chart,

or

other

pertinent

information in

the

MIM.

oEngineering change

number

of

the

MAP.

aOff-page references identify

the

page and trace

where a

MAP

leg

continues.

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

EC

839661

3 3 3 2 a

ABC

0

.......

1--------------

MAP

0100-1

MAP

Introduction xi

o•

1

004

PAGE 2

OF

3

(Entry

Point

B)

Is

an

operational

symptom

present

or

reported?

V N

005

(Entry

Point

C)

Is

a

diagnostic

Sign-on

screen

or

a

valid

data

display

screen

format

visible

on

any

data

station?

V N

006

-Power off.

1.~------------C3

-Remove the Magnetic Stripe Reader/Elapsed

Time Counter card

(A-D1)

(MIM

501).

-Note:

Answer

no

if

card is

not

installed.

-Power on.

Is

a

diagnostic

Sign-On

screen

or

a

valid

data

display

screen

format

visible

on

an

station?

V N

007

-Reinstall the

MSR/ETC

c

Go

To

Map

1000,

En~lr'i"W!n

008

-Defective

MSR/ETC

G

MAP

0100-2

010

(Entry

Point

D)

-The following chart

shows

the areas

of

the machine.

Area

Name

Base

(MSR)

area

known?

to

run 'TSYSEREP'

(MIM

903)

for

error

information.

Does

EREP

return

usable

information?

V N

012

-Insert the diagnostic diskette and load 'DCP'

using the customers configuration

(MIM

951).

---~

017

009

-The Parity Check indicator is a Full Screen, Reverse

Image on all data stations.

O~

Go

to

Page 2,

Step

010,

Entry

Point

D.

-

If

data is present on any screen, at the time

of

the

error, the data will be flashing.

Is

a

Parity

Check

the

indicated

error?

V N

3 3

E F G

.......

~-------------CD

xii

018

-Go

to

the Entry

MAP

for

the

failing area.

eOff-page references identify

the

page and trace

where a

MAP

leg

came from.

oInstructions establish conditions

that

help you

answer

the

GExit instructions indicate

the

and entry

point

that

you should go to.

41

Commands

state

the possible fixes for

the

failure.

Fo"ow

the

commands

in

the

order

in

which

they

are presented.

oExit instructions indicate

the

entry

point

in this

MAP

that

you should go to.

eOn-page references identify

the

trace

on

the

same

page where this MAP leg continues.

How

to

Use

the

MAPs

You should observe the

following

rules and procedures

when using

the

MAPs

or

running

MOl

tests:

1.

2.

3.

4.

When

any

MOl

tests are

to

be run, the

MAP

describes

how

to

set up

the

machine in

the

correct

condition

to

answer

the

MAP

questions.

Before starting

the

error analysis, always observe

and record any existing error symptoms.

The

MAP

might

send you

to

the

MIM

for

instructions on

how

to

remove, check, adjust,

or

reinstall a FRU.

After

completing the action, return

to

the

MAP

for

additional instructions.

If

the failure

symptoms

do

not

remain constant,

you should still

attempt

to

use the

MAPs

and

MOl

tests

to

isolate

the

failure.

5. Unless you are instructed

not

to, always

power

off

the system before you remove

or

install a fuse,

cable,

or

card.

6. When a

MAP

indicates

that

a card or cable is bad,

perform the

following

steps:

a.

Inspect

the

card and socket, then reseat the

card and rerun the

test

that

failed.

b.

Remove the card

or

cable, install a

good

one,

and rerun the

test

that

failed.

7. Probe all the "lines indicated before answering

the

question

that

follpws

in the

MAP

or

MOl

test.

8. Names

of

all switches and indicators are shown in

MAPs

in the same

way

that

they appear on

the

keyboard/display

or

operator panel.

9. Hexidecimal numbers are shown

as

hex AB23.

10. An X indicates a

don't

care position

within

the

number. For example,

the

X

In

hex X54B

represents any hexadecimal number.

11.

After

you diagnose and repair a failure, run the

failing

MAP

or

MOl

test

again

to

verify that the

failure is corrected.

Probing

Information

When

Using

MAPs

When

instructed

by

the

MAPs, you should use the

general logic

probe"

(part 453212)

to

measure signal

levels. This probe is used

for

normal

IBM

5280

Distributed Data System maintenance. The probe

extender (part 453605) is used

with

the

general logic

probe

in

all

MAPs

except where you are instructed

to

use the short probe tips. Detailed information on using

and maintaining the probe is

found

in the IBM General

Logic Probe

/I

Manual,

SY27-0127,

and in

the

Diagnostic

Aids section (see 905)

of

the

IBM

5285

Programmable

Data Station Maintenance Information Manual,SY31-0600.

Normal

Conditions

After

Power

On

After

you have powered on

the

system, the

following

display examples

show

the normal conditions

of

the

display screen on the

IBM

5285. All other attached data

stations

or

dual data stations are blank.

The selected program diskette

must

be inserted into a

diskette drive and

the

diskette locking lever

must

be

closed.

If

the selected program diskette is inserted into an

attached data station diskette drive,

that

data station

must

also be powered on.

MAP

Introduction

xiii

Display Example for a Diagnostic Diskette

Status Line

l~

_________

~J

Display Example for a Machine Verification Diskette

Status Line

D

f:~

\i

i c

(.:.:.

add'r

(.:.:.

S 5 :

Par·t

i

tiD·

...

'

nU.ifl/:)(:·:·"':

P

r'

(.:.

::::

F

1",·1

TF

r;:

~:>

()

....

()

Display Example for a User IPL Program Diskette

Status Line

Pr09

r' .] i

..

, n

;";",

in

f·:·

:

DE'

\l

i c

(.:~

.;';',

d

cI

....

F.'

S'

:

Partition

number:

Press

ENTER

05-00

l~

_________

~J

~

xiv

IBM

5285

BASE

MAP

0002-1

DESCRIPTIONS

PAGE

1

OF

4

NUMBERI

DESCRIPTION

------+-----------------------------------------------------------

0100

SYSTEM

ENTRY:

This

MAP

;s

the

start

of

call

p

and

directs

0200

0210

0220

0300

0500

0511

0531

0532

0600

0800

you

to

area,

error

code,

or

operational

symptom

MAPs

or

MDI's.

POWER

ON

CHECKOUT:

This

MAP

diagnoses

the

P.O.C.

failure

syndrome.

POWER

ON

RESET:

This

MAP

diagnoses

loss

of

the

system

Power

On

Reset

function.

CONDITION

CODE:

The

MAP

directs

you

to

other

MAPs

based

on

a

condition

code

returned

by

microcode

tests.

ERROR

CODE:

This

MAP

directs

you

from

a

system

error

code

to

an

entry

or

unit

MAP.

BASE

ENTRY:

This

MAP

directs

you

to

a

unit

MAP

for

a

problem

in

the

base

system.

MAIN

MPU

ATTENTION ERROR:

This

MAP

diagnoses

the

attention

lines

to

and

from

the

main

microprocessor.

MAIN

STORAGE

ACCESS:

This

MAP

diagnoses

the

failure

of

a

microprocessor

to

access

main

storage

correctly.

MAIN

STORAGE

PARITY

CHECK

ERROR:

This

MAP

diagnoses

the

cause

of

a

main

storage

parity

check.

ROS

PATCH

CARD:

This

MAP

isolates

the

ROS

Patch

card

from

the

microprocessor

that

it

is

connected

to.

INTERMITTENT ERROR:

This

MAP

is

a

sequential

replacement

of

FRUs

in

relation

to

an

error

code

or

operational

conditions.

Copyright

IBM

Corp

1980

EC840874

PEC839787

MAP

0002-1

BASE

MAP MAP

0002-2

DESCRIPTIONS

PAGE

2

OF

4

NUMBERI

DESCRIPTION

------+-----------------------------------------------------------

1000

DATA

ENTRY

ENTRY:

This

MAP

directs

you

to

a

unit

MAP

or

1010

1011

1020

1021

1025

1026

1030

1040

2000

2010

2210

MDI

based

on a

data

entry

type

of

error

condition.

DATA

ENTRY

A-Cl

DISPLAY:

This

MAP

diagnoses

display

faiiures

display

#0

and/or

common

bus

failures.

DATA

ENTRY

A-El

DISPLAY:

This

MAP

diagnoses

display

failures

displays

#1/2.

DATA

ENTRY

A-Cl

KEYBOARD:

This

MAP

diagnoses

keybord

failures

keyboard

#0

and/or

common

bus

failures.

DATA

ENTRY

A-El

KEYBOARD:

This

MAP

diagnoses

failures

keyboards

#1/2.

DATA

ENTRY

ERROR

CODE:

This

MAP

diagnoses

failures

Data

Entry

error

codes

9119,

9120

or

9231

are

generated

by

IPL

of

the

Diagnostic

Diskette.

DATA

ENTRY

KEYLOCK:

This

MAP

diagnoses

failures

with

the

keylock

feature.

DATA

ENTRY

MAGNETIC

STRIPE

READER:

This

MAP

diagnoses

failures

MSR

#0,

1,

2

or

3.

DATA

ENTRY

ELAPSED

TIME

COUNTER:

This

MAP

diagnoses

failures

Elapsed

Time

Counter

feature.

DISKETTE

DRIVE

ENTRY:

This

MAP

directs

you

to

a

unit

MAP

based

on

error

codes

and

condition

codes.

DISKETTE

BASE

SWAP:

This

MAP

directs

you

to

perform

basic

swapping

and

directs

you

to

a

specific

problem

area.

DISKETTE

CABLE

SWAP:

This

MAP

is

used

for

cable

problems.

EC840874

PECS397S7

MAP

0002-2

BASE

MAP

0002-3

DESCRIPTIONS

PAGE

3

OF

4

NUMBERI

DESCRIPTION

------+-----------------------------------------------------------

2250

2

DRIVE.

N/DDCC:

This

MAP

is

for

problem

determination

for

2260

2270

2280

3000

3011

3012

3013

3014

3015

two

drives

installed

and

the

diskette

drive

control

card

is

not

failing_

2

DRIVE.

DDCC:

This

MAP

is

for

problem

determination

for

two

drives

installed

and

the

diskette

drive

control

card

might

be

failing-

MINIMUM CONFIGURATION SYSTEM:

This

MAP

is

for

a

minimum

configuration

system,l

drive

only,

connected

to

the

system.

INTERFACE/

LED:

This

MAP

is

for

problem

isolation

with

DRIVE

IN

USE

led

failures

and

interchange

problems.

COMMUNICATIONS ENTRY:

This

MAP

checks

the

type

of

communications

feature

installed

and

directs

you

to

the

communications

MDI's.

TRANSMIT/RECEIVE

LEVEL CHECK:

This

MAP

checks

the

dB

levels

that

are

being

transmitted

and

received

for

3SLS.

CBS TYPE COUPLER

TEST:

This

MAP

diagnoses

the

CBS

coupler.

CDT

TYPE COUPLER

TEST:

This

MAP

diagnoses

the

CDT

coupler.

DIGITAL

NETWORK

WITH DDSA:

This

MAP

is

used

to

do

a

remote

wrap

for

DDSA.

OTHER

COMMUNICATIONS ERRORS:

This

MAP

diagnoses

errors

not

detected

by

the

MDI's.

ECS40874

PEC8397S7

MAP

0002-3

BASE

MAP

0002-4

DESCRIPTIONS

PAGE

4

OF

4

NUMBERI

DESCRIPTION

------+-----------------------------------------------------------

3016

W.T.

LINE

PLATE

AUTO

ANSWER:

This

MAP

diagnoses

the

auto

3017

301S

3019

7000

SOOO

S030

ariswe~

funciton

of

the

W.T.

line

plate.

W.T.

LINE

PLATE

MANUAL'CALL:

This

MAP

diagnoses

the

manual

call

function

of

the

W~T.

line

plate.

W.T.

LINE

PLATE

M~N~AL

ANSWER:

This

MAP

diagnoses

the

manual

answer

f~nctio~

of

the

W.T.

line

plate.

EIA OPEN/SHORT CIRCUIT TEST:

This

MAP

is

used

to

check

for

shorts

or

opens

in

the

EIA

cables.

PRINTER

ENTRY:

Directs

you

to

device

MAPs

or

MDI's,

based

on

a

printer

type

errors.

POWER

ENTRY:

This

MAP

diagnoses

primary

power

and

D~C.

power

problems.

D.

C.

~ISTRIBUTIO~:

this

MAP

isolates

D.C.

distribution

cable

type

of

problems.

ECS40S74

PECS39787

MAP

0002-4

IBM

5285

BASE

MAP

SYSTEM ENTRY

MAP

PAGE

1

OF

5

ENTRY

POINTS

FROM

I ENTER

THIS

MAP

-------+----------------------

MAP

I ENTRY

PAGE

STEP

NUMBER

POINT

NUMBER

-------+----------------------

0300

AD

2

004

1000

A 1

001

1010

A 1

001

1025

A 1

001

1030

A 1

001

3000

A 1

001

7000

A 1

001

(ENTRY

POINT

A)

-

If

the

GLP

extender

cable

(PN

453605)

is.

used,

the

following

must

be

observed.

1.

The

extender

cable

must

not

be

used

to

probe

any

clock

lines.

2.

The

extender

cable

must

not

lay

across

the

logic

board.

Signals

may

be

induced

into

the

probe

giving

false

indications.

-

See

MIM

905

for

PROBE

setup

and

test.

Did

the

System

fail

to

IPL

usi~g

the

Customer's

diskette?

Y N

5 2

A 8

Copyright

IBM

Corp

1980

MAP

0100-1

EXIT

POINTS

EXIT

THIS

MAP

I

TO

---------------+--------------

PAGE

STEP I

MAP

ENTRY

NUMBER

POINT

---------------+--------------

2

007

0200

A

5

036

0200

A

5

030

0300

A

3

015

0300

A

3

012

0300

A

5

038

0500

B

5

032

0532

A

5

028

0800

A

4

021

0800

A

5

031

0800

A

3

017

1000

A

3

020

1000

A

3

011

1000

B

4

025

1000

B

4

023

1025

A

ECS40874

PEC8397S7

MAP

0100-1

B

1 , BASE

MAP

SYSTEM

ENTRY

PAGE

2

OF

5

002

(ENTRY

POINT

AA)

See

MIM

Parity

925

for

Check

indications.

EXAMPLES

of

display

-

The

Parity

Check

indicator

is

a

Full

Screen

Reverse

Image

on

ALL

Data

Stations.

on

If

data

is

present

screen,

at

the

time

of

error,

the

data

will

flashing.

any

the

be

Is

a

Parity

Check

the

indicated

error?

Y N

003

Error

codes

can

be

obtained

from

the

System

operator

or

from

running

'TSYSEREP'

or

'TCOMEREP'

(MIM

975).

Is

an

error

code

present

or

reported?

Y N

004

(ENTRY

POINT

AD)

Is

the

machine

problem

intermittent?

Y N

555

C D E F

F

MAP

0100-2

005

The

5280

System

is

divided

into

the

following

functional

areas.

Area

Name

Base

(Main

MPU

and

Main

Storage)

Base

(Feature

Main

MPU)

Keyboard/Display

Keylock

Magnetic

Stripe

Reader

Elapsed

Time

Counter

Diskette

Communications

Printer

Power

Supply

NOTE:

If

you

this

step

have

been

through

before

answer

NO

to

this

question.

Does

the

reported

failure

fit

into

one

of

these

areas?

Y N

006

(ENTRY

POINT

B)

SYSTEM CHECKOUT PROCEDURE

Power

Off.

Insert

Diagnostic

Diskette

1

in

drive

4000

and

close

the

locking

lever.

Power

On.

Is

the

(50-01)

First

Display

Prompt

(MIM

941)

visible

on

Data

Station

O?

Y N

5 3

G H

007

GO

TO

t'1AP

0200,

ENTRY

POINT

A.

EC840874

PECS397S7

MAP

0100-2

IBM 5280 User manual

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