DEC RM05 User Manual

EK-ORM05-FG-OOl

RM05 Fault

Isolation

Guide

Prepared

Digital Equipment Corporation

by

Educational Services

of

All

Rights Reserved

The material in this manual is for informational purposes and is subject to change without notice.

Digital Equipment Corporation assumes no responsibility for any errors which

in

may appear

this manual.

Printed in

U.S.A.

• Class A Computing Devices: Notice:

The equipment has been type tested and found to comply with the Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which

are designed to provide reasonable protection against such radio frequency

terference when operated

ment own expense may

The chusetts:

This equipment generates, uses, and may emit radio frequency energy.

limits

fc)r

in-

in

a commercial environment. Operation

in

a residential area may cause interference in which case the user at his

of

this equip-

be required to take measures to correct the interference.

following are trademarks of Digital Equipment Corporation, Maynard, Massa-

DEC DECUS DIGITAL Digital Logo PDP UNIBUS VAX

DECnet DECsystem-10 DECSYSTEM-20

DECwriter DIBOL

EduSystem

lAS MASSBUS

OMNIBUS OS/8 PDT RSTS RSX VMS

VT

a

SCOPE

RMSS

FAULT

ISOLATION

GUIDE

This

document documentation information.

which problem this

The between

should

cannot

manual,

RMOS

the

has appl,icable. Many

or have say accuracy the tion

specific

component

been

all

listed

possibilities

of

field.

with

the

is

intended

by

Problems

encompass

be

satisfactorily

the

FSE

a

VDE

two

will

error

(s)

• The in

t.his

This

document

RM05

Field

providing

are

the

is

urged

and

NON-VDE

be

symptoms

most

this

documant.

have

is

Maintenance

to

supplement

additional

listed

majority

to

request

called

can

be

obvious

been

will

be

intended

the

by symptom and

of

all

RMSS

resolved

through

additional

version.

out

in

this

pinpointed

and known

This

of

included.

dependent

to

be

Print

Set.

existing

trou~leshooting

RM05

solution

calls.

the

use

If

a

of

support.

The

to

di

fference

guide

a

module(s)

where

combinations

course

on

used

is

The

inputs

in

not

overall

from

conjunc-

to

i

RM95

FAULT

CONTENTS

ISOLATION GUIDE

1.0

2.0

PRELIMINARY ACTION

1.1

1.2

1.3

REQUIRED

GETTING

THINGS

1.3.1

1.3.2

1.3.3

1.3.4

1.3.5

EQUIPMENT

STARTED

TO

BE

AWARE File Bad

Corruption

Packs

Environmental

Bus

Loading

Power

Supplies

TROUBLE-SHOOTING AIDS

2.

1

2.2

2.3

ERROR SITE

CUSTOMER

LOG

MANAGEMENT

DISK

PACK

OF

Problems

GUIDE/LARS

USAGE

LOG

REPORTS

2.4

2.5

ON

LINE DIAGNOSTICS

11/70

2.5.1

2.5.2

2.5.3

2.5.4

2.5.5

2.5.6

2.5.7

2.5.8

DIAGNOSTICS

CERHA CZRML CZRMM, CZRMP, CZRMR, CZRMT CZRMU CZRMV

N, Q

S

RH70 Formatter

Functional

0

Diskless Dual

Compatibility

Performance Extended

Port

Test

Diagnostic

Logic

Exerciser

Drive

Test

Part

Test

l,

Part

Part.

2,

1 &

1 & 2

&

3 2

11

RMes

FAULT

ISOLATION GUIDE

3.9

2.6

POWER

3.1

VAX

DIAGNOSTICS

2.6.1

2.6.2

2.6.3

2.6.4

ON

AND

POWER

3.1.1

3.1.2

3.1.3

EVRAA EVRAC EVRDA EVRDB

MOTOR

ON

PROBLEMS

CB1 CB2 CB3

3.1.3.1

3.1.3.2

CONTENTS

SEQUENCE

Trips Trips Trips

When

Immediately Pressed

(CONT)

Reliability Disk RMeX

RM0X

Formatter

Diskless Functional

CB1

Turned

After

On

Start

Switch

Is

3.1.4

3.1.5

3.1.6

3.1.7

3.1.8

3.1.9

3.1.19

3.1.11

3.1.12

3.1.3.3

CB4 CBS CB7 CB8 All

+29Y

+28V,

High

-46V, Low

-46V,

Ripple

Trips Or

CB6 Trips Trips DC

Voltages

-29V,

OR

Low

+46V,

+46V And

Too

Shortly Squealing

Shortly

Trips

Missing

+29V,

And

-16V

High

For

After

-9.7V,

-16V

Are Just

Noise

Are

Motor

At

Test

+9.7V

All

Missing

One

Voltage

Turns

Points

Are

Ei

ther

With

and

Either

High

A

No

All

Or

111

RMes

FAULT

ISOLATION GUIDE

3.2

3.

3

DRIVE

3.2.2

3.2.3 POWER

MOTOR

Motor

'Motor

Pressed

3.2.2.1

3.2.2.2

3.2.2.3

3.2.2.4

Motor

ON

AND

CONTENTS

Starts

Does

+20v

A1Q4,

+20V

A1Q4,

+20V

A1Q4,

+20V

but

Overheats

MOTOR~

SEQUENCE

(CONT)

When

Not

missing

OK

208+

Turn

and

CBl

9.7V

at

208+

at

VAC

Thermal VDE

Is

Turned

When

at

is

OK

at

is

missing

3

VAC

3 Of A1Q2,

is

missing

Cutout

DRIVES

Start

3

of

is

On

Switch

of

A1Q2,

of

A1Q2,

A1Q2, A1Q3,

OK

at

AlQ3,

at

Activates

Is

AIQ3,

2

AIQ4

2

3.4

POWER

3.4.1

3.4.2

3.4.3

3.4.4

3.4.5

3.4.6

ON

PROBLEMS CBl CB2

CB3 CB4

CBS CB6

Trips Trips

Trips

Trips or

CB7

Short

When

In

CBl

Immediatley Turned

Shortly

Also Shortly

On

After

a

Squealing

After

Trips

+20Y

is

Turned

Distribution

On

After

Motor

Noise

Motor

Start

Starts

is

Switch

Turning;

Heard

Turing

is

3.4.7

3.4.B

CBB All

Trips

DC

Voltages

Iv

Missing

and

no

+20Y

RM95

FAULT

ISOLATION

GUIDE

3.5

3.4.9

3.4.19

3.4.11

3.4.12 DRIVE

3.5.1

3.5.2

+28v, High

-46v,

-46v Ripple

MOTOR

Drive

Pressed

3.5.2.1

3.5.2.2

3.5.2.3

3.5.2.4

CONTENTS

+29v,

or

Low

and

+46v

and

+46v

too

High

PROBLEMS

Motor Motor

Starts

Does

+29Y +29Y +20Y

Motor

Activates

(CONT)

-20v,

Are

Missing

for

Missing

is

-9.7v,

Both

Just

When

not

CB1

Turn

but

OK OK

and

Overheats

+9.7v

High

one

or

Voltage

Is

When

9.7v

9.7v 208

is

VACC

and Terma1

Are

Low

Turned St.art

OK

is

Missing

is

Either

On

Switch

Ok

Cutout

All

is

4.8

HEAD

4.

1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

LOAD

SEQUENCE

HEADS REVERSE

HEADS

DO

REVERSE CARRIAGE

AND

HEADS

CARRIAGE AND

HEl~DS

HEADS

(INNER

HEADS

RTZ

:LOAD,

IS UNABLE UNABLE

DO

NOT

CURRENT

NOT

CURRENT

HITS

STAY

HITS

RETRACT

LOAD,

GUARD

NON

FUNCTIONAL

TO

SEEK

TO

SEEK

PROBLEMS

LOAD

AFTER

IS

AFTER

OK

FORWARD

OUT

ON

FORWARD

HESITATES

BAND)

BUT

UNLOAD,

TO

PRIME

TO

1466

UP

TO

UP

TO

STOP,

CB4

PACK

STOP,

AND

FAULT

THEN

FAULT

CYLINDERS;

(8)

SPEED

TRIPS,

CREEPS

LIGHT

TIME

LIGHT

ON

1,

2,

OUT

FAULT

ON,

TO

FORWARD

4,

AND

BUT

LIGHT

CB4

- 512

NO

HOLD

ON,

TRIPS

EOT

4.19

UNABLE

TO

FORCE A SEEK

v

ERROR

WITH

FTU

TO

CYL

1467

(8)

RM"S

FAULT

ISOLATION GUIDE

5

..

6.9

9

4.11

4.12 PCMER

5.1

5.2

5.3

ERROR

6.1

HEADS START

DRIVE

AND

DO

LIGHT

MOTOR

POWER

NOT

IS

BRAKE

FAIL

UNLOAD

MASSFAIL AC

LO -UNSAFE

DC

LO -RM

BITS -CONTROL,

CONTROL

6.1.1

6.1.2

6.1.3

ADAPTER

REGISTER MCPE

TRE

SC

Bit

CONTENTS

WHEN

OFF,

PROBLEMS

STATUS

Bit

PACK

IS

INOPERATIVE

176700

13

14

15

(CONT)

START

SPINNING

AND

ERROR

SWITCH

REGISTERS

IS

~TURNED

OFF,

6.2

6.3

STATUS

6.2.1

6.2.2

6.2.3

6.2.4

6.2.5

6.2.6

6.2.7

6.2.8

ERROR

6.3.1

6.3.2

6.3.3

REGISTER

MOPE

MXF

PGE NEM NED PE,

UPE

weE

DLT

REGISTER

ILF ILR

RMR

176710

Bit

Bit Bit Bit

Bit

1

Bit Bit

Bit

08 09 10

11 12

Bit

13 14 15 176714

"0

01

92

6.3.4

6.3.5

PAR

FER

Bit

"3 04

vi

MIS

FAULT

ISOLATION GUIDE

6.4

6.3.6

6.3.7

6.3.8

6.3.9

6.3.10

6.3.11

6.3.12

6.3.13

6.3.14

6.3.15

6.3.16 ERROR

CONTENTS

WCF

ECH HCE HCRC

AOE

IAE

WLE DTE

OPI UNS

OCR

REGISTER 2

Bit Bit Bit

Bit

Bit Bit Bit Bit Bit Bit

(CONT) 05 06 07

08

09 10

11 12 13 14 15 176740

7.8

n.e

6.4.1

6.4.2

6.4.3

6.4.4

6.4.5

6.4.6

6.4.7

6.4.8

ERROR COMPATIBILITY

8.1

8.2

8.3

BOOTSTRAP

PROBLEM CAUSES ERROR

SYMPTOMS

DPE DVC

LBC LSC IVC OPE SKI BSE

DEFINITION

Bit Bit Bit Bit

Bit

Bit Bit Bit

PROBLEMS

03 07 10 11 12 13 14 15

vii

RMI5

FAULT

ISOLATION GUIDE

9.9

11.1

11.9

12.0

13.9

14.9

15.9

DATA DRIVE DUAL PACK

BASE

PORT

CORRUPTION

NOT

READY PROBLEMS

ERRORS

UNEXPECTED

ADJUSTMENTS

FLOW

DIAGRAMS/TEST POINTS

CONTENTS

OR

DRIVE

ATTENTIONS

(CONT)

HANGS

viii

1.0

PRELIMINARY

ACTION

1.1 The

RM05

REQUIRED

following

in

minimum

1.

Spares

a. b.

c.

d.

2.

3.

4.

5.

6.

Scratch

CE

Field Maintenance Manuals a.

b. c. d.

EQUIPMENT

equipment

time:

Ki

ts

Spares

Spares MBA

RHXX

Kit

Controller

Spares

Pack

Test

30-17108-00

Unit

Print

(on

micro

RM05 -Service

RM05 -User's

BK7BIE/F

Technical

Illustrated

should

11 12

29-23600 29-23601

Kit

30-17107-00

Set

fiche)

Manual

Guide

be

available

MP0175

and/or

- EK-RM05-SV

- EK-ORM05-UG

Description

Parts

Breakdown

Micro

Manual-

to

troubleshoot

fiche

-

an

reader.

ER-BK7B1-TM ER-BK7BI-IP

7.

8.

9.

10.

11.

Special a.

b. c.

Tools

15"

*2

"C"

Ring

Heavy

DVM

Oscilloscope

Field

Service

Diagnostics

-

other

Phillips

than

screwdriver

Removal/Replacement

Duty

Spring

Replacement

(calibrated)

-

Tool up

to

Kit

date.

with

in

Spares

dental

Tool

mirror

Kit

Set

(spring

,2

and

hook)

penlight.

1

1.2

GETTING

STARTED Customer Many

Inputs

problems comprehensive object was

of

really

the

procedures, each

is

poss

situation,

also

ible.

1.

2.

3.

4.

advisable

What How Can Can

scoping)

5.

Has recently?

6.

Did

troubleshooting customer you you

isolate

can

investigation

questions

a

hardware

or

software

but

to

are

the

often

the

problem

the

•

any

this

disk

problem

input,

actually

do,

use

and

be

asked

malfunction,

are

some

verify

apparent

does

the

problem

Section

fix

eliminated

of

will

at

fault.

of

the

major

the

answers

symptoms?

problem

be

demonstrated?

frequency

hardware

ever

occur

"tools"

you

should

a

problem

6

the

specific

at

the

symptoms.

be

to

or

The

points

occur?

be

before

described

be

able

in

of

this

malfunction.

this

stage

determine

if

the

pack,

questions

are

listed

you

get

(If

by

so,

increased?

or

software

the

change?

in

Section

to

determine

the

RM05

documentation

by

doing

Obviously,

whether

operational

will

vary

below.

other

do

means

itl)

(For

been

changed

Using

1.1

and whether

subsystem.

to

a

the

there

in It if

easier

the the

If

help

1.3

1.3.1 Frequently

loads

softwa

the

or re

console a.

b.

THINGS File

Corruption

the

runs

properly.

usuall

or

Is

this (both in

the

disk)

Is

this

and a check. AND

START

VAX

the

PROTECT

TO

BE

AWARE

disk

y

is

at

errorlog,

a

relatively

utilities

way bad

pack

read

Run

only

either

204,

Formatter

THE

DRIVEl

blamed

While

faul

check

have

blocks

any

exercise

"R"

OF

for

this

t.

If

the

new

disk

bugs

are

good?

A

may

the

Performance

COMMAND,

(EVRAC)

I I

2

a

file

can

be

no

device

following

created

that

can

handled,

block

pick

SWR

- 3

"Read

or

task

caused

er

rors

key

points:

by

cause

never

may

have

up a bad

Exerciser

for

a

All"

Command.

that

by

hardware,

are

Preserve

file

corruption

trust

just

header

(CZRMU)

11/70,

no

longer

the

shown on

or

DSC?

a

new

gone

or

bad

data

LOAD

or

for

WRITE

a

c.

Has If

the

device

affected

errors

software are

shown,

been

keep

changed

reading.

recently?

1.3.2 It

is suddenly the for

backup

it

may clean, will

image

1.3.3 This

Bad

amazing

giving

bad

area

pack

maintenance

pack.

happen

ask

show

up

that

Environmental

is

a electromagnetic frequent recently for

heavy shutdowns, forklifts have the

only

problems,

changed

idle

(the

caused

way

specialist.

Packs

how

many

errors.

is

(header,

Look

during

the

customer

on

Errorlog

is

bad.

broad

radiation.

and

equipment

time spark

problems.

to

be

inc1ud

for

the

Problems

field

so

verify

pay

on

etc.

coil),

sure

calls

The

result

symptoms

data,

ing

similarities

same

to

use

provided

that

attention

the

In

general

and

If

you

is

etc.).

bad

function

a

backup

it

covers

Power

same

have

to

consult

from

can

The

block

in

the

is

not

and the to

configuration

when

p~

keep

computer

reason

a

previously

vary

according

customer

mapping,

failure

and,

pack.

if

Obvious

Errorlog

temperature,

grounding

the

errors

(or

your

close

eyes

room

to

suspect

an

local

trusted

is

responsible

and

that

diagnostics

or

power

are

has

occur.

by),

open;

air

conditioners

environment,

environmental

to

keeping

indicate

bad

the

system

the

not

radios;

pack

where

a

run

areas

and most been

L60k

plant

1.3.4

A.C.

the

usually

major

(with

large

Bus

Unibus

intermi

clue

a

scope,

enough Troubleshooting loading

1.3.5

Check scope Also

for

Power

all

for

check

supplies

ripple

the

Loading

loading

and

thE~

ttent,

is

to

hopefully),

to

Guide

more

detail.

Supplies

connections.

look

on

can

fast

cause

for

the

cause

devices

and

at

a

(on

microfiche-red

voltage

supplies;

virtually

see

diagnostics

working

and

gate

look

transition.

with

a

See

table

any

error

it

first.

usually

bus

for

with

dropouts

section)

a

DVM

primecause

3-1.

on

The

don'

everything

See

if

available.

of

any

device

symptoms

t

fail.

running

in

the the

signals

Unibus

section

intermittents.

on

Then

on are The

AC

3

2.g

TROUBLESHOOTING

AIDS

2.1

This

is

ERROR

one

maintenance.

operating wIll.

Guide.

The

There

operation

Error

1.

2.

log

Was

What of semi-solid

system,

and

will

filter

day

LOG

of

the

If

you

the

procedure

should

printout

Be

certain

time

of you're terminated

available generator. errors

aid

in

there

out

is

common

environmental

most

valuable

don't

customer

should

be

a

of

the

that

the

using,

so

to Otherwise,

you

are

determining:

actually corrupted

between

hardware

know how

and

be

software

Error

NOTE

the

failure

and

that

the

looking

a

hardware

file

errors?

problems

problems.

and

least

to

DEC

entered

manual

Log.

error

is

error

current

errorlog

you

for.

type

used

run

it

software

in

on

file

on

the

logging

may

miss

error?

problems.

The

show

for

personnel

the

site

for

disk

file

report

bad

up

here,

tools

the

Site

deta:iling

the

is is

the

This

blocks

for

system

particular

probably

Management

helps

and

as

do

time

most

the

you

3.

4.

5.

2.2

Look Pa y

parts

from

SITE

up

spec

were

the

indicates maintenance alignments situations

How

often

is

that

What

was task fa

i 1

ure?

involved?

What pre

do

- d i a 9 exercise have

to

MANAGEMENT

the

disk

i a 1

at

changed.

customer.

a

on

against

indicating

did

you

the

or

function

the

nos

harder.

work

history

ten t ion

problem

the

will

system

see

error

'a

doing

occur?

diagnostic

always

Are

tic

error

there

symptoms

i n d i

cat

On

system

ion

intermi

with.

GUIDE/LARS REPORTS

in

to

Correlate

It

is

wh

not

the

a t

LARS

ad j us

this

unusual

starting

device.

the

customer's

unreadable

Also,

packs.

Tells

failure.

at

the

time?

happening

or

indicate?

0 f

wh

ttents,

reports

tme

n t s

to

the

to

find

immediately

check

disk

you

Is

at

the

other

dev

This

at

to

this

or

we

may

maintenance

r e mad e

information

that

after

information

pack

usage

how

one

time

1

00

the

gives

likely

particular

of

ice

k

be

er

for,

all

c:lnd

you

error

the

on

log

ror

you

log.

wh

have

last

head

it

the

s

a

0 r

you

i c h

log

in

4

2.3

CUSTOMER

DISK

PACK

USAGE

LOG

Customers and

bad

a

potential

and

identify

2.4 These

great

diagnostics

help release time

them

found

and

in

2.5 In

many tool. ind

Consequently

ividua1

diagnostics

Reliability, providing At

the

time

are:

should

blocks.

pack

bad

keep

This

information

problem.

blocks

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verifies

maximum

mounted

transfer

checks

detect

offset,

These

hardware.

be

used

four

in

the

positioning

test

the

pack

seek

fi

rst

and

test

Start

on

sections

Command

commands

addressability

logic.

and

r~eturn

throughly

rotational

times.

when

line.

and

tests

to

check

4.

Suggested the

Diskless

read/write

Manual

Intervention

interventions;

address

Use:

plugs,

Verifies

Diagnostic

and

seeks.

pack and

logic

and

Tests

acknowledge,

write

tests

not

lock

tested

basic

read

switch.

in

drive

Tests

in

the

all

preset,

RM

Adapter

functions

operator

with

such

as

14

3.0

POWER

ON

AND

MOTOR

SEQUENCE

NON-VDE

DRIVES

This

swi

section

tch success thorough all

areas

1.

2.

3.

concerns

is

pressed,

of

troubleshooting

and

careful

is

in

order

Check

all

and

visual

for

circuit

CB6, CB7, and CB8. Check

air

cleaning

If rep 1 ace

loaded

Check voltage supply of and

filter

the

60

50

adj

Table

for

and

air

th

e f i 1 t e r •

at

cylinder

Hz Hz -

the

RM

and

if

the

usting

3-1.

blower

at

also

pressure

.15

.10

Adapter

ripple

voltage

it

from

the

any

the

or or

back

the

dr

time

ive

motor

power on

observations.

power

breakers

motor

operation.

bottom

check

0.

less,

is

Air

and

the

low,

p.r

replace

drive

levels.

is

grossly

to

normal

CBl

problems

or

motor

-

CBl,

of

absolute

check

e s s

ute

power

Replace

level.

is

turned

comes up

is

A

general problems.

CB2, CB3, CB4,

Inspect

the

drive

filter

for

rea

din

gsa

filter.

supplies

any

adjustable

out

of

tolerance

on,

to

s·peed.

dependent

inspection

the

for

air

leaks

r e

See

para.

the

primary

need

pressure.

wit

h he

for

proper

instead

start

The

upon

of

CBS,

of

and/or

ads

power

14.0.

3.

1

3.1.1

3.1.2

3.1.2.1

3.1.3

POWER

CBl

Trips

AlQl, Blower Time

Meter AICl, YEN,

YFN

CRI-CR4

Tl,

T2

eBI

CB2

Trips

AlQl,

T3

CB2

Short

K6,

YFN,

CB3

Trips

ON

PR,OBLEMS

AIQ5

Motor

AIC2 -

AIQ5

In

+29Y

K7,

1<8

YEN

CAUTION:

Distribution

Capacitors

charged

15

3.1.3.1

When

CBl

AIQ2, AIQ3

Is

Turned

On

3.1.3.3

Immediately Parking

Motor

Shortly Noise

Belt

Tension Shortly Belt

Tension

Motor

CB4

Trips

Carriage Head Load

A17

Servo

Po K7 Voice

.22uf

Coil Capacitor

CB4

After

B-rake

After

Is

Heard

After

Lock

Switch

we r Amp

Assembly

Motor

Bad

at

TB6

The

Start

Starts

Or

Misadjusted

Pins

Switch

Turning

7 & B

Is

Turned

Also

On

a

Squealing

3.1.5

3.1.6

_3.1.7

CBS

OR

5

Volt Module Servo

YFN Control CBS

or

CB7

Trips

Module

A2

Backplane

CBB

Trips

E"1

A2

Backplane

CBB

CB6

Trips

Regulator

Preamp

Panel

CB6

A10, A14,

short

(CBS

AlS,

only)

A16,

A17,

AlB

16

~~.1.8

All

DC

Vol

CB2

Tripped

YEN A1Q1 CBS

or

CB6 T3 +20Y

may be

Paragraph

tages

-

See

Missing

para

bad -interlock

loaded

3.1.2.1

At

3.1.2

down

~rest

Points

contacts

but

CB2

is

and

No

not

+20Y

tripped

see

3.1.9

:3

.1.10

3.1.11

3.1.12

3.2

+28V, AC

-20V,

input

+20V,

A1C2 -CAUTION: T2

-46V,

AC

+46V

input

I~ND

A1C1 T1

-46V,

+46V,

AND

A1QS

YFN

-9.7V Ripple YEN

YFN DRIVE

missing

Too

for for

MOTOR

High

all

DC

just

PROBLEMS

-16V

-9.7V,

Capacitor

-16V

Are

-16V

For

Just

voltages

Are

+9.7V

charged

All

Ei

Missing

One

except

Are

ther

Voltage

-16V

Either

High

or

All

Low

High

or

Low

3.2.1

3.2.2

3.2.2.1

Drive

A08

YFN Start

Drive

+21Y

OJ(

YFN A08

Motor

Starts

Switch Motor Does

Missing

At

When

Not

CBl

Turn

3

17

Is

Turned

When

of

Start

AIQ2, AIQ3, AIQ4,

On

Switch

Is

Pressed

AND

9.7V

Is

3.2.2.2

+28Y

Missing

YEN

CBE

T2

OK

At

3

of

A1Q2,

A1Q3,

A1Q4,

and

9.

7V

Is

3".2.2.3

3.2.2.4

3.2.3

Measure

seeks. use

Ground

+28Y

At

K8

OK

Motor +29Y

OK

Missing AIQ2, AIQ3,

Motor

Overheats

AIQ4 Motor

while

the

Connect

T.P.

At

2

overheated

At

2

AIQ4

DRIVE

drive

meter

to

3

of

or

3

of

and

Thermal

POWER

is

performing

power

A1Q2,

A1Q3, A1Q4,

bad

A1Q2, A1Q3,

Cutout

TABLE

3-1

SUPPLY

supply

LEVELS

128

test

A1Q4,

Activates

cylinder

points

and

but

con

and

298+

208+

tin

be

VAC

sure

Is

VAC

U 0 U 5

OK

Is

to

Voltage

+46

-46 +9.7

-9.7 +20

-20

+28

The 5 volts cylinder at

the

backplane.

+5

-5

is

checked

seeks

but

A2JD94-94A A2JD94-01A

the

18

Tolerance

-2,

+5

+2,

-5

+/-

+/+/-

-/+

also

with

test

+/-

.95

+/-

.95

1 1

2

2 2

the

points

volts

128

are

RM

ADAPTER

VOLTAGE

LEVELS

Triacs

3.3 This

swi

section

tch

success

thorough

all

areas

01,

02, 03,

POWER

is

pressed

of

and

is

Voltage

Test

+5V

-15V TABLE

04,

05

out

of

Terminal

+

••

_>

3

+

4

1

4

ON

AND

concerns

troubl~:~shooting

careful in

order

.•

_>

--> ..

-->

11

and

4

3 2 1

or

MOTOR

from

the

visual

for

any

2 SEOUENCE

the

dr

power on

observations.

power

circuit

time

ive

Point

AA2

AB2

3-2

Reading

25

1

Infinity

VDE

CB1

motor

problems

or

motor

readirtgs.

Ohms

K

Ohms

DRIVES

is

turned

comes up

A

general problems.

Toleranc~

+4.9

-14.8

(Forward

to

bias)

(Reverse

on,

to

speed.

is

dependent

inspection

+5.2

-15.3

bias)

the

start

The

upon

of

1.

2.

3.

Check

all

CB6, CB7, Check

air

for

filter

cleaning

If

the

air

replace

heads

Check

loaded

6~

5~

the

Hz Hz

voltage supply of

adjusting

and

if

Table

and

t.hhe

-

RM

and

the 3-3.

circuit

CB8.

blower

at

also

pressure

filter.

at

.15

.1~

Adapter

ripple

voltage

it

break~rs

motor

the

bottom

check

is cylinger or

less,

or

less,

and

levels.

back

to

operation.

the

low,

Air

0.

replace replace

drive

is

grossly

normal

19

- CB1, CB2, CB3, CB4, CBS,

of

the

absolute

check

pressure

Inspect

drive

filter

for

readings

air

the

for

air

leaks

primary

need

pressure.

and/or

are

with

filter. filter.

power

Replace

out

level.

supplies

any

of

tolerance

adjustable

See

for

instead

paragraph

proper

power

14.0

of

3.4

POWER

ON

PROBLEMS

3.4.1

3.4.2

3.4.3

CBl

Trips

Blower Time

Motor

Meter

Cl -Caution:

FCFN

Module TI-T2 CBl

C82

Trips

Tl FeFN

Modules

CB2

Short

in

Kl CFNN

C83

Trips

Eel

A2

backplane

CB3

+28Y

short

Capacitor

Distribution

charged

3.4.4.3

3.4.4.4

When

Relay

CBl

box

Immediately

FCNN

CFNN

Module

Module Voice CB4

Shortly Noise

Belt

tension Shortly

Belt

tension

Motor/brake

Is

Coil

After

is

After

Turned

After

Assembly

Heard

Motor

assembly

On

Start

Motor

Starts

Switch

Turning

Is

Turned

Turning

On

Also

A

Squeal

ing

28

3.4.5

CBS

Trips

3.4.7

3.4.8

CFNN

module Carriage Voice K2

CB6 5

volt CCBN CB6

CB8

coil

on

CFNN

or

module

or Trips

Module

A2

backplane

All

DC

T2

FI-F8

CCBN

FCFN

module

module Auxiliary Breakers Tl CB2

locking

assembly module

CB7

Trips

regulator

module

CB7

Ale,

A14,

AlS,

short

Votalges

Missing

circuit

CB3, CB6, CB7,

A16,

and

CB8

~17,

no

+2ey

Al8

3.4.9

3.4.18

3.4.11

3.4.12

3.5

+28v,

T2 CCBN

-46v

T2 CCBN

-46v CCBN

46"

AC

Ripple

CCBN

DRIVE

+29v,

mod

ul

e·

and

+46v

mocule and

+46v

module

input

Too High

Module

MOTOR

-2ev,

Are

(CRl,

-9.7v,

Both

CR2, CRS, CRle)

Missing

(CRl,

CR2, CR9, CRIe)

for

Just

PROBLEMS

Are

High

one

Either

or

Low

Voltage

All

High

or

Low

21

3.5.1

Drive A98

module Relay Start

Motor

box switch

Starts

When

CBl

is

Turned

On

3.5.2

3.5.2.1

3.5.2.2

3.5.2.3

3.5.2.4

3.6 The

drive

is

performing power point.

Drive

+21Y CFNN

A98

+29Y CCBN

CB6 +20Y

K3

Motor/brake Motor Relay

Motor/brake

DRIVE

power

supply

Refer

Motor· Does

is

OK

module

is

OK

module

or

CB7

is

OK

and

in

relay

Overheats box

POWER

SUPPLY

supply

128

test

to

cyl

points

table

not

Turn

but

9.7v

But

9.7v

298

VAC

box

overheating

and

assembly

LEVELS

voltage

inder

3-3

continuous

and

be

for

When

is

Missing

is

Missing

is

or

Termal

levels

sure

voltage

Start

OK

bad

Cutout

are

seeks.

to

use

tolerances.

Switch

Activates

measured

ground

is

while

Connect

test

Pressed

the

drive

meter

to

The 5

cylinder chassis

volts

is

continuous

backplane.

also

Refer

Voltage

+46

-46

+9.7

-9.7 +29

-29

+28

checked

seeks.

to

while The

Table Table

22

the test 3-4.

3-3

drive

points

Tolerance

-2v, +2v,

+Sv

+5v +lv +lv +2v +2v +2v

is

perfolC'ming 128

are

on

the

logic

Table

3-4

3.7

The

peak

measure

jack

and

Refer

3.8

The

RM

if

out

and

tolerance.

PEAK

to

the

voltage

to

Table

RM

adapter of

tolerance.

Voltage

+5v

-5v

TO

PEAK

peak

ripple

3-5

ADAPTER

voltage

RIPPLE

should

peak

test

for

jacks

peak

Voltage

+46

-46 +20

-20 +28

VOLTAGE

levels

Refer

Test

to

peak

LEVELS

Point

A2JD94-04A A2JD94-0lA

be

checked

ripple

on

the

to

peak

Table

ripple

3-5

should

to

Table

voltage

power

Ripple

4.5v

1.0v

also

3-6

Tolerance

+.05 +.05

using

supply

voltage.

be

checked,

for

voltage,

volts volts

an

oscilloscope

between

control

the

and test

to

ground

panel.

adjusted

points,

Voltage

+Sv

-lSv

Table Test Pin

Point

AA2

AB2

3-6

Tolerance +4.9v

-14.8v

to

+5.2v

-l5.3v

23

4.9

HEAD

LOAD

SEQUENCE

PROBLEMS

This

section operation speed. braking. they

will

4.1

4.

2

4.3

after

It

also

If

the

be

called

HEADS

DO

REVERSE

concerns

the

start

includes

possible

out.

NOT

CURRENT

problems

switch causes

LOAD

the

AFTER

NON-VDE Head Load Swi

Servo

Power

tch

Amp

K7 Voice

HEADS REVERSE

Coil

DO

IS

NOT

OK,

LOAD

FOR

AFTER

BOTH

A20, A07, A12, A08, Al7

Servo CARRIAGE

HEADS

Power

HITS

STAY

Amp

FORWARD

OUT

ON

STOP,

PACK,

during

is

pressed

head

are

unload

different

UP

TO

NON-VDE

CB4

FOR

BOTH

TO

SPEED

AND

TRIPS,

NON-VDE

the

actual

and

the

sequence

for

TIME

motor

and

NON-VDE

OUT

VDE Head Load Swi

Servo

Voice

VDE

Power

Coil

TIME

DRIVES

FAULT

AND

OUT

LIGHT

VDE

head

is

spindle

and

AND

tc

h

Amp

AND

ON,

DRIVES

load

up

to

VDE

NO

HOLD

AND

4.4

4.5

4.6

*

A06, Servo

Al9,

Power

CARRIAGE

AND

HEADS

A2((J

Servo HEADS

(INNER

A((J6, Servo

HEADS

NON-VDE

Servo

Power

LOAD,

GUARD

Al9,

Power

LOAD,

AND

Preamp * Head *

Disconnect Then Check 25B.

OK,

it

If

is

A20

Amp

HITS

FORWARD

RETRACT,

Amp

HESITATES,

BAND),

A20

Amp

BUT

VDE

A3TBI-I

for

not

OK

one

of

FOR

THEN

DRIVES

(yellow

.3

-1.5vpp

it

is

the

STOP,

BOTH

AND

THEN

BOTH

FAULT

NON-VDE

UNLOAD,

wire)

servo

the

Servo

following.

LIGHT

AND

CREEP

FAULT

and

data

Preamp

TO

AND

LIGHT

load

at

or

ON,

VDE

THE

VDE

A18

THEN DRIVES

FORWARD

DRIVES

ON,

heads

Pins

Servo

CB4

TRIPS

EOT

FOR

BOTH

manually.

23B

and

Head.

If

A18,

Al9,

A2((J

24

4.7

RTZ

IS

NON

FUNCTIONAL,

POR

BOTH

NON-VDE

AND

VDE

DRIVES

4.8

4.9

4.19

4.11

A96, A07, UNABLE

VDE A96, UNABLE

(8),

TO

DRIVES

A12,

TO

FOR A06, A12, BEADS

LIGHT

DO OFF,

A08, A07, Start

Switch

YFN DRIVE

Open

MOTOn

thermal

K8

CR1-CR4

Bad

connection

Al9,

,sEEK

A20,

FORCE

BOTH

A20

NOT

PACK

A20,

BRAKE

A29, A02,

TO

CLYINDER

A02

A

NON-VDE

,A02

UNLOAD

SPINNING,

A17

INOPERATIVE,

resistor

to

motor

SEEK

AND

WHEN

in

A12

1466

ERROR

VDE

DRIVES

START

POR

SWITCH

BOTH

NON-VDE

CB3

connector

(8),

WITH

P/J7

POR

FTU

TO

IS

TURNED

NON-VDE

DRIVE

BOTH

CYLINDER

AND

ONLY

NON-VDE

OFF,

VDE

START

DRIVES

AND

1467

4.12

DRIVE

FeFN CCBN Bad

Connection

Bad

Connection

MOTOR

ModulE~

BRAKE

Module

INOPERATJrVE,

to

Brake

to

Motor

P8/J8 P7/J7

VDE

DRIVE

ONLY

2S

5.0

Oi

sk

dr

amplitude abnormal loading,

rected

immediately

failures

base

quent

corruption

power

POWER

ives

are

analog variations vol

tage

from

supply

AND

POWER

susceptable

signals

in

spikes,

before

abnormal

with

no

used

the

input

excessive

any

line

apparent

failures.

PROBLEMS/RM

to

power

in

problems

the

power

surges

intermittent

power

have

error

ADAPTER

due

Read/Write

such

or

as

sags

failures

symptoms

bit

indications

to

the

circuit.ry.

mismatched

should

occur.

of

long

low

be

Typical

term

and

level

Any

phase

cor-

data

fre'-

5.1

This

signal respective the

CPU. Massfail down

of

evident

MASSBUS

RH7~

RH78~

-

Any

- Check

supply

5.2

The

AC

RM

Unsafe,

MASSFAIL

is

RH

controller

Under

signal

the

if

or

in

normal

is

disk

there

the

Unibus

the

(#5).

In

order

function older must out.

LO -UNSAFE,

Adapter

if

low

AC

sent

to

operation

received.

subsystem.

is

a

RM

Adapter.

device

+5

volt

to

properly,

8780

be

configured

BIT 14

-15 is

detected

volt

all

to

drives

indicate

problem

that

generates

DC

have

MASSBUS

OF

regulator

for

the

system

Massfail

Non

Exlstant

with

Lo

signal

NOTE

the

terminator

correctly:

RMERl

the

on

the

a power

provides

the

Massfail

AC

Lo

at

Massfail

jumpers

asserts

RM

Adapter

MASSBUS

problem

will

Drive

could

J3

signal

on

modules

WI

in,

AC

power

an

errors

of

the

W2

Lo,

power

from

in

fail

orderly

signal

be

at

7l~~

which

source.

the

will

on

fault.

their

RH

as

the

shut

the

power

sets

or

be

If

the and proble.

supply.

5.3

DC

indication.

examined

Lo

DC

does

LO

but

not

All

the

flag the

RH

fault

lite

unsafe

is

wi

an

RM

Adapter

registers

bit

th

error

are

NOTE is

not

the

bit

registers

OK

26

on

is

RM

except

in

set,

adapter

but,

the

then

does

are

for

drive

the

power

give

read

CS1.

as

an

ones

obvious

when

6.g

ERROR

BITS -CONTROL

AND

ERROR

REGISTERS

This to

section

use

would When

trying status defective

first

to

start

8

scope

and

error

it

is

STATUS

1.

2.

3.

Multiple parity

RMER2 bit

all

in

bits

for

trouble-·shooting.

cause

logic

components

and

easiest

you

and

logic

obvious.

AND

ERROR

Drive M7686 -

A0l,

bits

error

is

set;

RMAS;

when

gives

the

er~or

to

locate

is

functioning

off

in

meter

should

LOGIC

Interface

drive

A02, will

occurred.

bit

isolating

the

error and/or a

are

to

replace.

the

~,ill

be be,

INCLUDES

status,

A17 -

be

set

15

(ATA)

15 (SC)

definition symptom.

problem,

properly.

listed

right

needed

for

Cables drive

when

Bit

03 (PAR)

and

an

error

Also

it

in

These

area

to

most

- A & B

drive status,

an

error

bit

14

condition.

with

given

is

assumed The

order

component

but

test

isolate

cases,

errors

drive

occurs.

of

RMERI

14

(ERR)

(TRE)

suggested

are

the

list

of

most equipment

further.

considered

errors

and

of

RMCSI.

components

that

of

the

possible

likely

listings

EXAMPLE:

bit

RMDS;

corresponding

~iagnostics

which

error to

are

such

The

last

status

and

fail

given

as

unless

A

03 (DPE)

Be

aware

of

Table be

used

when

RM

ADAPTER

6-1

gives

to

relate

troubleshooting

ERROR ILF ILR

RMR

PAR FER & HCRC FER

WCF

ECH

&

DCK

HCE

Error

with

FTU

the

NA NA

Address NA

NA Address Address

and/or

errors Log

FTU. Table FTU

to

or

Diagnostic

6-1

ERROR

and/or

-

Address

subsystem

Read

because

errors.

printouts

of

head

misselect

of

misposition

This

to

can

errors

SKI

27

RM

ADAPTER

ERROR

Table

FTU

6-1

(Cont)

ERROR HCE & HCRC HCRC AOE

IAE

WLE

DTE

OPI UNS & DVC

DCK

DPE DVC LBC

Address Address

NA

NA Fault

Read

after

and/or Sector

Fault

Address NA

Fault

Address

and/or and/or

Read

Count

and/or

write

or

Read Read

Address

no

Read

error

FTU

error,

Run

Address

hangs

6.1

6.1.1

LSC IVC

OPE

SKI BSE & HCRC

CONTROL

Control

13

BIT

BIT MCPE RM

RH.

Bus

17

indicates

while

Reg

ister

It

REGISTER Register

MASSBUS

read

that

is

the

NA

No

Plug

No SKI

Address

CONTROL

that

ing

a

an

does

Attention

Uni t Ready

No.

doesn't

Un

it

Select

Address

and/or

PARITY

parity

RM

reg

not

error

ister

use

Register.

equal

Read

ERROR

occurred

to

the

par i ty

switches

(MCPE)

RH.

on

transfer

on

ThelC'e

- :RH70

-

RH780

the

Control

to

is

one

the

28

THINGS

TO

KNOW

WHEN

TROUBLESHOOTING

MCPE

ERRORS

1.

The number on

installations)

following:

A.

Check

M5904's'

flat

M5904.

B. Check

(Zero

on

the

C.

Visually

cables wear.

D.

A

visual

is

necessary.

E.

Inspect broken tors

give

which

intermittant

one

the

RH70

cable

This

the

Insertion

bottom

inspect

for

inspection

the

or

cracked

have

cause

of

seems

connections

(Berg

connector).

sometimes

effects

connections

Force)

rear

of

the

damage,

kinks,

massbus

resistor

broken

parity

MASSBUS

tC)

be

in

of

shorts

Data

of

Bits

BC06R

connector

the

cabinet.

cable

breaks

of

all

terminator

or

cracked

errors.

Parity

the

BC06R The

against

00,

located

insulation

and

ZIF

connector

for

packs.

Errors

cabling.

cables

drain

the

06,

or

cables

other

bent

MASSBUS

resistor

(especially

o

Check

wire

etch

12.

at

the

on

the

on

the signs

mating

pins,

termina-

packs

at

on

panel

BC06R

pins

will

the

the the the

ZIF

of

and

2.

3.

To

isolate

features

A. The

that

maintenance

disable

B.

In

multiple move Remember,

times" otherwise, non-e,cistant

isolate.

C.

If

an

drives drives

MASSBUS

drives

MASSBUS specification

the feet

must

flat

and

be

160

llsed

calculate

Manual.

solid

will

MCPE

help

switches

all

transceivers

the

RM05

terminator

the

and

at

installations,

MASSBUS

least

erroneous

drives.

eight

will

load

will

Cable

drive

operate

fail

of

see

Length

clearly

intermittently.

the

states

(BC06R-XX) and

the

feet,

for maximum

respectively.

mixed

problems,

out.

on

in

order

must

one

parity Use

system

properly,

last

load

as

Specification

that

round

flat

length.

on

the

that

to

be

dr

ive

errors

the

is

MASSBUS

in

dr

ives.

a

terminator.

the

(BC06S-SS)

A

and

See

round

the

there

M5922

bus,

break

isolate

terminated

enabled

use,

but

This

The

maximum

linear

cable

MASSBUS

are

and

for the

the

on

will

TDR

the the

is

several

M5923

that

MASSBUS

problem.

the

occur

Tester

first

last

due

first

The

MASSBUS

lengths

cables

are

interpolation

systems

TDR

will

drive.

at

bus,

four

to

four

120

Tester

and

all

to to

the

for

to

29

Diagnostics

11/70 CZRMP CZRMQ

CZRMU Drive

Not

Drive

RH70

~es

M5994

M8152

TRE

If for

no

RH70 M81S1 MS904

6.1.2

Diskless

2

Performance

Caused

is

not

set

reason.

(B)

Control

Exerciser

and

Register

no

errors

VAX EVRDA EVRAA

RM

Diskless Reliability

Adapter Terminator Cables M5922,

M5923

Grounds M7686

RH780

M8278 M9041

are

present

RH780 M8278

or

Jumpers

attention

or

(Wl

and

is

W2)

set

6.1.3

BIT 14 TRE

indicates controller OR-ing error

TRANSFER

or

of

DLT,

bit

in

the

one

registers.

Control

Register BIT 15 SPECIAL SC

bit of

or

for

flag

indicates

being

a

normal

the

completion

either

for

something

that

set

by

condition

a

normal

Diagnostics

an

PE,

(TRE)

error

Drive.

NED,

ERROR

that

Disk

WCE,

or a combination

CONDITION

an

error

MCPE.

(SC)

Also

such

of

a

positioning

or

abnormal

happened.

Depending

condition,

occurred

This

NEM,

of

condition

attention

as

the

condition,

in

error

PGE,

all

condition

MXF,

three

exists

will

drive

cloming

command.

on

all

including

either

MDPE

drive

thru

set

SC

it

the

is

the

because

on

could

is

just

DECXll

the

or

error

TRE

line,

set

error

RH

an

a

31

DRIVE

Normally

thru

RM

the

ADAPTER

Check problem

M7686 MS922,

Check section

If

no

errors

RH70

M81S1

M81S0

If

TRE

for

no

or

abnormally

attention

for

error

if

attention

MS923

Diagnostic Drive

the

of

error

this

are

is

not

reason.

bit.

bi

ts.

registers

manual.

I

present

set.

and

is

the

Check

If

set.

no

drive

none

and

errors

going

for

set

refer

RH780

M8278

are

error

these

All RM

Adapter

present

on

or

conditions.

modules

including

to

the

offline.

DECXll

specific

or

attention

may

will

cause

error

set

is

SC

the

bit

set

RH70 M81S1

MS904

6.2

6.2.1

THINGS

1.

(B)

STATUS Status BIT.88

BIT 88 An

MOPE

synchronous

command.

Write

Check

anywhere

TO

KNOW

The number

on

installations)

following:

REGISTER

Register

MASSBUS

indicates

(data)

(Read,

Header

:from

WHEN

TROUBLESHOOTING one

the

cause

DATA

a

bus

Read

and

RM

Adapter

seems

RH780

M8278

PARITY

parity

lines

Header

Data).

of

MASSBUS

to

ERROR

error

and

to

MDPE

be

in

(MDPE)

during

Data,

The

the

error

RH.

ERRORS Parity

the

was

a

Errors

cabling.

-

detected

read

Wr i te

could

(especially

RH70 RH780

on

type

Check

be

caused

Check

the

data

or

the

31

A. Check

M5904's

flat

M5904.

the

RH70

cable

This

connections

(Berg

connector).

sometimes

effects

of

shorts

Data

the

Bits

BC06R

The

against

00,

drain

the

06,

cables

wire

etch

or

12.

at

on

the the the

2.

B. Check

(Zero

on

the

C.

Visually cables

wear.

D.

A

visual

E.

Inspect broken terninators packs

To

isolate

features

A. The

disable

B.

In

multiple

move

Remember,

times, otherwise, non-existent Tester.

the

connections

Insertion

bottom

inspect

for

damage,

inspection

the

MASSBUS

or

which

will

give

solid

that

will

maintenance

all

transceivers RM05

the

terminator

the

and

at

erroneous

Force)

rear

of

the

kinks,

cracked

have

intermittent MOPE

help

switches

installations,

MASSBUS

least

drives.

of

connector

the

cable

of

all

terminator

resistor

broken

problems,

out.

on on

in

order

must

one

parity

Also

BC06R

cabinet.

insulation

breaks

ZIF

connector

parity

the

that

to

be

dr

ive

.errors

use

cables

located

and

other

for

packs.

or

cracked

errors.

there

M5922

bus,

break

isolate

terminated

enabled

the

at

on

mating

bent

are

and

M5923

for

that

the

MASSBUS

the

on

will

MASSBUS

the

panel

the

BC06R

signs

pins.

p:lns,

MASSBUS

resistor

several

drive.

problem.

at

the

occur

ZIF

of

and

will

and all

bus,

to

TOR

3.

c.

If

an

drives

drives MASSBUS

see

the

MASSBUS specification the feet

must

flat

and

be

used calculate Manual.

eight

drive

will

load

Cable

fail

of as

Length

clearly

(BC06R-XX)

160

feet,

for

the

maximum

system

operate

intermittently.

the

last

a

terminator.

Specification

states

and

round

respectively.

mixed

flat

length.

32

is

properly,

drives.

that

(BC06S-XX)

and

See

use,

in

the

A

linear

round

the

but

the

This

The

first

maximum

cables

cable

MASSBUS

first

last

is

due

to

four

The

MASSBUS

lengths

are

interpolation

systems

TDR

Tester

four

the

will

for 120

to

Diagnostics 11/70

CZRMQ CZRMN CZRMO CZRMU

Drive

DeL

~les

M7685

M5922,

RH70

CaE'res

M5904 M8l50

6.2.2

Diskless

2

Functional

Functional Performance

M5923

Status

Register

BIT 99 MXF

indicates

transfer

what

happens condition. transfer respond MASSBUS.

2,

3

Exerciser

MISSED

that

command wi

is

The

command

to

it

by

TRANSFER

the

thin

three

first

and

one

the

sending

VAX

!VfiDA

EVRDB EVRAA

Diskless

Functional

Reliability

RH780

MS·277

M904l

(MXF)

drive

650

condi

did

msec

tions

being

RM

Adapter

"Occupied"

for

that

not

may

the

did

back

respond

an

RH70.

cause

RH

not

to

Basicall

this

decoded

decode

the

RH

a

via

data

error

Data

it

or

the

y

The the

sector best other

get

The

first

drives

because four

the packs. addition

Diagnostics

11/70 CZRMQ CZRMN

CZRMO CZRMU

Diskless Functional

Functional

Performance

second

MASSBUJS

wi

th

thing

Diagnostics

MXF

thi

errors

rd

four

reason

drives

will

of

the

drives

MASSBUS

This

to a missed

2

3

reason

was the

to

not word

do with

fail

MASSBUS

will

see

terminator

will

is

that

"EBL"

rece i ved

counter

is

scope

errors

other

is

that

will

operate

for

are

error

in

intermittently.

load

the

of

load

for

give

you

transfer

VAX

!V'R"DA

EVRDB EVRAA

33

from

in

the

cleared

"Occupied"

present.

conditions.

an

eight

properly,

The

the

last

as

a

terminator.

broken

intermittent

error.

Diskless Functional

Reliability

the

RH

(run

or

RM

at

the

cleared).

or

It

is

dr

ive

but

reason

drives.

cracked

parity

Adapter

end

"EBL"

possible

system,

the

last

being

The

Also

errors

via

of

the The

if

the

four

first check

resistor

no

to

is

in

Drive Not

Drive

Caused

RM

Adapter

ItlXSSBOS

Cable

MS922, MS923

M7686

M7684

RH70

CaDre

MS604-B

or

M81S1

6.2.3

Status Bit PGE

to

performing

tr

maintenance

the

transfer

Diagnostics

11/70 CZRMQ CZRMN CZRMO

Diskless

Functional Functional

Drive Not a Drive

C

18

indicates

initiate

ied

RH7S0

Problem

Register

PROGRAM

one.

to

load,

mode

an

command.

2

3

for

a

data

during

attempt

ERROR

the

In

addition

MAP,

RH780

M8278

M8277 M9041

(PGE)

RH70 & RH7S0

transfer

VAR,

a

data

to

VAX EVRDA EVRDB EVRAA

operation

for

or

transfer

initiate

Diskless Functional

Reliability

that the

byte

software

while

RH780,

counter,

command.

a

unacceptable

attempted currently

the

program

or

Also

set

for

data

RH70

MSISl

6.2.4

This

1.

2.

3.

Status Bit NEM

and

register

problem

Software

Defective Hardware

detection

Register

11

sets

the

can

NON

EXISTANT

when

the

memory

is

non-existent.

be

caused

Memory

problem

logic.

MEMORY

controller

address

by:

Stack

with

RH780 M8278 M8276

specified

the

34

(NEM)

is

Bus

performing

in

Address

a

DMA

the

Bus

Register

transfer

address

or

error

Diagnostics

11/7~

DECEX RH70

MS151 MS152

6.2.5

1.

2.

3.

11

Status

BIT

12

BIT 18 NED

in

Sets

a

Essentially "Transfer" transmi

could

Mass Drives

M5923.

Drive

Register

NON

when a

drive

ttfed

cause Fail

are

select

EXISTENT

which

what

on

the

over

NED.

is

asserted.

disabled

lines

DRIVE

program

does

happens

MASSBUS

the

MASSBUS

by

or

VAX

RH780

MS276

M8275

reads

not is

See

the

Logic

(NED)

or

exist

that

1.5 from

para.

enable

is

defective.

writes

the

Usee

the

5.1 switch

or

RH

a

is

did

after

RH.

RH70

RH780

drive

register

.powered

not

received

"Demand" was

Several

on

the

M5922

down.

things

or

4.

5. Diagnostics 11/70

CZRMP

Diskless

Drive Power

on?

RH70

ra"6les

M5904

(C)

MS151 MS153

MASSBUS RM

Adapter,

DEV

Selected

1

failure

or

of

"Demand"

MASSBUS

neg~ted

and

cabling.

in

RM

Adapter.

VAX

ERVDA

RM

~

Diskless

Adapter Adapter

MASSBUS

M7686

M5922, M5923

RH780

A8278

M8276

or

not

cables

"Transfer"

powered

in

on

the

RH,

35

Diagnostics DECXll

Drive Not

a

Drive

RH7e

M8T52

M81Sl

Status BIT

13

PE

indicates

the

controller

command.

Problem

Register

PARITY

a

ERROR

parity

is

(PE)

error

performing

from

memory

a

Write

is

detect~~d

or

Writ.e-Check

while

6.2.7

Areas

Status BIT

BIT

weE operation corresponding

The

s

tat with inc

If

changed

Data

that

1.

MASSBUS

parity

2.

Data

Register

14

"9

sets

WRITE

&

1"

when

and

thing

us

weE

0 r r e c t 1 Y •

weE

0 f

is

to

the

set,

set

on

was

changed

could

cause

-

would

Transce

CHECK

the

a

word

be

aware

d a t a c h e c k

the

In 0 the

alone

the

parallel

from

WCE.

if

an

not

iver

ERROR

controller

word

in

memory.

word

'r

wo

one

the

even

number

detect

in

RH.

on

of

on

err

r d

s,

of

transfer

RM

this

(WCE)

is

performing

the

disk

troubleshooting

0 r

bit.

on

the

ig

nor e th e WC

two

things

to

Adapter

of

bi

ts

problem.

does

If

Disk

the

to

were

a

not

WCE' s is

Da

taCh

itself

E •

happen.

RM

Adapter

memory.

effected

- RH70

- RH780

write

match

e c k

iss

was

Data

or

check

the

e t

read

was

the

since

3.

Incorrect

Exerciser.

4.

NPR

timing

Data

is

Patterns

bad.

-

11/70

36

on

Pack

when

running

Performance

Diagnostics

11/70

CZRMQ

CZRMN

Diskless

Functional CZRMNO CZRMU

Performance

Drive

Could

RH70 M81S0 MS904

be

Cables The

processor

6.2.8

2

Functional

if

DCR

could

Status

Register

BIT 15

BIT

11

DLT

Sets

word

a

during read/write transfer.

2

3

Exerciser

set

also

DATA

when

a

LATE

the

write

check

cause

ERROR

controller

operation

VAX

!VIrDA

EVRDB EVRAA

RM

M7685 M5922,

Cables

RH780 M8277

M8275

WCE.

(DLT)

Diskless Functional

Reliability

Adapter

M5923

is

or

accept

at

the

unable

time

a

to

data

the

- RH70

- RH780

supply

word

drive

a

data

during

demands

hardware error.

Diagnostics

11/70

CZRMN CZRMO CZRMU DECEX

Functional Functional Performance

11

Drive

Not

Drive

RH70

R'ITS"1

M8150

6.3

ERROR

Usually

Caused

REGISTER 1

DLT

indicates

problems

2 3

Exerciser

with

a

severely

"Sync

VAX

I\m'DB

EVRAA

RM

Adapter

A"7685

M5922, RH780

M8277 M8276 M9041

overloaded

Clk"

can

Functional Reliability

M5923

also

Bus

cause

but

the

37

6.3.1

Error

Register

1

Diagnostic

11/70

CZRMP

Diskless

Drive Not

Drive

See

Parity

6.3.2

BIT

selected. faul RH,

II

BIT

ILF

ind

into control error)

Caused

Error

81

ILR

indicates

ts-can and

ILLEGAL

icates

the

control

bus

of

RMERl

1

Register

ILLEGAL

MASSBUS

that

to

cause

will

1

REGISTER

a

Normally

cause

logic.

FUNCTION

an

invalid

register

this

show up

VAX

!VR'DA

EVRDA

RM

M7686

Software

register

a

software

the

error.

(ILF)

function

(CSI).

error

but

intermittently

Diskless Diskless

Adapter

(ILR)

address

They

It

is

usually

greater

flag-but

are

the

code

possible

bit by

itself.

than

several

error

was

03

loaded

for

the

(parity

17

was

logic

detect,

Diagnostics

11/70

CZRMQ CZRMQ

Diskless Diskless

Drive Not

Drive

RH70

M'S904

6.3.3

Error BIT

RMR

register,

Register,

1

2

Caused

Register

12

indicates

1

REGISTER

except

when

the

VAX

!'mDA

RM

M7686

M5922,

Terminator

RH780 M8278 M904l

MODIFICATION

that

the

-GO-

an

attempt

Attention

bit

38

Diskless

Adapter

M5923

REFUSED

was

set.

(RMR)

was made

Summary

and

to

write

Maintenance

a

Diagnostics

11/70 CZRMP

Diskless

Drive

Not

Drive

RH70

Jf5904

6.3.4

Diagnsotics 11/70

CZRMP CZRMQ

CZRMM CZRMN CZRMO

CZRMU

Error BIT PAR

an Normally

Bus

if

Diskless Diskless

Functional Functional Functional Performance

Caused

Register

03

indicates

RM

register

lines

Bit

03

1

2

1

PARITY

indicates

or

(DPE)

1 2 3

Exerciser

1

a

or

that

ERROR

Parity

when

even

of

RMER2

VAX

'!'\m"DA

RM

Diskless

Adapter

Wi686

M5922, M5923 RH780

M8278

(PAR)

error

Bit

parity

is

VAX

EVRDA EVRDB EVRAA

occurred

03

(DPE)

was

set.

Diskless Functional

Reliability

while

of

RMER2

detected

is

on

writing

set.

the

Data

into

Control

Bus

Drive

Not

RH70 M5904 M8152

6.3.5

Drive

BIT FER

used

RMOF.

Caused

Error

Reg:lster

04

FORMAT

normally

or

t,he

1

ERROR

indicates

software

RM

Adapter

COntrol

M5922, M5923

Cables

Terminator

Data

Bus -

Rli780 Cables

M8278

(FER)

that

did

39

the

not

condition

Bus - M7686

See

bit

wrong

pack

the

03

of

format

Format

RMER2

is

being

Bit

in

Abnormally

dropped

isolate

Diagnostics

but

the

it

means

HCRC

problem

bit

will

as

12

indicate

a

read

of

error.

the

this.

first

See

header

If

HCRC

OCK

•.

word was

is

set,

11/70 CZRMP

CZRMQ

CZRML

CZRMM

CZRMN

CZRMO

Diskless

Format

Functional Functional Functional

Drive Pack If

see

6.3.6

Format

caused

DCK

Error

BIT 05

WCF command,

received to

Diagnostics

11/70

CZRMQ CZRMN CZRMO CZRMU

Diskless

Functional Functional Performance

1

2

1 2

3

by a read

Register

WRITE

indicates,

that

at

the

RH

2

2 3

1

CLOCK during

the

from

RM

the

Exerciser

VAX

IVR'DA

EVRDB

EVRAA

RM

M1685

M7686

FAILURE

a

Write

MASSBUS

adapter

RM.

VAX

!V'R'DA

EVRDB EVRAA

Diskless Functional Reliability

Adapter

(WCF)

Header

signal

after

Diskless Functional

Reliability

"Wr i te

a

"Sync

&

Data

Clock"

or

Clock"

Write

was

\~as

Data

not

sent

Drive Not

Dr

ive

Caused

RH70 M5904 - C

6.3.7

Error

Register

BIT 06

ECH

non-ECC

of

never

indicates,

RMER1

be

ERROR

correctable

during

set

1

CORRECTION

at

error.

a

uncorrectab1e

without

RM

Adapter M7686 M5922, M5923

RH780

M8277 M9041

HARD

the

end

Normally

DCK.

See

40

(ECH)

of

DCK.

an

ECC

error

set

error.

correction,

with

Bit

ECH

15

should

a

(DCK)

Diagnostics

11/70

CZRMP

CZRMQ Drive

EcR

alone

caused.

6.3.8

1.

Diskless Diskless

not

See Error BIT

07

HeE

three

The are

a.

1

2

drive

DCK

Register

HEADER

indicates,

mis-compares

Head

crash

errors.

Cylinder

not

equal

Servo SKI

mis-position

errors.

1

COMPARE

without

occurred.

may

also

Address

indicating:

VAX

IVR"DA

RM

Adapter

A"7685

M7686

ERROR

HeRC,

NOTE

be

register

-

this

Diskless

(HCE)

FME,

a

cause

and

is

usually

or

the

of

BSE,

HeE

first

associated

that

header

one

of

word

with

2.

3.

Diagnostics

11/70

CZRMP CZRMQ CZRMV

CZRMU

Gives

*

Diskless Diskless Extended Performance

header

b.

Incorrect

c.

of a.

b.

c.

d. The

The

Logic Track

the

second

Head

Incorrect

Head

Logic

Sector

portion

indicating:

a.

Incorrect

b.

Logic

1 Drive

info

pack failure Address

register

header

mis-selection

pack

plugs

failure

switched

-

Address

of

the

second

pack

failure

-

*

on

HeE's.

format

RM

Adapter

are

-

format

RM

Adapter

register

format

RM

adapter

VAX

!VR'DA

EVRDB

and

not

equal

Drive

header

Diskless

Functional

the

indicating:

logic

and

word

track

the

address

sector

are

not

portion

address

equal

41

Drive

RM

MIS-POSITION M7684

Servo A12,

A19, A18,

Servo

Velocity

Servo

Carriage

Arcing

adjustment

A~8,

A2~,

A92, Preamp Power

Amp·

Transducer

Head/Servo

Way

Coil

or

A~7

A~6

Head

Bearings

Flex

Crash

Strip

Adapter

HEAD

SECTOR

NO

6.3.9

MIS-SELECT M7684

A~2,

E~5

Head

A~l,

Plugs

A~8

Switched

MIS-SELECT

A~6,

May OPI

A1~,

be

associated

and

DTE

A~l,

Errors.

A~2

with

MIS-COMPARES

Error BIT 98

HeRe

compared

set. set.

without;

HeRC indicates

Register

HEADER

indicates

bit

When

If

solid

HCE,

set

wi

a

1

CRC

a

is

picked

an

uncompared

HCRC's

BSE,

th

the

problem

(HCRC)

read

OR

FER,

other

with

or

M7684 M7685

M7684 M7685 M7686

error

dropped;

bit

are

the

header

the

in

is

picked,

present

CRC

er

read

the

HCE,

or

logic

ror

logic.

header.

BSE,

just

intermittent

is

chief

bi

ts

and

See

or

HCRe

DCK.

When

FER

may

will

suspect.

random

a be be

HCRC

DCK

Diagnostics

11/7~

CZRMP CZRMQ CZRMM CZRMN CZRMO CZRMV

*SWR

Diskless

Diskless Functional Functional

Functional

Performance*

= 3;

Size

1 2

1 2 3

- 156

Drive

See

DCK

VAX EVRDA EVRDB EVRAA

RM

Adapter M7685 M7686

42

Diskless Functional

Reliability

6.3.18

Error

BIT

Register

99

1

ADDRESS

OVERFLOW

ERROR

(AOE)

AOE

the This cause RMDS

Diagnostics

11/70

CZRMP CZRMQ CZRMN CZRMV

Diskless

Functional

Performance

Drive

Not

Drive

Software

operating

6.3.11

Error BIT

ind

icates

last

occurs

a mid

will

1

2

Caused

Software

Register

10

that

address

when

transfer

also

2

be

1

ILLEGAL

a

data

of

the

word

seek

set.

ADDRESS

transfer

pack

count

beyond

VAX

!VTfDA

EVROB EVRAA

RM

Adapter

M1685

M7686

ERROR

was

-

CYL

822,

register

the

Diskless

Functional

Reliability

(IAE)

requested

TRK

last

18,

large

block.

beyond

SECT

enough

LBT

31. to of

Diagnostic

11/70

CZRMP

CZRMQ

CZRMM CZRMN CZRMN

Diskless Diskless

Functional Functional Functional

Drive Not

Drive

Software

Operating

SEE

PARITY

IAE i

nd i ca Cylinder either

register

1 2

Caused

Software

ERROR -6.3.4

tes

or

Sector/Track

1 2 2

that

a

and was

val

ue

address

flagged

VAX EVRDA

EVRDB

RM

Adapter

J.r7685

M7686

beyond

spectrum

when

the

Diskless Functional

the

"Go"

was

max

imum written bit

was

RM05

into

set.

43

6.3.12

Error

Register

I

BIT 11

WLE

locked

Diagnostics

11/70 CZRMP CZRMP CZRMM CZRMN

Diskless Diskless Functional Functional

Drive

A01, A09 Write

6.3.13

Lock

Error BIT 12 DTE

sector.

ind

icates

drive.

1

2

Switch

Register

indicates

WRITE

1 2

DRIVE

This

LOCK

that

1

TIMING

more can

be

ERROR

a

wr i te

VAX EVRDA EVRDe

RM

M7684

M7686 Operator

(DTE)

than

one

attributed

(WLE)

command was

Diskless Functional

Adapter

Error

Sector

to

Pulse three

issued

occurred areas:

to

within

a

wr i te

a

1.

2.

3.

4.

Diagnostics

11/70 CZRMP CZRMQ CZRMM CZRMN CZRMO

CZRMI

CZRMU

Diskless Dskless Functional Functional Functional Formatter Performance

Drive Pack

A06,

Format

A0l,

A1S, A14,

R/W

Head

track

affected

Pack

Sector

with

No

read

Could

Ale, E03,

if

just

formatted

pulse

OPI

errors.

data

be

one

1

2

1 2 3

A13

E04

one

incorrectly

generation

-

Drive.

from

of

the

first

logic.

drive

VAX EVRDA EVRDS EVRAC EVRAA

RM

Adapter

M7687

M7684

M7686

into

signs

Diskless

Functional Formatter Reliability

of

This

the

a

may

RM

Adapter.

head

be

crash.

associated

44

6.3.14

Error

Register

1

BIT 13

OPI

indicates

1.

No

activi

seek

2.

The

Counter

3.

Run for

Diagnostics

11/70

CZRMP CZRMQ CZRMM

CZRMN CZRMO CZRMU

Diskless Diskless Functional

Functional Functional Performance

Drive Sector

Problem

A06, A10, A01,

OPERATION

is

initiated

correct

Sector

of

is

not

a

data

1

2

1

2

3

A02

one

ty

on

sector

Address

the

asserted transfer

INCOMPLETE

of

three

the

by

dr

the

is

register

drive.

within command.

problems:

ive

interface

AM

not

VAX

!'VT{DA

EVRDB EVRAA

RM

Adapter

M7684

M7686

(OPI)

Adapter.

found

does

20ms

after

Diskless

Functional

Reliability

in

wi

three

not

the

thin

equal

399ns

index

-GO-

the

bit

after

pulses

Sector

is

a

-

set

No

Drive

A02, A12, Run

Not

Problem Dr

ive

RH70

M5904

M8152

MASSBUS

Cables

6.3.15 BIT 14

Adapter error.

Interface

A07

Caused

Error

UNS

indicates

Activity

Reg:lster

UNSAFE

power

See

DVC.

1

(UNS)

that

supply

a

AC

or

M7684 M7686

RH780

M8277

M8276 M9941

low

that

condi

the

tion

drive

exists

has

wi

a

Device

th

the

Check

RM

4S

Diagnostics 11/70

All

diagnostics

are

applicable

Drive Only

See

DVC

6.3.16

Causes

if

DVC

Error

BIT 15

OCR

picked With or

than dropped

usually Other logic DTE's.

of

is

Register

error

ECH,

dropped

11

faults

Read

Set

DATA

without

or

dropped

it

indicates

in

bits

or

picked

indicates

symptoms

are;

Errors

1

CHECK

ECH

in

a

row,

were

of

header

ERROR

indicates

the

that

or

picked

in

the

drive

VAX

See

RM

Adapter Low 15

volt

M7686

(OCK)

data

that

or

ECC

drive

read

errors

DVC

if

AC

power

regulator

that

field

more

two

dropped.

field

is

problems

with

set

input

one

within

than

bi

ts

wi

having

HCRC

or

more

a 11

11

bits

seperated Also 11

set

a

and

set;

bits

bit

were

if

a

OCI<.

read

not

problem.

just

recoverable

burst. picked

by

bit

were

more

was

OCK

ECC

1.

2.

3.

4. S.

A good program;

write

with

check,

no

problem When

troubleshooting,

occurring_

TRACK

HIGH

CYLINDERS -indicates

Read

Write

Servo

Pack

EMI

point

is

data

which

-

logic

in

logic

noise

to

remember when

when a

or

data

write

compare

is

in

the

1)

All

matrix,

2)

one

head,

All

consecutively

3) Check

the

check

errors,

RM

things

track

one

for

head

drive

with

header

this

Adapter.

to

note

but

or

even

track,

close

-

crashes.

read

or

using

or

and

strongly

are

different

the

indicates

write

the

without

data

where

pack. same

problem

performance

ECH

occurs

command, (51

indicates

and

a

how

sectors

sector,

scratched

with

pack.

drive.

exerciser

during

or

52),

ECC

logic

erJt'ors

indicates

cylinders

a

are

46

RANDOM FME,

errors

and

CYLINDERS

BSE

occur

are

present

-

indicates

with

the

HCRC

ECC

possible

this

logic

clinches

may

be

drive

at

problem.

the

drive.

fault.

but

If

if

no

HeE,

other

COMPATIBILITY -if on

one occur neccessary.

SERVO

tackle

Diagnostics

11/70 'CZRMQ CZRMN CZRMO CZRMT CZRMV CZRMU CZRML

Drive

1.

Random,

areas.

2.

HCRC

track

only

ERRORS -if

the servo

Di

skless Functional Functional

Compatability

Extended Performance

Formatter

Indicatives:

errors.

on

high

head

high

2

Drive

density

packs

alignment and

SKI

error

1 3

are

low

errors

first.

swapped

may

cylinders,

are

be

present

VAX

~DA

EVRDB EVRAA EVRDC

RM

Adapter

1. Random

gard

low

without

between

required.

carriage

as well

Diskless Functional Reliability Formatter

Indicates:

without

to

high

cylinders

HCRC.

drives

or

and

errors

Also,

alignment

as

data

re-

if

errors,

are

errors

may

be

3.

Surface

4.

Carriage

Drive

Pack

Al4, E03, R/W

A02, A19,

Servo

Servo Spindle

Spindle

*

Al5, E04,

Head

These

Preamp Power

Ground

*

may

Al0 E05,

A20

*

Amp

be

-

*

associated

track

with

2.

No wi

using nostics check

(51

RM

Adapter

M7685 M7687 M7686

A&B

cables

grounded

W+R

OFF

WRT

th

or

CYL

CHK

OCK

er

the

diag-

on a WRT

command

53).

not

Faults

error

ror

47

6.4

ERROR

REGISTER

2

6.4.1

Error

BIT DPE

or

03

of

occur Diagnostics 11/70

CZRMQ CZRMN CZRMO

CZRMU

Diskless Functional Functional Performance

Drive

Not

Drive

Register

93

indicat"es

Write

(PAR)

the

anywhere

Caused

shi

2

3

DATA

Data

of

RMERI.

ft

2

PARITY even

and

parity

Header

reg i ster

from

the

ERROR

(DPE)

was

Command.

Since

in

parity

the

shift

VAX EVRDA EVRDB EVRAA

RM

Adapter

M7685

M7686

M5922, M5923 Terminator Cables

detected

This

is

checked

RM

Adapter,

register

Diskless Functional

Reliability

during

bit

back

a W:rite also at

the

The

to

the

sets

I)PE

Data

Bit

output

could

RH.

6.4.2

1.

2.

3.

4.

5.

Error BIT 07 DVC

indicates Write a.

b. c. d. e.

Head

Write

Input +22 No

Head head.

Write

ON

Cylinder

or

wr i ting.

Voltage

voltage

Register

DEVICE

Fault

winding

Driver

current

volts

write

Select

and

Read

Fault

is

low.

2

CHECK

one

of

shorted

output

to

Write

transitions

Fault"-

Fault

-

46v,

(DVC)

six

drive

-

low.

Write

Driver

with

multiple

-

simultaneous

On

Cylinder

5v,or

fault

replace Driver

low.

Write

head

20v

conditions.

head.

low.

Gate

select.

Write

goes

away

positive"

asserted.

Usually

and

Read

while

or

a

bad

Gate.

reading

negative

6.

Servo seg

uence

Fault

beg

ins.

No

dibits

LED

48

350ms

Indicator.

after

the

head

load

Diagnostics

11/70 'CZRMP CZRMQ

CZRMM CZRMN CZRMO CZRMU

Diskless Diskless Functional Functional Extended Performance

Drive

:Wr i te

Al7, E02,

Head Al7, A0l,

Write

Faul A10, A13, A02, A19, E0l

Select E01,

A02

and

A17, A02, A0l,

On

A14, AlS

Cyl

W+R

Pack

A17,

A02, A19, A08, A20, Servo Servo

Preamp Power

Spindle

1 2

Drive

t

Fault

E0S, E04

Read

A19,

Faul

Fault

E0l,

t

E02,

amp

2 3

A08

A13

A07

A0l

VAX

'!VtrDA

EVRDB EVRAA

RM

Adapter

M7684

M7686

-lSvolt

glitches

Diskless Functional

Reliability

supply

6.4.3

Error

BIT 19

LBC

longer

and Diagnostics 11/70

CZRMP

CZRMQ CZRMN

CZRMO CZRMU

Diskless Diskless

Functional Functional Performance

Drive

A01,

AlS,

Cable

Servo

A10

Register

LOSS

indicates

than

Clock.

1

2

2 3

2

OF

BIT

that

400ns.

CLOCK

Bit

Clock

VAX

~DA

EVRDB EVRAA

RM

R"1l)S7

M7686

49

(LBC)

Clock

is

Diskless Functional

Reliability

Adapter

transitions

derived

were

from Read

absent

Clock

6.4.4

Error

Register

2 BIT 11 LSC

1.

2.

3.

Diagnostics

11/7"

Same

as

Loss

Drive See

LBC

if

6.4.5

Error

indicates

With absent

With address

Wi

th

the

LSC

will

of

LBC

Register

LOSS

the

longer

the

changes.

"Go" Bi t

both

Bit

is

set.

OF

one

~Go"

than

"Go"

be

Clock

2

SYSTEM

of

two

Bit

reset,

3usecs.

Bit

set,

set

set.

CLOCK

problems.

System

there

and

Bi t

VAX

Same RM

as

Adapter

M7684

M7686 M7687

(LSC)

clock

Loss

if

LBC

is

clock

an

di

of

Bit

set

transition

absence

sappears,

Clock

of

LBC

are

Prom

and

BIT 12 lVC

asserted

Acknowledge"

Diagnostics

11/7" CZRMP

CZRMQ CZRMM CZRMN

Diskless Diskless

Functional

Drive

A17,

A"l

Cable

6.4.6

Error BIT 13 OPE

INVALID

indicates

when

1

2

1 2

Register

OPERATOR

indicates

COMMAND

that

any

command

is

attempted.

2

PLUG

the

drive

(IVC)

"Volume

VAX EVRDA EVRDB

RM

M7684

M7686

ERROR

address

Valid"

except

Diskless Functional

Adapter

(OPE)

"Read

plug

or

"Unit

In

is

removed.

Ready"

Preset"

or"

is

not

Pack

5"

Diagnostics 11/70

All

Drive

Address

Al?,

Cable

1.

2.

plug

removed.

Error

BIT 14

SKI

indicates

The

drive

The

Forward while a

re

be

reasons:

a.

A

EOT

b.

into

cylinders

Register

SEEK

is

heads

ing

are

per

mis-position

on

the

Veloc i ty

the

2

INCOMPLETE

one

of

three

unable

or

Reverse

to

supposed

fo

rmed •

occurred

problem

EOT.

0

and

This

822.

VAX

XIT

RM

Adapter

M7684

M7686

(SKI)

problems

do a seek

EOT's

to

EO'I" s could

caused

would

(guard

be

On

and

occur

in

the servo

within

bands)

Cylinder

be

detected

the

drive

to

b.

overshoot

when

S00ms.

were

or

was

below.

of

seeking

logic:

detected

while

for

forced

the

close

seeks three

to

servo

to

3.

Diagnostics 11/70

CZRMQ

CZRMN

CZRMU

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M7686

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word

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11/70

CZRMP

CZRMQ

CZRMN CZRMO CZRML

CZRMU

Diskless Diskless

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Drive Not

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ing

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52

7.0

BOOTSTRAP

PROBLEMS

Bootstrap

by

customers

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tells words) programs Moni

tor.

problems

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into

memory.

off

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53

8.g

COMPATIBILITY

Compatibility

disk

Spec

drives for

the

mechanical

carriage

It

is

between

way

possible

drives

misadjustment

8.1

COMPATIBILITY

Compatibility

read

data

drives.

incorrectly

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usually

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at

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Please

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pack

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drives

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up

customer

his

data

54

8.2

The

INCOMPATIBILITY

following

items

SYMPTOMS

are

causes

of

incompatibility

symp~oms:

8.3

The

1.

2.

3.

4.

S.

following

Head

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Bad

ERROR

compatibility failing

unit

•

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incompatibility.

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matrix

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miscalculation

drives

Alignment

Head~

Current

Pack

SYMPTOMS

is

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type

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9.0

DATA

BASE

CORRUPTION

This

section customer's "crashed", rebuilding This

problem 109gin9 of

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of

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of

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56

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57

informed

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it

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18.8

DRIVE

NOT

READY

OR

DRIVE

HANGS

This

the

by

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drive

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58

11.0

DUAL

PORT

PROBLEMS

This

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logic

section

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TABLE

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3

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CAR.

BIT 9 -------

CAR.

BITS

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7

GKF

CURRENT

LEVEL

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613

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GATE

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DECODE

(-EARLY)

132

X011

DECODE

(-LATE)

132

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DECODE

(-EARLY)

132

1000

DECODE

(-EARLY)

132

WRITE

DRIVER

OLC

DELAYUNE

IN

NANOSEC

o 6

133

12

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l

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MFM

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r-

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SENSE

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FIF

622

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BOARD

133

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DISABlE

WRITE

FAULT

AT

TURN

ON

OF

WRITE

GATE

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CURRENT

FAULT

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MFM

DATA

FROM

DECODE

622

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til

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rt

N

o

~

N

812

-,ev

APPLIED

TO

COlt.

fAOME.R.

CI4P

tC91

RaAYS

K3

SPEED

K4

OAIYE

MOTOR

K5

BRAKE

POWER

KS

HEADS

LOADED

K7

EMERGENCY

RETRACT

K8

DRIVE

MOTOR

ISOLATION

"

fD

~

UI

I

UI

~~

GJtSl

nUl

,...

c:

-::s

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(l)GJ

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....

"""

• 112

81'

Table

15-1

Power

Distribution

Test

Points

NON-VDE:

Print

Reference

*

Warning!

Print Reference

Set

Cross

893

822 792

822 822

822

822 822 822

Set

893 792 804

804

Number

Line

Table

Cross Number

Voltage

15-2

Power

Test

CB2A AlTB2-5

A3PJ4-A

AlTBl-6

A1TB2-3

A1TB2-2

A1TB2-5

A1TB2-1

A1TB2-8/7

Distribution

Test

Point

CB2 A3PJ4-A CB6-5 CB7-6

CB8-7

CB8-8

Point

Test

Points

Signal

Circuit

Pack

+9.7v

-9.7v +20v

-29v

804 CB3-1 +28v

804 894

CB5-3

.CB5-4

+46v

-46v

Signal

Circuit

+29 V Pack

-16

V

+9.7

-9.7

-29

V +28 V +46 V

VDE

Name

Breaker

Cover

Name

Breaker*

Cover V

V

Solenoid

Print

Set

Reference

Table

Cross Number

15-3

First

803 A1TP6,7 803 893 772 792

812 804

804

802

792 PA83-03B 174

173 082

812 082 A08-TPC 074

Seek

Test

Point

A1TP5

A1TP4

J20l-12B PA83-06B

P8-06 J7-2,3 J7-7 J4-F

A17-TPD

A17-TPB

A08-2"7B

P5-22

A07-23B

80

Test

Points

Signal C.B.7,

C.B.6,

C.B.5,

Start

(Start)

Pick

Motor* Motor

Pull Speed Speed Up Pull Pull

Up

NON-YDE

Name +20v

-9.7v +9v

Speed

Pulses

Pulse

to

Speed Speed Speed

to

Speed

to

Speed

Interlock

Relay

Sense

Relay

Delay Delayed

Table

15--3

Pi

rst

Seek

Test

Points

NON-YDE

(Cont)

Print

Set

Reference

2f2J4 2f2J2 063 074

074 072 f2J73

072 064 063 074 2f2J4 f2J74

063

f2J64

063 074

063

194

f2J72 073 f2J72 073

f2J72 f2J74 072 174

174

f2J84 2f2J3

Cross Number

Test

A20-32B

A20-26A

A06-16A

A07-24B

A07-06B

AB7-16A

AB7-1SB AB7-04B

A06-06A AB6-27A AB7-31A

A20-27B

AB7-12B

AB6-3SB

AS6-2SB

AS6-S7B A07-29B

Af2J6-30B

A19-22A

A07-1SA

AS7-03B

Af2J7-17B

AB7-32A .

A07-Al.7

AB7-1SB/97B

AS7-04B

A17-12B

A17-26B

A0S-31B

A20-12A

Point

Signal Forward

Velocity

Forward

Name

Current

Transducer

EOT Heads Loaded Load

+

RTZ Fine Load +

RTZ + Seek Error

Slope

Set

No

Servo

Track

Fault Heads Load RTZ Rev. Fine odd

EOT Enable

Dibits

FF

Enable Heads Load Rev. Fine On ON

T < 1

SEEK ON SERVO

EOT

FF

Position

Cylinder

CYLINDER

END

CYLINDER

READY

SLOPE

READY

UNIT

READY TRIGGER TRIGGER

Enable

+

Fwd

Analog Sense FF

PULSE

EOT

*

WARNING!

LINE

VOLTAGE

81

Table

15-4

Pirst

Seek

Test

Points

VDE

PRINT

SET

REFERENCE

894 894

S94 772

792 823

S9S

895

S92

792

174 173

"82

822 9S2

974

294

202 063

974 974

972 "73

072 964

963 974

294

974

963

964

"63

974 963

194

972

973

972 973

972

CROSS

NUMBER

TEST

AITP6,7

A1TPS

A1TP6

J291-12B PAS3-96B A1J4-4

AIJ7-2,3

AIJ6-7

A1J4-F

PA83-93B

A17-TPD A17-TPB

A98-27B

J4-6 A9S-TPC A97-23B

A29-32B

A29-26A

A96-16A

A97-24B

A97-96B

A97-l6A

A97-1SB A97-94B

A96-"6A A96-27A

A"7-31A

A29-27B

A"7-12B

A"6-3"B

A"6-2SB

A"6-"7B A"7-29B

A"6-3"B

A19-22A

A"7-1SA

A"7-"3B

A"7-17B

A"7-32A

A"7-Al.7

POINT

SIGNAL

CBS, +2"V CB6,

CB7,

NAME

-9.7v

-9v

-Start (Start)

Pick

In Motor* Motor

Pull Speed

Speed

Up Pull Pull Up Up

Forward Velocity Forward

Speed

to

Speed Speed

to

Speed

Relay

Pulses

Pulse Speed

Re

Rele'y Speed Speed

Current

Transducer

EOT

Interblock

Sense

le' y

Delay Delayed

Enable

Heads Loaded

+

Load

RTZ

Fine Load +

RTZ + Seek

Error Slope Set

No

.

Servo

Track

Fault Heads Load RTZ Rev.

Fine

Odd

EOT Enable

Dibits

FF

+

Fwd

EOT

Enable

Heads Load Rev. Fine On On

T < 1

Seek

On

EOT

FF

Position

Cyl

inder

Cylinder

End

Cylinder

Analog Sense FF

Pulse

82

Table

15-4

Pirst

Seek

Test

Points

VDE

(Cont)

PRINT

SET

REFERENCE

074 072

174 174

084 203

*

Warningl

Print

Set

Reference

022 122 122 072 065 073 072 073 125 072 122

073

073 125

072 073 072 203

203 203

204 184

184

072 194

072 064 072 194

194 204

202

063

CROSS

NUMBER

Line

Table

15-5

Cross

Number

TEST

A07-10B/07B

A07-04B

A17-12B

A17-26B

A08-31B

A20-12A

POINT

Voltage

Forward/Reverse

Test

A02-03B

A12-13B

A12-07A

A07-30B

A06-33A

A07-11A A07-04B A07-TPC

Al2-07B

A07-16A A12-13B A07-TPB A07-e3A A07-32A A12-07B A07-A4.B A07-TPC A07-16A A20-A4.4 A20-TPB

A20-Cl.l

A20-2SA

A18-TPF

A18-TPG

A07-e4B

A19-22A

A07-13A

Ae6-21A

A07-17B A19-Cl.1 A19-TPC A20-TPC

A20-32A

Ae6-l6B

Point

SIGNAL Servo

Slope Ready

Un Trigger Trigger

Seek

Signal

+Tie Rev +

On Cylinder Maximum Seek Slope Start

T=0

Fine

Rev +

(Seek)

On Seek

T=0

Direction

Start

Fine D/A Position

(Velocity) Summing Cylinder

Cylinder

Slope Fine

Velocity

Fine

T < 1

Fine

Fine Current On

Forward

NAME

Ready

it

Ready

NON-VDE

Naae

High

Fwd

Cyl & Cyl

Pulse

Address

Error

Seek

FF

Fwd

Cylinder

End

Seek

FF

Converter

Amp

Pulse

PUlse

Position

Integrator

Enable Position

Position

Sense

Cylinder

+

And

VDE

Sel

Blanking

Output

Detect Detect

Analog

Signal

Analog

Sense

Reverse

&

Sr

Fault

EOT

Rdy

A B

Clamp

83

Table

15-5

Forward/Reverse

Seek

NON-VDE

And

VDE

(Cont)

Print Reference

Set

Cross Number

084

073 012

032 012

032 072

125 084

184 184 A18-TPG 062 073 A07-30A 072

Table

Print

Set

Reference

15-6

Cross Number

Write

012 022 032 042

612 E01-TPF

024 022 A02-27B 172

172

613

132 A13-TPD 622

622 E02-0SB 613

013 013

104 A10-30B

053 053 A05-22A 132 132

132

133

133 622

612 fi22

Test

Point

A08-31B A07-llA A0l-07B A03-07B A0l-24B A03-24B

A07-Al.7

A12-07B

A08-31B

A18-TPF A06-TPC A07-07A

Data

Test

Point

A0l-21B A02-03B

A03-21B

A04-03B A02-TPB A17-22B

A17-23B

E0l-TPC E02-08B E0l-TPW

A0l-l0S

A0l-l0A A05-l6B

Al3-A4.0 A13-TPE A13-A2.6 A13-B2.3 A13-27A

A130268

Al3-29A/8 E02-B2.9 E0l-TPX Ee2-TPX

84

Points

Signal

On

Seek Seek Seek On

On

Nalle

Cyl

inder Error Error Error

Cyl

inder

Cyl

inder

Cylinder T=0 Trigger* Trigger* Trigger* Trigger* Trigger· Trigger·

NON-VDE

Signal Pull

Tie

Ch

Up

High

II

and

Name

Enable

Enable Multiple Control

Write

Select

Gate Write/Read On

Cylinder

Read

Write

Write Write Write Write

High

Write Write Wr i te MFM Sync lIs

Enable

Gate

Enable Enable Fault

Data Clock

Frequency

Data Clock Ga

te

Data

Pulse

Gate Compensated Address MFM

Write Current Write

Mark

Data

Toggle

Control

Sense

VDE

Head

Fault

Sync

Window

+

0's

MFM

Sense

PulsE~

Select

(W+R)

Fault

Blanking

Clock

Gate

Data

-Enable FF

Fault

On

-

Table

15-6

Write

Data

Test

Points

NON-VDE

and

VDE

(Cont)

Print

Set

Reference

622

613

623 S62

Table

Pr

int

15-7

Set

Reference

772

SS2

812 8"'3

082

074 S74

S74

072

S72

204 204 082

812 812

813 813

Cross

Number

Unload/power

Cros;s Number

Test

Point

ES2-C2.5

E02-TPC E01J2-S7A TPE

A06-TPC

Off/Emergency

NON-VDE

Test

Point

J201-12B A08-27B

AP1S-22

A1PS-l9

A08-24A

A07-29B

A07-12B A07-06B A07-16A A07-16B A20-B1.1 A20-B1.l

A08-27A A1PS-02

A1PS-04

YFN

A1PS-01

Signal

Write

Nalle

Sense

BRD Write Write

Gate

Fault

Trigger·

Retract

Signal

Test

Nalle

Start

Pull

K7 Unload

Load RTZ

Speed Speed

Power

Heads

Latch

(Load.RTZ) Fine Coarse

(Load.RTZ.Fine)

(Load.RTZ.Fine) Pull

PUll Tr Brake PUll

iac

Motor Motor

Power Latch

K8

FF

Points

Relay

Gate

Gate Relay Relay

Table

Print

Reference

15-8

Set

Unload/Power

Cross Number

772 S82 822 8S4 S82 S74 (')74 S74 (')72 S72 SS2 822

Offl

Test

Point

J201-128

A08-27B

J4-S6

Jl-lS A(,)8-24A AS7-29B AS7-l2B AS7-S6B

AS7-l6A

AS7-l6B

A08-27A

J4-9

Emergency

VDE

85

Retract

Signal Start

Pull

-46

Speed Speed

Emg

Unload

Load

RTZ

Latch

(Load +

Fine Coarse Pull

Pull

Motor Motor

Test

Name

Relay

Ret

Heads

RTZ)

Relay Relay

Points

Vol t

NOTES

86

RMOS

SERVICE ADJUSTMENTS

LOG

I C

tHASS

SID£)

15

(tARO

AND

PROCEDURES

+S

Volt

Head

UlTUUTOR

lAIN

ADJUst

and

-S

1.)

Useinq

seeks

2.)

3.)

4.)

Connect on

logic

on

the Adjus,t Connerct on lOrgic on

the

5.)

Adjust

Alignment

1.)

Install

Connect

2.)

Mount

stabilize.

with

Volt

Adju·s·tments

the

FTU

between

positive

backplane. regulator +5

(ltl')

negative

backplane. regulator

-5

(lt3)

'Procedure

head FTU

CE

alignment

and

pack

CDC

heads

loaded

or

hand

cylinders

voltmeter

Connect

card.

to

measure

voltmeter

Connect

card.

to

measure

meter

on

drive

leads.

recommends

for

at

toggle,

000

and

lead

negative

+5.1

lead

positive

-5.1

card and

allow

that

least

command

Volts

in

logic

the 60

128. to

A2JD94-04A

lead

Volts

to

(+0.05

A2JDJ4-01A

lead

(:to.OS

rack

it

to

pack

minutes.

continuous

to

GND

V).

to

GND

V).

A2.

thermally

be

spinning

87

3.

)

3A. )

3B. )

3C. )

3D. ) 3E. )

If

the

CE

pack

another minutes on

has recommended Read The Set the Command and cylinder Compare Toggle readings right

left

the Or

•••

If

the range, Next, Repeat cylinders between have a problem

drive and

the

been

the servo the Servo

365,for

the

of

of negative

(P) -

amount there

,command a direct

steps

running stabilization

RHOS

head

alignment

position.

continuous

30

004.,

dibit

Positive/Negative

in

both

zero

+75

are value

(N)

exists

3C

004eand

mV

has

which

head

offset

pattern

are

-

of

and

just

drive

alignment

card

seeks

seconds.

positions.

positive

negative.

equals

OFFSET. offset

and

005.,

-75

in

the

been

had

been

you

for

60

check.

Servo/Read-Write

Set

X.l/Xl Command a direct

with

is

a

problem

seek

3D.

~dd

This

mV.

servo

removed from running

are

installing

minutes,

period

flow

to

between

example

switch

Meter

and

readings

The

positive

the

amount

outside

in

to

cylinder

offset

sum

If

it

system.

for

then

is

15

chart.

the

Xl

cylinders

in

this

and

readings

off

the

servo

readings

should

doesn't,

60 it the

minuteso

Pel;'form

switch

position.

360,

seek

book.

record

to

the

value

Offset.

+60

mV

system.

005.& from

range

you

to

'to

the

minus

A •

I '

:

...

: :

....

~

.

.I.~

.

..

:

~

...

::

...

::

...

: :

...

: :

...

::

...

J j I I

(~

..

L.l

~

...

U

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

~

~\

u

..

r

..1

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

~~

.-

.~

..

u

t

.....

-~

\ \

BALANCED

4.)

5.)

6.)

Command a direct carriage Set offset used +150

Xny

is back;up to drive.

DIBIT

S/RW

of

in

mV

head

mia-aligned. the

head

PATTERN

locking switch

all

step

range

that

the

data

alignment.

seek

to

the

read-write

3C.

If

all then is

the

greater

If

any

pack

:

CHI

.

CH2

.

to

cylinder

into

alignment

RW

position.

heads

offsets

alignment

than

head

for

this

Remove

OSCILLOSCOPE

SETTINGS

CHl- 2

CH2-

Time

A- 2uS

B- Not Used

Triggering

INTERNAL

CHl-

by

fall

the

is

+30~mV

arive

alignment

volts/dive

Not Used

Base /div.

Connected Dibits Y on card.

7538

hole. Calculate

the

within the

is

within

+150

before

POSITIVE

to

Test

alignment

Install

same me't.hod

mV

,range

offset,

point

the

splec.

then continuing from

88

•

:

.:

~

:: ::

:~

,.

.uAftO

Olsee

tUAftO

DISK

,..

~

\-

~

I-

ill

•

'-

,..

•

~

-

..

-

•

-

i-

~

L-

1....0

RHOS Flow

Head Chart

t.

APPROX. EQUAL

Alignment

:~~~

M£AD ALIGNMENT SLOT

DISTANC£S

.."

..

ALJ'NMENT

AItM

RMOS

Head

Alignment

Arm

&.

CAUTION ALI'NMZNT CANNOT 10tATlNG DAMAGE

TOOLS

IE

ROTATED

TOOL

MEAD

SLOt

It:AD-AaM

AU'NME.T~"/

TOOL

ON

SOME

MORE

IUOND

OR

DRIYES

TMAN

IIcr

ALIIIMENT

1S0~

MAY

TOOL.

A

..

--

• t:?" 0

& 0

'It

&"

'15·

IEAD CLAM'

SCltw

89

......

-.,-A

...

0

RM

I.'

AIRIAI£

,U17-1

***********************CAUTIONS*************************

These

for

the

attempt

If START the

risk

and

+20Y

of

diabled

the

power-down

blower

will

Caution

the

locking

following

1.)

2.)

3.)

4.)

Head

Alignment

7.)

8.)

9.)

two

notes RHOS a

the

and

head

alignment.

heads

FAULT

lights

breaker. burning the

DC

up

power

resulted

still

'2:

in

may

occur.

Blown

fuse Tripped Blown power Any

of

statioJ\ary

Continued

If

heads

move

(At

the

this Loosen torque

Start

the

cylinder

appear

are

well

perform You

have

the

supply

are voice

in

worth

an

unscheduled both dropped

coil.

should

from a

be

on

if

the

Should

the

DC

an

alignment

circuit

emergency

breaker

amplifier

the

above = Unretracted

CE

pack.

••• 16, 17, servo point

screws them

to

drive

or preamp the

on

the

4 +

and

drive

1/2

753-e

the

CDC

Service

memorizing

before

retrllct

off,

failure

AC

immediately

+5

Volts

Only

you

after check on

power

is

and

the

OK.

retract

track

lock

hole,

transistors

heads

18

require

cover

should

heads

adjustment,

before

be

to

be

adjusted

lbf-in.

command a direct

Manual

you

and

the

turn

run

you've

to

see

AC

line.

occur

c)ff

thE~

thus

if

with

the

on a

proceeding. stopped.)

and

seek

to

The

Force heads

exerted

from cylinder, Prevent

(seek

error)

jumper If

you

on

the

drive

other

10.)

end

Using To pin to

11.)

Install pin slot. to

12.)

Observe the be center servo

heads.

the

resulting

this before use

this

signal

i,

of

the

prevent

in

the

remove

engages

Observe

obtain

offset

brought

the

head

NOTE

during

head

alignment

in

by

connecting

to

ground.

commanding

jumper,

end

while

powered

the

FTU,

up

jumper

select personal alignment

it

before

head

alignment

the

hole

the

a

balanced

the

null

is

less

into

alignment,

servo

will

90

require

alignment

cylinder

an

improper

a

jumper

Be

sure

another

remember the

power

and

on

to

ground. the

injury,

track

commanding

tool

in

the

oscilloscope

dibit

meter

head.

than

and

+

Any

realignment

can

to

an

alignment.

from

to

remove

seek. to

put

is

off.

cylinder,

head

to

place

lock

hole.

another

so

that

head-arm

and pattern. adjust

7S

mV.

you

If

may adjustment

move adjacent

A07-llA

the

jumper

Then,

place

be

aligned.

the

locking

Remember

seek.

the

alignment

adjust

the

head

have

of

all

the

when

the

tool

hE!ad

until

cannot

to

l:e-

thE~

data

DEC RM05 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual