Digital PDFs

EY-DX002-CG-003

October 1981

20 pages

Original

0.7MB

Document:	RL Disk Drive Maintenance Course - Course Guide Oct81
Order Number:	EY-DX002-CG
Revision:	003
Pages:	20
Original Filename:	EY-DX002-CG-003_RL_Disk_Drive_Maintenance_Course_-_Course_Guide_Oct81.pdf

OCR Text

RL DISK DRIVE
MAINTENANCE COURSE
COURSE
A

Part

GUIDE

No.
EY-DX892-CG- 683
Course
No.
EY-DX937-SP-092

2nd

1981

All

Digital

Rights

Equipment

errors

Equipment

which

may

Corporation

appear

this

This
document
was
typesetting
system.

set

manual.

DEC

Digital
PDP

UNIBUS

VAX

Logo

purposes

reSponsibility

DECset-8888

Digital

for

is
any

DECwriter

EduSystem

VMS

DIBOL

MASSBUS

Corporation,

OMNIBUS

OS/8

DECSYSTEM-29

computerized

Equipment

DECsSystem-19@

IAS

and

U.S.A.

DECnet

DECUS

DIGITAL

DIGITAL'S

The
following
are
trademarks
Maynard,
Massachusetts:

Corporation

informational

assumeS

Printed

1979
1981

Reserved

The material
in this manual
is for
Subject
to change without
notice.
Digital

lst Edition,
(Rev),
October

Edition

PDT

RSX

COULSE

Module

TESCING

MAP

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ContentS

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Summary of Module
TopPicS
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COUrSe
RESOULCES
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Personal

ProgreSS

Plotter

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iii

..cccccccccccccccccvvece

AnalySiS

Job

Target
POPULATION
cocccccrccccnvccevcccescccsesccesseses
PYELEQUISICES
Le cecccccercccccvccccesccesesecesesecsce
GOALS
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NON-GOALS
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Maintenance
Philosophy
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COULSE
OLGANIZAtlON
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Service

ODOM

Field

Abstract

OUTLINE

Were

COURSE

GUIDE

ABSTRACT (RnR

This

course

designed

drive

and

all

four

train

field

service

personnel

are

currently

to
perform
basic
maintenance
on
an
RL@1l
or
RL@#2
disk
drive.
The
course
iS
divided
into
two
main
sections.
The
basic
(CORE)
material,
and
the
optional
(extended)
material.
The basic
material
is mandatory.
It contains
all
the
necessary
information
about
the
drive
that
you
need
to
know
in
order
to
service
it.
The
optional
material
contains
the
theory
of
operation
of
both
the
available.

The course
following.

controllers

materials

that

you

that

should

receive

include

Drive

Workbook

- EY-DX826-WB-@082

RL11

Controller

Workbook

RLV11

Controller

Workbook

RLV12

Controller

Workbook

- EY-DX®29-WB-@082

RL8A

Controller

Workbook

- EY-DX®838-WB-992

RLO1/RLO2

Pocket

DECDisk

Subsystem

EH-18955

Field Service Job AnalysiS

Service

the

EY-DX@27-WB-@62
EY-DX@28-WB-@@2

Guide

EK-RL@12-PG-004

Quick

Reference

Card

The following
outline describes
the tasks a field service
engineer
must be capable of performing
when servicing
an RL subsystem.
I.

Install

drive

Cable

drive

the

Set
up
controller

jumpers/switches

Mount

the

drive

Cable

the

controller

into

CG-1

controller

rack

into

the

system

drives

and

Run

diagnostics

1.
2.
3.
4.

Use conversational
mode
Interpret
error printouts
Interpret
normal
printouts
Loop on sub-test of diagnostics

Correct
1.
2.
3.

Read

Perform
A.

III.

adjustment

Signal

preventive

Change
1.
23.
4.

subsystem

drive

Amplitude

maintenance

procedures

filters

Open covers
|
Insert and remove cartridge
Remove
front panel
Use operator's
control
panel

Clean

drive

Perform

Corrective

Make

drive

Toggle-in
shooting

Make

Disconnect

Remove

Belt tension
Positioner
azimuth
Heads

4.
II.

Unit

modules

and

(FRU)

TARGET

POPULATION-

Branch

Field

accessible

manual-entry

voltage

moved

Maintenance

programs

aid

checks

servo

system

replace

the

failing

hand

enable

positioner

Field

and

Support

CG-2

Personnel

Replaceable

Eee

Service

trouble-

PREREQUISITES Sl
eee

Ability
to
program
a
PDP-11 A/V course,
or a
PDP-8 processor
course)

Knowledge

concepts

background
DEC)

courses

magnetic

from

other

of
A/V

basic
disk
drive
concepts
course,
prior
experience,
or

(Magnetic

Knowledge
Principles

CPU
(Introduction
to
PDP-1ll processor
course

DEC)

recording

Recording

using

A/V

companies

hand

principles

course

other

and

courses

(Disk
other

Experience

Experience
in
uSing
a
dual-trace,
triggered-sweep
oscilloscope
(Similar
to
a
Tektronics
465)
in
internallyand
externally-triggered
modes;
the
Student
must
also
be
able
to
interpret
the
display.
with
respect
to time and voltage measurement

Experience
from panel

the

Prerequistes
1,
2,
and
3
are
necessary
only
for
advanced
source
material
as
these
concepts
are
covered
in
this
course.
Prerequistes
4
and
5
necessary
to complete
the basic core material.

the
not
are

loading
subsystem
a C.P.U.

tools

from

BAL

in
of

common

the
or a

diagnostics

train

Disk

the

student

Subsystem

the

maintenance

Field

FRU

List
Heads

Servo

Module

R/W

Servo

Module

R/W

Module

Drive

Positioner

Logic

Module

and

Replaceable

repair

Unit

(FRU).

the

ll.

Cables

Spindle

12.

Filters

Cartridge

13.

Fan

Power

Supply

14.

1@.

Brush

Motor

Spindle
Drive Motor

15.

Drive

CG-3

Belt

NON-GOALS

(Ras

This

does

course

not

teach

any

theory

operation

8-family
OMNIBUS
or
the
ll-family
UNIBUS.
It
not
attempt
to
teach
the
field
maintenance
(either
reading
or interpretation).

also
print

the

does
set

MAINTENANCE PHILOSOPHY

quypeenenenenneneeeeneeeeeneeeememmmmmmman

The
primary
Subscribes

philosophy
to
which
this
technicians
to
replace,

adjust,

maintenance
is
training
clean

FRUS

the

field.

course
Swap,

addition,

Supports
the
concept
of
providing
the
more
advanced
technician,
already
proficient
in
maintaining
and
repairing
FRUs,
with
the theoretical
knowledge
to perform
more
sophisticated
troubleshooting,
such
as
signaltracing
through
a device.

CG-4

COURSE

ORGANIZATION

The
following
paragraphs
describe
the
basic
elements
of
this self-paced
course.
The course map leads you through
the selection
of course
topics.
The
course
modules
each
contain
an
RL
subsystem
topic
to
be described.
Testing
1S involved
with most
course
modules
to check
your
basic
comprehension
of the subject material.
Course

Map

The
five
workbooks
are
functionally
divided
into
the
individual
products
comprising
a part
of
the
subsystem.
The map of basic
core
material
shows
a path
starting
at
the
bottom
with
the Course Guide
and
flowing
towards
the
troubleshooting
module.
In
between,
there
are
course
modulesseach
represents
a Separate
subsystem
topic.
The
arrows
represent
the
suggested
path
to
take.
In
some
cases,

there

than

one

path.

The

decision

yours.
The
diagnostic
module
has
two
paths
leading
to
it.
This means
that both paths must be completed
at that
point before
the diagnostic
module
can be taken.
Some
of
the
modules
controller
workbook.
your
choice
and go to
These

modules

Module

Contents

future,
if
controllers,

are

you
all

are
designated
as
being
in
a
You
are
to
pick
the
controller
of
that workbook
to study
the module.

packaged

this

way

that,

the

desire
to
study
one
of
the
other
the information
is grouped
together.

Each of the modules
contains
at least one objective which
States
what
you
must
be
able
to
do
to
complete
the
module.
Following
the
objectives
are
sample
test
items
which
illustrate
how you will
be tested.
Each
module
also
lists
additional
resources,
should
you
desire
extra
work.
You
should
at
least
skim
over
the
related
logic areas as defined.
This
is so that you will
become
familiar
with
the
location
of the various
subject
areas
in the technical
manuals
(fiche
or hard
copy).
If
the
additional
resources
listed
are
not
available,
this
course can still
be successfully
completed.

CG-5

Basic

Course

Material

TROUBLESHOOTING ) DRIVE WKBK
TOGGLE-IN
ROUTINGS
_

CONTROLLER WKBK

SUBSYSTEM
ERRORS

TO CONTROLLER
BLOCK DIAGRAM

SUBSYSTEM
oo ecene

N
WK WKBK
CONTROLLER

SUBSYSTEM
COMMANDS

CONTROLLER

DRIVE WKBK
ADJUSTMENTS _
CHECKS

DIAGNOSTICS

COMPONENT

LOCATION

DRIVE

CONTROLLER
WKBK

WKBK

INTRO. TO
RL DRIVE

WKBK

DRIVE WKBK

COURSE
GUIDE

CZ-0418

CG-6

Optional Course Material

SERVO

DRIVE WKBK

EMBEDDED
SERVO INTRO

DRIVE WKBK

SECTOR
FORMAT

DRIVE WKBK

FUNCTIONAL
BLOCK DIAGRAM
DRIVE
BD

DRIVE WKBK

INTERFACING

CONTROLLER

WKBK

CONTROLLER
BD

CONTROLLER

WKBK

CONTROLLER

WKBK

FROM SUBSYSTEM
ERRORS
C2-0419

CG-7

If
you
use
the
additional
reference
material,
sign
the
course
administrator's
sign-out
sheet.
This will help
in
Keeping
track of the limited
number
of hard-copy manuals.
Return
the manuals
before
the end of the course.
E_________Eeeeeel
OO
OE
Most
modules
contain
course
administrator

module

test.

(packaged

the

material

that

each

module
The

Once

separately

ready,

the

satisfactorily,

you

sample

the

objective.

course

the

course

administrator's

material

you

with

will

the

allow
you
are
ready

take

workbooks).

objectives

test

administrator

review

test.

you

from

stated

exercises
which
to
see
if
you

must

meet

should

you

satisfactorily

Master

items.

the

check

you

the
a

complete

module
will

the
the

test

cover

form

similar

stated

criteria

each

complete

your

answers

and

each

module,

the

complete

Progress

and
for

Plotter

each

module

should

updated
to keep a record
of your
progress.
You may
also
keep
a record
by
updating
the
Personal
Progress
Plotter
found
in the back of the Course Guide.
If

module

material.

not

satisfactorily

Assistance

from

the

completed,

course

review

the

administrator

and/or
a peer may be in order
so you will
understand
the
material
and
be
ready
to re-take
the
test.
All
answers
to the module
tests are packaged
separately.
Work on only one module
at atime.
The only exception
this rule
is if you must wait
for equipment
in the lab
order
to continue.

to
in

Summary of Module Topics snmsss
MODULE

TITLE

TOPIC

Introduction
the
RL Drive

Sector

Format

Embedded

Servo

Describes
a
basic
subsystem = and
its operating
specs;
teaches
how to
operate
the
drive,
how
to load
and
unload
a
cartridge,
and
how
to
remove
the drive covers
Describes
aligned
on
Describes

concept:

data
data

Subsystem

Commands

how
the
how

Registers

basic

Describes

the

Subsystem

termS

track-following

embedded

can

software

Subsystem

cartridge
data
disk surface

the

is
new

servo

customer's

tasks

perform

that

for

the

Illustrates
the
configurations
of
the
subsystem
registers
(in four

Separate

modules)

Subsystem

Errors

Categorizes
that the RL

Toggle-in

Routines

Contains
a
lab
exercise
using
existing
programs
in which you will
toggle-in
these
routines
to
exercise
a subsystem

Component

Location

Prepares
you
for
doing
the
removal
and replacement
lab by illustrating
the
drive
in
various
states
of
disassembly
and
noting
items
of
interest;
following
this
is
a
lab
exercise
of
field-stripping
the
drive

Diagnostics

Contains

you

nostics

Controller

Diagrams

Block

the
possible
errors
subsystem
can detect

lab

practice

exercises

using

the

that

allow

diag-

Describes
the controller
operation
by utilizing
block diagrams
for the
RL11,

RL8A

and

RLV11

Subsystem
controllers
separate modules)

CG-9

(in

RLV12

four

Summary
MODULE

of Module
TITLE

Interfacing
RL

Topics

Drive

Diagram

TOPIC

Signals

Block

Adjustments/Checks.

servo

Block

(Cont) sumsssmeneeneesnsees

Diagram

Describes
the drive

communications
between
and the controllers

Describes

block

the

drive

diagram

logic

Describes
the
in
performing
drive

what
as
well
adjustments

Illustrates

how

servo

the

data

movements

via
as
on

a
how
the

track-following

utilized

the

carriage

control

Controller
Functional
Block Diagrams

Describes
the
various
subsystem
commands
via
block
diagrams
to
illustrate
their
theory
of
operation
(in four separate modules)

Subsystem

Describes
the basic
installation
of
a
subsystem;
the
four
controllers
are
described
as
to
the
various
jJumper/switches
arrangement
and
cabling
to a drive

Cabling

Troubleshooting

Contains
lab
exercises
you
to
practice
using
you have learned

CG-18

that
the

allow
skills

OPTIONAL COURSE RESOURCES

queues

These
reSources
listed
below
should
be
learning
center
aS
optional
references.
necessary
for completion
of the course.

kept
They

in
are

RL@1/RLO@2 Disk
User's Guide

Subsystem

EK-RL@12-UG

RL@1/RL@2
Manual

Drive

EK-RL@12-TM

RL@1

Disk

Technical

Field

Maintenance

MP-80527

Field

Maintenance

MP-898347

Set

RL@2
Set

RL11 Disk Controller
Description
Manual
RL11

Field

Technical

Maintenance

EK-RL11-TD
MP-98153

Set

RLV11l

Controller

Technical

Description

Manual

RLV11

Field

Maintenance

EK-RLV11-TD

MP-88635

Set

RLV12
Guide

Disk

Controller

User's

RLV12 Controller
Technical
Description
Manual
RLV12

Field

Maintenance

EK~RLV12-UG
EK-RLV12-TD

Set

EK-RL8A-TM

RL8A
Omnibus
Controller
Technical
Manual
RL8A

Field

Maintenance

Set

CG-11

MP-98538

the
not

Memories
Handbook

and

Computer

Interfacing

and

Logic

PDP-11

Bus

EB-15114

Peripherals

Handbook

Accessories

EB-17525

Handbook

EB-95138

PDP-11/04/805/10/30/40/45
Processor

EB-89876

Handbook

CG-12

PERSONAL PROGRESS
BASIC

COURSE

MATERIAL

Introduction

PLOTTER

DATE

ACHIEVED

INITIALS

DATE

ACHIEVED

INITIALS

Drive

Subsystem

Commands

Subsystem

Registers

Subsystem

Errors

Toggle-In

Routines

Component

Location

Adjustments/Checks
Subsystem

Cabling

Troubleshooting

OPTIONAL

COURSE

MATERIAL

Block

Diagram

Controller
Inter facing
Drive

Block

Functional
Sector

Block

Diagram

Format

Embedded
Servo

Diagram

Servo

Block

Intro

Diagram

CG-13