Digital Equipment RK05 Series Bedienungsanleitung

RK05

Exerciser

Maintenance Manual

digital equipmentcorporation magnard.massachusebts

1st Edition, April

1974

by Digital Equipment Corporation

The material

this manual is for informational

purposes and is subject to change without notice.

Digital Equipment Corporation assumes no respon-

sibility for any errors which may appear in this

manual.

Printed in

U.S.A.

The following are trademarks of Digital Equipment

Corporation, Maynard, Massachusetts:

DEC PDP

FLIP CHIP FOCAL

DIGITAL COMPUTER LAB

CONTENTS

Page

CHAPTER

it'

4.1

4.2

4.2.1

4.2.1.1

4.2.1.2

4.2.1.3

4.2.1.4

4.2.1.5

4.2.2

4.2.2.1

4.2.2.2

,-,

-"N

4.2.2.3

4.2.2.4

4.2.2.5

GENERAL INFORMATION

INTRODUCTION

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

1-1

GENERAL DESCRIPTION

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

1-1

PHYSICAL DESCRIPTION

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

1-1

Exerciser Chassis

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

1-1

Bus Terminator Module

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

1-1

Positioner Exerciser Module

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

Writer Exerciser Module

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

1-1

Front Panel

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

1-1

Unibus Cable Assembly

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

1-3

Power Cable

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

1-3

SPECIFICATIONS

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

1-3

Environmental

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

1-3

Power Requirements

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

1-3

Packaging

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

1-3

UNPACKING.SET-UPAND ACCEPTANCETESTING

UNPACKING PROCEDURE

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

2-1

SET-UPPROCEDURE

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

2-1

ACCEPTANCE TEST PROCEDURE

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

2-3

Writer Exerciser Module Test Procedure

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

2-3

Positioner Exerciser Module Test Procedure

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

2-6

OPERATION

SCOPE

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

3-1

CONTROLS AND INDICATORS

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

3-1

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

MODES OFOPERATION 3-3

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

StepMode 3-3

Alternate Mode

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

3-3

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

Oscillate Mode 3-3

Random Mode

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

3-4

UTILIZATION PROCEDURE

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

3-4

THEORY OF OPERATION

SCOPE

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

4-1

FUNCTIONAL DESCRIPTION

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

4-1

Writer Exerciser

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

4-1

Sector Decoder

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

4-1

Write Control Logic

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

4-1

Write Clock

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

4-1

Clock and Data Output Multiplexer

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

4-1

Head Select Switch

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

4-1

Positioner Exerciser

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

4-1

Strobe Oscillator

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

4-2

Address Counter Control Logic

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

4-2

Address Counter

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

4-2

Cylinder Address Source Select Logic

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

4-2

Fault Detect Logic

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

4-4

...

Ill

CONTENTS (Cont)

Page

CHAPTER 5

CHAPTER 6

APPENDIX A

APPENDIX

DETAILED LOGIC DESCRIPTION

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

Writer Exerciser

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

4-4

Sector Decoder and Write Sector Switch

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

Write Control Logic

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

4-4

Write Clock

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

4-5

Clock and Data Output Multiplexer

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

4-5

Positioner Exerciser

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

4-5

Strobe Oscillator

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

4-5

Address Counter Control Logic

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

4-8

Address Counter

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

4-10

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

Cylinder Address Source Select Logic 4-10

Fault Detect Logic

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

4-11

FLOW DIAGRAM DESCRIPTION

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

4-11

MAINTENANCE

SCOPE

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

5-1

MAINTENANCE PHILOSOPHY

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

5-1

TEST EQUIPMENT REQUIRED

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

5-1

PREVENTIVE MAINTENANCE

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

5-1

CORRECTIVE MAINTENANCE

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

5-2

RK05 DISK DRIVE MAINTENANCE USING THERK05 EXERCISER

SCOPE

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

6-1

ALIGNMENT. CHECKS. AND ADJUSTMENTS

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

6-1

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

Alignment Cartridges 6-1

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

RK05K-AC Alignment Cartridge 6-1

2315 CE Test Cartridge Shim Installation

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

6-2

Servo System Timing Checks and Adjustments

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

6-2

Dynamic Off-Line Checks and Adjustments

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

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

Static Tests and Adjustments 6-9

ReadIWrite Data Separator (G180 Card) Adjustment

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

6-10

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

Read/Write Head Check and Alignment 6-10

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

RK05K-AC Alignment Cartridge 6-11

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

2315 CEPack 6-14

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

Index/Sector Timing Adjustment 6-16

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

RK05K-AC Alignment Cartridge 6-16

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

2315 CE Pack 6-18

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

Cartridge Receiver Alignment 6-19

1C SCHEMATICS

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

74424-LINE-TO-10-LINEDECODERS A-1

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

7474 DUAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS A-2

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

74123MONOSTABLE MULTIVIBRATOR A-3

74193 SYNCHRONOUS 4-BITUPIDOWN COUNTER (DUAL CLOCKWITH CLEAR)

ENGINEERING DRAWING SET

Figure

ILLUSTRATIONS

Title

Page

RK05 Exerciser Components

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

1-2

Bus Terminator Module

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

1-2

Unibus Cable Assembly

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

1-3

Power Cable

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

1-4

Exerciser to RK05 Disk Drive Connection Diagram

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

2-2

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

RK05 Exerciser to Multiple RK05 Disk Drives Connection Diagram 2-3

Write Gate Data Waveform

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

2-4

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

Writer Exerciser Clock and Data Waveforms 2-5

Write Data Waveforms

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

2-7

How to Read a Vernier

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

2-8

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

RK05 Exerciser Front Panel Controls and Indicators 3-1

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

RK05 Exerciser Functional Block Diagram 4-3

Sector Decoder and Write Section Switch Diagram

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

4-4

Write Control Logic

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

4-5

Write Clock

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

4-6

Write Clock and Multiplexei Timing Diagram

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

4-6

Clock and Data Multiplexer Logic

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

4-7

Strobe Oscillator

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

4-7

Address Counter Control Logic

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

4-9

Address Counter Logic

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

4-10

Cylinder Address Source Select Logic

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

4-11

Fault Detect Logic

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

4-11

Writer Exerciser Flow Diagram

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

4-12

Positioner Exerciser Step Mode Flow Diagram

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

4-13

Positioner Exerciser Alternate Mode Flow Diagram

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

4-14

Positioner Exerciser Oscillate Mode Flow Diagram

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

4-15

Positioner Exerciser Random Mode Flow Diagram

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

4-16

Troubleshooting Flow Diagram

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

5-3

Spindle Runout (Negligible Runout)

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

6-1

Spindle Runout (Considerable Runout)

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

6-2

CE Test Cartridge Shim Installation

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

6-3

Sine AmplitudeIOffset and Velocity Offset Waveform

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

6-5

Cosine AmplitudeIOffset Waveform

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

6-6

Velocity Amplitude Waveform

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

6-7

Acceleration Waveform

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

6-7

Full Stroke Waveform

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

6-8

Full Stroke Position Waveform

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

6-8

Outer Limit Waveform

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

6-9

RK05-AC Alignment Cartridge Head Alignment Waveforms

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

6-13

ReadIWrite Head Adjustments

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

6-15

2315CE Pack Head Alignment Waveforms

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

6-17

Index/Sector Waveform

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

6-19

Cartridge to Receiver Clearance

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

6-20

Cartidge Receiver Clearances

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

6-20

7442 Package and Logic Diagrams

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

A-1

DEC 74123 IC Illustrations

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

A-3

DEC 74123 1C Output Pulse Width vs

External Timing Capacitance

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

A-3

74193Logic Diagram

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

A-5

TABLES

Table

Title

Page

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

Exerciser Controls and Indicators

3-2

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

Exerciser Operating Procedure 34

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

Data Bits Switchto Data Bit Correlation

3-8

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

Test Equipment.Required 5-1

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

Preventive Maintenance Schedule 5-2

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

Servo System Checks

6-2

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

Servo System Adjustments 64

RK05 EXERCISER MAINTENANCE MANUAL

RK05-TA

RK05

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