Digital Equipment RW504-ZA User manual

SmallOpticalDiskLibrary
ServiceManual
Part Number: EK–SOL10–SV.B01
Revision/Update Information: This manual supersedes Part Number
EK–SOL10–SV.A01.
Digital Equipment Corporation
Maynard, Massachusetts

First printing, May 1993
Revision, October 1993
The information in this document is subject to change without notice and should not be
construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation
assumes no responsibility for any errors that may appear in this document.
The software described in this document is furnished under a license and may be used or copied
only in accordance with the terms of such license.
Digital Equipment Corporation assumes no responsibility for the use or reliability of its software
on equipment that is not supplied by Digital or its affiliated companies.
© Digital Equipment Corporation 1993.
Reproduced with Permission of the Hewlett-Packard Company
The following are trademarks of Digital Equipment Corporation: DEC, Digital, VAX,
VAX DOCUMENT, VMS, and the DIGITAL logo.
Torx is a registered trademark of the Camcar Division of Textron.
All other trademarks and registered trademarks are the property of their respective owners.
U.S.A.
This equipment generates, uses, and may emit radio frequency energy. The equipment has
been type tested and found to comply with the limits for a 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 interference. Operation of this equipment in a residential area may
cause interference in which case the user at his own expense will be required to take whatever
measures may be required to correct the interference.
This document was prepared using VAX DOCUMENT, Version 2.1.

Contents
Preface ................................................ xi
1 Introduction
1.1 Optical Disk Libraries Overview .................... 1–1
1.2 Product Features . ............................... 1–1
1.3 Optical Library Components ....................... 1–2
1.3.1 The Optical Drive Mechanism ................... 1–4
1.3.2 Magneto-Optical Disks . . ....................... 1–5
1.4 SCSI Interface Options ........................... 1–5
1.4.1 Single-ended SCSI Interface .................... 1–5
1.4.2 Differential SCSI Interface ..................... 1–6
1.5 Product Matrix . . . ............................... 1–6
1.6 Specifications ................................... 1–7
1.7 Optical Disk Specifications . . ....................... 1–12
1.8 Related Documents .............................. 1–14
2 Environmental/Installation/PM
2.1 Environmental Requirements ...................... 2–1
2.2 Operating Temperature/Clearance Requirements. . ...... 2–1
2.3 Location Requirements ........................... 2–1
2.4 Primary Power/External Ground .................... 2–2
2.5 Unpacking Procedure ............................. 2–2
2.6 Installation Procedures ........................... 2–3
2.6.1 Contents of Shipment . . ....................... 2–3
2.6.2 Uncrating the RW504/RW524 Optical Library . ...... 2–4
2.6.3 Installing the RW504/RW524 Optical Library . ...... 2–4
2.6.4 Checking the Fuse and Voltage Setting ............ 2–9
2.6.4.1 Changing the Voltage Configuration ........... 2–10
2.6.5 Connecting an Uninterruptible Power Supply
(UPS) ...................................... 2–10
2.7 Hardware Verification ............................ 2–11
iii

2.8 Moving the RW504/RW524 Optical Disk Library . . ...... 2–12
2.8.1 Moving a Short Distance ....................... 2–12
2.8.2 Shipping the RW504/RW524 Optical Disk Library .... 2–13
2.9 Preventative Maintenance . . ....................... 2–15
3 Product Operation and Configuration
3.1 Front Panel/Control Panel Operations . ............... 3–1
3.2 Rear Panel Features and Controls ................... 3–3
3.3 Setting and Displaying Configurations. ............... 3–5
3.3.1 Setting a Configuration (CONF). . . ............... 3–5
3.3.2 Displaying Information Logs (INFO) .............. 3–5
3.3.3 Choosing Tests and Displaying Results (TEST) ...... 3–6
3.3.4 Setting the SCSI Address....................... 3–7
3.3.5 Securing the Optical Disk Library . ............... 3–8
3.3.6 Setting a New Security Code .................... 3–8
3.3.7 Restricting Disk Insertion and Removal ........... 3–10
3.3.7.1 Setting CONF 15 or CONF 20 . ............... 3–10
3.3.8 Controlling Mailslot Rotation .................... 3–11
3.3.9 Host Configuration ............................ 3–11
3.4 Autochanger Configuration Choices . . . ............... 3–12
4 Troubleshooting and Diagnostics
4.1 Operation/Installation Error Information .............. 4–2
4.2 Power-on Self-tests............................... 4–6
4.3 Optical Disk Cleaning ............................ 4–7
4.3.1 Cleaning Tools Available ....................... 4–8
4.4 Using the Eject Tool to Remove a Disk from the Drive . . . 4–9
4.5 Troubleshooting Using the Control Panel and
Observation .................................... 4–10
4.5.1 The Autochanger Lists the First ‘‘Possibles’’ . . ...... 4–11
4.5.2 How to Use the Results of the Internal Tests . . ...... 4–12
4.5.3 The FRU Isolation Test Sequence . ............... 4–14
4.6 Information Logs . ............................... 4–15
4.7 Recovery from Hardware Errors .................... 4–20
4.7.1 Hardware Error Codes and Recovery Procedures ..... 4–20
4.8 Error Information Through SCSI Commands .......... 4–30
4.9 Diagnostics..................................... 4–31
4.9.1 Offline Diagnostics ............................ 4–32
4.9.2 Internal Diagnostic Tests ....................... 4–32
4.10 Diagnostic Test Command Descriptions ............... 4–33
4.10.1 Sequence Tests ............................... 4–34
iv

4.10.2 Electronic Core Tests . . ....................... 4–38
4.11 The FIND HOME Sequence and Information Logs ...... 4–41
4.11.1 Specific Steps of the FIND HOME Sequence . . ...... 4–41
4.12 Micro-Move Reference Table for Viewing FIND HOME
Sequence ...................................... 4–44
5 Removal and Replacement
5.1 Field-Replaceable Assemblies....................... 5–1
5.2 ESD Precautions . ............................... 5–1
5.3 Tools Required . . . ............................... 5–2
5.4 Assembly/Disassembly Procedures ................... 5–2
5.4.1 Service Access ............................... 5–2
5.4.2 Replacing the Autochanger Controller PCA . . . ...... 5–4
5.4.3 Replacing the Front Bezel Assembly .............. 5–8
5.4.4 Replacing the Front Operation Switch/Cable
Assembly ................................... 5–10
5.4.5 Replacing the Fan/Display/Operation Button
Assemblies . . . ............................... 5–12
5.4.6 Replacing the Mailslot Assembly . . ............... 5–14
5.4.7 Replacing the Optical Drive Mechanism ........... 5–16
5.4.8 Replacing the Interconnect PCA . . ............... 5–22
5.4.9 Replacing the Picker/Carriage Assembly ........... 5–23
5.4.10 Replacing the Leadscrew Assembly ............... 5–26
5.4.11 Replacing the Power Supply .................... 5–29
5.4.12 Replacing the Magazine Guides . . . ............... 5–31
5.4.13 Replacing the Internal UPS Cable . ............... 5–33
5.4.14 Replacing the SCSI Cable ...................... 5–33
5.5 Reinitializing the Autochanger Controller PCA RAM after
Service . ....................................... 5–34
5.5.1 Variables Set by Configuration 16 . ............... 5–34
5.5.2 Variables Set by Configuration 18 . ............... 5–35
5.6 Replaceable Parts. ............................... 5–36
5.6.1 Recommended Service Kit ...................... 5–36
6 Theory of Operation
6.1 The Autochanger . ............................... 6–1
6.1.1 Movements . . . ............................... 6–1
6.1.2 Mechanics . . . ............................... 6–4
6.2 The Autochanger Controller PCA.................... 6–4
6.3 The Power Supply ............................... 6–7
6.4 The Multifunction Optical Drive and Drive Controller.... 6–8
v

6.4.1 Controller PCA............................... 6–8
6.4.1.1 SCSI Controller ........................... 6–9
6.4.1.2 Data Buffer .............................. 6–9
6.4.1.3 Formatter/Sequencer ....................... 6–9
6.4.2 Servo PCA . . . ............................... 6–9
6.4.2.1 DSP Microprocessor and Support/Servo Control
Loops ................................... 6–9
6.4.2.2 Read and Write Channel Electronics ........... 6–10
6.4.3 Mechanism Assembly . . . ....................... 6–10
6.4.3.1 Loader Mechanism . . ....................... 6–10
6.4.3.2 Optical Head ............................. 6–10
6.5 Optical Disk Layout and Error Correction ............. 6–10
6.5.1 Optical Disk Layout—650-Mbyte Capacity.......... 6–11
6.5.2 User Zone Layout—650-Mbyte Capacity ........... 6–11
6.5.3 Optical Disk Layout—1.3-Gbyte Capacity .......... 6–14
6.5.4 User Zone Layout—1.3-Gbyte Capacity ............ 6–14
6.5.5 Drive Defect Management ...................... 6–18
6.5.6 Slip Sparing Algorithm . ....................... 6–20
6.5.7 Replacement Sparing Algorithm . . ............... 6–20
6.5.8 Error Thresholds ............................. 6–21
6.6 Error Detection and Recovery ...................... 6–22
6.6.1 Error Detection .............................. 6–23
6.6.2 Error Recovery Processes ....................... 6–24
6.6.3 SCSI Detected Errors . . . ....................... 6–24
6.6.4 Move Errors . . ............................... 6–25
6.6.5 Hardware Error Codes . . ....................... 6–26
6.6.6 Real Time Event Logging ....................... 6–26
6.7 The SCSI Interface .............................. 6–27
6.7.1 SCSI Command Set ........................... 6–27
A Offline Diagnostic Information
A.1 System Error Report ............................. A–1
A.2 Autochanger Error Codes . . . ....................... A–3
A.3 Drive SCSI-2 Reference ........................... A–13
A.4 Offline Diagnostics ............................... A–27
vi

B Basic Supplies and Reorderable Parts
B.1 Basic Supplies and Reorderable Parts . ............... B–1
C Connecting Multiple Optical Libraries
C.1 Connecting Two Optical Library Units to Two SCSI Ports
.............................................. C–1
C.2 Connecting Two Optical Library Units to One SCSI
Port . . . ....................................... C–2
C.3 Resetting Controller and Drive SCSI Addresses . . ...... C–3
Index
Figures
1–1 Optical Disk Library Components . ............... 1–3
2–1 Removing the Shipping Screw ................... 2–4
2–2 Attaching the SCSI Cable to the RW504/RW524
Optical Disk Library . . . ....................... 2–6
2–3 Rear Panel . . . ............................... 2–8
2–4 Replacing the Shipping Screw ................... 2–14
3–1 Front Panel . . ............................... 3–1
3–2 Rear Panel . . . ............................... 3–3
4–1 Information and Tests Through the Control Panel .... 4–10
4–2 The Autochanger Returns Suspect FRUs ........... 4–11
4–3 How Service Views the Suspect FRUs ............. 4–13
4–4 Information and Tests Through the SCSI Bus . ...... 4–31
5–1 Controller PCA Cable Connections. ............... 5–5
5–2 Removing the Autochanger Controller PCA . . . ...... 5–6
5–3 Dip Switch Location on the Controller PCA . . . ...... 5–7
5–4 Front Bezel Mounting Screws ................... 5–9
5–5 Disconnecting the Mailslot Sensor Cable and Front
Panel Cable . . ............................... 5–10
5–6 Removing the Display Assembly . . ............... 5–13
5–7 Mailslot Mounting Screws ...................... 5–15
5–8 Picker Service Position . . ....................... 5–17
5–9 Optical Drive Mechanism Cable Connections . . ...... 5–18
vii

5–10 Drive Mounting Screws and Optical Sensor Cable
Locations ................................... 5–19
5–11 Sliding the Drive Mechanism Out of the Library ..... 5–20
5–12 Removing the Drive Plate and Optical Sensor . ...... 5–21
5–13 Removing the Interconnect PCA . . ............... 5–23
5–14 Removing the Carriage/Picker Assembly ........... 5–24
5–15 Removing the Carriage Shaft .................... 5–25
5–16 Removing the Leadscrew Mounting Screw .......... 5–26
5–17 Securing the Picker to the Top of the Autochanger . . . 5–27
5–18 Removing the Leadscrew Assembly ............... 5–28
5–19 Preparing the Leadscrew Assembly for
Replacement. . ............................... 5–29
5–20 Removing the Power Supply Assembly ............ 5–30
5–21 Removing the Magazine Guides . . . ............... 5–32
5–22 Optical Disk Library Exploded View (Sheet 1 of 3) . . . 5–39
5–23 Optical Disk Library Exploded View (Sheet 2 of 3) . . . 5–40
5–24 Optical Disk Library Exploded View (Sheet 3 of 3) . . . 5–41
6–1 SCSI Command Translation for Autochanger
Operation ................................... 6–2
6–2 Autochanger Controller PCA Block Diagram . . ...... 6–5
6–3 Functional Diagram ........................... 6–8
6–4 Optical Disk Layout ........................... 6–12
6–5 User Zone Layout for 650-Mbyte Media ............ 6–13
6–6 User Zone Layout for 1.3-Gbyte Media, g=1 . . . ...... 6–15
6–7 User Zone Layout for 1.3-Gbyte,g=16 .............. 6–16
6–8 Error Detection and Recovery ................... 6–22
A–1 System Error Report . . . ....................... A–2
A–2 Jukebox Request Sense Data Parameter Block
Format ..................................... A–3
A–3 Jukebox Request Sense—Additional Sense Data ..... A–5
A–4 Drive Request Sense Data Parameter Format . ...... A–14
C–1 Connecting Two Optical Library Units (RW504/RW524)
to One SCSI Port ............................ C–2
viii

Tables
1Conventions Used in This Guide . . ............... xii
1–1 RW504/RW524 Components ..................... 1–4
1–2 Optical Disk Library Products Matrix ............. 1–6
1–3 Specifications and Characteristics of Optical Disks . . . 1–12
1–4 Related Documentation . ....................... 1–14
1–5 Pass Documents .............................. 1–14
2–1 Fuse Specifications and Part Numbers ............ 2–9
2–2 UPS Power Requirements ...................... 2–11
3–1 Front Panel Controls . . . ....................... 3–2
3–2 Rear Panel Features and Controls . ............... 3–3
3–3 Autochanger Configuration Choices ............... 3–12
4–1 Operation/Installation Troubleshooting ............ 4–2
4–2 Information Logs (INFO Logs) ................... 4–16
4–3 Recovery Procedures for Specific Hardware Errors . . . 4–21
4–4 Sequence Tests ............................... 4–34
4–5 Exerciser Tests ............................... 4–36
4–6 Electronic Core Tests . . . ....................... 4–38
4–7 RW504/RW524 Micro-Move ID Table .............. 4–44
5–1 SW2 Default Settings . . . ....................... 5–8
5–2 Exchange Assemblies . . . ....................... 5–36
5–3 Non-exchange Assemblies ...................... 5–37
6–1 Values for n and m for 1.3-Gbyte with g=16 (1024
media) ..................................... 6–17
6–2 Physical Revolution to Logical Track Layout . . ...... 6–17
6–3 Error Thresholds ............................. 6–22
6–4 Group 0 Commands (6-byte command) ............ 6–28
6–5 Group 1 and 2 Commands (10-byte command) . ...... 6–29
6–6 Group 5 Commands (12-byte command)............ 6–30
A–1 Sense Key and Additional Sense Length Values ..... A–4
A–2 Autochanger Move Errors ...................... A–9
A–3 Autochanger Micro-Move Error Codes ............. A–11
A–4 Drive Request Sense - Additional Sense Code
Values ..................................... A–16
A–5 HP-Specific Drive Error Codes ................... A–19
ix