StorageWorks RW551 Manuale utente

Medium Optical Disk Library

(RW551/RW552)

Service Manual

EK–MOL80–SV. B01

Digital Equipment Corporation

Maynard, Massachusetts

Second Edition, November, 1997

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

might 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. No

responsibility is assumed for the use or reliability of software or equipment that

is not supplied by Digital Equipment Corporation or its affiliated companies.

The following are trademarks of Digital Equipment Corporation: the DIGITAL

logo and StorageWorks.

The following are third-party trademarks:

Microsoft and MS-DOS are registered trademarks of Microsoft Corporation.

Reproduced with permission of the Hewlett-Packard Company Printed in U.S.A.

EK–MOL80–SV. B01 iii

Contents

1 Product Information

Product Features ................................................................................................1–1

The Optical Drive Mechanism ...........................................................................1–3

Product Support .................................................................................................1–4

Product Matrix ...................................................................................................1–4

Characteristics ...................................................................................................1–4

2 Environmental/Installation/PM

Environmental Requirements .............................................................................2–1

Primary Power/External Ground ........................................................................2–1

Clearance Requirements ....................................................................................2–1

Location Requirements ......................................................................................2–2

Responsibilities ..................................................................................................2–2

Checkout Procedure .........................................................................2–2

Unpacking & Taking the Jukebox Off the Pallet...............................2–3

Tools Required.................................................................................2–3

3 Product Configuration and Operation

Connections to the RW551/RW552 Jukebox ......................................................3–1

Configuring and Operating the Jukebox..............................................................3–3

Connecting an Uninterruptable Power Supply (UPS) ..........................................3–3

Connecting the SCSI Cable to the Jukebox.................................................3–4

Connecting Power.......................................................................................3–5

Control Panel Operation......................................................................................3–6

Using Selection Buttons..............................................................................3–7

Understanding Display Window Messages..................................................3–7

Viewing and/or Setting SCSI Ids and Logical Unit Numbers (LUNs) ........3–8

Changing an Optical Drive SCSI Address.................................................3–13

Changing a Configuration Option.............................................................3–14

Loading an Optical Disk into the Jukebox.................................................3–17

Ejecting an Optical Disk from the Jukebox...............................................3–19

Setting a Security Code ............................................................................3–20

Moving or Shipping the Jukebox.......................................................................3–21

Medium Optical Disk (RW551/RW552) Library

iv EK–MOL80–SV. B01

3 Product Configuration and Operation (continued)

Moving the Jukebox a Short Distance ..............................................................3–22

Shipping the Jukebox ..................................................................... 3–23

Host Configuration........................................................................................... 3–23

4 Troubleshooting and Diagnostics

Operation / Installation Troubleshooting ............................................................4–1

Troubleshooting Using the Control Panel and Observation ........................4–1

The Autochanger Lists the First "Possibles" ..............................................4–2

Evaluating Results of the Internal FRU Isolation .......................................4–2

Retrieving Performance Information .........................................................4–3

Getting Error Information through the SCSI Bus .......................................4–6

Diagnostics ................................................................................................4–7

Offline Diagnostics ....................................................................................4–8

Recovery from Hardware Errors............................................................... 4–14

Running an Internal Test.......................................................................... 4–34

Optical Disk Cleaning ...................................................................................... 4–38

Using the Eject Tool to Remove a Disk from the Drive....................................4–40

5 Removal and Replacement

Field–Replaceable Assemblies ..........................................................................5–2

ESD Precautions ................................................................................................5–2

Tools Required ..................................................................................................5–2

Disassembly/Reassembly Procedures (SCSI–Connect Version) ..........................5–3

Service Access ..........................................................................................5–4

Right and Left Lower Access Panels .........................................................5–4

Rear Access Panel .....................................................................................5–5

Front Left and Front Right Panels .............................................................5–6

Replacing the Power Supplies .................................................................5–11

Replacing the Mailslot Assembly............................................................. 5–12

Replacing the Control Panel Assembly ...................................................5–13

Replacing an Optical Drive ..................................................................... 5–14

Replacing the Interposer PCA .................................................................5–16

Replacing a Cooling Fan .........................................................................5–16

Replacing the Picker ...............................................................................5–17

Removing/Replacing the Translate Frame ............................................... 5–21

Removing/Replacing the Encoder Strip ...................................................5–27

Replacing the Vertical Motion Motor ...................................................... 5–28

Replacing the Vertical Motor Gear Box...................................................5–30

Contents

EK–MOL80–SV. B01 v

5 Removal and Replacement (continued)

Replacing the Controller PCA....................................................................5–35

.......................................................Replacing the Internal SCSI Cable

Replacing the SCSI Interface PCA.............................................................5–38

Re–initializing the Jukebox Controller PCA RAM After Service ...............5–40

Field Replaceable Units (FRUs) in the Medium Library.............................5–42

Recommended Service Kits .......................................................................5–44

Miscellaneous............................................................................................5–52

6 Theory of Operation

Autochanger Robotics.........................................................................................6–2

Movements.......................................................................................6–2

The Autochanger Controller PCA .................................................................6–4

Interposer PCA..............................................................................................6–6

Power Supplies .............................................................................................6–7

SCSI Repeater/Converter/LUN PCA .............................................................6–7

Picker .........................................................................................................6–10

Single–Picker Mode ................................................................................6–10

Dual–Picker Mode ...................................................................................6–10

Two–Move Exchange ..............................................................................6–10

Dual–Picker Exchange .............................................................................6–11

Quick Exchange.......................................................................................6–12

The Multi–function Optical Drive & Drive Controller......................................6–13

Controller PCA ........................................................................................6–14

SCSI Controller........................................................................................6–14

Data Buffer ..............................................................................................6–14

Formatter/Sequencer ................................................................................6–14

Servo PCA ...............................................................................................6–14

DSP Microprocessor and Support/Servo Control Loops............................6–14

Read and Write Channel Electronics........................................................6–15

Mechanism Assembly....................................................................................6–15

Loader Mechanism...................................................................................6–15

Optical Head............................................................................................6–15

Optical Disk Layout and Error Correction.........................................................6–16

Disk Formats............................................................................................6–16

Controller.................................................................................................6–17

CPU.........................................................................................................6–17

Gate Array ...............................................................................................6–17

Medium Optical Disk (RW551/RW552) Library

vi EK–MOL80–SV. B01

6 Theory of Operation (continued)

DSP (Digital Signal Processor)....................................................................... 6–17

Read/Write Channel Electronics ..............................................................6–17

Loading Motor.........................................................................................6–18

Bias Magnet.............................................................................................6–18

Optical Head............................................................................................ 6–18

Optical Disk Layout and Error Correction......................................................6–18

Disk Formats............................................................................................6–18

Optical Disk Layout................................................................................. 6–19

User Zone Layout ....................................................................................6–19

650–Mbyte Disk and Spare Groups..........................................................6–20

1.3–Gbyte Disk User and Spare Groups ................................................... 6–20

2.6 Gbyte Disk User and Spare Groups .................................................... 6–20

Drive Defect Management................................................................................ 6–32

Slip Sparing Algorithm..................................................................................... 6–33

Replacement Sparing Algorithm.......................................................................6–34

Error Thresholds...............................................................................................6–34

Diagnostic Strategy .......................................................................................... 6–35

Internal Autochanger Diagnostics ............................................................ 6–35

The SCSI Interface...................................................................................6–35

Single–Ended and Differential SCSI Interfaces ........................................6–36

SCSI Command Set.......................................................................................... 6–37

Appendix A Basic Supplies and Reorderable Parts

Basic Supplies & Reorderable Parts................................................................... A–1

Related Documents............................................................................................ A–2

Figures

1–1 RW551 & RW552 Jukebox......................................................................1–1

2–1 Clearance Requirements...........................................................................2–1

2–2 Installing the Ramp Onto the Pallet..........................................................2–3

3–1 Front Panel ..............................................................................................3–1

3–2 Rear Panel (SCSI Connect) .....................................................................3–2

3–3 The Jukebox Control Panel.......................................................................3–6

3–4 Control Panel Menu Tree .........................................................................3–9

4–1 The Autochanger Returns Suspect FRUs .................................................4–2

4–2 How Service Views the Suspect FRUs ....................................................4–3

4–3 Information and Tests Through the SCSI Bus ..........................................4–7

5–1 Right Lower Access Panel .......................................................................5–4

Contents

EK–MOL80–SV. B01 vii

Figures (continued)

5–2 Rear Access Panel ...................................................................................5–5

5–3 Center Cover Mounting Screw .................................................................5–6

5–4 Positioning the Control Display Before Removing the Panel ...................5–7

5–5 Accessing the Underside of the Control Panel ..........................................5–8

5–6 Disconnecting the Control Panel Cable ....................................................5–9

5–7 Removing the Front Right Panel ..............................................................5–9

5–8 Power Supplies ......................................................................................5–11

5–9 Power Test Points on the Interposer PCA ...............................................5–12

5–10 Accessing the Mailslot Assembly ..........................................................5–12

5–11 Control Panel Mounting Screws .............................................................5–13

5–12 Optical Drives–with Cables Connected ..................................................5–14

5–13 Optical Drives–with Cables Disconnected .............................................5–15

5–14 Optical Drive Mounting .........................................................................5–15

5–15 Interposer PCA ......................................................................................5–16

5–16 Cooling Fan ...........................................................................................5–17

5–17 Picker Umbilical Cable ..........................................................................5–17

5–18 Picker Translate Cable ...........................................................................5–18

5–19 Picker Translate Cable (stowed) ............................................................5–19

5–20 Stopping Vertical Motor Gear Box Motion ............................................5–19

5–21 Picker Capture Bracket Mounting ..........................................................5–20

5–22 Picker Capture Bracket ..........................................................................5–20

5–23 Rotating the Picker Assembly Out of the Translate Frame .....................5–21

5–24 Translate Frame Raised For Easier Access .............................................5–22

5–25 Stopping Vertical Motor Gear Box Motion ...........................................5–23

5–26 Encoder Strip Mounting Peg ..................................................................5–24

5–27 Picker Translate Frame Tensioners ........................................................5–25

5–28 Translate Frame Rear Tensioner Mount .................................................5–25

5–29 Translate Frame Tensioners Released ....................................................5–26

5–30 Retaining Peg On Lower End of the Encoder Strip.................................5–27

5–31 Encoder Strip Mounting Screw...............................................................5–28

5–32 Top Mount Of Encoder Strip ..................................................................5–28

5–33 Vertical Motion Motor............................................................................5–29

5–34 Slave Rope Tensioner Assembly.............................................................5–30

5–35 Pivoting the Tensioner Lever to Release Tension ...................................5–31

5–36 Taking the Drive Rope Off the Top Pulleys............................................5–32

Medium Optical Disk (RW551/RW552) Library

viii EK–MOL80–SV. B01

Figures (continued)

5–37 Disconnecting the Drive Rope From a Tensioner ................................... 5–32

5–38 Two Ends of the Slave Rope In the Tensioner........................................ 5–33

5–39 Disconnecting the 3–Rope Coupler ........................................................5–33

5–40 Rear Side Of Vertical Motor Gear Box...................................................5–34

5–41 The Rope and Pulley System..................................................................5–34

5–42 Positioning the Tensioner to Mount On Translate Frame........................ 5–35

5–43 Controller PCA–Cover On ..................................................................... 5–36

5–44 Controller PCA–Cover Off.....................................................................5–36

5–45 Controller PCA–Cables Off.................................................................... 5–37

5–46 Interface/Power Distribution Assembly..................................................5–38

5–47 SCSI Converter/Repeater PCA; Power Distribution PCA(Below)...........5–38

5–48 SCSI PCA Jumpers ................................................................................5–39

5–49 Jukebox Exploded View.........................................................................5–47

5–50 Jukebox Power Harness..........................................................................5–49

5–51 Jukebox Pulley and Rope Diagram.........................................................5–50

6–1 SCSI Command Translation for Autochanger Operation ..........................6–2

6–2 Autochanger Controller PCA Block Diagram ..........................................6–4

6–3 Interposer PCA ........................................................................................6–6

6–4 Power Supplies and Power–on Sequence .................................................6–7

6–5 SCSI Repeater/Converter/LUN PCA .......................................................6–8

6–6 Functional Diagram ............................................................................... 6–13

6–7 4X–Drive Functional Diagram ..............................................................6–16

6–8 Optical Disk Layout............................................................................... 6–19

6–9 User Zone Layout for 650–Mbyte Media ............................................... 6–21

6–10 User Zone Layout for 1.3–GByte Media, g=1.........................................6–22

6–11 User Zone Layout for 1.3–GByte, g=16 ................................................. 6–23

6–12 User Zone Layout for 2.6–Gbyte Media, 1,024 bytes/sector...................6–24

6–13 User Zone Layout for 2.6–Gbyte Media, 512 bytes/sector......................6–25

Contents

EK–MOL80–SV. B01 ix

Tables

1–1 Optical Disk Standards Met by Digital Optical Disks .................................1–3

1–2 Jukebox Capacities ....................................................................................1–3

1–3 RW551/RW552 Jukebox Matrix ................................................................1–4

3–1 UPS Power Requirements...........................................................................3–4

3–2 SCSI Cable Length Limitations..................................................................3–5

3–3 Default SCSI and LUN Settings................................................................3–11

3–4 Default LUN Settings/LUN Settings if “DRVs ID” Address is Changed...3–11

3–5 Configuration Choices..............................................................................3–15

4–1 Information Logs .......................................................................................4–4

4–2 Operation Errors.........................................................................................4–9

4–3 Hardware Errors and Recovery Procedures ..............................................4–14

4–4 Micro–Move IDs .....................................................................................4–25

4–5 Available Internal Tests for the RW551 and RW552 ...............................4–34

5–1 List of Field Replaceable Units.................................................................5–42

5–2 Exchange Parts.........................................................................................5–44

5–3 Non-Exchange Parts .................................................................................5–45

5–4 Common Resource Parts...........................................................................5–52

6–1 Values for n and m for 1.3 Gbyte with g=16 (1,024 media) ......................6–26

6–2 Physical Revolution to Logical Track Layout...........................................6–27

6–3 4X, 1,024 Bytes/Sector Disk Structure......................................................6–28

6–4 4X, 512 Bytes/Sector Disk Structure.........................................................6–29

6–5 Technical Comparisons of 1X, 2X, and 4X Optical Drives .......................6–31

6–6 Error Thresholds ......................................................................................6–35

A–1 Common Resource Parts............................................................................A–1

A–2 Related Documentation .............................................................................A–2

A–3 TIMA Documents......................................................................................A–3

EK–MOL80–SV. B01 xi

Revision Record

This Revision Record provides a concise publication history of this guide. It lists the

guide revision levels, release dates, and reasons for the revisions. It also describes how

the changes to affected pages are marked in the guide.

Revision Level Date Summary of Changes

EK–MOL80–SV. A01 December, 1996 First Edition

EK–MOL80–SV. B01 November, 1997 Corrects table 5–1; adds

table and exploded view

of non-exchange parts.

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