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Digital Equipment StorageWorks RW555 Service Manual

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Large Optical Disk
(RW555/RW557) Library
Service Manual
EK–RW55L–SM. B01
Digital Equipment Corporation
Maynard, Massachusetts

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Summary of Contents for Digital Equipment StorageWorks RW555

  • Page 1 Large Optical Disk (RW555/RW557) Library Service Manual EK–RW55L–SM. B01 Digital Equipment Corporation Maynard, Massachusetts...
  • Page 2 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. The DIGITAL Logo is a trademark of the DIGITAL Equipment Corporation. Copyright © DIGITAL Equipment Corporation 1997 All Rights Reserved...

  • Page 3: Table Of Contents

    Contents Revision Record....................xi About This Guide..................xiii Product Information Product Matrix ..................1–1 Product Support...................1–2 Characteristics ..................1–2 Environmental/Installation/PM Environmental Requirements...............2–1 Primary Power/External Ground............2–1 Current Requirements................2–1 Clearance Requirements ..............2–2 Weight-Bearing Requirements.............2–2 Location Requirements................2–2 Responsibilities ...................2–3 Checkout Procedure................2–3 Unpacking and Taking the Jukebox Off the Pallet .......2–3 2.10 Moving the Jukebox a Short Distance..........2–6 2.11...
  • Page 4 Large Optical Disk (RW555/RW557) Library Product Configuration and Operation ( continued 3.2.9 Connecting Peripheral Devices with Bus 1 ........3–10 3.2.10 Setting the SCSI IDs ..............3–13 3.2.11 Setting the LUN Mode..............3–15 Control Panel Operation..............3–19 3.3.1 Using Selection Buttons ..............3–20 3.3.2 Understanding Display Window Messages ........
  • Page 5 Contents Removal and Replacement Field-Replaceable Assemblies .............5–2 ESD Precautions..................5–2 Tools Required ..................5–3 Disassembly/Reassembly Procedure ............5–3 Replacing an Optical Drive ..............5–6 Replacing the Power Supplies............5–11 Replacing the Mailslot Assembly ............5–13 Replacing the Control Panel Assembly..........5–15 Replacing the Interposer PCAs ............5–17 5.10 Replacing the Picker................
  • Page 6 Large Optical Disk (RW555/RW557) Library Theory of Operation ( continued 6.8.1 Limited Access Slots................. 6–24 4X Multi-function Optical Drives............6–27 6.9.1 Controller PCA ................. 6–28 6.9.2 SCSI Controller................. 6–28 6.9.3 Data Buffer ..................6–28 6.9.4 Formatter/Sequencer ................. 6–28 6.9.5 Servo PCA ..................6–28 6.9.6 DSP Microprocessor and Support/Servo Control Loops.....
  • Page 7 Contents Figures 2–1 Clearance Requirements ..............2–2 3–1 Right Side Panel Features (4X version) ..........3–1 3–2 Jukebox Display Menu Tree ..............3–5 3–3 Loading an Optical Disk..............3–6 2–1 Clearance Requirements ..............2–2 3–1 Right Side Panel Features..............3–1 3–2 Connecting a 4 or 6-Drive Jukebox as the Only Peripheral ....3–6 3–3 Connecting a 4 or 6-Drive Jukeboxes with Other Peripheral Devices.3–10 3–4...
  • Page 8 Large Optical Disk (RW555/RW557) Library Figures ( continued 5–22 Translate Frame Tensioner Mount............. 5–28 5–23 Translate Frame Tensioner Released ..........5–28 5–24 Retaining Peg on Lower End of the Vertical Encoder Strip ....5–30 5–25 Upper Encoder Strip Mount .............. 5–30 5–26 Vertical Motion Motor ..............
  • Page 9 Contents Figures ( continued 6–17 One-Finger Grab Recovery Areas at the Bottom of the Stacks...6–26 6–18 One-Finger Grab Recovery Areas at the Top of the Stacks ....6–26 6–19 4X-Drive Functional Diagram ............6–27 6–20 4X-Drive Functional Diagram ............6–30 6–21 Optical Disk Layout ................6–33 6–22 User Zone Layout for 650-Byte Media ..........6–35 6–23...
  • Page 10 Large Optical Disk (RW555/RW557) Library Tables ( continued 5–3 Non-Exchange Parts................5–49 5–4 Common Resource Parts ..............5–58 6–1 Passthru Mode – Six Drives .............. 6–14 6–2 LUN Mapping Active – Six Drives ........... 6–15 6–3 Default SCSI and LUN Settings ............6–17 6–4 Element Numbering in the Jukebox...........

  • Page 11: Revision Record

    Revision Record This Revision Record provides a concise publication history of this manual. It lists the manual revision levels, release dates, and reasons for the revisions. It also describes how the changes to affected pages are marked in the manual. The following revision history lists all revisions of this publication and their effective dates.

  • Page 13: About This Guide

    About This Guide This section identifies the users of this manual and describes the contents and structure. In addition, it includes a list of conventions used in the manual. This manual provides a product overview, installation, operation, and maintenance information for the Large Optical Disk Library. Intended Audience This manual is intended for people who will install, operate, and maintain the Large Optical Disk Library.
  • Page 14 Large Optical Disk (RW555/RW557) Library Chapter 6. Theory of Operation This chapter discusses the following aspects of the robotics of the RW555/RW557 jukeboxes, the autochanger, command execution, mechanics, autochanger controller PCA, interposer PCAs, power supplies, LUN conversion, Picker and Picker Modes, Element Numbering and Slot Numbering, and optical disk drives.

  • Page 15: Product Information

    Product Information This chapter provides the physical characteristics and environmental specifications for the RW555/RW557 Large Optical Disk Library. Product Matrix Table 1–1 4X-Drive Jukeboxes Model Description RW555 Optical jukebox with four 4X-capacity multi-function optical drives and capacity for up to 128 rewritable or MO-Worm disks. One blank disk included.

  • Page 16: Product Support

    Large Optical Disk (RW555/RW557) Library Product Support Table 1–3 Optical Disk Standards Met by DIGITAL Optical Disks Disk Type Capacity/Format Standard Rewritable Meets ANSI and ISO standards 594 Mbytes 512 for Continuous-Composite (CC) bytes/sector format–conforms to ISO/IEC DIS 650 Mbytes 1024 10089A;...
  • Page 17 Chapter 1. Product Information Table 1–4 Optical Disk Drive Mechanism and Jukebox ( continued RWZ53 Drive (4X) Read transfer rate-max. - for 1024 bytes/sector sustained up to 1.69 Mb/s (4X disks) up to 1.24 Mb/s (2X disks) up to 1.04 Mb/s (1X disks) Write transfer rate- max.

  • Page 18: Environmental Specifications

    Large Optical Disk (RW555/RW557) Library Table 1–5 Environmental Specifications Autochanger Drive Media Temperature Operating 10° to 40°C 5° to 45°C (4X) 10° to 5° to 50°C (2X) 60°C Non-operating -40° to 70°C -40° to 60°C (4X) -10° to -40° to 70°C (2X) 50°C Max.
  • Page 19 Chapter 1. Product Information Table 1–5 Environmental Specifications ( continued Autochanger Drive Media Vibration (5-500 Hz range) Operating (max. accel.) 0.21 g rms 0.3 g rms (4X) >0.21 g rms 0.5 g rms (2X) Non-operating random 2 g rms 3 g rms Non-operating 0.5 g (0-peak) 1 g (0-peak)

  • Page 20: Power Requirements

    Large Optical Disk (RW555/RW557) Library Table 1–6 Power Requirements Line voltage 100-240 V Line frequency 50-60 Hz Power consumption (typical) 340 W 1160.4 BTU Power consumption (maximum) 560 W 1911.2 BTU Table 1–7 Service Characteristics Mean swaps between failures (MSBF)–robotics 2 million Mean swaps between failures (MSBF)–drive 600,000...
  • Page 21 Chapter 1. Product Information Table 1–9 DIGITAL Optical Disks Formatted Capacity 1,024-byte sectors 650 Mbytes 1.3 GBytes 2.6 GBytes 512-byte sectors 594 Mbytes 1.2 GBytes 2.3 GBytes Recording Characteristics (continuous-composite format) Bytes per sector 1024 (512) 1024 (512) 1024 (512) Sectors per logical 17 (31) 17 (31)

  • Page 23: Environmental/Installation/Pm

    Environmental/Installation/PM This chapter describes environmental requirements, installation procedures, and preventive maintenance. Environmental Requirements NOTE The environmental requirements listed here apply when the optical disk jukebox is not connected to a DIGITAL system. When this device is connected DIGITAL systems, more stringent environmental specifications listed for any single DIGITAL device within the DIGITAL system are...

  • Page 24: Clearance Requirements

    Large Optical Disk (RW555/RW557) Library Clearance Requirements Figure 2–1 Clearance Requirements Rear Electronic Vertical and drive Motor, Rope access and translate frame access Mailslot There are no clearance requirements for airflow other than to keep the slots on the top panels of the cabinet free from cover or obstructions, For service, all sides should have approximately 1-meter clearance.

  • Page 25: Responsibilities

    Chapter 2. Environmental/Installation/PM Responsibilities Customer site preparation/verification and installation are the customer's or reseller's responsibility; DIGITAL will perform the site preparation/verification and/or installation on a time-and-materials basis. See the RW555 Product Support Plan for further information on support policies. See the RW555 Product Support Plan for further information on support policies for the RW557 versions.
  • Page 26 Large Optical Disk (RW555/RW557) Library 1. Cut the bands around the box. 2. Lift the top off. 3. Release plastic latches to remove the cardboard box around the unit. 4. Unbind ramp and lower the ramp to the floor. 5. Use the bolts strapped to the lower sides of the ramp to fasten the ramp to the pallet.
  • Page 27 Chapter 2. Environmental/Installation/PM 7. Use an open-end wrench to lower the 3/4-inch nuts on the top of the tie- down bolts to release the jukebox.. 8. Raise the 3/4-inch nuts on the tie-down bolt approximately 1-1/2 inches so that the bolt can be retracted down through the pallet. This is done so that the jukebox wheels will not catch on the bolts.

  • Page 28: Moving The Jukebox A Short Distance

    Large Optical Disk (RW555/RW557) Library 2.10 Moving the Jukebox a Short Distance 1. Unmount (unreserve) any optical disk surfaces in the jukebox if necessary. Refer to the computer operating system, or software application documentation for instructions on how to unmount optical disks. 2.

  • Page 29: Shipping The Jukebox

    Chapter 2. Environmental/Installation/PM NOTE The jukebox is shipped from the factory with two screws securing the customer access panel to the side of the jukebox. These screws must be removed when the jukebox is unpacked and may or may not have been replaced when the access panel was reattached.
  • Page 30 Large Optical Disk (RW555/RW557) Library CAUTION Failure to eject disks from the optical drives prior to moving the jukebox could result in damage to the optical drive mechanisms. Failure to eject all disks from the storage slots in the jukebox could result in damage to the jukebox.

  • Page 31: Product Configuration And Operation

    Product Configuration and Operation This chapter describes how to configure and operate the jukebox. Connections to the Jukebox Figure 3–1 Right Side Panel Features (4X version shown) EK–RW55L–SM. B01 3–1...
  • Page 32 Large Optical Disk (RW555/RW557) Library 1) SCSI ports Used for attaching SCSI cable(s) from the jukebox to the host computer. On 4X models, there are two SCSI cards available (labeled "Bus 1"). You must select either the single-ended or the differential pair of connectors (see item 2 in this list), and both SCSI connectors selected must be used.

  • Page 33: Configuring And Operating The Jukebox

    Chapter 3. Product Configuration and Operation Configuring and Operating the Jukebox NOTE Before you connect the optical disk jukebox to the host, verify that it is supported by the host. 3.2.1 Connecting an Uninterruptable Power Supply (UPS) To fully protect against data loss in the event of a power failure, DIGITAL recommends the use of an uninterruptable power supply (UPS).

  • Page 34: Connecting The Scsi Cables To The 4X-Drive Jukebox

    Large Optical Disk (RW555/RW557) Library 3.2.2 Connecting the SCSI Cables to the 4X-Drive Jukebox The jukebox connects to the host computer with high-density SCSI interface cable(s), and may be configured to use either a single-ended or a differential SCSI interface. Select the SCSI interface type using the SCSI interface switch(es) behind the customer access panel on the right of the jukebox (see Figure 3–1).

  • Page 35: Connecting The Jukebox As The Only Peripheral

    Chapter 3. Product Configuration and Operation Refer to the following sections to connect the jukebox to the host computer. 3.2.3 Connecting the Jukebox as the Only Peripheral CAUTION Make sure that all peripheral devices connected to the host computer have been properly shut down. If the host computer is connected to a network, check with the system administrator before switching off power.

  • Page 36: Connecting A 4 Or 6-Drive Jukebox As The Only Peripheral

    Large Optical Disk (RW555/RW557) Library NOTE The jukebox is shipped from the factory with two screws securing the customer access panel to the side of the jukebox. These screws must be removed when the jukebox is unpacked and may or may not have been replaced when the access panel was reattached.

  • Page 37: Connecting The Jukebox With Other Scsi Peripherals

    Chapter 3. Product Configuration and Operation 4. Route the SCSI cable(s) through the long cable slot at the bottom of the jukebox right side panel, and out through the back of the jukebox. 5. Plug the other end of the SCSI cable into a SCSI port on the host computer. (Each SCSI cable must be connected to a separate connector on the host computer.) NOTE...

  • Page 38: Removing The Customer Access Panel

    Large Optical Disk (RW555/RW557) Library The jukebox must be connected to the host computer and additional peripherals differently depending upon the number of optical drives contained in the jukebox, and whether the jukebox SCSI LUN mode is ON or OFF. The available configurations are as listed in the following table: Table 3–3 SCSI Configuration Choices No.

  • Page 39: Connecting 4 Or 6-Drive Jukeboxes With Other Peripheral Devices

    Chapter 3. Product Configuration and Operation NOTE The jukebox is shipped from the factory with two screws securing the customer access panel to the side of the jukebox. These screws must be removed when the jukebox is unpacked and may or may not have been replaced when the access panel was reattached.
  • Page 40 Large Optical Disk (RW555/RW557) Library Figure 3–3 Connecting 4- or 6-drive Jukeboxes with Other Peripheral Devices 4. Route the two SCSI cables down through the long cable slot at the bottom of the jukebox right side panel, and out through the back of the jukebox (not shown).

  • Page 41: Connecting Peripheral Devices With Bus 1

    Chapter 3. Product Configuration and Operation 3.2.9 Connecting Peripheral Devices with Bus 1 NOTE LUN mode must be ON to connect peripheral devices using this method. If Bus 1 and Bus 2 are daisy-chained single-ended SCSI connectors are used, a short CIO-to-disk SCSI cable (HP part number A1094-61601) can be used.
  • Page 42 Large Optical Disk (RW555/RW557) Library Figure 3–4 Connecting Peripheral Devices with Bus 1 1. Connect a SCSI cable to one of the connectors on Bus 1 that matches the interface switch setting. 2. Connect a short SCSI cable to the other connector on Bus 1 that matches the interface switch setting.

  • Page 43: Connecting Peripheral Devices With Bus 1

    Chapter 3. Product Configuration and Operation NOTE You can connect the jukebox to any peripheral device along a chain of peripherals, as long as you plug a terminator into the last device in the chain. 7. Route the SCSI cable(s) down through the cable slot at the bottom of the jukebox right side panel, and out through the back of the jukebox.

  • Page 44: Setting The Scsi Ids

    Large Optical Disk (RW555/RW557) Library 3.2.10 Setting the SCSI IDs READY ADMIN * SCSI ID’s * The optical jukebox has the option of running in SCSI LUN (logical unit number) mode which allows you to assign from one to three SCSI addresses (depending on the number of drives in the jukebox) to the jukebox.

  • Page 45: Setting The Lun Mode

    Chapter 3. Product Configuration and Operation NOTE After you change an address, you may have to restart your computer for the new addresses to be recognized. The new settings can be saved to flash ROM by power cycling the jukebox. This allows the settings to be recovered if the jukebox is powered off for more than ten days.

  • Page 46: Default Lun Settings

    Large Optical Disk (RW555/RW557) Library NOTE Check host system documentation and jukebox application software instructions to verify that the use of LUNs is supported. Also, attaching multiple devices using LUNs may affect the performance of those devices. Table 3–5 shows the default SCSI address and LUN settings when LUN mode is turned on.
  • Page 47 Chapter 3. Product Configuration and Operation Table 3–6 LUN Mapping if "DRVs BUS 1" SCSI Address is Changed BUS 1 LUN MODE ON SCSI ID JKBX ID DRV 1 ID DRV 2 ID DRV 3 ID DRV 4 ID DRV 5 ID* DRV 6 ID* *may or may not be included in some RW555 models **may or may not be included in some RW557 models...
  • Page 48 Large Optical Disk (RW555/RW557) Library NOTE After you change an address you may have to restart your computer for the new addresses to be recognized. The new settings can be saved to flash ROM by power cycling the jukebox. This allows the settings to be recovered if the jukebox is powered off for more than ten days.

  • Page 49: Control Panel Operation

    Chapter 3. Product Configuration and Operation Control Panel Operation Figure 3–6 The Jukebox Control Panel and Mailslot EK–RW55L–SM. B01 3–19...

  • Page 50: Using Selection Buttons

    Large Optical Disk (RW555/RW557) Library 1) Mailslot Used to load and unload optical disks. 2) Selection Buttons Pressed to perform the following operations: loads disks into the jukebox LOAD ejects disks from the jukebox EJECT scrolls the display choice backward PREV by one scrolls the display choice forward by...

  • Page 51: Understanding Display Window Messages

    Chapter 3. Product Configuration and Operation 3.3.2 Understanding Display Window Messages The display window shows you the operations you may select. (To select an option press ENTER .) A description of each operation is given below. Instructions for using and setting operations are given in the following sections. (See Figure 3–7 on the following page and the note below.) 3.3.2.1 First Level Messages –...

  • Page 52: Jukebox Display Menu Tree

    Large Optical Disk (RW555/RW557) Library Figure 3–7 Jukebox Display Menu Tree–4X Drives PREV/NEXT READY ADMIN * (See “Setting a New ENTER Administration Menu PSWD 000 000 Password.”) ENTER PREV/NEXT CONFIG * TEST * INFO * SCSI IDS * EXCHANGE DEMO REVISION RECOVERY ON/OFF VIEW ID’S *...

  • Page 53: Setting The Scsi Ids

    Chapter 3. Product Configuration and Operation 3.3.3 Setting the SCSI IDs READY ADMIN * SCSI ID’S * The optical jukebox has the option of running in SCSI LUN (Logical Unit Number) Mapping Active mode which allows you to assign a single SCSI address to the jukebox and then access the jukebox controller and drives using logical unit numbers.

  • Page 54: Setting The Lun Mapping Active Mode

    Large Optical Disk (RW555/RW557) Library NOTE After you change an address you may have to restart the computer for the new addresses to be recognized. The new settings can be saved to ROM by power cycling the jukebox. This allows the settings to be recovered if the jukebox is powered off for more than ten days.

  • Page 55: Default Lun Settings

    Chapter 3. Product Configuration and Operation NOTE Check with the system administrator to verify that the use of LUNs is supported. Also, attaching multiple devices using LUNs may affect the performance of those devices. When LUN mode is set to "ON" the SCSI addresses of the jukebox controller and drives are mapped internally as follows: (To view the SCSI addresses, see "Viewing the SCSI Addresses"...

  • Page 56: Viewing The Current Scsi Address Settings

    Large Optical Disk (RW555/RW557) Library You may now view the SCSI ID and LUN numbers using VIEW ID’S * , or set a new SCSI ID number using . (See the following two sections.) SET ID’S * NOTE A three-part numerical password is required to access any options beneath ADMIN* Instructions for entering this password are given in the section, "Entering the Administration Menu Password"...

  • Page 57: Changing The Current Scsi Address Settings

    Chapter 3. Product Configuration and Operation until SCSI ID’S * displays, and then press 2. Press NEXT ENTER 3. Press NEXT until VIEW ID’S * displays, and then press ENTER JKBX ID # LUN # , or DRV # ID # LUN # JKBX 0 D1-6 ID # displays.
  • Page 58 Large Optical Disk (RW555/RW557) Library NOTE A three-part numerical password is required to access any options beneath ADMIN* Instructions for entering this password are given in the section, "Entering the Administration Menu Password" in this chapter. 2. Press NEXT until SCSI ID’S * displays, and then press ENTER...

  • Page 59: Setting A Configuration Option

    Chapter 3. Product Configuration and Operation NOTE After you change an address you may have to restart your computer for the new addresses to be recognized. The new settings can be saved to ROM by power cycling the jukebox. This allows the settings to be recovered if the jukebox is powered off for more than ten days.

  • Page 60: Configuration Choices

    Large Optical Disk (RW555/RW557) Library Descriptions of the available configurations are shown in Table 3–10. Table 3–10 Configuration Choices Config Name Description RECOVERY ON/OFF Toggles between ON and OFF. If the configuration is set to ON, the jukebox will attempt to recover from any errors encountered;...
  • Page 61 Chapter 3. Product Configuration and Operation Table 3–10 Configuration Choices (continued) Config Name Description NEW PASSWORD Allows changing the security code through the control panel. The password allows access to configurations, tests, and information logs. Setting the security code is explained in "Setting a New Security Code"...

  • Page 62: Loading An Optical Disk Into The Jukebox

    Large Optical Disk (RW555/RW557) Library Loading an Optical Disk into the Jukebox NOTE Disks should be labeled before loading them into the jukebox. Some software packages require that disks be inserted and removed by using instructions in the software. Check with the system administrator to determine if the software they are using manages the files in the jukebox.
  • Page 63 Chapter 3. Product Configuration and Operation 1. With READY LOAD * , or EJECT * displayed, press LOAD on the jukebox control panel. (If none of these messages is displayed, press until CANCEL displays.) READY 2. When the mailslot opens, insert an optical disk into the mailslot so that Side A of the optical disk is facing up and the shutter end of the disk goes in first.

  • Page 64: Ejecting An Optical Disk From The Jukebox

    Large Optical Disk (RW555/RW557) Library NOTE ( continued • If you get a RESERVED message, a security option has been set that prevents disks from begin loaded into, or removed from, the jukebox. (See "Setting a Security Option in this chapter.) •...
  • Page 65 Chapter 3. Product Configuration and Operation Initially, EJECTING displays. When the disk has been moved into the mailslot displays. EJECT * 4. Remove the optical disk from the mailslot. You may now eject additional disks by pressing the key and then following steps 2 EJECT ENTER through 4 until all disks that you wish to eject are removed.

  • Page 66: Entering The Administration Menu Password To Enter Admin

    Large Optical Disk (RW555/RW557) Library Entering the Administration Menu Password to Enter the ADMIN Level A numeric password is required to access options beneath menu of the ADMIN * jukebox. A three-part password of 000-000-000 was set at the factory. Consider changing the password so that only authorized persons can access the jukebox and change operation settings on the jukebox.

  • Page 67: Changing The Administration Menu Password

    Chapter 3. Product Configuration and Operation Changing the Administration Menu Password NOTE Don't forget your password. If you forget it, only your service representative reset password to the factory setting so you can set a new one. 1. Follow the steps on the previous page to enter the existing or factory-set password.

  • Page 69: Troubleshooting And Diagnostics

    Troubleshooting and Diagnostics This chapter describes troubleshooting procedures and diagnostic routines. Understanding the Troubleshooting Process When there are errors in autochanger movements, two main approaches are available to get information and to run exerciser tests. The approach usually depends on whether the error encountered was a hard error or whether it was a soft (intermittent, recoverable) error.

  • Page 70: How "Possible Causes" Should Be Evaluated

    Large Optical Disk (RW555/RW557) Library Figure 4–1 The Autochanger Returns Suspect FRUs Problem Internal Selftests Most likely FRU B Less likely FRU C NOTE This test sequence returns possible failed FRUs only if there has been a hard failure. The test sequence will NOT find a failure from which a recovery was made.

  • Page 71: Reading Logs From The Control Panel

    Chapter 4. Troubleshooting and Diagnostics Figure 4–2 Evaluating Suspect FRUs Your thought process: Internal diagnostics give you: Most likely FRU B FRU Indicates an AREA to check • ASK–What interacts with this FRU/AREA? Less likely FRU C • EXERCISE as necessary •...

  • Page 72: Information Logs

    Large Optical Disk (RW555/RW557) Library 4. Press NEXT until the name of the log you wish to access displays and then. (An "*" indicates that there are more choices beneath the displayed ENTER. choice.) 5. Press CANCEL to return to READY Descriptions of the available information logs are on the following pages.
  • Page 73 Chapter 4. Troubleshooting and Diagnostics Table 4–1 Information Logs ( continued Log Name Description HARD ERROR * Log of unrecoverable errors; commands did not successfully complete. Returns either “NO HARD ENTRIES” or “entry #”. (There may be multiple hard error numbers.) Press ENTER to select the hard error number you wish to view logs for.
  • Page 74 Large Optical Disk (RW555/RW557) Library Table 4–1 Information Logs ( continued Log Name Description MOTION <name> <name> indicates one of the following types of movements taking place in the jukebox at the time of the failure: • EXCHANGE • MOVE •...

  • Page 75: Getting Error Information Through The Scsi Bus

    Chapter 4. Troubleshooting and Diagnostics Getting Error Information through the SCSI Bus When there are errors in autochanger movements, two main approaches are available to get information and to run exerciser tests. The approach usually depends on whether the error encountered was a hard error or whether it was a soft or intermittent error.

  • Page 76: Operation/Installation Error Information

    Large Optical Disk (RW555/RW557) Library Operation/Installation Error Information CAUTION CYCLE POWER during troubleshooting until you are sure the system SCSI bus is INACTIVE and will REMAIN INACTIVE. Removing power while the bus is active can cause data loss and/or indeterminate bus states. Check the host system reference manuals for information on checking the status of the SCSI bus.
  • Page 77 Chapter 4. Troubleshooting and Diagnostics Table 4–2 Operation Errors ( continued Task Problem/Symptom What to do • Changing the drive Changed drive address After changing an address, address but new address is not the jukebox power and/or recognized. the host system power may need to be cycled for the new address to be recognized.
  • Page 78 Large Optical Disk (RW555/RW557) Library Table 4–2 Operation Errors ( continued Task Problem/Symptom What to do • Loading Disks Disk inserted in mailslot, but the Press CANCEL. Remove display reads LOAD ERROR or the disk from the mailslot, FAILED. and try inserting it again. CAUTION: Do not cycle the power if anything on the SCSI bus may be active.
  • Page 79 Chapter 4. Troubleshooting and Diagnostics Table 4–2 Operation Errors ( continued Task Problem/Symptom What to do • Powering on The optical disk jukebox Check to make sure the power cord won't power on. connections are tight. • Check that the power switch is ON (lower left on lower rear panel).
  • Page 80 Large Optical Disk (RW555/RW557) Library Table 4–2 Operation Errors ( continued Task Problem/Symptom What to do Power fail Jukebox power fails while a disk is CAUTION: Do not cycle the in the drive. Jukebox did NOT power if anything on the SCSI return to READY after the power bus may be active.
  • Page 81 Chapter 4. Troubleshooting and Diagnostics Table 4–2 Operation Errors ( continued Task Problem/Symptom What to do Power fail Host computer power fails After the host reboots, file and the jukebox stays on. system check ( fsck or equivalent ) any write- mounted surfaces.
  • Page 82 Large Optical Disk (RW555/RW557) Library Table 4–2 Operation Errors ( continued Task Problem/Symptom What to do • Reading/writing magneto- Can't write to the disk. Check the file system optical disks access permissions. • Check the write-protect tab on each disk side to assure write-enabled status.

  • Page 83: Recovery From Hardware Errors

    Chapter 4. Troubleshooting and Diagnostics Recovery from Hardware Errors When a hardware failure occurs, a message is displayed on the control panel. If the failure occurs during the power on sequence, DEVICE FAILED is displayed. If the failure occurs when loading a disk you may see , or .
  • Page 84 Large Optical Disk (RW555/RW557) Library Table 4–3 Hardware Errors and Recovery Procedures ( continued Error Code (hex.) Recovery Procedures Can not translate the picker and/or sense that it has moved. Picker assembly (umbilical cable, motor, sensor): Translate motor error If doesn't move at all – likely is the umbilical cable. If it moves a little but can't reach the side –...
  • Page 85 Chapter 4. Troubleshooting and Diagnostics Table 4–3 Hardware Errors and Recovery Procedures ( continued Error Code (hex.) Recovery Procedures Change the picker. Bottom thumb sensor error Change the umbilical cable. Change the controller PCA. User error. Invalid test number User error. Invalid configuration Run Init Elem Status.
  • Page 86 Large Optical Disk (RW555/RW557) Library Table 4–3 Hardware Errors and Recovery Procedures ( continued Error Code (hex.) Recovery Procedures Failed plunging cartridge into a magazine. • Put magazine in Look at the micro-move error of the failure in the error log (under INFO *, and Hardware Error in the control panel display).
  • Page 87 Chapter 4. Troubleshooting and Diagnostics Table 4–3 Hardware Errors and Recovery Procedures ( continued Error Code (hex.) Recovery Procedures • Look at the micro-move error of the failure in the error log (under INFO *, and Hardware Error in the control Test drive panel display).
  • Page 88 Large Optical Disk (RW555/RW557) Library Table 4–3 Hardware Errors and Recovery Procedures ( continued Error Code (hex.) Recovery Procedures Can not translate the picker and/or sense that it has moved. • Find translate home Run FIND XLAT HOME test from the control panel. •...
  • Page 89 Chapter 4. Troubleshooting and Diagnostics Table 4–3 Hardware Errors and Recovery Procedures ( continued Error Code (hex.) Recovery Procedures • Check that the path from the picker to the mailslot is clear. Clear mailslot path • Check that the vertical path is clear. •...

  • Page 90: Micro-Move Error Codes

    Large Optical Disk (RW555/RW557) Library Table 4–3 Hardware Errors and Recovery Procedures ( continued Error Code (hex.) Recovery Procedures • Check for correct terminator (single-ended or differential) for the type of SCSI interface chosen. External SCSI cables • Check that single-ended / differential slide switch is selecting desired interface.
  • Page 91 Chapter 4. Troubleshooting and Diagnostics Table 4–4 Micro-Move Error Codes ( continued Error Code Description (Hex) No load complete. Unexpected load complete. Unexpected cartridge in drive. No cartridge in drive. Drive put in accept failed. Drive get out accept failed. Drive eject failed.
  • Page 92 Large Optical Disk (RW555/RW557) Library Table 4–4 Micro-Move Error Codes ( continued Error Code Description (Hex) Rotate mailslot in failed. Rotate mailslot out failed. Flipped too far. Did not flip far enough. Flip side incorrect. Failed to finish a translate. Extra force needed to translate.

  • Page 93: Micro-Move Id

    Chapter 4. Troubleshooting and Diagnostics Table 4–5 Micro-Move ID ID (hex) Description Move picker transport up. Fast. Move picker transport down. Fast. Move picker transport up slowly, looking for resistance. Used in vertical find home sequence. Move picker transport down slowly, looking for resistance. Used in vertical find home sequence.
  • Page 94 Large Optical Disk (RW555/RW557) Library Table 4–5 Micro-Move ID ( continued ID (hex) Description Voltage is taken off translate motor. Slow translate to find center stack sensor. When sensor is found, the count on the translate encoder strip is noted. This count (horizontal position) is used as the center point from which the position of the other stacks is determined.
  • Page 95 Chapter 4. Troubleshooting and Diagnostics Table 4–5 Micro-Move ID ( continued ID (hex) Description Retract picker plunge assembly after putting cartridge into a magazine. Assembly is retracted just far enough that the thumbs are clear of the picker vertical path. First part of a two-step plunge move to put a cartridge into a drive.
  • Page 96 Large Optical Disk (RW555/RW557) Library Table 4–5 Micro-Move ID ( continued ID (hex) Description Short plunge to test for a cartridge in a drive when the picker contains a cartridge. If resistance is felt, this is interpreted as a cartridge in the drive. Used in an ISTAT. Plunge out.
  • Page 97 Chapter 4. Troubleshooting and Diagnostics Table 4–5 Micro-Move ID ( continued ID (hex) Description First part of a two-step move to fully retract the picker plunge assembly. Retract assembly almost all the way back. Next part of move is micro-move A6. Second part of a two-step move to fully retract the picker plunge assembly.
  • Page 98 Large Optical Disk (RW555/RW557) Library Table 4–5 Micro-Move ID ( continued ID (hex) Description Retract picker plunge assembly back far enough to release the thumbs and let them go to an unsplayed position. Used during an ISTAT, and the thumbs are being returned to an unsplayed position after contacting, grabbing, and replacing the first cartridge.
  • Page 99 Chapter 4. Troubleshooting and Diagnostics Table 4–5 Micro-Move ID ( continued ID (hex) Description Insert cartridge into a drive, just past the shutters. Distance has not been learned. Part one of a two-stage move. Used in the sequence to return a cartridge into a drive after an emergency eject during an ISTAT.
  • Page 100 Large Optical Disk (RW555/RW557) Library Table 4–5 Micro-Move ID ( continued ID (hex) Description Short plunge to put the cartridge all the way into the mailslot. Short plunge during a mailslot "get". Ducks under the mailslot rotation mechanism and positions the picker so it can move up all the way to the mailslot "get"...

  • Page 101: Running An Internal Test

    Chapter 4. Troubleshooting and Diagnostics Table 4–5 Micro-Move ID ( continued ID (hex) Description On power up, testing for motion in one direction on the plunge motor. On power up, testing for motion in the plunge motor. Opposite direction than in micro-move E7. Plunge out to clear the picker vertical path.

  • Page 102: Tests Available From The Control Panel

    Large Optical Disk (RW555/RW557) Library Table 4–6 Tests Available from the Control Panel Test Name Description EXCHANGE DEMO This test moves randomly-chosen optical disks to random storage slot locations. Do not run this test if the jukebox contains disks with actual file system data on them.
  • Page 103 Chapter 4. Troubleshooting and Diagnostics Table 4–6 Tests Available from the Control Panel ( continued Test Name Description TRANSLATE TEST Translates from side to side. No optical disks are required. FLIP TEST Makes a combination of moves with a PASS/FAIL result.
  • Page 104 Large Optical Disk (RW555/RW557) Library Table 4–6 Tests Available from the Control Panel ( continued Test Name Description WELLNESS TEST Checks out the general capability of the jukebox. Runs INIT MECHANICS and EXERCISE MECHANICS. Requires one loaded cartridge; drives and mailslot must be empty.

  • Page 105: Setting Write Verify

    Chapter 4. Troubleshooting and Diagnostics Setting Write Verify At sites where there is a possibility of a large amount of airborne contamination or where performance can be traded for greater data integrity, you should set Write Verify ON. The drive configuration data file is an ASCII text file in the drive download code.

  • Page 106: Cleaning Tools Available

    Large Optical Disk (RW555/RW557) Library On an otherwise working drive, check to see that the most current firmware code level is being used and/or that all applicable service notes have been done. The following are recommendations for preventing contamination of disks and the disk drive: •...

  • Page 107: Using The Eject Tool To Remove A Disk From The Rwz53 Drive

    Chapter 4. Troubleshooting and Diagnostics Disks may be cleaned with the Optical Disk Cleaning Kit (C1700-88800). This kit contains swabs and alcohol, cleaning instructions, and a special cartridge holder that keeps the sliding sleeve open. CAUTION Never attempt to clean the optical drive objective lens! Although disk drive cleaning kits are available, they are not approved for use with the drive in...

  • Page 109: Removal And Replacement

    Removal and Replacement This chapter describes how to remove and replace the subassemblies in the RW555/RW557 Large Optical Disk Library. Contents Tools Required and Service Access..............5–3 Replacing an Optical Drive ................5–6 Replacing the Power Supplies ............... 5–11 Replacing the Mailslot Assembly ..............5–13 Replacing the Control Panel Assembly............5–15 Replacing the Interposer PCAs..............

  • Page 110: Field-Replaceable Assemblies

    Large Optical Disk (RW555/RW557) Library Field-Replaceable Assemblies A list of field replaceable assemblies and units is located at the end of this chapter (see Section 5.20). WARNING DO NOT DISASSEMBLE the optical drive mechanism. The optical drive mechanism becomes a Class 3 laser device when disassembled.

  • Page 111: Tools Required

    Chapter 5. Removal and Replacement Tools Required The following tools are needed for the procedures described in this removal and replacement chapter: • TORX driver with the following bits: T-10, T-15, T-20, T-25 • Needle-nosed pliers • Flat-blade screwdriver Disassembly/Reassembly Procedure WARNING Disconnect the power cord before taking the jukebox box apart to prevent possible shock.

  • Page 112: Access Panels

    Large Optical Disk (RW555/RW557) Library Figure 5–1. Access Panels (1 of 2) 5–4 EK–RW55L–SM. B01...
  • Page 113 Chapter 5. Removal and Replacement Figure 5–1 Access Panels (2 of 2) EK–RW55L–SM. B01 5–5...

  • Page 114: Replacing An Optical Drive

    Large Optical Disk (RW555/RW557) Library Replacing an Optical Drive NOTE The procedure, as it is explained here, assumes a power on, on-line situation. Differences in the procedure for a power-off drive replacement will be noted as appropriate. 1. Use the access panels figures in the beginning of this chapter as a guide to removing ALL THREE right-side access panels.

  • Page 115: Online Drive Replacement Procedure

    Chapter 5. Removal and Replacement Figure 5–2 Online Drive Replacement Procedure EK–RW55L–SM. B01 5–7...
  • Page 116 Large Optical Disk (RW555/RW557) Library 3. Power on, online only: Note which drive status LED (orange) is blinking. Slide the communication switch to the left for this drive. Status LED should go ON steady immediately. Slide the communication switch to the left for the “other” good drive in the same enclosure.
  • Page 117 Chapter 5. Removal and Replacement 8. If there is a disk in the failed drive: Use a disk eject tool to remove the cartridge from the drive. NOTE Note the orientation of the disk as you pull it from the drive (Side A or B "up"). The disk must be inserted into the replacement drive in the same orientation.
  • Page 118 Large Optical Disk (RW555/RW557) Library Press NEXT or PREV to display DRIVE POWER*. Press ENTER. Press NEXT or PREV to display DRIVE<x>POWER OFF, (where DRV <x> is the number of the drive you are replacing). Press NEXT to select DRV<x>POWER ON. Press ENTER. This will supply power to the drive in the proper manner.

  • Page 119: Replacing The Power Supplies

    Chapter 5. Removal and Replacement CAUTION In the following steps, be sure to connect the drive power cable LAST. The two connectors on the drive power cable straddle the SCSI cable. 18. Connect all the drive cables to the interposer PCA; connect the drive power cable connectors LAST.
  • Page 120 Large Optical Disk (RW555/RW557) Library Figure 5–3 Power Supplies 5–12 EK–RW55L–SM. B01...

  • Page 121: Replacing The Mailslot Assembly

    Chapter 5. Removal and Replacement Figure 5–4 Mounting Screws (24/42 V power supply shown) Replacing the Mailslot Assembly 1. Use the access panels figures in the beginning of this chapter as a guide to remove the: – right-side access panels –...

  • Page 122: Mailslot Connector On Upper Interposer Pca

    Large Optical Disk (RW555/RW557) Library WARNING The picker transport encoder strip that runs from the top to the bottom of the jukebox near the mailslot has a sharp edge. Take care when working in this area. Also, the encoder strip may be easily damaged. 2.

  • Page 123: Replacing The Control Panel Assembly

    Chapter 5. Removal and Replacement Figure 5–6 Mailslot Assembly Mounting Screws Replacing the Control Panel Assembly 1. Use the access panels figures in the beginning of this chapter as a guide to remove the: – lower and middle right-side access panels –...

  • Page 124: Rear Of Control Panel Assembly

    Large Optical Disk (RW555/RW557) Library NOTE To prevent the control button panel from falling off the front of the jukebox when the control panel PCA is removed in the next step, you may want to place a strip of adhesive tape across an edge of the button panel.

  • Page 125: Replacing The Interposer Pcas

    Chapter 5. Removal and Replacement Replacing the Interposer PCAs 1. Use the access panels figures in the beginning of this chapter as a guide to remove the lower and middle right-side access panels. 2. Remove the cables from the interposer PCA. 3.

  • Page 126: Replacing The Picker

    Large Optical Disk (RW555/RW557) Library Figure 5–9 Lower Interposer PCA 5.10 Replacing the Picker 1. Use the access panels figures in the beginning of this chapter as a guide to remove the: – rear access panels – left-side access panels 2.

  • Page 127: Picker Umbilical Cable

    Chapter 5. Removal and Replacement Figure 5–10 Picker umbilical cable 3. Release the translate cable from the (right) side of the translate frame (side nearest the front of the jukebox). The cable passes through a slotted hole in the side of the frame. Depress the tension spring on the side of the translate frame to release the tension on the cable and allow you to pass the cable up through the slotted hole.

  • Page 128: Picker Translate Cable

    Large Optical Disk (RW555/RW557) Library Figure 5–11 Picker Translate Cable 4. Release the translate cable from the (left) side of the translate frame (side nearest the rear of the jukebox). Repeat step 3 for the left side of the translate frame. The cable passes through a hole in the side of the frame and into a slotted plug with a tensioner spring.

  • Page 129: Picker Translate Cable (Stowed)

    Chapter 5. Removal and Replacement Figure 5–12 Picker Translate Cable (stowed) Figure 5–13 Stopping Vertical Motor Gear Box Motion EK–RW55L–SM. B01 5–21...

  • Page 130: Picker Capture Bracket Mounting

    Large Optical Disk (RW555/RW557) Library 5. Remove the T-10 sheet metal screw that holds the capture spring down. 6. Remove the capture spring by pulling up and out. Figure 5–14 Picker Capture Bracket Mounting 7. Raise the translate frame and picker up to a point where you can comfortably access its underside.

  • Page 131: Picker Capture Bracket

    Chapter 5. Removal and Replacement Figure 5–15 Picker Capture Bracket Figure 5–16 Rotating the Picker Assembly Out of the Translate Frame EK–RW55L–SM. B01 5–23...

  • Page 132: Removing/Replacing The Translate Frame

    Large Optical Disk (RW555/RW557) Library 9. Remove whatever tool is being used in the vertical motor gear box. 10. Lower the translate frame and picker to the bottom of the jukebox. WARNING The picker vertical encoder strip has sharp edges. Use care when removing the picker. Also, the strip can be damaged if you are not careful when you lift the picker out of the translate frame.

  • Page 133: Stopping Vertical Motor Gear Box Motion

    Chapter 5. Removal and Replacement 3. Raise the translate frame up to about midpoint in the jukebox (a comfortable height for working) and hold the frame at that point by inserting a screwdriver or similar tool into the vertical motor gear box securing hole. Figure 5–18 Stopping Vertical Motor Gear Box Motion WARNING The edge of the encoder strip is sharp.

  • Page 134: Vertical Encoder Strip Mounting Peg

    Large Optical Disk (RW555/RW557) Library Figure 5–19 Vertical Encoder Strip Mounting Peg 5. Hang the encoder strip out of the way. 6. Remove the "visual locator" bracket on the (jukebox front) side of the picker translate frame. a. Remove the T-20 screw holding the bracket. b.

  • Page 135: Removing The Visual Locator Bracket

    Chapter 5. Removal and Replacement Figure 5–20 Removing the Visual Locator Bracket Figure 5–21 Picker Translate Frame Tensioners EK–RW55L–SM. B01 5–27...

  • Page 136: Translate Frame Tensioner Released

    Large Optical Disk (RW555/RW557) Library 7. Disconnect the umbilical cable on the underside of the frame. Do this before moving the translate frame down to the bottom of the jukebox in the next step. 8. Remove whatever tool has been inserted in the vertical motor gear box securing hole to release the frame.

  • Page 137: Removing/Replacing The Vertical Encoder Strip

    Chapter 5. Removal and Replacement Remove the three rope tensioners from the frame. a) Remove two T-25 long screws per rope tensioner. Start with the rope tensioner at the rear end of the frame. b) Each rope tensioner has two positioning pegs which position and seat each rope tensioner properly on the translate frame.

  • Page 138: Retaining Peg On Lower End Of The Vertical Encoder Strip

    Large Optical Disk (RW555/RW557) Library Figure 5–24 Retaining Peg on Lower End of the Vertical Encoder Strip 3. On the upper encoder strip mount: Detach the top of the encoder strip from the tension spring. Remove the strip. Figure 5–25 Upper Encoder Strip Mount 5–30 EK–RW55L–SM.

  • Page 139: Replacing The Vertical Motion Motor

    Chapter 5. Removal and Replacement 5.13 Replacing the Vertical Motion Motor 1. Use the access panels figures in the beginning of this chapter as a guide to remove the: - lower and middle rear access panels - lower and middle left-side access panels. 2.

  • Page 140: Replacing The Vertical Motor Gear Box

    Large Optical Disk (RW555/RW557) Library 5.14 Replacing the Vertical Motor Gear Box 1. Use the access panels pictures in the beginning of this chapter as a guide to remove the - - lower and middle rear access panels - lower and middle left-side access panels. 2.

  • Page 141: Pivoting The Tensioner Lever To Release Tension

    Chapter 5. Removal and Replacement Figure 5–28 Pivoting the Tensioner Lever to Release Tension 4. Release the tension on the rear rope tensioner (drive rope). Grip the rope tensioner plastic section with one hand and pull back the metal section with your other hand to release the metal securing tab seated in the plastic section.

  • Page 142: Disconnecting The Drive Rope From A Tensioner

    Large Optical Disk (RW555/RW557) Library Figure 5–30 Disconnecting the Drive Rope from a Tensioner Figure 5–31 Two Ends of the Slave Rope in the Tensioner 5–34 EK–RW55L–SM. B01...

  • Page 143: Disconnecting The 3-Rope Coupler

    Chapter 5. Removal and Replacement 6. Unhook the rope tensioner spring from drive rope end and remove the drive rope end from the rope tensioner. 7. Remove the other end of the drive rope from the rope tensioner. The drive rope will now hang loose except for where it is connected to the rope coupler.

  • Page 144: Rear Side Of Vertical Motor Gear Box

    Large Optical Disk (RW555/RW557) Library Figure 5–33 Rear Side of Vertical Motor Gear Box Figure 5–34 The Rope and Pulley System 5–36 EK–RW55L–SM. B01...

  • Page 145: Positioning The Tensioner To Mount On Translate Frame

    Chapter 5. Removal and Replacement Reassembly: When replacing the rear rope tensioner be sure that the tensioner `spring' area is positioned in such a way that it is facing you. This will insure that the rope tensioner is in the right position to fasten to the translate frame (see picture on previous page).

  • Page 146: Replacing The Controller Pca

    Large Optical Disk (RW555/RW557) Library 5.15 Replacing the Controller PCA 1. Remove power from the jukebox. 2. Use the access panels figures in the beginning of this chapter as a guide to remove the right-side access panels. 3. Remove the upper RFI panel. 4.

  • Page 147: Replacing The Power Distribution Pca

    Chapter 5. Removal and Replacement 5.16 Replacing the Power Distribution PCA Figure 5–37 Power Distribution PCA 1. Remove power from jukebox. 2. Use the access panels pictures in the beginning of this chapter as a guide to remove the lower right-side access panels. 3.

  • Page 148: Replacing The Scsi Interface/Lun Converter Pca

    Large Optical Disk (RW555/RW557) Library 5.17 Replacing the SCSI Interface/LUN Converter PCA Figure 5–38 SCSI Repeater / LUN Converter Enclosure 1. Remove power from jukebox. 2. Use the access panels figures in the beginning of this chapter as a guide to remove the lower right-side access panel.
  • Page 149 Chapter 5. Removal and Replacement Figure 5–39 SCSI Repeater / LUN Converter PCA Reassembly: Check that the jumpers on the replacement PCA are the same as shown below. Figure 5–40 SCSI Repeater / LUN Converter PCA Jumpers EK–RW55L–SM. B01 5–41...

  • Page 150: Replacing The Vertical-Path-Clear Pca

    Large Optical Disk (RW555/RW557) Library 5.18 Replacing the Vertical-Path-Clear PCA Figure 5–41 Vertical Path Clear 1. Remove power from jukebox. 2. Use the access panels figures in the beginning of this chapter as a guide to remove the lower and middle rear access panels 3.

  • Page 151: Re-Initializing The Jukebox Controller Pca Ram After Service

    Chapter 5. Removal and Replacement Figure 5–42 Vertical Path Clear PCA Mounting Screws 5.19 Re-initializing the Jukebox Controller PCA RAM After Service All the RAM on the autochanger controller PCA is kept alive through a charged capacitor, and is, therefore, relatively non-volatile. If this RAM is backed up to flash EEPROM after any changes, the values are held permanently.

  • Page 152: Variables Set By "Set Defaults

    Large Optical Disk (RW555/RW557) Library 5.19.1 Variables Set by "Set Defaults" • SCSI address of the autochanger • Configurable options set to system defaults (ROM-dependent) - whether autochanger should report recovered errors - whether autochanger should rotate mailslot inwards when in secure mode - whether autochanger should automatically initialize element status when cartridges are found in unexpected places (ROM-dependent) •...

  • Page 153: List Of Field Replaceable Units

    Chapter 5. Removal and Replacement 5.20 Field Replaceable Units (FRU) in the Library Table 5–1 is a list of FRU’s in the Large Optical Disk Library. The information includes a cross-reference between Digital and vendor part numbers, a description of the unit, the standard cost in US $, the Mean Time Between Failures for the assembly in hours (x 1000), and the repair cost in US $.
  • Page 154 Large Optical Disk (RW555/RW557) Library Table 5–1 List of Field Replaceable Units (continued) Digital P/N Vendor P/N Description Uniq R&R Std. US$ MTBF Repair (KHrs.) Cost 29-32518-01 C1100-60026 Mag. Guides 139.75 29-33376-01 C1107-60009 Umb. Feed 201.50 Thru 29-33377-01 C1107-60021 Key Pad Assy 53.63 29-33378-01 C1107-60022...
  • Page 155 Chapter 5. Removal and Replacement Table 5–1 List of Field Replaceable Units (continued) Digital P/N Vendor P/N Description Uniq R&R Std. MTBF Repair (KHrs.) Cost 29-33401-01 C1107-60166 Interposer 32.50 Cable 29-33402-01 C1107-60167 Upper Dr. Pwr. 31.20 29-33403-01 C1107-60068 Lower Dr. Pwr. 22.75 29-33404-01 C1107-60070...

  • Page 156: Recommended Service Kits

    Large Optical Disk (RW555/RW557) Library 5.21 Recommended Service Kits The initial recommended service for the optical jukebox includes the exchange parts list and the non-exchange parts list for stocking at a field-level office. NOTE This document is not necessarily revised as each part number is revised.

  • Page 157: Non-Exchange Parts

    Chapter 5. Removal and Replacement Table 5–3 Non-Exchange Parts (See Figure 5–43) FRU No. Part Number Description C1104-60x01 Half-Capacity Autochanger Controller PCA C1107-60x04 Upper Interposer PCA C1107-60x05 Lower Interposer PCA C1107-60x06 Vertical-Path-Clear PCA C1107-60x21 Operator Panel Key Pad Assembly C1107-60x22 Display PCA C1107-60x23 Vertical Motor Gearbox Assembly...
  • Page 158 Large Optical Disk (RW555/RW557) Library Table 5–3 Non-Exchange Parts (continued) C1107-60x50 Lower 5/12V Power Supply AC Input Cable C1107-60x51 Logic Power Cable C1107-60x52 Motor Power Cable C1107-60x53 Interposer Jumper Cable C1107-60x55 4X Optical Drive Power Cable (1 per 2 drives used in enclosure) C1107-60x57 Vertical Path Clear Emitter Cable with Emitters...

  • Page 159: Jukebox Exploded View

    Chapter 5. Removal and Replacement Figure 5–43 Jukebox Exploded View (1 of 6) EK–RW55L–SM. B01 5–51...
  • Page 160 Large Optical Disk (RW555/RW557) Library Figure 5–43 Jukebox Exploded View (2 of 6) 5–52 EK–RW55L–SM. B01...
  • Page 161 Chapter 5. Removal and Replacement Figure 5–43 Jukebox Exploded View (3 of 6) EK–RW55L–SM. B01 5–53...
  • Page 162 Large Optical Disk (RW555/RW557) Library Figure 5–43 Jukebox Exploded View (4 of 6) 5–54 EK–RW55L–SM. B01...
  • Page 163 Chapter 5. Removal and Replacement Figure 5–43 Jukebox Exploded View (5 of 6) EK–RW55L–SM. B01 5–55...
  • Page 164 Large Optical Disk (RW555/RW557) Library Figure 5–43 Jukebox Exploded View (6 of 6) 5–56 EK–RW55L–SM. B01...

  • Page 165: Jukebox Pulley And Rope Diagram

    Chapter 5. Removal and Replacement Figure 5–44 Jukebox Pulley and Rope Diagram EK–RW55L–SM. B01 5–57...

  • Page 166: Miscellaneous

    Large Optical Disk (RW555/RW557) Library 5.22 Miscellaneous While no special tools are required to service the optical jukebox, there are some commonly used items that may be stocked and available as an area resource. Table 5–4 Common Resource Parts Item HP Part Number 1 m (3.3 ft.) SCSI cable;...

  • Page 167: Theory Of Operation

    Theory of Operation This chapter discusses the following aspects of the robotics of the RW555IRW557 jukeboxes, the autochanger, command execution, mechanics, autochanger controller PCA, interposer PCAs, power supplies, LUN conversion, Picker and Picker Modes, Element Numbering and Slot Numbering, and optical disk drives. Autochanger Robotics 6.1.1 Movements The mechanism code of the autochanger accepts high-level SCSI commands...
  • Page 168 Large Optical Disk (RW555/RW557) Library • Seek - position the transport at a target element • Test - test for the presence of a cartridge at a target element • Actuate mailslot - rotate the mailslot assembly to perform 1/0 with the user The commands are translated into a series of moves which are basic autochanger functions.

  • Page 169: The Autochanger Controller Pca

    Chapter 6. Theory of Operation Each micro-move within a specific macro-move has a unique set of stability, performance, error recovery, force, and reliability criteria. Therefore, each micro-move is assigned a unique identification code (ID) which is used to determine how the move should be performed. The Autochanger Controller PCA The autochanger controller PCA contains the following major components: •...
  • Page 170 Large Optical Disk (RW555/RW557) Library The MICROPROCESSOR is a Motorola MC68ECOOO running at 12.288 MHz. This microprocessor controls all processes on the controller PCA such as servos, SCSI interface, and commands to the control panel. Associated with the microprocessor is clocking circuitry, RAM with standby power supplied by a capacitor, and ROM.

  • Page 171: Interposer Pcas

    Chapter 6. Theory of Operation Motor position is by returned through the vertical umbilical cable. The translate motor position is determined by a photomicro sensor on the picker PCA. The plunge motor position is determined by an optical encoder mounted on the motor itself.

  • Page 172: Lower Interposer Pca

    Large Optical Disk (RW555/RW557) Library Figure 6–4 Lower Interposer PCA The upper interposer also has additional functions: connections for the path-clear (Starwars) sensors, control panel circuitry and connection, and connections for the mailslot sensors and auxiliary sensors. An important overall function of both interposer PCAs is to apply power to the optical drives in the correct sequence and prevent "hot plugging"...
  • Page 173 Chapter 6. Theory of Operation NOTE Issues that affect optical drive handling during service. Each 5/12 power supply monitors the. power it supplies - through it’s, assigned interposer PCA - to the. fan, motors of the drives connected to that interposer PCA.

  • Page 174: Drive Numbering

    Large Optical Disk (RW555/RW557) Library NOTE ( CONTINUED The only step for service. is to remember is to make sure that, even if the application designates that the. two. drives served by the lower PCA have failed, remove fan power (i.e. replace) only one drive at a time.
  • Page 175 Chapter 6. Theory of Operation Circuitry for the motorized mailslot is also on the upper interposer PCA. The mailslot cable (third connector up front the bottom on the left side) carries pulse- width-modulation outputs to the motor on the mailslot. Mailslot sensor inputs also are received on this cable.

  • Page 176: Power Supplies

    Large Optical Disk (RW555/RW557) Library Power Supplies There are three autoranging power supplies. Two identical supplies provide +5 volts at 15 amperes and +12 volts at 10 amperes (peak). This supply powers the drives and the autochanger logic. The other supply provides +24 and +42 volts, both at 4 amperes (peak). This supply powers the vertical motion motor (+42 V) and the power on sequence relay (+24V).

  • Page 177: Component Description

    Chapter 6. Theory of Operation 6.5.1 Component Description Internally, the jukebox has a single-ended SCSI bus. This PCA has connectors for both single-ended and differential cables. A differential SCSI connection is converted to single-ended SCSI. Figure 6–7 SCSI Repeater / LUN Converter PCA Refer to the diagram above to locate the components discussed in the following paragraphs.
  • Page 178 Large Optical Disk (RW555/RW557) Library Jumper J7 - selects Bank 0 or Bank 1. Multiple banks will be implemented in future implementations of this PCA that will support more optical drives. Default is Bank 1 (pins 1 and 2 connected). Boot ROMs, U1 and U6 are located on the lower right side of the PCA.

  • Page 179: Logical Unit Number Mapping Capability

    Chapter 6. Theory of Operation NOTE It is important to provide proper termination on whichever external SCSI bus (single-ended or differential) that is in use. If the SCSI bus is not being daisy-chained to another peripheral (and terminated there) then termination must be provided at this PCA.

  • Page 180: Scsi Repeater/Lun Converter Passthrough Mode (6 Drive)

    Large Optical Disk (RW555/RW557) Library The LUN converter function operates in either of two modes: Passthru (no LUN mapping - default) and LUN mapping active. Passthru Mode- Addressing Each device has its own SCSI ID. The IDs are configured on the control panel. The table below shows the default addressing.

  • Page 181: Lun Mapping Active - Six Drives

    Chapter 6. Theory of Operation 6.5.2.1 LUN Mapping Active Mode, Allows more than one jukebox on the same SCSI bus. LUN Addressing Each device in the jukebox has a LUN assigned under a single jukebox device ID. The device ID and its LUN addressing are configured using the control panel, The LUNs, however, are predefined and not configurable.

  • Page 182: Scsi Repeater/Lun Converter Mapping Active Mode (6 Drive)

    Large Optical Disk (RW555/RW557) Library Figure 6–9 SCSI Repeater / LUN Converter Mapping Active Mode (6 drive) The LUN of the addressed device is specified though an IDENTIFY message immediately following the SELECTION procedure (setting the LUN in the command Control Data Byte is not supported). After the LUN is set, commands, data, status, and messages are routed to the appropriate device.

  • Page 183: Default Scsi And Lun Settings

    Chapter 6. Theory of Operation The optical jukebox has the option of running in SCSI LUN (logical unit number) mode which allows you to assign from one to three SCSI addresses (depending on the number of drives in the jukebox) to the jukebox. The jukebox controller and drives can then be accessed using logical unit numbers.

  • Page 184: Single-Picker Mode

    Large Optical Disk (RW555/RW557) Library NOTE After you change an address, you may have to restart your computer for the new addresses to be recognized. The new settings can be saved to flash ROM by power cycling the jukebox. This allows the settings to be recovered if the jukebox is powered off for more than ten days.

  • Page 185: Element Numbering

    Chapter 6. Theory of Operation 5. Grab the cartridge from the slot. 6. Move to the drive. 7. Insert the cartridge into the drive. Element Numbering Element numbers designate any location that a disk can occupy in the jukebox. Table 6–4 Element numbering in the jukebox Element Name Element Number Optical drives...

  • Page 186: Slot And Element Numbering Sequence (1 Of 3)

    Large Optical Disk (RW555/RW557) Library The following diagrams and discussion explain the sequence in which the slots are numbered. Knowing this sequence allows you to correlate slot numbers, as displayed from the control panel, and element numbers. At the end of the explanation of sequencing, there is a picture of the decal that is mounted inside the jukebox left panels.

  • Page 187: Slot And Element Numbering Sequence (2 Of 3)

    Chapter 6. Theory of Operation Slot I (element 3 1) starts at the lower left as you look at the stacks. SLOT numbering increases up to 72, drops down to continue with 73 up to 104, drops down again to continue with 105 and goes up to 174.

  • Page 188: Slot And Element Numbering Sequence (3 Of 3)

    Large Optical Disk (RW555/RW557) Library The pattern covers the slots from 175 to 208–passing just below the limited- access slots at the top. Figure 6–13 Slot and Element Numbering Sequence (3 of 3) 6–22 EK–RW55L–SM. B01...

  • Page 189: Slot Numbering Decal

    Chapter 6. Theory of Operation The sequence continues with 209 through 229 across the bottom – just below the limited-access slots on the bottom. Finally, back up to the top to include slots 230 through 235. Figure 6–14 Slot Numbering Decal A decal that shows the slot numbering is inside the left-side panels on the jukebox.

  • Page 190: Limited Access Slots

    Large Optical Disk (RW555/RW557) Library 6.8.1 Limited Access Slots Because of physical constraints, some physical slots can have either limited access or can not be accessed at all. At the lower limit of picker transport travel, there are 3 slots, 1 in each stack, that can only be accessed by the lower picker.

  • Page 191: Limited Access Slots At The Top Of The Stacks

    Chapter 6. Theory of Operation These limitations on picker access to these upper and lower-limit slots will normally be transparent to you. The only operation these access limitations affect is dual-picker high-speed exchanges. The jukebox controller knows the limitations of these slots and will not attempt to do these types of exchanges when using them.

  • Page 192: One-Finger Grab Recovery Areas At The Bottom Of The Stacks

    Large Optical Disk (RW555/RW557) Library Figure 6–17 One-Finger Grab Recovery Areas at the Bottom of the Stacks We have placed decals next to these slots to remind you that you should never manually load disks in the two top slots in the center and right-hand stacks. Figure 6–18 One-Finger Grab Recovery Areas at the Top of the Stacks 6–26 EK–RW55L–SM.

  • Page 193: Multifunction Optical Drives

    Chapter 6. Theory of Operation 4X Multifunction Optical Drives 4X-Drive Mechanism Figure 6–19 4X-Drive Functional Diagram There are four major sub-assemblies within the optical drive: the controller PCA, servo PCA, loader mechanism, and the optical head. EK–RW55L–SM. B01 6–27...

  • Page 194: Controller Pca

    Large Optical Disk (RW555/RW557) Library 6.9.1 Controller PCA The controller PCA is a microprocessor-based collection of digital electronics that handles functions performed by a SCSI controller, a data buffer, and a formatter/sequencer. 6.9.2 SCSI Controller The SCSI controller provides the SCSI interface connection to the host computer. This interface consists of both the electrical signals and the firmware which decodes the various commands and messages on the SCSI bus and instructs the drive to take appropriate action.

  • Page 195: Read And Write Channel Electronics

    Chapter 6. Theory of Operation Also on the servo PCA are control electronics for the loader assembly. Included are drivers for the loader and spindle (speed control) motors, sensor circuitry for the cartridge loaded and write protect detectors, LED drivers for the control panel LEDs, and control circuitry for the bias magnet subassembly of the loader mechanism.

  • Page 196: Drive Mechanism

    Large Optical Disk (RW555/RW557) Library 6.10.3 4X-Drive Mechanism Figure 6–20 4X-Drive Functional Diagram 6.10.4 Controller The controller is a highly-specialized integrated circuit that handles SCSI control, data buffering, and encode/decode. The data buffer function provides a buffer to speed match transfers to and from the host computer and the optical disk.

  • Page 197: Cpu

    Chapter 6. Theory of Operation 6.10.5 CPU The central processing unit for all drive functions including the loading motor. 6.10.6 Gate Array This component contains circuitry to interconnect the major blocks (CPU, DSP, write/read channel). 6.10.7 DSP (Digital Signal Processor) The DSP controls the following servos: spindle motor/speed, laser power control, track following, seek/position maintenance, focus actuation, fine position actuation, and coarse position actuation.

  • Page 198: Optical Disk Layout And Error Correction

    Large Optical Disk (RW555/RW557) Library The actuators and laser diode (and associated detectors) are on a small PCA on the optical head assembly. The main components are as follows: • Auto Laser Power Control (ALPC) Controls the intensity and duration of the laser beam for erase, write. and read operations.

  • Page 199: User Zone Layout

    Chapter 6. Theory of Operation Figure 6–21 Optical Disk Layout 6.11.3 User Zone Layout The User Zone consists of Defect Management Areas (DMAs), a User Area and a Slipping Area. The DMAs contain information on the organization of the User Area into User Groups and Spare Groups.
  • Page 200 Large Optical Disk (RW555/RW557) Library 650-Mbyte Disk User and Spare Groups Figure 6–22 shows the User Zone Layout for 650-Mbyte disks. The values for g, m, and n are variable depending on how the disk is formatted. 1.3 Gbyte Disk User and Spare Groups Figure 6–24 and Figure 6–25 show the User Zone Layout for 1.3-Gbyte, for both g=1 (single data area and one spare area) and g=16 (16 data areas and 16 spare areas), respectively.
  • Page 201 Chapter 6. Theory of Operation Figure 6–22 User Zone Layout for 650-Mbyte Media EK–RW55L–SM. B01 6–35...

  • Page 202: User Zone Layout For 1.3-Gbyte Media, G=1

    Large Optical Disk (RW555/RW557) Library Figure 6–23 User Zone Layout for 1.3-Gbyte Media, g=1 6–36 EK–RW55L–SM. B01...

  • Page 203: User Zone Layout For 1.3-Gbyte Media, G=16

    Chapter 6. Theory of Operation Figure 6–24 User Zone Layout for 1.3-Gbyte media, g=16 EK–RW55L–SM. B01 6–37...

  • Page 204: Values For N And M For 1.3 Gbyte With G=1 6 (1024 Media)

    Large Optical Disk (RW555/RW557) Library Table 6–5 Values for n and m for 1.3-Gbyte with g=1 6 (1,024 media) Band Data Band 0 27064 Data Band 1 28815 Data Band 2 30498 Data Band 3 32198 Data Band 4 33898 Data Band 5 35581 Data Band 6...

  • Page 205: Physical Revolution To Logical Track Layout

    Chapter 6. Theory of Operation Table 6–6 Physical Revolution to Logical Track Layout Zone or Band Physical Revolution Range Logical Track lnner SFP (-369, -161) (-369, -161) Inner Mfg. (-128, -33) (-128, -33) Data Band 0 (0, 1349) (0, 1599) Data Band 1 (1350, 2699) (1600, 3299)

  • Page 206: User Zone Layout For 2.3-Gbyte Media, 512 Bytes/Sector

    Large Optical Disk (RW555/RW557) Library Figure 6–25 User Zone Layout for 2.3 Gbyte Media, 512 Bytes/Sector 6–40 EK–RW55L–SM. B01...

  • Page 207: 1024 Bytes/Sector Disk Structure

    Chapter 6. Theory of Operation Table 6–7 4X 1024 Bytes/Sector Disk Structure Zone # Start Start Track Track Tracks LBAs 2948 2944 50048 50047 2974 5873 2900 49300 50048 99347 5899 8753 2855 48535 99348 147882 8779 11588 2810 47770 147883 195652 11614...
  • Page 208 Large Optical Disk (RW555/RW557) Library Table 6–8 4X, 512 Bytes/Sector Disk Structure Zone # Start Start Track Track Tracks LBAs 3229 3225 99975 99974 3252 6421 3170 98270 99975 198244 6444 9557 3114 96534 198245 294778 9580 12637 3058 94798 294779 389576 12660...

  • Page 209: Technical Comparison Of 1X, 2X, And 4X Optical Drives

    Chapter 6. Theory of Operation Table 6–9 Technical Comparison of 1 X, 2X, and 4X Optical Drives bytes per sector 1,024 (512) 1,024 (512) 1,024 (512) track pitch 1.60 1.39 1.15 spiral direction outward outward Inward data encoding (2,7)RLL (2,7) RLL (1,7)RLL channel bits per byte raw bytes per sector...

  • Page 210: Drive Defect Management

    Large Optical Disk (RW555/RW557) Library 6.12 Drive Defect Management The RWZ53 drive support the defect management scheme specified by ISO 10089A and ISO 11560, and ISO/IEC 14517. Each DMA consists of a: • disk definition structure (DDS) • primary defect list (PDL) •...

  • Page 211: Slip Sparing Algorithm

    Chapter 6. Theory of Operation The Slipping Area is a portion of the User Zone used by the slip sparing - algorithm. Defects found during certification are excluded from use. The user accessible space is slipped by a corresponding number of sectors into the slip - area..

  • Page 212: Replacement Sparing Algorithm

    Large Optical Disk (RW555/RW557) Library 6.12.2 Replacement Sparing Algorithm The replacement sparing algorithm is intended to manage defective sectors found after initialization. As was mentioned earlier, the DDS allows for a number of sectors to be reserved for future use by the replacement sparing algorithm, These "spare sectors" reside in the Spare Groups, and are referred to via entries in the SDL.

  • Page 213: The Scsi Interface

    Chapter 6. Theory of Operation Table 6–10 shows the error thresholds for the RWZ53 (4X) optical drive. The sector IDs column refers to the minimum number of sector IDs that must be read correctly for the corresponding operation to be deemed successful. The ECC level column refers to the maximum number of bytes per interleave that require correction in order for the corresponding operation to be deemed successful.

  • Page 214: Single-Ended And Differential Scsi Interface

    Large Optical Disk (RW555/RW557) Library 6.13.1 Single-Ended and Differential SCSI Interfaces The SCSI interface on this jukebox accepts either single-ended or differential, SCSI buses. Internally, the jukebox is a single-ended interface. A single-ended external connection is repeated onto the jukebox bus. A differential external; connection is converted into the internal single-ended bus (and also repeated).
  • Page 215 Errors Noted (please include page, paragraph, table or figure number) Return Address: Name Phone Title Customer Research Response Center Company Digital Equipment Corporation 334 South Street, SHR3-2/S27 Street Address Shrewsbury, MA 01545 Mail Stop City State Country (if other than USA)

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