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EK-RWZ21-MG-001

August 1992

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Document:	RWZ21 Magneto-Optical Disk Unit Maintenance Guide
Order Number:	EK-RWZ21-MG
Revision:	001
Pages:	9
Original Filename:

OCR Text

RWZ21
Magneto-Optical Disk Unit
Maintenance Guide
EK–RWZ21–MG.001
Contents
1. Error Code

•

Sense Key

•

Additional Sense Code

2. Parts List

August 1992
© Digital Equipment Corporation Japan 1992.
All Rights Reserved.
The postpaid READER’S COMMENT form on the last page of this document requests the user’s
critical evaluation to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation.
DEC
DECUS
PDP
VAX

VAXBI
VAXcluster
VAXELN
VMS

VT
ULTRIX
VAXstation
DECstation

Buffer Memory
(DRAM)
64KB with parity

Drive Interface
Driver/Receiver

Digital
Peripheral
(CXD1189R)

Encoder/
Decoder
(CXD1188R)

CPU
(MC68HC11)

RWZ21 Block Diagram

Drive Interface
Driver/Receiver

ODI
(Drive Interface)

Drive Interface
Controller
(CXD8195Q)

SRAM
32KB

Error Correction
Processor
(AM95C94)

Controller Block

SCSI
Controller
(CXD1185AQ)

From/To Host

SCSI
Single
Ended

F-EPROM
64KB

Buffer Memory Manager
(AM95C96)

MPU
uPD70320(V25)

Drive Block

RAM

Servo A/D
(CXA1482Q)

Servo PIN
Buffer

Optics
(static)

Optics
(separated)

Servo
Digital
(CXD8132Q)

RF PIN Buffer

Data
Separator
(CXA1476R)

Digital Signal
Processor
DSP56000

Laser Driver

Spindle Motor

Automatic Laser
Power Control
(CXD8133R)

Spindle
Driver

Bias Magnet

D/A

Position
Sensor

Slide,
Focus,
Tracking
Drivers

1
Error Code
1.1 Sense Key
The Sense Key in the Extended Sense Data reports the detected error or the drive
condition. The following Sense Keys are implemented in the RWZ21.
Sense Key

Description

NO SENCE Indicates that there is no specific sense key information to be
reported for the designated logical unit. This sense key is returned when
the command is completed successfully.

RECOVERED ERROR Indicates that the last command was completed
successfully with some recovery action performed by the SMO-C301.

NOT READY Indicates that the logical unit cannot be accessed.

MEDIUM ERROR Indicates that the command terminated with an
unrecovered error condition that was caused by the medium defect.

HARDWARE ERROR Indicates that the controller detected a hardware
error.

ILLEGAL REQUEST Indicates that there was an illegal parameter in
the command descriptor block or in the additional parameters supplied as
data for some commands.

UNIT ATTENTION Indicates that the medium has been loaded, the unit
has been reset, or the Mode Select parameters has been changed.

DATA PROTECT Indicates that a command that writes the medium
cannot be performed by the Write Protect condition of the medium
cartridge switch.

COPY ABORTED Indicates a COPY or COPY AND VERIFY command
was aborted due to an error condition on the source device, the destination
device, or both.

ABORTED COMMAND Indicates that the SMO-C301 aborted the last
command. The initiator may be able to recover by trying the command
again.

Error Code 1–1

Error Code
1.2 Additional Sense Code

1.2 Additional Sense Code
The Additional Sense Code indicates the detailed error information or the device
condition. The followings are the implemented Additional Sense Codes and the
related Sense Key.

1–2 Error Code

Code

Description

00H

No Additional Sense Information (NO SENSE)
There is no error to repeat.

02H3

No SOID Command Complete (HARDWARE ERROR)
SOID command complete was not returned from the drive unit.

03H

Write Fault (HARDWARE ERROR)
Write command failed. The logical block address where the fault was
detected may be returned in the Logical Block Address field or the
Information Byte field of the sense data.

04H

Drive Not Ready (NOT READY)
The READY signal of SODI was negated. (The medium in the drive unit
is not spun up, the focus or slide servo was unlocked.)

05H

Drive Not Selected (NOT READY)
The drive unit is not selected.

07H

Multiple Drives Selected (HARDWARE ERROR)
Multiple drives responded for a same drive number.

08H

Logical Unit Communication Failure (HARDWARE ERROR)
Error was detected during the communication between the drive unit and
the controller unit(e.g. parity error).

09H

Track Following Error (HARDWARE ERROR)
Still-jump failed and the optical head couldn’t stay in the same track.

0AH4

No Disk (NOT READY)
A medium is not inserted into the drive unit.

0BH4

Load/Unload Failure (HARDWARE ERROR)
A failure was detected during loading or unloading the cartridge.

0CH4

Spindle Failure (HARDWARE ERROR)
The spindle servo was not locked with the reference signal and the
medium was not rotated correctly.

0DH4

Focus Failure (HARDWARE ERROR)
The focus servo was missed. Issue START/STOP UNIT command with its
Start bit set to 1 to restart the drive.

0EH4

Tracking Failure (HARDWARE ERROR)
Tracking servo couldn’t be locked.

0FH4

Bias Magnet Failure (HARDWARE ERROR)
The bias magnet of the drive failed.

10H

ID CRC Error (HARDWARE ERROR)
The controller detected the error of ID cyclic check code transferred from
the drive unit.

11H

Unrecovered Read Error of Data Blocks (MEDIUM ERROR)
The data errors couldn’t be corrected by the error correction code. The
logical block address where the fault was detected may be returned in the
Logical Block Address field or Information Byte field of the sense data.

15H

Seek Positioning Error (HARDWARE ERROR)
Seeking to the specified track failed after a few retrials.

These codes are newly added or have a different meaning from that of CCS Rev 4B.

Error Code
1.2 Additional Sense Code
Code

Description

18H

Recovered Read Data with ECC Procedure (RECOVERED ERROR)
There was an interleave which contains 7 or 8 bytes in error. Error
correction succeeded.

20H

Invalid Command Operation Code (ILLEGAL REQUEST)
The specified command operation code is not implemented or an invalid
command is requested.

21H

Illegal Logical Block Address(ILLEGAL REQUEST)
The specified logical block address was outside the valid area.

23H5

Illegal Function for Medium Type (ILLEGAL REQUEST)
The format parameter is invalid for the medium type.

24H

Illegal Field in CDB (ILLEGAL REQUEST)
There was an error in the received Command Descriptor Block(CDB). This
Additional Sense Code is returned in the following situations.
Reserved field in CDB is not zero.
Invalid combination of parameters (e.g. Both the eject bit and the
start bit are set in the START/STOP UNIT command).
Illegal parameter at that state(e.g. A command using the relative
address(RelAdr) bit is set to 1 is issued after the command that link
bit is not set to 1 ).

25H

Invalid LUN (ILLEGAL REQUEST)
LUN 2 through 7 is specified or the specified LUN(0 or 1)does not respond
to the selection from the controller unit.

26H

Invalid Field in Parameter List (ILLEGAL REQUEST)
There was an error in the received parameters.

27H

Write Protected (DATA PROTECT)
Erasing or writing was aborted because the write protect switch of the
cartridge is on.

28H

Medium Changed (UNIT ATTENTION)
The medium was loaded. This Additional Sense Code is used to notify the
initiator that the medium has been changed since the execution of the last
command. This code implies Mode Select Parameters changed(2AH).

29H

Power On or Reset or Bus Device Reset Occurred (UNIT
ATTENTION)
This Additional Sense Code is used to notify the initiator that the RESET
condition has happened since last command. This code implies Mode
Select Parameters changed.

2AH

Mode Select Parameters Changed (UNIT ATTENTION)
This Additional Sense Code in used to notify the initiator that the mode
select parameters have been changed since the execution of the last
command(2AH).

30H

Incompatible Cartridge (MEDIUM ERROR)
ID hole of the cartridge is invalid.

31H6

Medium Format Corrupted (MEDIUM ERROR)
PEP, SFP, the format information sector in the CDA, or DDS is invalid.

32H

No Defect Spare Location Available (MEDIUM ERROR)
The number of defect sectors listed in the PDL and SDL exceeded 1024, or
the number of defect sectors listed in the SDL exceeded the specified value
calculated by the number of groups and spare blocks per group.

These codes are newly added or have a different meaning from that of CCS Rev 4B.

Error Code 1–3

Error Code
1.2 Additional Sense Code
Code
38H

Description
Recovered with Automatic Reallocation (RECOVERED ERROR)
Automatic write reallocation is executed successfully.

39H6

Automatic Reallocation Failure (MEDIUM ERROR)
Automatic write reallocation failed after retrying three times.

3AH6

Defect List Update Failure (MEDIUM ERROR)
Updating of the defect table failed after the successful sparing of the data
sector.

3DH6

Defect List Not Available (MEDIUM ERROR OR RECOVERED
ERROR)
Specified defect list is not available.

42H

Power On Diagnostic Failure (HARDWARE ERROR)
Power on diagnostic failed.

43H

Message Reject Error (HARDWARE ERROR OR ABORTED
COMMAND)
The command was aborted because the initiator rejected the message from
the SMO-C301 by issuing MESSAGE REJECT message.

44H

Internal Controller Error (HARDWARE ERROR OR ABORTED
COMMAND)
The controller detected an related to the controller hardware or firmware.

47H

SCSI Interface Parity Error (HARDWARE ERROR OR ABORTED
COMMAND)
The command was aborted due to parity error on the SCSI bus.

48H

Initiator Detected Error (HARDWARE ERROR OR ABORTED
COMMAND)
The command was aborted because the INITIATOR DETECTED ERROR
message was sent from the initiator.

49H

Inappropriate/Illegal Message (HARDWARE ERROR OR ABORTED
COMMAND)
The command was aborted due to the inappropriate illegal message from
the initiator.

80H7

Limited Laser Life (HARDWARE ERROR)
Over-current is detected in the laser diode or the laser power is below the
lower limit.

81H7

Focus Coil Over-current Failure (HARDWARE ERROR)
Over-current is detected in the focus coil of the optical pick up. The coil is
protected by a relay.

82H7

Tracking Coil Over-current Failure (HARDWARE ERROR)
Over-current is detected in the tracking coil of the optical pick up. The coil
is protected by a relay.

83H7

Temperature Alarm (HARDWARE ERROR)
Internal temperature of the drive exceeds the limit(55 degree C).

These codes are newly added or have a different meaning from that of CCS Rev 4B.

1.3 Notice
Test 75 in VAX ROM diagnostics is not for the RWZ21. Therefore the test may
fail.

1–4 Error Code

2
Parts List
The tables in this chapter include a parts list for RWZ21, a SCSI cable list, and
power cord list.
Table 2–1 RWZ21 Parts List
Part name

Order number

Magneto-Optical Disk Unit

RWZ21-AA

RWZ21 Magneto-Optical Disk Unit User’s Guide

EK-RWZ21-UG

Optical disk cartridge

RWX4K-01

MOA-L33 Lens cleaning cartridge kit

RWX2H-AA

MOA-F33 Air Filter

RWX2F-AA

MOA-D31 Manual disk cleaner for RWX4K-01

RWX2M-AA

SCSI Terminator

12-30552-01

Source

Source
Part of the basic RWZ21
Available as an option

Table 2–2 SCSI Cable List
Connection

Order number

Source

VAXstation3100—RWZ21

BC56H-03 (3 feet)

DECstation3100—RWZ21

BC56H-03 (3 feet)

DECstation5000—RWZ21
PCTAZ for DECpc—RWZ21

BC09D-06 (6 feet)

RWZ21—RWZ21
PCXAZ, PC4XR-CC, PCTAZ-AA for DECpc—
RWZ21

BC19J-1E/06 (1.5/6 feet)

Source
Part of the basic RWZ21
Available as an option
Provided with the DECstation 5000.

Parts List 2–1

Parts List

Table 2–3 Power Cord List
Order number

Description

BN19A-2E

UK/Ireland-240 Vac

BN19C-2E

Central Europe-220 Vac

BN19E-2E

Switzerland-220 Vac

BN19H-2E

Australia/New Zealand-240/230 Vac

BN19K-2E

Denmark-220 Vac

BN19M-2E

Italy-220 Vac

BN19S-2E

India,South Africa-220 Vac

BN19U-2E

Israel-240 Vac

Source
Part of the basic RWZ21
Available as an option

2–2 Parts List

Source