IBM pSeries 690 Service Manual page 494

Error Code Description
21A0 0002 SCSI DASD: test unit ready failed; sense data
available
21A0 0003 SCSI DASD: send diagnostic failed; sense
data available
21A0 0004 SCSI DASD: send diagnostic failed - devofl
command
21E0 0001 SCSI tape: test unit ready failed; hardware
error
21E0 0002 SCSI tape: test unit ready failed; sense data
available
21E0 0003 SCSI tape: send diagnostic failed; sense data
available
21E0 0004 SCSI tape: send diagnostic failed - devofl
command
21ED 0001 SCSI C: test unit ready failed; hardware error
21ED 0002 SCSI changer: test unit ready failed; sense
data available
474 Eserver pSeries 690 Service Guide
Action/
Possible Failing FRU
Before replacing any system components,
refer to the Action under error code 21A0
0001.
1. Replace the media (if a removable media
device).
2. Replace the SCSI device.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
Replace the SCSI device.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
Replace the SCSI device.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
1. Replace the SCSI device.
2. Replace the SCSI cable.
3. Replace the SCSI controller.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
1. Replace the media (if a removable media
device).
2. Replace the SCSI device.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
Replace the SCSI device.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
Replace the SCSI device.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
1. Replace the SCSI device.
2. Replace the SCSI cable.
3. Replace the SCSI controller.
Before replacing any system components,
refer to the Action under error code 21A0
0001.
1. Replace the SCSI device.
2. Replace the media.