IBM eserver p Series Service Manual page 296

Error Code Description
21ED 0004 SCSI changer: send diagnostic failed - devofl
command
21EE 0001 Undetermined SCSI device: test unit ready
failed; hardware error
21EE 0002 Undetermined SCSI device: test unit ready
failed; sense data available
21EE 0003 Undetermined SCSI device: send diagnostic
failed; sense data available
21EE 0004 Undetermined SCSI device: send diagnostic
failed - devofl command
21F0 0001 SCSI CD-ROM: test unit ready failed; hardware
error
21F0 0002 SCSI CD-ROM: test unit ready failed; sense
data available
21F0 0003 SCSI CD-ROM: send diagnostic failed; sense
data available
21F0 0004 SCSI CD-ROM: send diagnostic failed - devofl
command
276 EserverpSeries 650 Service Guide
Action/
Possible Failing FRU
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. If the missing SCSI devices are connected
to the same backplane, replace the SCSI
backplane.
4. 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.
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.
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.