IBM 7026-H80 - RS/6000 - 256 MB RAM Service Manual page 219

Service guide
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Table 5. Firmware Error Codes. (continued)
Error Code Description
21A0 0001 SCSI DASD - test unit ready failed -
hardware error
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 cmd
21E0 0001 SCSI tape - test unit ready failed -
hardware error
Action/
Possible Failing FRU
Note:
1. Before replacing any system
components:
a. Ensure that the controller and
each device on the SCSI bus
is assigned a unique SCSI ID.
b. Ensure SCSI bus is properly
terminated.
c. Ensure SCSI signal and
power cables are securely
connected and not damaged.
2. The location code information is
required to identify the ID of SCSI
device failures as well as to
indicate the location of the
controller to which the device is
attached. Check the system error
logs to determine the location
code information associated with
the error code.
a. Replace the SCSI device.
b. Replace the SCSI cable.
c. Replace the SCSI controller.
Before replacing any system
components, refer to the notes in
error code 21A0 0001.
1. Replace the media (removable
media devices).
2. Replace the SCSI device.
Before replacing any system
components, refer to the notes in
error code 21A0 0001.
Replace the SCSI device.
Before replacing any system
components, refer to the notes in
error code 21A0 0001.
Replace the SCSI device.
Before replacing any system
components, refer to the notes in
error code 21A0 0001.
1. Replace the SCSI device.
2. Replace the SCSI cable.
3. Replace the SCSI controller.
Chapter 5. Error Code to FRU Index
201

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