Specifications

Table 6. Firmware Error Codes (continued)
Error Code Description Action/ Possible Failing FRU
21A0 0001 SCSI DASD - test unit ready failed -
hardware error
Notes:
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 that the SCSI bus is
properly terminated.
c. Ensure that the 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.
1. Replace the SCSI device.
2. Replace the SCSI cable.
3. Replace the SCSI backplane.
4. Replace the SCSI controller.
21A0 0002 SCSI DASD - test unit ready failed -
sense data available
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.
21A0 0003 SCSI DASD - send diagnostic failed -
sense data available
Before replacing any system
components, refer to the notes in
error code 21A0 0001. Replace the
SCSI device.
21A0 0004 SCSI DASD - send diagnostic failed -
DevOfl cmd
Before replacing any system
components, refer to the notes in
error code 21A0 0001. Replace the
SCSI device.
21E0 0001 SCSI tape - test unit ready failed -
hardware error
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.
120 Service Guide