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Table 9. DSA Preboot messages (continued)

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

v See Chapter 4, “Parts listing, Types 4255, 7945, and 7949 server,” on page 157 to determine which components are

customer replaceable units (CRU) and which components are field replaceable units (FRU).

v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a Trained

service technician.

v Go to the IBM support Web site at http://www.ibm.com/systems/support/ to check for technical information, hints, tips,

and new device drivers or to submit a request for information.

Message

number Component Test State Description Action

166-801-xxx IMM IMM I2C Test Aborted IMM I2C test

stopped: the

IMM returned

an incorrect

response

length.

1. Turn off the system and disconnect it from the

power source. You must disconnect the system

from ac power to reset the IMM.

2. After 45 seconds, reconnect the system to the

power source and turn on the system.

3. Run the test again.

4. Make sure that the DSA code is at the latest

level. For the latest level of DSA code, go to

http://www.ibm.com/support/

docview.wss?uid=psg1SERV-DSA.

5. Make sure that the IMM firmware is at the latest

level. The installed firmware level is shown in

the diagnostic event log in the Firmware/VPD

section for this component. For more

information, see “Updating the firmware” on

page 253.

6. Run the test again.

7. If the failure remains, go to the IBM Web site for

more troubleshooting information at

http://www.ibm.com/systems/support/

supportsite.wss/docdisplay?brandind=5000008

&lndocid=SERV-CALL.

166-802-xxx IMM IMM I2C Test Aborted IMM I2C test

stopped: the

test cannot be

completed for

an unknown

reason.