IBM iSeries Series Hardware Problem Analysis And Isolation page 389

a. Power off the system. See Power on/off the system and logical partitions.
b. Make sure all amber logic-power LEDs of all installed processor subsystem DCAs are off.
28. Reinsert one of the books that is pulled out and listed in step 24 (See page 376).
29. Power on the system. See Power on/off the system and logical partitions.
30. Did the system stop with the same error code as recorded in step 1 (See page 375)?
v Yes: The book just reinserted is defective. Replace it and return the system to its original
configuration. See Verify the repair.
This ends the procedure.
v No: Continue with the next step.
31. Have all the books listed in step 24 (See page 376) been reinserted?
v Yes: The symptom has changed. Return the system to its original configuration. See Verify the
repair.
This ends the procedure.
v No: Go to step 28 (See page 377).
32. Power off the system. See Power on/off the system and logical partitions). Then, examine the amber
logic-power LEDs of all installed processor subsystem DCAs.
33. Are all amber logic-power LEDs of all installed processor subsystem DCAs off?
v Yes: Continue with the next step.
v No: Replace the DCA that has the amber logic power LED that did not turn off. See symbolic FRU
"DCAPWR" on page 324.
34. Replace the cards or books in the following list, if present, one at a time and in the order listed. See
Locations — Models 870 and 890 with an FC 9094 Base I/O Tower for a link to the part number and
remove and replace procedure:
a. DCA 1-RH at location M31
b. DCA 2-RH at location M32
c. DCA 3-RH at location M34
d. DCA 4-RH at location M35
e. DCA 5-RH at location M36
35. Power on the system. See Power on/off the system and logical partitions.
36. Did the system stop with the same error code as recorded in step 1 (See page 375)?
v Yes: Continue with the next step.
v No: The book just replaced is defective. Return the system to its original configuration. See Verify
the repair.
This ends the procedure.
37. Power off the system. See Power on/off the system and logical partitions. Then, make sure all amber
logic-power LEDs of all installed processor subsystem DCAs are off.
38. Remove the new book that was just installed in step 34 (See page 377) and reinstall the original
book.
39. Have all the books listed in step 34 (See page 377) been replaced with new or original books?
v Yes: Continue with the next step.
v No: Go to step 34 (See page 377).
40. Examine the amber logic-power LEDs of all installed processor subsystem DCAs.
41. Are all amber logic-power LEDs of all installed processor subsystem DCAs off?
v Yes: Continue with the next step.
v No: Replace the DCA that has the amber logic power LED that did not turn off. See symbolic FRU
"DCAPWR" on page 324.
42. Attention: Before replacing the system backplane, call your next level of support.
Analyze hardware problems
377