v No: Go to step 45 (See page 385).50. Examine the amber logic-power LEDs of all installed processor subsystem DCAs.51. 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 324.52. Attention: Before replacing the system backplane, call your next level of support.Replace the system backplane at location M1.53. Power on the system. See Power on/off the system and logical partitions.54. Did the system stop with the same error code as recorded in step 1 (See page 382)?v Yes: Continue with the next step.v No: The system backplane was defective. Return the system to its original configuration. SeeVerify the repair.This ends the procedure.55. Power off the system. See Power on/off the system and logical partitions. Then, make sure all amberlogic-power LEDs of all installed processor subsystem DCAs are off.56. Has the system backplane been replaced?v Yes: Call your next level of support.v No: Go to step 52 (See page 386).MAPPWR-C: 1.5 V CPU current/voltage problem in processor subsystemFor use by authorized service providers.Note: Read the Danger and caution notices in the “MAPPWR” on page 364 introduction before performingthis procedure.1. Record the error code and the location codes that sent you to this procedure.2. Power off the system. See Power on/off the system and logical partitions. Then, examine the amberlogic-power LEDs of all installed processor subsystem DCAs.3. 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 324.4. Pull out the following books about 25 mm (1 inch), if present. See Models 870 and 890 - Capacitorbooks and blanks.v Capacitor book at location M33v Capacitor book at location M375. Power on the system. See Power on/off the system and logical partitions.6. Did the system stop with the same error code as recorded in step 1 (See page 386)?v Yes: Go to step 12 (See page 387).v No: Continue with the next step.7. One of the books just removed is defective.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.8. Reinsert one of the books that is pulled out and listed in step 4 (See page 386).9. Power on the system. See Power on/off the system and logical partitions.10. Did the system stop with the same error code as recorded in step 1 (See page 386)?386 iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis andIsolation
