PWR1918

A voltage regulator card might be failing.

For instructions for removing and replacing any FRUs called out by the following procedure. See System FRU locations for information about FRU locations for the system that you are servicing.

To perform the correct PWR1918 for the system that you are servicing, select your machine type and model (system) from among the following:

8203-E4A, 9407-M15, and 9408-M25
8204–E8A and 9409-M50
8234-EMA, 9117-MMA, 9406-MMA
This procedure is not applicable to the 9125–F2A or the 9119–FHA.

For 8203-E4A, 9407-M15, and 9408-M25) and 8204–E8A and 9409-M50, use the following table to determine the action to perform.

Reference Code: Action when servicing a 8203-E4A, 9407-M15, and 9408-M25 Action when servicing a 8204–E8A and 9409-M50
1xxx 2622 N/A Replace the following, if present, one at a time, and in the order listed:
  1. Base RAID card (Un-P1-C11)
  2. Auxiliary RAID card (Un-P1-C10)
  3. System backplane (Un-P1)
1xxx 2623 Replace the following, if present, one at a time, and in the order listed:
  1. Base RAID card (Un-P1-C10)
  2. Auxiliary RAID card (Un-P1-C9)
 Replace the following, if present, one at a time, and in the order listed:
  1. Base RAID card (Un-P1-C11)
  2. Auxiliary RAID card (Un-P1-C10)
1xxx 2624 Replace the following, if present, one at a time, and in the order listed:
  1. Ethernet card (Un-P1-C7)
  2. Base RAID card (Un-P1-C10)
  3. Auxiliary RAID card (Un-P1-C9)
  4. System backplane (Un-P1)
  5. DASD drives
  6. DASD and media backplane (Un-P2)
 Replace the following, if present, one at a time, and in the order listed:
  1. Ethernet card (Un-P1-C6)
  2. Base RAID card (Un-P1-C11)
  3. Auxiliary RAID card (Un-P1-C10)
  4. System backplane (Un-P1)
  5. DASD drives
  6. DASD and media backplane (Un-P2)
1xxx 2625 Replace the following, if present, one at a time, and in the order listed:
  1. Base RAID card (Un-P1-C10)
  2. Auxiliary RAID card (Un-P1-C9)
  3. DASD drives d. DASD and media backplane (Un-P2)
  4. Ethernet card (Un-P1-C7)
  5. System backplane (Un-P1).
 Replace the following, if present, one at a time, and in the order listed:
  1. Ethernet card (Un-P1-C6)
  2. Base RAID card (Un-P1-C11)
  3. Auxiliary RAID card (Un-P1-C10)
  4. System backplane (Un-P1)
  5. TPMD card (Un-P1-C12)
1xxx 2626 Replace the Ethernet card (Un-P1-C7 if prresent. Replace the Ethernet card (Un-P1-C6), if present.
1xxx 2630 Replace VRM1A and VRM1B (which are one CRU/FRU) on processor 1 (Un-P1-C13). SeeSystem FRU locations for FRU location information for the system that you are servicing. Replace VRM1A and VRM1B (which are one CRU/FRU) on processor card 1 (Un-P1-C13-C10). SeeSystem FRU locations for FRU location information for the system that you are servicing.
1xxx 2632 Replace the following, one at a time, and in the order listed:
  1. VRM2 for processor 1 (Un-P1-C18)
  2. System backplane (Un-P1)
 Replace VRM2 on processor card 1 (Un-P1-C13-C5). SeeSystem FRU locations for FRU location information for the system that you are servicing.
1xxx 2633 N/A Replace the following, one at a time, and in the order listed:
  1. Processor card 1 (Un-P1-C13-C10)
  2. Ethernet card (Un-P1-C6)
1xxx 2634 N/A Replace processor card 1 (Un-P1-C13-C10).
1xxx 2640 Replace VRM1A and VRM1B (which are one CRU/FRU) on processor 2 (Un-P1-C14). Replace VRM1A and VRM1B (which are one CRU/FRU) on processor card 2 (Un-P1-C14-C10).
1xxx 2642 Replace the following, one at a time, and in the order listed:
  1. VRM2 for processor 2 (Un-P1-C20)
  2. System backplane (Un-P1)
 Replace VRM2 on processor card 2 (Un-P1-C14-C5).
1xxx 2643 N/A Replace the following, one at a time, and in the order listed:
  1. Processor card 2 (Un-P1-C14-C10)
  2. Ethernet card (Un-P1-C6)
1xxx 2644 N/A Replace processor card 2 (Un-P1-C14-C10).
1xxx 2650 N/A Replace VRM1A and VRM1B (which are one CRU/FRU) on processor card 3 (Un-P1-C15-C10).
1xxx 2652 N/A Replace VRM2 on processor card 3 (Un-P1-C15-C5).
1xxx 2653 N/A Replace the following, one at a time, and in the order listed:
  1. Processor card 3 (Un-P1-C15-C10)
  2. Ethernet card (Un-P1-C6)
1xxx 2654 N/A Replace processor card 3 (Un-P1-C15-C10).
1xxx 2660 N/A Replace VRM1A and VRM1B (which are one CRU/FRU) on processor card 4 (Un-P1-C16-C10).
1xxx 2662 N/A Replace VRM2 on processor card 4 (Un-P1-C16-C5).
1xxx 2663 N/A Replace the following, one at a time, and in the order listed:
  1. Processor card 4 (Un-P1-C16-C10)
  2. Ethernet card (Un-P1-C6)
1xxx 2664 N/A Replace processor card 4 (Un-P1-C16-C10).
1xxx 3120 N/A Replace the following, if present:
  1. The VRM specified by the location code.
  2. The processor card specified by the location code.
1xxx 8450 At least one processor VRM is missing. Inspect all of the processor cards and install the VRM that are missing. SeeSystem FRU locations for FRU location information for the system that you are servicing. At least one processor VRM is missing. Inspect all of the processor cards and install the VRMs that are missing. SeeSystem FRU locations for FRU location information for the system that you are servicing.

For 8234-EMA, 9117-MMA, 9406-MMA, use the following table to determine the action to perform.

Reference Code: Action when servicing a 8234-EMA, 9117-MMA, 9406-MMA:
1xxx 1611, 1612, or 1613 Voltage regulator 1 is the failing item and needs to be replaced.
1xxx 1621, 1622, or 1623 Voltage regulator 2 is the failing item and needs to be replaced.
1xxx 1631, 1632, or 1633 Voltage regulator 3 is the failing item and needs to be replaced.
1xxx 2602 Perform problem analysis using the reference code.
1xxx 8450 You have fewer voltage regulator cards than processor cards. Add another regulator card in the next empty position.
1xxx 8451 You have too few voltage regulator cards installed. Add another regulator card in the next empty position.
For all other reference codes
  1. Perform the following:
    1. Remove one of the voltage regulator cards that you have not already removed in this procedure and replace it with a new one.
    2. Power on the system. See Powering on and powering off the system for information on starting and stopping your system.
    3. Does reference code 1xxx 2602 appear again?
      No:
      The voltage regulator card that you replaced was the failing item. This ends the procedure.
      Yes:
      Continue with the next step.
  2. Have you replaced all of the voltage regulator cards?
    No:
    Reinstall the original regulator card, and then repeat substep 1a of this table.
    Yes:
    Replace the regulator distribution connection backplane (P2). This ends the procedure.