IBM pSeries 670 Service Manual page 173

Step 1524-2
1. Set UEPO switch on both BPCs to the BYPASS position.
2. Unplug the customer room EPO cable.
3. Set switch (J4) on the UEPO panel to EPO BYPASS position.
4. Set UEPO switch on both BPCs back to the NORMAL position.
5. Press the service complete button.
Is 101A FDB6 or 101B FDB6 generated?
NO Go to "Step 1524-4".
YES Go to "Step 1524-3".
Step 1524-3
Exchange the following FRUs one at a time:
1. UEPO card assembly. Follow all steps in the removal and replacement procedures for "Unit
Emergency Power Off (UEPO) Card Assembly" on page 788.
2. Cable from UEPO to BPC on the side referenced by the error code that sent you to this MAP.
3. BPC on the side referenced by the error code that sent you to this MAP. Follow all steps in the
removal and replacement procedures for "Bulk Power Controller (BPC)" on page 784.
After each FRU exchanged, is the error code that sent you to this MAP still reported?
The problem has been corrected. Go to "MAP 0410: Repair Checkout" in the RS/6000 and
NO
Eserver pSeries Diagnostic Information for Multiple Bus Systems.
YES Replace the next FRU on the list. If all FRUs on the list have been replaced, call for support.
Step 1524-4
Perform the following actions one at a time:
1. Replace the UEPO card assembly. Follow all steps in the removal and replacement procedures for
"Unit Emergency Power Off (UEPO) Card Assembly" on page 788.
2. Check with the customer's site services to have them test the room EPO switch for correct operation.
After each action is performed, is the error code that sent you to this MAP still reported?
The problem has been corrected. Go to "MAP 0410: Repair Checkout" in the RS/6000 and
NO
Eserver pSeries Diagnostic Information for Multiple Bus Systems.
YES Perform the next action on the list. If all actions on the list have been performed, call for support.
Chapter 3. Maintenance Analysis Procedures
153