Mappwr-3: An Open Room Epo Switch Has Been Detected From One Side - IBM iSeries Series Hardware Problem Analysis And Isolation

1. Check the position of the on/off switch on the bulk power regulator (BPR) referenced by the error code.
Is the switch in the ON position (to the left)?
v Yes: Continue with the next step.
v No: Set the switch to the ON position, press the (white) Service Complete button, and go to Verify
the repair.
This ends the procedure.
2. Exchange the following field replaceable units (FRUs) one at a time:
v Bulk power regulator (BPR) referenced by the error code that sent you to this procedure. See
symbolic FRU "BPRPWR" on page 288.
v Bulk power controller (BPC) on the side referenced by the error code that sent you to this
procedure. See symbolic FRU "BPCPWR" on page 287.
v Bulk power enclosure (BPE) on the side referenced by the error code that sent you to this
procedure. See Bulk power enclosure assembly - Models 870 and 890 for the part number and a
link to the remove and replace procedure.
After each FRU is exchanged, is the error code that sent you to this procedure still reported?
v Yes: Exchange the next FRU on the list. If all of the FRUs have been exchanged, then call your
next level of support.
This ends the procedure.
v No: Go to Verify the repair.
This ends the procedure.

MAPPWR-3: An open room EPO switch has been detected from one side

For use by authorized service providers.
Note: Read the Danger and caution notices in the "MAPPWR" on page 364 introduction before performing
this procedure.
1. Ensure the following for the Model 870 and 890 system unit:
v If the room EPO cable is not installed: Make sure that the room EPO BYPASS switch on the bottom
of the EPO panel is to the left (blocking cable installation).
v If the room EPO cable is installed: Check to ensure that the customer's room EPO switch is not
tripped, and the cable is connected and seated correctly.
2. Check the Unit Emergency Power Off (UEPO) card assembly. Is a customer room EPO cable plugged
into the UEPO panel?
v Yes: Continue with the next step.
v No: Go to step 4 (See page 368).
3. Perform the following:
a. Set the UEPO switch on both bulk power controllers (BPCs) to the BYPASS position.
b. Unplug the customer room EPO cable.
c. Set the internal toggle switch on the bottom of the UEPO panel to EPO BYPASS position. See
Figure 1. UEPO card assembly, reference number 6, in the Models 870 and 890 - Unit Emergency
Power Off (UEPO) card assembly remove and replace procedure.
d. Set the UEPO switch on both BPCs back to the NORMAL position.
e. Press the (white) Service complete button.
Is error code 1011 00AC, 101A FDB6, or 101B FDB6 generated?
v Yes: Continue with the next step.
v No: Go to step 5 (See page 369).
4. Exchange the following field replaceable units (FRUs) one at a time:
v UEPO card assembly. See Final assembly - Models 870 and 890 for the part number and a link to
the remove and replace procedure.
368
iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and
Isolation