Models 870 And 890 - Bulk Power Enclosure (Bpe); Models 870 And 890 - Bulk Power F-Airmover (Bpf) - IBM iSeries 270 Service Manual

Models 870 and 890 - Bulk power enclosure (BPE)

For use by authorized service providers.
Use this procedure to remove or replace the bulk power enclosure (BPE) on the Models 870 and 890.
To remove the bulk power enclosure (BPE):
1. Locate the BPE to be replaced by decoding the SRC. See the System reference code list, or Locations
— Models 870 and 890.
2. Perform the following:
a. Open the cover. See Models 870 and 890 - Covers.
b. Note the state of the ALL FRUs LEDs in the BPE.
c. Press the (green) Start Service button.
d. Only proceed if the ALL the BPR (Bulk Power Regulator) LEDs are off, or the repair has been
scheduled (System outage - EPO off).
3. Manually turn off (to the right) the BPR's on-lock/off-unlock switch on all bulk power regulator's (BPRs)
attached to the bulk power assembly (BPA) side being repaired.
4. Verify that all cables are labeled for plug location, and then unplug all cables from the BPA field
replaceable units (FRUs). Including, the bulk power controller (BPC), the bulk power distribution (BPD),
and the BPR cables followed by the ac line cord.
5. Remove all pluggable FRUs from the BPE, including the BPR, BPC, BPD's, and bulk power f-airmover
(BPF).
6. Remove the four mounting screws. Be careful to retain the screws.
Attention: Do not remove the left two bottom screws, as these fasten the cage rail to the frame.
7. Slide the board/enclosure FRU (the BPE) out of the frame.
Note: The BPE weighs less than 40 pounds.
To replace the bulk power enclosure (BPE):
1. Slide the board/enclosure FRU (the BPE) into the frame until the BPE side flanges make contact with
the mounting rails using the right side guide pins.
2. Fasten with the four mounting screws.
3. Reinstall the pluggable FRUs into the BPE, including the BPR, BPC, BPD's, and BPF. Be sure to
check the board connector of each FRU for any visible signs of damage (for example, broken sockets)
before replugging them into the backplane. Replace any FRU found to be damaged.
Attention: Ensure that all the BPR's on-lock/off-unlock switches are in the 'off' position on this BPA
before proceeding.
4. Replug all cables into the BPA FRUs, including the BPR, BPC, and BPD's followed by the ac line cord.
Attention: Ensure that the UEPO Bypass switch on the BPC is in the normal 'left' position.
5. Manually set all BPR's on-lock/off-unlock switches to the 'on' position (to the left) contained in the
associated BPA.
6. To indicate completion of these steps, press the (white) Service Complete button on the UEPO panel.
This ends the procedure.

Models 870 and 890 - Bulk Power F-airmover (BPF)

For use by authorized service providers.
Use this procedure to remove or replace the Bulk Power F-airmover (BPF) on the Models 870 and 890.
The BPF is located immediately to the right of the Bulk Power Controller (BPC), and mounted vertically in
the bulk power assembly (BPA). See Locations — Models 870 and 890.
To remove the Bulk Power F-airmover (BPF):
Analyze hardware problems
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