IBM iSeries 270 Service Manual page 93

CAUTION:
The circuit card contains lead solder. To avoid the release of lead (Pb) into the environment, do not
burn. Discard the circuit card as instructed by local regulations. (RSFTC234)
To remove or replace the control panel (NB1):
1. Power off the system. See Power on/off the system and logical partitions.
2. Disconnect the ac power cord from the tower that you are working on.
3. Are you working on a FC 9079 Base I/O Tower or the lower half of a FC 8079 tower?
v Yes: Go to step 9 (See page 81).
v No: Perform the following:
a. On the processor tower, unfasten the two thumbscrews that keep the panel from hinging
forward and swing the panel forward.
b. Loosen the two screws that retain the processor capacity card retention (back) cover and
remove the cover.
Continue with the next step.
4. Mark the positions and orientation of the processor capacity card and interactive cards, and then
remove the cards. See Control panel, processor tower - Models 840 and SB3.
5. Choose one of the following:
v If you are replacing the control panel, then you must move the processor capacity card and
interactive card to the new panel. Continue with the next step.
v If you are here to replace the processor capacity card or interactive card, then replace only that
card and not the panel. After replacing the card, put the control panel back into the frame by
reversing the steps that you used to remove the card. Then, go to step 7 (See page 81).
6. Perform the following to finish removing the panel:
a. Remove the cables from the panel.
b. Remove the four screws on the front bezel and remove the bezel from the hinge bracket.
c. Remove the five screws that are retaining the panel card and remove the panel card.
d. Reverse the above procedure to install the new panel. After exchanging an item, go to Verify the
repair.
This ends the procedure.
7. If you are here to replace a processor capacity card that was associated with processor-on-demand
(POD) processor features, perform the following:
a. Contact your second level of support to determine if a POD activation code is required to reset
previously activated on-demand processors.
b. If necessary, a new POD activation code will need to be generated and then entered at the
server.
c. After entering a POD activation code, 30 minutes should elapse before an IPL is performed to
ensure the POD activation code has been saved.
Note: DST/SST options to activate POD will not be visible if the system password has been
bypassed.
8. After exchanging an item, go to Verify the repair.
This ends the procedure.
9. Open the front cover. See FC 5074, FC 5079, FC 5094, FC 5294, FC 9079, FC 9094 - Covers.
10. Perform the following to remove the control panel:
a. Pull on the two side fasteners to release the control panel assembly.
b. Slide the panel partially out of the frame.
c. Disconnect the cables that are attached to backside of the control panel.
d. Remove the control panel from the frame.
Analyze hardware problems
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