IBM iSeries 270 Service Manual page 165

a. Remove the external cables from the rear of the PCI card enclosure and note their locations.
b. Remove the EMC access plate that is located directly above the PCI card enclosure. Press the
surfaces of the two latching mechanisms together and tilt the top of the cover away from the
frame to remove it.
c. Remove the cables from the top of the PCI cards and note their locations.
Attention: All cards are sensitive to electrostatic discharge. See Work with electrostatic
discharge-sensitive parts.
d. Remove the screws that hold the PCI card enclosure to the frame.
e. Pull the PCI card enclosure partially out of the frame while lifting the cables clear of the
enclosure.
f. Press the release mechanism that is located along the top right side of the enclosure and carefully
slide the enclosure towards you. Make sure that the cables are clear of the enclosure.
5. Remove the PCI cards from the enclosure and note their locations. See FC 5074, FC 5079, FC 5094,
or FC 5294 - Cards (dedicated).
6. Install the new PCI card enclosure by reversing the above procedure.
7. Are you working on a FC 9079?
v No: Continue with the next step.
v Yes: Perform the following:
a. Open the front cover. See FC 5074, FC 5079, FC 5094, FC 5294, FC 9079, FC 9094 - Covers.
b. Pull on the two side fasteners to release the control panel.
c. Slide the panel partially out of the frame.
d. Insert the keystick into the panel.
e. Apply ac power. The panel should display SRC 0000 5553.
Note: The tower may power up automatically.
f. Locate the push button located on the back of the control panel, directly behind the keystick
position. Depress the push button for 3-4 seconds. The control panel will display the bring-up
SRCs and then function 01.
Figure 1. System unit control panel with keystick (NB1)
Analyze hardware problems
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