Fc 5074, Fc 5079 - Display Panel - Nb1; Fc 5074, Fc 5079, Fc 9079 - Power Distribution Board - Pb1 - IBM iSeries 270 Service Manual

v Yes: Replace the covers that were removed during this procedure and return to the procedure that
sent you here.
This ends the procedure.
6. Install the disk unit by performing the following:
a. Power off the system (see Power on/off the system and logical partitions).
b. Disconnect the power cord.
c. Put the disk unit part way into the desired slot and rotate the handle of the disk unit towards you.
d. Push the disk unit completely into the slot and rotate the handle towards the disk unit to latch it into
the slot.
e. Replace the covers that were removed during this procedure and return to the procedure that sent
you here.
This ends the procedure.

FC 5074, FC 5079 - Display panel - NB1

For use by authorized service providers.
Use this procedure to remove or replace the display panel - NB1 in an FC 5074 or FC 5079.
Attention: The display panel is sensitive to electrostatic discharge (see Work with electrostatic
discharge-sensitive parts).
To remove or replace the display panel - NB1:
1. Power off the expansion tower. See the Expansion unit power procedure.
2. Disconnect the ac power cord from the expansion tower.
3. Open the front cover. See FC 5074, FC 5079, FC 5094, FC 5294, FC 9079, FC 9094 - Covers.
4. Pull on the two side fasteners to release the display panel assembly.
5. Slide the panel partially out of the frame.
6. Disconnect the cables that are attached to the backside of the display panel.
7. Remove the display panel from the frame.
8. Reverse the above procedure to install the new panel.
9. After exchanging an item, go to Verify the repair.
This ends the procedure.

FC 5074, FC 5079, FC 9079 - Power distribution board - PB1

For use by authorized service providers.
Use this procedure to remove or replace the power distribution board - PB1 in an FC 5074, FC 5079, or
FC 9079.
To remove or replace the power distribution board - PB1:
1. You must remove both disk unit backplanes (DB1 and DB2). Perform FC 5074, FC 5079, FC 9079 -
Device board - DB1 and DB2 for each backplane. Continue with the next step.
2. From the rear of the expansion tower, do the following:
a. Open the rear cover. See FC 5074, FC 5079, FC 5094, FC 5294, FC 9079, FC 9094 - Covers.
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 disk unit controller cards that are located inside the PCI card
enclosure.
Attention: All cards are sensitive to electrostatic discharge (see Work with electrostatic
discharge-sensitive parts).
148
Hardware (Remove and Replace; Part Locations and Listings)