a.
Grasp the right side of the cover and pull it towards you to open it.
b.
After opening the cover, press down on the lever that is located inside
along the top, left side of the cover.
c.
Tilt the top of the cover away from the tower and lift the cover off.
To remove the rear cover when the FC 5078 is mounted on top of a FC 5074, see
“FC 5074, FC 5079, FC 9079 – Covers” on page 623.
FC 5078/0578 – Expansion Unit Control Panel – NB1
Attention:
The control panel is sensitive to electrostatic discharge (see
“Appendix C. Working with Electrostatic Discharge-Sensitive Parts” on page 955).
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)
1.
Power down the FC 5078/0578 frame. Pull the power plugs that run from the
FC 5078/0578 to the AC Box of the frame below (see “Powering On and
Powering Off the System and Logical Partitions” on page 922).
2.
Open the front cover (see “FC 5078/0578 – Covers” on page 650).
3.
Pull on the two side fasteners to release the control panel assembly.
4.
Slide the panel partially out of the frame.
5.
Disconnect the cables that are attached to backside of the control panel.
6.
Remove the control panel from the frame.
7.
After exchanging an item, go to “Verifying the Repair” on page 920.
This ends the procedure.
FC 5078/0578 – Power Distribution Backplane – PB1
1.
Remove the top, front and rear cover (see “FC 5078/0578 – Covers” on
page 650).
2.
Power down the FC 5078/0578 frame. Pull the power plugs that run from the
FC 5078/0578 to the AC Box of the frame below (see “Powering On and
Powering Off the System and Logical Partitions” on page 922).
3.
Remove the center top plate.
4.
Remove the two power supplies (see “FC 5078/0578 – Power Supplies – P01
and P02” on page 652).
5.
From the top of the tower, remove and lable the cables that connect to the
power distribution board.
6.
Remove the screws securing the power distribution board to the frame.
7.
Pull the power distribution board out through the top of the frame.
8.
Install the power distribution backplane by reversing the removal procedure.
After exchanging an item, go to “Verifying the Repair” on page 920.
This ends the procedure.
Remove and Replace Procedures
Chapter 4. Removal and Installation Procedures
651
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