Chapter 5 Servicing Infrastructure Boards and Components 5-13
5.4.2 Installing the Front Control Panel Light Pipe
Assembly
1. Align the light pipe assembly with the mounting holes on the drives cage.
2. Secure the light pipe assembly with two No. 2 Phillips screws.
3. Install the drives backplane.
See Section 5.3.1, “Removing the Drives Backplane” on page 5-9.
4. Install the drives cage.
See Section 5.2.2, “Installing the Drives Cage” on page 5-7.
5.5 Servicing the Power Distribution Board
(PDB)
It is easier to service the power distribution board (PDB) with the bus bar assembly
attached. If you are replacing a faulty PDB, you must remove the bus bar assembly
from the old board and attach it to the new PDB.
You must remove the power distribution board to access the paddle card.
Note – FRU: This field-replaceable unit should be replaced only by qualified service
technicians. Contact your Sun Service representative for assistance.
Caution – The system supplies power to the power distribution board even when
the server is powered off. To avoid personal injury or damage to the server, you
must disconnect power cords before servicing the power distribution board.
The following tools are needed for this procedure:
■ #2 Phillips screwdriver
5.5.1 Removing the Power Distribution Board
1. Remove the motherboard assembly.
See “To Remove the Motherboard Assembly” on page 4-23.
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