Lucent Technologies Galaxy Power System 4812 - Replacing a Rectifier Fan Assembly

Lucent Technologies Galaxy Power System 4812
Issue 5 June 2000 Maintenance and Replacement 11 - 5
Replacement Procedures, continued
Replacing a
Rectifier Fan
Assembly
Stop! Review the “Installing or Replacing a Rectifier” procedure in
this section before proceeding.
Replacing a Rectifier Fan Assembly
Step
Action
1
Remove the rectifier from the system. See the “Installing or
Replacing a Rectifier” procedure in this section for the
procedure.
2
WAIT five minutes for capacitors to discharge.
3
Loosen the white front cover by removing 14 screws (5 top,
5 bottom, 2 on each side). Before fully removing the cover,
disconnect the ribbon cable from the display circuit pack.
4
Remove the screws attaching the old fans to the chassis and
carefully unplug the fan connector. The fan connector is
keyed and can be loosened by inserting a screwdriver into the
slotted side of the connector and gently prying the fan-side
connector loose.
5
Replace the new fans.
6
Reconnect the ribbon cable removed in Step 3.
7
Attach the front cover.
8
Install the rectifier, following instructions in the “Installing or
Replacing a Rectifier” procedure in this section.