11713 Operating and Service Manual 7-15
Replacing Major Assemblies
A8 Power Supply/Line Filter Assembly Removal/Replacement
A8 Power Supply/Line Filter Assembly
Removal/Replacement
CAUTION
This module contains components that can be damaged or destroyed by
electrostatic discharge. It should be serviced at a static-safe
workstation. Refer to "Preparing a Static-Safe Work Station" in
Chapter 8.
To Remove the A8 Power Supply/Line Filter Assembly
1. Locate the line filter unit behind the power connector where power
cable plugs in.
2. Before proceeding, make sure you identify and record the color of the
transformer wire and the corresponding pin number.
3. Desolder the transformer wires and unplug the two wires from the
power switch cable.
4. Desolder the ground wire on the metallic cover of the unit.
5. Remove the rear panel from the main frame by removing the four
comer screws.
6. Bend the two sides of the assembly to release the lock while gently
removing the line filter assembly.
To Replace the A8 Power Supply/Line Filter Assembly
1. Push the new assembly into the opening.
2. Solder all wires. Take care to connect the correct color of transformer
wire to the corresponding pin number.
3. Plug in the two wires from the power switch cable.
4. Solder the ground wire to the previous location on the metallic cover
of the unit.
5. Reassemble the rear panel to the module.
6. Replace the module covers.
