Maintenance
6–16
WFM 601A, WFM 601E, & WFM 601M Service Manual
Figure 6–14: Components of the fan assembly
9. To remove the Line Filter, perform these steps:
a. Unsolder the two wires from the A1 Power Supply.
b. Remove the nut holding the green ground lead to the frame.
c.
Remove the two TORX T-10 screws from the inside of the rear panel to
free the locking adapter and the Line Filter. Notice how the pieces of the
locking adapter attach the Line Filter to the rear panel.
d. Pull the Line Filter out the back of the rear panel.
10. To replace the rear panel and Input assembly, reverse these steps.
To remove the A3 Main board, use the following procedure:
1. Disconnect the cables from the connectors shown in Figure 6–15. Some
connectors come off the Main board and others from the other instrument
circuit boards.
2. Follow the Bezel removal instructions on page 6–8 to remove the five
front-panel knobs and the small panel below the CRT bezel.
3. Unsolder the four (red, green, blue, and brown) CRT deflection leads from
the Main board. The Main board has labels showing where each lead
connects.
Removing the Main Board
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