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F-60 TROUBLESHOOTING & REPAIRF-60
OUTPUT DIODE REPLACEMENT PROCEDURE (cont.)
FIGURE F.31 - RECTIFIER ASSEMBLY WITH PARALLELED DIODES
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PROCEDURE (Paralleled IndividualDiodes)
1.Turn main power OFF.
2.Perform Input Filter Capacitor Discharge proce- dure detailed in Maintenance section..
3.Detach and remove both Switch Board assemblies and attached capacitors. See Switch Board Removal and Replacement procedure
4.Detach the fan shroud to gain access to the diode heat sink and mounting bracket. When the fan shroud is lifted, the tabs securing the heat sink mounting bracket will release.
5.Move the diode heat sink and mounting bracket away from the Case Back.
6.
7.Remove the nut that secures each diode to the heat sink and mounting bracket.
8.Mount the replacement diodes to the heat sink. IMPORTANT: The replacement diodes will come with an instruction sheet that addresses surface preparation and torque values. Failure to follow these instructions may result in subsequent break down.
9.Carefully resolder the leads to the new diodes.
10.Reassemble the unit being careful to use all of the insulating materials. Also make certain to replace all disconnected leads in their proper location. Failure to do so may result in machine damage when the power is applied.
11.Perform the Test After Switch Board or
Capacitor Replacement .
