Thermal Arc 185 AC, Service Manual

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ARCMASTER 185ACDC / 200ACDC
11 – 35
5 ) Remove the six screws and then detach the Secondary Diode (D2, D4, D5).
Do not have the wrong direction of the diodes when reinstalling.
Before installing a new diode, apply a uniform coat of silicone compound (Shinetsu Silicone G-747
or equivalent) on the base.
3.33 Secondary IGBT (Q13) (PCB15 (WK-3367)) UV\
1 ) Remove the side cover. [Reference page: 10-2]
2 ) Remove the PCB16 (WK-5499). [Reference page: 11-20]
3 ) Remove the PCB14 (WK-5570). [Reference page: 11-20]
4 ) Remove the one bolt and remove the one toothed washer, one washer and one terminal.
5 ) Remove the three posts, bus bar and two terminals.