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TROUBLESHOOTING & REPAIR | ||
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STATIC SCR RECTIFIER ASSEMBLY TEST
NOTE: DO NOT DISASSEMBLE THE
SCR RECTIFIER HEAT SINK ASSEM-
BLY.
6.Test for high or infinite resistance from the anode to the cathode of SCR 1. See Figure F.4. Use an analog ohmmeter (Multimeter).
FIGURE F.4 - SCR 1 Test Points.
7.Test for high or infinite resistance from the cathode to the anode of SCR 1 by reversing the meter leads. See Figure F.4.
a.If a high or infinite resistance is indicated for both tests 6 and 7, the SCR 1 is not “shorted”.
b.If a low resistance is indicated in either tests 6 or 7, the SCR is faulty. Replace SCR Assembly.
8.Repeat Steps #7 to test SCR 2.
9.Reconnect leads X2 and X3.
10.Reconnect Plugs J3 and J6.
11.If this test did not identify the prob- lem or to further test the SCR, go to the Active SCR Test.
