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TROUBLESHOOTING & REPAIR
MAIN SWITCH BOARD TEST (continued)
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6.If any test fails replace the switch board. See
Main Switch Board Removal and Replacement.
7.If the switch board resistance tests are OK, check connections on plugs J20, J21, J22 and all asso- ciated wiring. See wiring diagram.
8.Reconnect leads 201, 202, 203, 204, 205, 206, 207, and 208 to the switch board. Ensure that the leads are installed in their proper locations. Pre- Torque all leads nuts to 25 inch lbs. before tight- ening them to 44 inch lbs.
9.Replace the case wraparound cover using a 5/16” nut driver.
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TABLE F.1. SWITCH BOARD RESISTANCE TEST
APPLY POSITIVE TEST | APPLY NEGATIVE TEST | NORMAL |
PROBE TO TERMINAL | PROBE TO TERMINAL | RESISTANCE READING |
|
|
|
+206 | Greater than 1000 ohms | |
+208 | Greater than 1000 ohms | |
+202 | Greater than 1000 ohms | |
+201 | Greater than 1000 ohms | |
+205 | Less than 100 ohms | |
+203 | Less than 100 ohms | |
+204 | Less than 100 ohms | |
+207 | Less than 100 ohms | |
|
|
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