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TROUBLESHOOTING & REPAIR
INPUT POWER AND WIRING HARNESS TEST (continued)
9.Check for shorts or fusing at the input (top) leads to the main contactor.
10.Remove plug J30 from the protection board. Check the resistance on the J30 header (the plug mounted on the board) between pin 1 and pin 6. Resistance should be very high. If resistance is low or zero ohms, the protection board is faulty.
11.Check plug J30 and associated wires for shorts or damaged connections. See the Input and Auxiliary Circuit Wiring Diagram,
Figure F.14.
12.If any of the tests reveal signs of heavy current flow, check the switch boards and the input rectifier. Refer to the Switch Board Test and the Input Rectifier Resistance Test in this section of the manual.
13.After the test is completed and the prob- lem successfully repaired, reconnect all plugs disconnected for the test.
14.Install the PC board cover.
15.Install the machine case sides and top.
16.Install the handle and the lift bail rubber gasket.
