9 5 0 B O P E R A T O R S S T A T I O N
E L E C T R I C A L T R O U B L E S H O O T I N G
3. Remove the Y and B wires from the fault alarm and check for voltage with a
5P7277 Voltage Tester.
Replace the fault alarm.
Go to Step 4.
4. Check for voltage between the Y wire and machine ground.
Repair or replace the harness or make a ground wire Go to Step 5.
to the fault alarm.
5. Check for continuity through the harness between the operator panel and the
Connect the Y wire and B wire, that go to the fault alarm, together.
Disconnect the harness plug from the operator panel.
Check for continuity between Sockets 2 and 10.
Go to Step 6.
Harness has an open. Repair or replace the harness.