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TROUBLESHOOTING & REPAIR
AUXILIARY TRANSFORMER PRIMARY WIRING HARNESS TEST (continued)
FIGURE F.9 - RECONNECT PANEL/TERMINAL STRIP LOCATION
1
2
3
4
1.RECONNECT PANEL (ON LEFT SIDE)
2.TERMINAL STRIP
3.FAN MOTORS
4.AUXILIARY TRANSFORMERS
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TEST PROCEDURE
1.Remove main input supply power to the machine.
2.With the 3/8" nut driver, remove the 4 screws that hold the handle to the machine.
3.Remove the rubber gasket (cover seal) from the lift bail.
4.With the 5/16" nut driver, remove the sheet metal screws from the case top.
5.With the 5/16" nut driver, remove the screws holding the right and left case sides. Remove the case sides by lifting up and out.
6.Perform the Capacitor Discharge Procedure described in this section of the manual.
WARNING
Before continuing with the test procedure, perform the capacitor discharge proce- dure to avoid electric shock.
7.After you have completed the capacitor discharge procedure for all four switch boards, remove the PC board cover. Use the 5/16" nut driver.
8.Remove the 5 leads ( 3 heavy and 2 small) T1, T2, T3 from main input contactor CR1. This is a safety precaution. It prevents high voltage from being put on the machine during the test. Wrap tape around the lead ends to insulate them and prevent them from touching.
9.Remove plug J30 from the protection board. See Figure F.1 for location of the board and plug J30.
NOTE: If removing plug J30 solves the prob- lem, check for a short circuit or a fault in the 24 VAC circuit (plug P71) and the main contactor coil. See the Input and Auxiliary Circuit Wiring Diagram, Figure F.10.
