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TROUBLESHOOTING & REPAIR
AUXILIARY TRANSFORMER TEST #2 (continued)
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11.To conduct this test, you will be measuring the voltage between pin 2 and pin 5 of plug J4. The plug is located in the machine undercarriage and is somewhat difficult to reach. It is probably easiest to disconnect the plug and insert the probes of your voltmeter alongside pins 2 and 5 before turning on input power, which is the next step.
12.Turn the main input supply power to the machine back ON.
WARNING
ELECTRIC SHOCK can kill.
Proceed with caution. Be careful not to touch any internal machine components during the
remainder of the test procedure.
13.Check for the correct AC voltage between plug J4 - pin 2 and J4 - pin 5. It should be 220 - 230 VAC.
If the voltage is correct, then Auxiliary Transformer #2 is good.
If the voltage is wrong or missing, check the associated wiring to the transformer primary. See the Input and Auxiliary Circuit Wiring Diagram, Figure F.8. These voltages are most easily checked at the terminal strip. The cor- rect voltages are as follows:
H1A to H3A = 220 - 230 VAC
If this voltage is wrong or missing, check the associated wiring to the transformer primary.
If the correct voltage IS applied to the primary but the voltage at H1A to H3A is not correct, the transformer may be faulty. Replace the transformer. Refer to the T2 Auxiliary Trans- former Removal and Replacement Procedure in this section of the manual.
14.After the test is completed and the prob- lem successfully repaired, reconnect plug J30 to the protection board.
15.Reconnect plug J73 to the T1 transformer.
16.Reconnect the 5 leads to the main con- tactor CR1.
17.Install the PC board cover.
18.Install the machine case sides and top.
19.Install the handle and the lift bail rubber gasket.
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