TOC
TOC
TROUBLESHOOTING & REPAIR
AUXILIARY TRANSFORMER TEST #1 (continued)
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11.Remove plugs J32 and J33 from the pro- tection board.
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 compo-
nents during the remainder of the test proce- dure.
13.Check for the correct AC voltage at plugs J32 and J33 as follows. (DO NOT CHECK THE VOLTAGE ON THE PROTECTION BOARD!)
Test A: J33 - pin 1 (lead 32A) to J33 - pin 3 (lead 333) = 42 VAC
Test B:
VAC
Test C:
VAC
Test D:
If the voltage checks are good, then Auxiliary Transformer #1 is good.
If Test C is good but Tests A and B are not cor- rect, check the 5 amp circuit breaker (located on the front panel of the machine). See the Input and Auxiliary Circuit Wiring Diagram,
Figure F.6.
If all the secondary voltages are wrong or miss- ing, check the associated wiring to the trans- former primary. These voltages are most eas- ily checked at the terminal strip. The correct voltages are as follows:
H1 to H2 = 200 - 208 VAC
H1 to H3 = 220 - 230 VAC
H1 to H4 = 380 - 415 VAC
H1 to H5 = 440 - 460 VAC
If these voltages are wrong or missing, check the associated wiring to the transformer prima- ry. Check the leads at power switch S1. See the Input and Auxiliary Circuit Wiring Diagram,
Figure F.6.
If the correct voltages are applied to the pri- mary and the secondary voltages are incorrect, the transformer may be faulty. Replace the transformer. Refer to the T1 Auxiliary
Transformer Removal and Replacement procedure in this section of the manual.
14.After the test is completed and the prob- lem successfully repaired, reconnect plugs J30, J32 and J33 to the protection board.
15.Reconnect plug J5 to the T2 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.
