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| TROUBLESHOOTING & REPAIR |
ANALOG CONTROL POWER SUPPLY PC BOARD TEST (CONTINUED)
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9.If all the voltages are correct, the Analog Control Power Supply PC Board is operat- ing properly.
10.If any of the output voltages are not correct and the input voltage is correct, the Analog Control Power Supply PC Board may be faulty.
11.If the input voltage is not correct, check leads #436, #437 and their associated plugs for loose or faulty connections. See the Wiring Diagram. Perform the DC Buss
Power Supply PC Board Test.
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TABLE F.1
ANALOG CONTROL POWER SUPPLY PC BOARD VOLTAGE TABLE
Positive Meter Probe | Negative Meter Probe | Acceptable Voltage | Conditions/Comments | |
Test Point | Test Point | Reading | ||
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Plug P41 – Pin 1 | Plug P41 – Pin 2 | 38.0 – 42.0 VDC | Supply from DC Buss | |
Power Supply Board | ||||
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Plug P42 – Pin 1 | Plug P42 – Pin 6 | 18.0 – 21.0 VDC | Supply for right side | |
Chopper PC Board | ||||
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Plug P42 – Pin 3 | Plug P42 – Pin 8 | 18.0 – 21.0 VDC | Supply for left side | |
Chopper PC Board | ||||
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Plug P42 – Pin 10 | Plug P42 – Pin 4 | 14.0 – 16.0 VDC | +15 VDC Supply to | |
Peripheral Board | ||||
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Plug P42 – Pin 5 | Plug P42 – Pin 7 | 14.0 – 16.0 VDC | +15 VDC Supply to | |
Weld Control Board | ||||
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Plug P42 – Pin 2 | Plug P42 – Pin 7 | 4.5 – 5.5 VDC | +5 VDC Supply to | |
Weld Control Board | ||||
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Plug P42 – Pin 9 | Plug P42 – Pin 7 | |||
Weld Control Board | ||||
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12.If finished testing, perform the Case Cover Replacement procedure.