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TROUBLESHOOTING AND REPAIR | |||
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| MAIN TRANSFORMER TEST (continued) |
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| 14. Locate the following leads on plug J9 | c. If any of the voltages tested are | |
| on the M19248 snubber PC board and | incorrect, check for loose or broken | |
| on plug J5 on the G3521 control PC | leads between the test points and | |
| board. See Figure F.1. | the main transformer. |
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| G3521: |
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| PLUG |
| LEAD | LOCATION |
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| 206 | 3J5 |
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M19248: |
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| PLUG |
| LEAD | LOCATION |
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| 208S | 2J9 |
| 209S | 6J9 |
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15.Turn the machine ON.
16.Make the following voltage tests at plug J9 on the M19248 snubber PC board and at plug J5 on the G3521 control PC board.
a.Turn the machine OFF between each test.
b.Carefully insert the meter probes into the back of each Molex plug pin cavity to perform the test.
FROM | TO | EXPECTED |
LEAD | LEAD | VOLTAGE |
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208S | 209S | 56VAC |
(2J9 on | (6J9 on |
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M19248) | M19248) |
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208S | 206 | 28VAC |
(2J9 on | (3J5 on |
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M19248) | G3521) |
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209S | 206 | 28VAC |
(6J9 on | (3J5 on |
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M19248) | G3521) |
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d.If ALL the voltages tested are incor- rect or missing, go to step 16.
17.Test for correct nameplate input voltage between the H1 lead at the ON/OFF POWER SWITCH to H2 or H3 (H5 if connected for 575 VAC) at the reconnect panel. Voltage tested will vary depending on input voltage connection. See wiring diagram for test point locations.
a.If the voltage test is incorrect,
b.If the correct nameplate voltage is being applied to the main trans- former and one or more of the sec- ondary voltages are missing or are incorrect, the main transformer may be faulty. Replace.
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