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TROUBLESHOOTING & REPAIR
(T2) AUXILIARY TRANSFORMER TEST (continued)
TABLE F.6 - J21 AND J22 (6 Pin) VOLTAGES
TEST POINT |
| TEST POINT |
| EXPECTED VOLTAGE |
H1 (1J22) |
| H2 (4J22) |
| 200 - 208VAC |
H1 (1J22) |
| H4 (3J22) |
| 380 - 415VAC |
H1 (1J22) |
| H5 (6J22) |
| 440 - 460VAC |
Brown (8J21) |
| Brown (3J21) |
| 12VAC |
Red (2J21) |
| Red (6J21) |
| 24VAC |
Blue (9J21) |
| White (5J21) |
| 18VAC |
Blue (4J21) |
| White (5J21) |
| 18VAC |
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| J21 AND J22 (8 Pin) VOLTAGES |
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TEST POINT | TEST POINT | EXPECTED VOLTAGE |
H1 (1J22) | H2 (5J22) | 200 - 208VAC |
H1 (1J22) | H4 (7J22) | 380 - 415VAC |
H1 (1J22) | H5 (8J22) | 440 - 460VAC |
H1 (1J22) | H6 (4J22) | 560 - 600VAC |
Brown (8J21) | Brown (3J21) | 12VAC |
Red (2J21) | Red (6J21) | 24VAC |
Blue (9J21) | White (5J21) | 18VAC |
Blue (4J21) | White (5J21) | 18VAC |
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7.If the correct test voltages are present, the auxiliary transformer is good.
8.If any of the voltages are missing or very low with the proper primary voltage applied, the auxiliary transformer may be faulty.
9.If the auxiliary transformer tests good but it does not function when connected to the
10.When finished with the test, replace plugs 21 and 22 and the case wraparound.
NOTE: There should not be continuity between the isolated windings. With the input power removed from the transformer, check the windings using the table below.
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TEST POINT | TEST POINT | EXPECTED RESISTANCE |
H1 | Brown Lead | Greater than 100 K ohms |
H1 | Red Lead | Greater than 100 K ohms |
H1 | Blue/White Leads | Greater than 100 K ohms |
Brown Leads | Red Leads | Greater than 100 K ohms |
Brown Leads | Blue/White Leads | Greater than 100 K ohms |
Red Leads | Blue/White Leads | Greater than 100 K ohms |
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