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| TROUBLESHOOTING & REPAIR |
CAPACITOR BALANCE TEST (continued)
TABLE F.4 – EXPECTED VOLTAGE READINGS
If VAC Input is: | VDC at terminals #9 (+) and #12 |
| should be approximately: |
|
|
460 VAC | 325VDC |
440 VAC | 311VDC |
415 VAC | 293VDC |
380 VAC | 269VDC |
|
|
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5.Adjust the Peak and Background controls to the minimum settings (controls on case front).
6.Jumper together pins "C" and "D" on the 14 pin amphenol. This will energize the output terminals.
7.Test for VDC across terminals #9 and #12 of one switch board and repeat the test for the other switch board. See Table F.4 in this procedure for expected voltage readings. See Figure F.10.
A.If less than 15VDC difference is mea- sured between each switch board, the test is OK.
B.If more than 15VDC difference is mea- sured between each switch board, the switch board(s) and or power PC board may be faulty. Perform the Switch Board Test. Perform the Power Board
Test.
8.After all tests are completed, remove the jumper between pins C and D on the
9.Install the case wraparound cover.
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