M/A-Com P5100 Series Maintenance manual - page 11
TROUBLESHOOTING PROCEDURES
SYMPTOM
PROCEDURE
No output voltage at J801
Check the following:
1. Open F1, F3, F4 or S1
2. AC voltage on W801
3. Open D1, D2, D3, or D4
No output voltage at F801A
Check the following:
1. Open F1, F2, F4 or S1
2. AC voltage on W801
3. Open D1, D2, D3, or D4
Low output voltage on F801A.
0 < Vo < 25.0 Vdc
Check the following:
1. If one of the dual diodes on D1, D2, D3, or D4 is shorted
NOTE: All four diode packages contain two diodes each
2. Line frequency < 50 Hz
3. Load current greater than 15.0 amps
Low output voltage on J801.
0 < Vo < 12.5 Vdc
Check the following:
1. If one of the dual diodes on D1, D2, D3, or D4 is shorted
NOTE: All four diode packages contain two diodes each
2. Line frequency < 50 Hz
3. Load current greater than 3.0 amps
High output voltage on F801A
(>30.0 Vdc) or J801 (>16.3 Vdc).
Check the following:
1. R1 not connected between pos. 1 and 2 on F801A
2. R2 not connected between pos. 1 and 4 on J801
3. Line frequency >50 Hz
Table 2 - 50 Hz Power Supply 19A149979P2
LBI-38551C
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