M/A-Com P5100 Series, Руководство по обслуживанию

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MAINTENANCE
SYMPTOM PROCEDURE
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 5-3: Symptoms and Procedures for 60 Hz Power Supply 19A149979P3
SYMPTOM PROCEDURE
No output voltage at J801
Check the following:
1. Open F1, F3 or S1.
2. AC voltage on W801.
3. Open CR1, CR2, CR3, or CR4.
No output voltage at F801A
Check the following:
1. Open F1, F2 or S1.
2. AC voltage on W801.
3. Open CR1, CR2, CR3, or CR4.
Low output voltage on F801A.
0 < Vo < 25.0 VDC
Check the following:
1. If one of the dual diodes on CR1, CR2, CR3,
or CR4 is shorted.
NOTE : All four diode packages contain two
diodes each.
2. Line frequency < 60 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 CR1, CR2, CR3,
or CR4 is shorted.
NOTE : All four diode packages contain two
diodes each.
2. Line frequency < 60 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 >60 Hz.
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