TROUBLESHOOTING PROCEDURES
Printed in U.S.A.
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-38551
11
Summary of Contents for MASTR II 19A149979P1
Page 13: ...60 Hz POWER SUPPLY 19A149979P1 Rev A ASSEMBLY DIAGRAM LBI 38551 13...
Page 14: ...60 Hz POWER SUPPLY 19A149979 Rev A 289PS3 Sh 1 Rev C SCHEMATIC DIAGRAM LBI 38551 14...
Page 15: ...PARTS LIST LBI 38551 15...
Page 16: ...50 Hz POWER SUPPLY 19A149979P2 Rev A ASSEMBLY DIAGRAM LBI 38551 16...
Page 17: ...50 Hz POWER SUPPLY 19A149979P2 Rev A 289PS4 Sh 1 Rev C SCHEMATIC DIAGRAM LBI 38551 17...
Page 18: ...PARTS LIST LBI 38551 18...
