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 TM 55-1905-223-24-18-1
2-46.
Repair Power Supply.
T h i s task covers:
a . Disassembly, b. Repair, c. Assembly.
INITIAL SETUP
Tools
Equipment Condition
T o o l k i t , general mechanic's,
E l e c t r i c a l power turned OFF at
emergency lighting panel EL-102
Tool kit, electrician's,
and switch tagged "Out of Service -
Do Not Operate."
Power supply removed (para. 2-45).
Materials/Parts
Transformer P/N P490-1
R e c t i f i e r P/N P502-1
Capacitor P/N P500-1
Circuit breaker (5 amp) P/N P503-1
Circuit breaker (20 amp) P/N P503-2
Warning tag, Item 1, Appendix C
DISASSEMBLY
a.
T a g and disconnect electrical leads to transformer (8) at (1, 2, 3. 4,) and
( 1 8 , 19, 20, 21).
Remove hexagon capscrews (7), l o c k w a s h e r s (6), and hexagon plain nuts (5).
b.
c.
Remove transformer (8).
T a g and disconnect electrical leads to rectifier (11).
d.
Remove machine screw (9) and lockwasher (10).
e.
R e m o v e rectifier (11).
f.
T a g and disconnect electrical leads to capacitor (15).
g.
Remove machine screws (16) and lockwashers (17).
h.
Remove capacitor (15) from capacitor mount (14).
i.
T a g and disconnect electrical leads to two circuit breakers (12) and (13)
l.
U n s c r e w nut holding circuit breaker to panel side.
k.
Change 1
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