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Page Title:
Section III MAINTENANCE PROCEDURES |
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  TM 3-4240-302-30&P-5
Section III MAINTENANCE PROCEDURES
2-7.
POWER DISTRIBUTION UNIT.
This task covers the removal, repair, and installation of the following:
a. Panel (p. 2-27)
g.
Loop clamp (p. 2-33)
b. FAN circuit breaker CB1 (p. 2-28)
h.
Transformer/rectifier T1 (p. 2-34)
c. PE LIGHT circuit breaker CB3 or DC
i.
Relay K1 (p. 2-35)
POWER circuit breaker CB2 (p. 2-29)
j.
Printed circuit board A5 (p. 2-36)
d. 208 V indicator light (p. 2-30)
k.
Diode CR5 (p. 2-36)
e. RFI filter FL3 (p. 2-31)
I.
DUST FAN circuit breaker CB4 (p. 2-37)
f. Pressure switch S7 (p. 2-32)
m.
Fixed resistor R1 (p. 2-38)
n.
Wiring (p. 2-39)
INITIAL SETUP
Materials/Parts
Insulation sleeving (item 1, app C)
Tools
Electronic Equipment Tool Kit
Equipment Condition
TK-105/G
PDU removed from the filter unit
General Mechanics Tool Kit
(SC 5180-90-CL-N26)
Troubleshooting References
References
Refer to page 2-3
TB SIG 222
LOCATION
ITEM
ACTION
REMOVAL
Power
Panel
Remove 12 screws (1), and separate panel (2) from
Distribution Unit
housing (3).
REPAIR
Shielding gasket
Replace shielding gasket (4) if torn or broken.
INSTALLATION
Panel
Install panel (2) on housing using 12 screws (1).
2-27
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