TM 55-1520-240-T
12-1.4 COPLT WSHLD CONT CIRCUIT BREAKER WILL NOT STAY CLOSED
12-1.4
FAULT lSOLATlON PROCEDURE
INITIAL SETUP
Applicable Configurations:
All
Took
Electrical Repairer’s Tool Kit,
NSN 5180-00-323-4915
Multi meter
Matarials:
None
Personnel Required:
68F20 Aircraft Electrician
References:
TM 55-1520-240-23
Equipment Condition:
TM 55-1520-240-23:
Battery Disconnected
Electrical Power Off
Hydraulic Power Off
DID CB OPEN BEFORE CPLT
WINDSHIELD ANTI-ICE SW
SET TO ON?
YES
LOCATE GROUND FAULT ON
WIRE W550-23-22, W645-62-
22, W559-110-22 BETWEEN
COPLT WSHLD CONT CB
AND CPLT WINDSHIELD
ANTI-ICE SW. REPAIR OR RE-
PLACE WIRE AS REQUIRED.
OPEN NOSE ACCESS PNL.
REMOVE DYNAMIC ABSORBER.
DISCONNECT PLUG 083P1
FROM COPILOT WINDSHIELD
ANTI-ICING CONTROL BOX.
CHECK FOR GROUND ON PLUG
083P1 PIN A IS GROUND
PRESENT,
YES
LOCATE GROUND FAuLT ON
WIRE W558-17-20,W639-141 -
20. OR W559-205-22
BETWEEN PLUG 083P1 AND
CPLT WINDSHIELD ANTI-ICE
SW. REPAIR OR REPLACE WIRE
AS REQUIRED.
REPLACE COPILOT’S WIND-
SHIELD ANTI-ICING CONTROL
BOX.
12-6
END OF TASK
