TM 1-1520-238-T-6
9–208
Change 3
9–44.
CAUTION/WARNING INDICATORS – ARE NOT LIGHTED WITH BATTERY ON
9–44
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
References:
TM 11-1520-238-23-1
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
R295 door opened
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. Check for 24 VDC at positive terminal of
(BT1)J3.
Is voltage present?
YES
Go to step 3.
NO
Go to step 2.
2. Detach wire from battery relay K6-A1. Open
circuit breakers MAINT LT (CB8) and APU
(CB148). Check for short between:
P87 positive terminal and ground,
CB8-1 and ground,
P80-W and ground.
Does short exist?
YES
Repair shorted wire and replace
battery (TM 1-1520-238-23)
NO
Replace battery
(TM 1-1520-238-23)
3. Check for open between:
P87 negative terminal and ground,
P87 positive terminal and K6-A1,
K6-A2 and (A402)TB1-1-A.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–41.
NO
Go to step 4.
4. Check for open between K6-X1 and K6-X2.
Does open exist?
YES
Replace battery relay K6
(TM 1-1520-238-23)
NO
Go to step 5.
5. Check for 24 VDC at battery relay K6-X1.
Is voltage present?
YES
Go to step 7.
NO
Go to step 6.
6. Check for open between:
K6-1 and P80-W,
K6-X1 and P80-X.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–41.
NO
Replace battery charger
(TM 11-1520-238-23-1).
