TM 5-5420-280-10
0038 00
Pallet Electrical Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Refer to WP 0002 00, Pallet Equipment Features, for
location and description of control valves and limit
switches. Launch and retrieval functional codes are
listed in malfunction titles where applicable.
1. RCU WILL NOT POWER UP USING LPU BATTERIES
Step 1. Check that red main power switch is turned to ON position.
Move red main power switch to ON position. Refer to WP 0007 00.
Step 2. If not illuminated, check light on LPU control box for discharged
LPU batteries.
Charge batteries as necessary. Refer to WP 0027 00.
Step 3. Check that all three emergency stops are in the OUT position.
a. Disengage emergency stops. Refer to WP 0007 00.
b. If any emergency stop is damaged, notify field maintenance.
Step 4. Connect RCU to electrical contol box receptacle. Refer
to WP 0007 00.
If RCU will not power up, notify field maintenance.
END OF TESTING
2. RCU WILL NOT POWER UP USING CBT
Step 1. Check that power cable is properly connected between CBT and
pallet.
If power cable is not properly connected, connect power cable
between CBT and pallet. Refer to WP 0007 00.
Step 2. Check that all three emergency stops are in the OUT position.
a. Disengage emergency stops. Refer to WP 0007 00.
b. Replace emergency stop if damaged, notify field maintenance.
Step 3. Check and reset circuit breaker.
If circuit breaker cannot be reset, notify field maintenance.
Step 4. Check that green LED lights are lit on expansion modules IQAN-XP
and IQAN-XS.
If lights are lit and system will not operate, notify field maintenance.
END OF TESTING
