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ELECTRICAL SYSTEM TROUBLESHOOTING SYMPTOM INDEX (Contd)
Electrical System Troubleshooting (Contd).

TM-5-5420-280-23-P Rapidly Emplaced Bridge (REB) NSN: 5420-01-481-3959 Manual
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TM 5-5420-280-23&P
0008 00
TROUBLESHOOTING PROCEDURES
RAPIDLY EMPLACED BRIDGE (REB)
NSN 5420-01-481-3959 P/N 12480471
ELECTRICAL SYSTEM TROUBLESHOOTING
NOTE
Refer to the general instructions in Introduction to
Troubleshooting, WP 0004 00, prior to performing electrical system
troubleshooting.
Refer to Pallet Electrical System Schematic, WP 0122 00, and
Winch Electronic Box Electrical Schematic, WP 0124 00, when
performing troubleshooting malfunctions.
Electrical System Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. RCU WILL NOT POWER UP USING LAUNCH POWER UNIT (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 TM 5-5420-280-10.
Step 2. Check that all three emergency stops are in the OUT position.
a. Disengage emergency stops. Refer to TM 5-5420-280-10.
b. Replace emergency stop if damaged. Refer to WP 0049 00 and WP 0052 00.
c. Check operation of IQAN-XP and IQAN-XS LED lights. Refer to WP 0004 00 step h.
d. Check circuit breaker FI for 24 volts and reset or replace as necessary . Refer to
WP 0049 00 and WP 0052 00.
Step 3. Check LPU engine batteries for low volts.
Connect CBT slave cable to pallet to charge system or replace batteries as necessary. Refer
to WP 0113 00.
Step 4. Check for 24 volts at end of RCU cable connector.
a. If RCU cable connector has voltage, repair or replace RCU box. Refer to WP 0050 00.
b. If RCU cable connector has no voltage perform step 5.
Step 5. Check for 24 volts at RCU receptacle on electrical box.
a. If electrical box RCU receptacle has no voltage, check and reset circuit breaker located in
electrical box.
b. If electrical box RCU receptacle has voltage, repair or replace jumper cable between
electrical box and RCU stowage box. Refer to WP 0051 00.
c. If electrical box RCU receptacle has no voltage, repair or replace electrical connector.
Refer to WP 0051 00 or wires. Refer to Electrical System Schematic. Refer to WP 0122 00
for wiring.
END OF TESTING
0008 00-1






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