ONE OR MORE FLUORESCENT LAMPS FAIL TO LIGHT (M129A4 ONLY)

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DIRECTIONAL SIGNALS INOPERATIVE

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TM-9-2330-380-14-P Semitrailer Van: Electronic Tactical 12-Ton 4-Wheel XM1063 (NSN 2330-01-224-9244) and M129A4 (NSN 2330-01-372-5642) Manual

BRAKES WILL NOT RELEASE

TM 9-2330-380-14&P

Table 4-2. Unit Troubleshooting (cont'd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

7. ONE OR MORE FLUORESCENT LAMPS FAIL TO LIGHT (M129A4 ONLY)

Step 1. Check for defective lamp.

Replace defective lamp (para. 4-40).

Step 2. Check for defective starter.

Replace defective starter (para. 4-40).

Step 3. Check for defective fixture.

Replace defective fixture (para. 4-40).

8. All 110-VOLT RECEPTACLES INOPERATIVE (M129A4 REGISTRATION NUMBERS

NX0RKB AND SUBSEQUENT)

WARNING

Make sure power is disconnected to prevent injury to personnel.

Step 1. Disconnect power source and check for dirty or corroded sockets or contact pins.

Clean sockets or contact pins.

Step 2. Open circuit breaker and using a multimeter, check for defective circuit breaker(s).

Replace defective circuit breaker(s) (para. 4-27).

Step 3. Check for broken wire or loose connections.

Tighten, repair or replace wire.

9. ONE OR MORE 110-VOLT RECEPTACLES (BUT NOT ALL) FAIL TO WORK (M129A4

REGISTRATION NUMBERS NX0RKB AND SUBSEQUENT)

Step 1. Disconnect power source and check for dirty or corroded sockets or contact pins.

Clean sockets or contact pins.

Step 2. Check for defective 110-volt receptacles.

Replace defective 110-volt receptacle (para. 4-41).