TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 314 of 926

TM 9-2320-283-20-1

2-11.

TROUBLESHOOTING PROCEDURES (Continued).

MALFUNCTION

INSTRUCTION

INDICATION

YES

NO

62. ONE BLACKOUT MARKER LAMP NOT WORKING (Continued).

•·Faulty right blackout marker lamp is shown in this

procedure.

Apply similar troubleshooting technique for

left blackout marker lamp.

1

Disconnect circuit

23B-TN from 23C-TN at

connector, and go to

step 2.

2

Check for voltage at

12-volts dc

Connect circuit

Repair circuit

circuit 23B-TN terminal

nominal

23B-TN to

23B-TN (para

of connector

23C-TN, and go

3-127).

To step 3.

2-189