TM 9-2350-287-20-1
2-19. TROUBLESHOOTING CHART (continued).
h. LIGHTS (continued).
(11 ) ONE OR BOTH BLACKOUT (BO) DRIVE LIGHTS
FAIL TO OPERATE. All other lights operate.
Initial Setup:
Tools/Test Equipment:
Equipment Conditions:
Digital multimeter (DMM) (Item 13, Appendix I)
MASTER switch set to OFF (refer to
General mechanic’s tool kit (Item 24,
TM 9-2350-287-10).
Appendix I)
l Lighting switch in BO DRIVE position and
dimmer switch set on low beam
Materials/Parts:
(refer to TM 9-2350-287-10).
Lockwasher (4) (Item 119, Appendix H)
NOTE
l Instead of using multi meter
for voltage
check, STE/lCE
troubleshooting,
INDIVIDUAL
BATTERY VOLTAGE TEST-TEST
89 maybe performed.
l Instead of using multi meter
for continuity check, STE/lCE
troubleshooting, TEST 91 may
be performed.
l This procedure can be used for both
BO drive lights.
A. 1. Remove four screws and Iockwashers and
cover from headlight assembly. Discard
Iockwashers.
2. Remove light bulb from socket on headlight
assembly.
3. Place red lead of multimeter in light bulb
socket and ground black lead.
4. Turn MASTER switch ON (refer to TM 9-
2350-287-10).
5. Check for 24 ± 3 vdc.
6. Turn MASTER switch OFF (refer to TM 9-
2350-287-10).
Is voltage indicated?
Continued on next page
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