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Figure 2. Testing Voltage to Dome Lamp.
Table 1. Dome Lamp Does Not Operate Continued.

Field Maintenance Manual For Military 621G Scraper -2 Page Navigation
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TM 5-3805-296-23-2
0139
Table 1. Dome Lamp Does Not Operate Continued.
0139
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Dome Lamp Does Not
5. Turn battery disconnect switch to
Operate Continued
ON position (TM 5-3805-296-10).
6. Turn mode switch on military light
switch to SER. DRIVE position
(TM 5-3805-296-10).
7. Using digital multimeter
Voltage 18 to 26 V Proceed to step 8.
(WP 0540), test for voltage
Voltage Less Than 18 V Replace
between connector H-C18
headliner wiring harness (WP 0497).
terminal C and terminal B
Proceed to Test Step 5.
(WP 0012, Figure 232).
8. Open cab door
(TM 5-3805-296-10).
9. Using digital multimeter
Voltage 18 to 26 V Replace dome
(WP 0540), test for voltage
lamp (WP 0471).
between connector H-C18
Proceed to Test Step 5.
terminal A and terminal B
Voltage Less Than 18 V Proceed to
(WP 0012, Figure 232).
Test Step 4.
Test Step 4. Test Voltage to Door
Switch.
1. Turn mode switch on military light
switch to OFF position
(TM 5-3805-296-10).
2. Turn battery disconnect switch to
OFF position (TM 5-3805-296-10).
3. Remove screw (Figure 3, Item 1)
and cover (Figure 3, Item 2) from
bracket (Figure 3, Item 3).
Figure 3. Door Switch.
0139
0139-6


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