TM 9-4940-568-20
2-76
Table 2-9. Electrical System Troubleshooting (CONT).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ONE OR MORE DOME LIGHTS ARE INOPERABLE (CONT).
4
5
5
Open 24 VDC panel (4) (Para 3-3) and check for voltage between output side of terminal position 91 and known
good ground.
If voltage is present, repair or replace wire from terminal position 91 to dome light (see
schematic Figure 2-5). If voltage is not present, go to next test.
Check for voltage between output side of circuit breaker #4 (5) and a known good ground.
If voltage is present, repair wire between circuit breaker #4 and input side of terminal
position 91 (see schematic Figure 2-5). If voltage is not present, go to next test.
Check for voltage between input side of circuit breaker #4 (5) and a known good ground.
If voltage is present, replace circuit breaker #4 (5) (Para 3-3). If voltage is not present, go
to next test.
