ARMY TM 5-6115-612-12
Table 4-3. Organizational Troubleshooting
TEST OR INSPECTION
PANEL LIGHTS DO NOT COME ON.
Ensure that battery cable plug connector is securely connected.
Tighten battery cable plug connector.
Ensure that DC CIRCUIT BREAKER is pressed in.
If pressed in, go to Step 3.
If DC CIRCUIT BREAKER does not stay pressed in, test/replace DC CIRCUIT
BREAKER (paragraph 4-31).
Check light bulbs by replacing with new ones.
If still no lights, go to Step 4.
Place PANEL LIGHTS switch in ON position. Check for 24 Vdc between terminal 1 (+)
and terminal 2(-) of affected light (DS11 or DS12).
If no voltage, go to Step 5.
If voltage is good, replace lamp socket (paragraph4-31).
Check for 24 Vdc at PANEL LIGHTS switch S3-3(+) and TB3(-).
If no voltage, go to Step 6.
To prevent injury, ensure that battery is disconnected
before repairing or replacing damaged wires.
If voltage is present, disconnect battery. Visually inspect and perform continuity
check on wires U128A18 and V102U18N. Replace wires if damaged or no
Check for 24 Vdc at PANEL LIGHTS switch S3-2 and TB3-2.
If no voltage, go to Step 7.