4-10. UNIT TROUBLESHOOTING. - Continued
TABLE 4-3. UNIT TROUBLESHOOTING - Continued
TEST OR INSPECTION
13. BLACKOUT WARNING ASSEMBLY DOES NOT OPERATE PROPERLY.
Step 1. Check blackout assembly switch for proper operation.
Step 2. Check warning buzzer for proper operation.
14. CEILING LAMP ASSEMBLY DOES NOT OPERATE PROPERLY.
Step 1. Inspect lamp assembly for security of mounting.
Step 2. Inspect fluorescent tubes for discoloration or failure.
Step 3. Check lamp assembly tube sockets for damage and ability to hold tubes securely.
Step 4. Inspect starter for proper operation.
Step 5. Inspect lamp assembly wiring for bared conductors and for cut, chafed or brittle insulation.