TM 55-1930-209-14&P-10 Table 3-2.  Exterior Lighting System Troubleshooting Condition Possible Cause Suggested Action 1. Bow and four port exterior a. Circuit breaker P13 on a. Close circuit breaker lights do not come on when switchboard open rotary switch is turned on b. Circuit breaker 1 P13 on b. Close circuit breaker power panel 3 open c. Rotary on/off switch not c. Check switch operating normally d. Faulty circuits d. Check circuit e. Bulb(s) burned out e. Replace bulb(s) 2. Aft and starboard exte- Same as a thru e in prob- Same as a thru e in problem 1 rior lights do not come on lem 1 when rotary is switch turned on 3. Bow floodlight does not come Same as a thru e In prob- Same as a thru e in problem 1 on when rotary switch is lem 1 turned on 4. Stern floodlights do not come Same as a thru e in prob Same as a thru e in problem 1 on when rotary switch is lem 1 turned on 5. Forward searchlight on port-a Circuit breaker 2P13 on a. Close circuit breaker side does not come on when power panel 3 open rotary switch is turned on b. Circuit breaker P13 on b. Close circuit breaker switchboard open c. Rotary switch not operating c. Check switch normally d. Bulb burned out d. Replace bulb e. Faulty circuits e. Check circuits 6. Aft searchlight on starboard Same as a thru e in prob- Same as a thru e in problem 5 side does not come on when lem 5 rotary switch is turned on 7. Shore discharge hose deploy-a Plugs on top of deckhouse a Insert plugs into recep- ment red and white status not plugged in tacles lights do not come on when circuit breaker 5P14 on 24 Vdc b. Bulb(s) burned out b. Replace bulb(s) power panel is closed c. Faulty circuits c. Check circuits d. Emergency electrical sys- d. Troubleshoot tem malfunctioning( TM 55-1930-209-14 &P-9) 3-11