Troubleshooting Assistance; 4.3.1 Strobe Flash Verify Led - Out; 4.3.2 Control Power On Led - Out; 4.3.3 Primary Timing Led - Out - TWR Lighting E-1DBSL Manual

DUAL MEDIUM INTENSITY LED/STROBE
4.3

TROUBLESHOOTING ASSISTANCE

4.3.1 Strobe Flash Verify LED - Out

4.3.2 Control Power on LED - Out

4.3.3 Primary Timing LED – Out
4.3.4 False or Nonexistent Strobe Alarm (SF)
M.E-2018.E-1DBSL
11-11-08 REV 1-19-18
MODEL E-1DBSL
4.3.1.1 Observe high voltage LED (D14) on the high voltage rectifier PCB
#2, to determine if it is available. If the LED is dim or out
completely, then check the high voltage capacitor bank (C103 -
C109 daymode, C102 nightmode) for a short. If no capacitor is
found to be shorted, check the resonant cap (C101) for a short. If
the resonant cap is okay, replace PCB #2. If the LED is at full
illumination, go to the next step.
4.3.1.2 Check the status of trigger LED6. If LED is off, check fuse F2. If
blown, replace with exact type of fuse. If the fuse blows again,
replace PCB #1. Check transformer T1. Replace as necessary. If
LED is okay, go to the next step.
4.3.1.3 If steps 4.3.1.1 and 4.3.1.2 check out okay, re-lamp the
STLDBEACON2A.
Check interlock circuit for an open circuit. If open, make the necessary
repairs. If okay, check fuse F3 in the cabinet. Replace if bad.
Observe the status of the timing LED8. If the LED is dim or out completely,
check LED9, and if dim or out, replace PCB #1. If one or both are lit, you
should have timing.
4.3.4.1 If alarm trips when the system appears to be working normally, or
fails to show an alarm when there is an obvious failure, replace
PCB #1.
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