TM 5-3610-259-14
Table 2-4.
ORGANIZATIONAL TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7.
EXPOSURE LAMP OPERATES IN AUTOMATIC MODE BUT DOES NOT OPERATE IN MANUAL MODE.
Replace manual switch (S2) (paragraph 2-16.12).
8. EXPOSURE LAMP OPERATES IN MANUAL MODE BUT NOT IN AUTOMATIC MODE.
Step 1.
Check for 12 V ac output of filament transformer (FLT-1) as follows:
(a)
(b)
(c)
(d)
(e)
(f)
Turn off power panel circuit breaker.
Remove two mounting screws for control panel from inside unit.
Carefully lift control panel off lip and position so that
access to control circuit board is obtained.
Connect multimeter to connectors FT1 and FT2.
Turn on power panel circuit breaker.
Press master power switch and observe voltage reading on
multimeter.
(1) If 12 V ac is present, refer to direct/general support
maintenance.
(2) If 12 V ac is missing, replace filament transformer
(FLT-1) (paragraph 2-16.15).
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