TM 5-3610-259-14
Table 2-5.
DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. EXPOSURE TIME VARIES NOTICEABLY DESPITE USING SAME UNITS OF LIGHT - Cent
(2) If timer elapses correctly, replace integrator circuit
board (paragraph 2-20.1).
(3) If problem remains, replace photodetector assembly
(paragraph 2-16.23).
4.
EXPOSURE LAMP DOES NOT OPERATE IN AUTOMATIC MODE.
(a) Replace control circuit board (paragraph 2-20.2).
(b) If problem remains, replace integrator circuit board (paragraph
2-20.1).
5. EXPOSURE LAMP DOES NOT OPERATE IN ANY MODE OF OPERATION.
Check continuity of strike transformers as follows:
(a) Turn off power panel circuit breaker.
(b) Disconnect plug connector for each transformer from 3kW power
supply circuit board.
(c) Using multi meter, check primary side of transformers at plug
connectors for continuity.
(d) Connect one multimeter lead on terminal board for autotrans-
former, and the other lead on fuse clip for exposure lamp and
check continuity of transformer’s secondary sides.
(1) If all continuity checks are good, replace 3kW power
supply circuit board (paragraph 2-20.5).
(2) If any continuity check fails, replace defective strike
transformer (paragraph 2-20.6).
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