TM 9-2350-261-20-1
1. Turn MASTER SWITCH to ON.
2. Turn I.R. switch to ON (See your -10).
3. Does I.R. periscope work?
1. Replace original I.R. power pack
(page 12-134 or 12-137).
2. Verify no faults found.
1. Remove periscope power circuit 517 lead (1) from I.R.
power pack (2).
2. Measure resistance between lead ends (1) and (3)
(inner and outer).
3. Does multimeter read O ohms both times?
1. Replace I.R. periscope power
lead.
2. Install original I.R. power
pack
(page 12-134 or 12-137).
3. Verify no faults found.
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