ARMY TM 9-1240-379-34
MARINE CORPS TM 04332A-34
Table 2-1. TROUBLESHOOTING (cont)
TEST OR INSPECTION
Step 2. Perform continuity check between contact and electrical ring. (Refer to
If malfunction is not corrected, replace daylight body
3. POOR VISION THROUGH DAYLIGHT BODY ASSEMBLY.
Check for proper alinement of reticle.
Adjust diopter length.
Step 2. Check for dirt or fingerprints on all exposed optical surfaces.
Clean optics in accordance with TM 9-254.
Step 3. Check for condensation; if moisture is present, check for defective sealing
or a defective valve core and purging valve stem using a soapy solution.
Purge and charge in accordance with TM 750-116.
If sealing is defective, replace daylight body assembly (page
Check for damaged or defective incandescent lamp (page 2-27)
Step 2. Check if electron tube reflects green grain image when rotary switch is