ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49 A7-3-72/74
Table 3-1. DIRECT SUPPORT TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
M2A2 AIMING CIRCLE
RETICLE DOES NOT BECOME ILLUMINATED.
Step 1. Attach a serviceable M51 instrument light to the elbow telescope. Turn switch
on.
Step 2. Check for dirt on optical instrument window.
Wipe off optical instrument window, using lens paper (item 7, appx
Step 3. Recheck reticle for illumination.
If reticle is not illuminated, notify general support maintenance.
2. PARALLAX PRESENT IN OBJECTIVE SYSTEM.
Check objective cell assembly adjustment.
Notify general support maintenance.
3. TELESCOPE RETICLE HAS POOR DEFINITION.
Notify general supped maintenance.
4.. IMAGE IS POORLY DEFINED.
Notify general support maintenance.
5. IMAGE IS TILTED.
Notify general support maintenance.
6. RETICLE IS TILTED.
Notify general support maintenance.
