TM 9-1240-400-34&P
3-6.
TROUBLESHOOTING PROCEDURES (CONT).
Table 3-2. GENERAL SUPPORT TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
M139 ELBOW TELESCOPE
1.
M139 ELBOW TELESCOPE (1) IS NOT COLLIMATED.
Check on test fixture.
Collimate. Refer to page 3-24.
2.
M139 ELBOW TELESCOPE (1) HAS MOISTURE OR FOREIGN MATTER.
Observe visually.
a.
Purge. Refer to TM 750-116.
b.
Disassemble, clean, and reassemble. Refer to page 3-7.
3-4
