TM-9-1240-400-34-P

TELESCOPE; PANORAMIC: M115, ELBOW: M139, MOUNT: M138 AND M137

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1993

TM-9-1240-400-34-P - Page 102 of 344

TM 9-1240-400-34&P

3-6.

TROUBLESHOOTING PROCEDURES (CONT).

Table 3-2.

GENERAL SUPPORT TROUBLESHOOTING (cont)

TM 9-1240-400-34&P

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

6.

COVER ASSEMBLY (4) IS NOT SECURED PROPERLY.

Check for looseness.

Tighten cover assembly.

Refer to page 3-7.

7.

PLATE (5) ON COVER ASSEMBLY IS NOT LEGIBLE.

Observe visually.

Replace plate.

Refer to page 3-7.

OBJECTIVE CELL ASSEMBLY

8.

OBJECTIVE CELL ASSEMBLY (6) HAS MOISTURE OR FOREIGN MATTER.

Observe visually.

a.

Purge.

Refer to TM 750-116.

b.

Disassemble, clean, and reassemble.

Refer to page 3-16.

9.

PARALLAX EXCEEDS 0.1 MIL AT 125 METERS.

Observe visually.

Adjust objective cell assembly.

Refer to page 3-19.

3-6