MOUNTING SURFACE

TM 9-4931-710-14&P

5-3 GENERAL - CONTINUED

Table 5-2. TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

LOCATION

CORRECTIVE ACTION

MOUNTING SURFACE

3. NO ILLUMINATION - CONTINUED

If not illuminated, double bag the item and notify the

RSO/RPO immediately.

M139A1/M140A1/M154

Insure the battery is installed.

Replace battery.

If still not illuminating change the battery pack.

NOTE

The following procedure applies to all versions of the alinement device.

4. ILLUMINATED, BUT NO RETICLE PATTERN

Observe visually.

a. Replace lens (2) (p 5-10 and 5-13).

b. Focus lens (2) (p 5-28).

5-6

Change 3