Section II. TROUBLESHOOTING - TM-9-4931-710-14-P0030

TM 9-4931-710-14&P

Section II.

TROUBLESHOOTING

5-3 GENERAL - CONTINUED

C AU T I O N

Before starting any maintenance procedures, check for illumination in a dark area. If not

illuminated, follow the evacuation procedures on the warning page.

The symptom index can be used as a quick guide to troubleshooting. Common malfunctions are

listed in alphabetical order with a page number reference to the troubleshooting table, where a test

or inspection and corrective action are provided.

Table 5-2 lists the common malfunctions which may be found during maintenance of the alinement

device. Perform the tests/inspections and corrective actions in the order listed.

SYMPTOM INDEX

Troubleshooting

Procedure

(Page)

MOUNTING SURFACE

Base does not seat properly.......................................................................................... 5-5

OPTICS

Lens fogged or condensation present ........................................................................... 5-5

No illumination .............................................................................................................. 5-5

Illuminated, but not reticle pattern ................................................................................. 5-6

5-4