TM-9-1290-262-24-P
AIMING CIRCLE, M2A2, W/E
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT,AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-1290-262-24-P - Page 22 of 192
ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49A7-3-72/74
Table 2-3. UNIT TROUBLESHOOTING (cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. LAMPS DO NOT LIGHT.
Step 1. Turn switch on, and check to see if both lamps light.
a.
b.
c.
d.
e.
Replace batteries. Refer to TM 9-1290-262-10.
Replace defective lamps (p 2-8).
If lamps still do not light, replace M51 instrument light.
Clean and stretch compression spring in cap.
Clean battery contact at base of switch.
Step 2. Rotate switch to check bracket lamp.
If bracket lamp does not brighten, replace M51 instrument light.
Section IV. UNIT MAINTENANCE PROCEDURES
Section Index
Paragraph
Page
2-5.
M2A2 Aiming Circle and Elbow Telescope—Maintenance Instructions. . . . . . . . . . . 2-7
2-6.
M51 Instrument Light-Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-6
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