C 1, TM 9-6650-221-35
Section I. GENERAL
Caution: Operation of materiel without a
preliminary examination can cause further damage
Troubleshooting is a systematic isolation and remedy of
to a faulty component.
Exercise care during
malfunction and defective components by means of
troubleshooting, to avoid further damage.
symptoms and tests. Close adherence to the procedure
covered herein will materially reduce the time required to
locate trouble and restore the equipment to normal
organizational maintenance, refer to TM 9-2350230-12.
Table 4-1. Troubleshooting
1. Poor visibility
Chipped, scratched or otherwise
Replace optical instrument
in body assembly 10513620.
a. Disassemble and repair
b. Faulty machine thread plug
b. Replace machine thread
plug and/or gasket i
gasket 5330-683-9573 (19
c. Faulty sealing around optical
Remove. replace. and reseal
instrument window 6650-902-
3. Head assembly does not
Faulty catch(es) 1240-191-9213 (6,
attach securely to mount
Section II. TROUBLESHOOTING PROCEDURES
The troubleshooting procedure described in this section
Table 4-1 describes the troubleshooting procedure.
is one of determining the cause of the malfunction and
taking the necessary action.