TM 5-6675-317-14
Table 4-3. DIRECT/GENERAL SUPPORT TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
ONE ILLUMINATOR DOES NOT WORK - Cont
Step 3.
Check for 120 V ac input at potentiometer.
(a) If correct voltage is not present, proceed to Step 4.
(b) If correct voltage is present, replace potentiometer
(paragraph 4-20.5).
Step 4.
Check wiring for continuity between switch and potentiometer.
Repair or replace wiring.
3.
ILLUMINATORS WORK BUT PILOT LIGHT IS OFF.
Check for correct voltage at pilot light leads.
(a) If correct voltage is present, check wiring.
(b) If not present, replace pilot light (paragraph 4-20.2).
4-20. MAINTENANCE PROCEDURES.
a.
This section contains instructions covering direct/general support mainte-
nance functions for the zoom transfer scope.
Personnel required are listed only if
the task requires more than one.
b.
After completing each maintenance procedure, perform operational check to be
sure that equipment is properly functioning.
INDEX
PROCEDURE
PARAGRAPH
Replace Power Switch. . . . . . . . . . . . . . . . . . . . . . . . . .4-20.1
Replace Pilot Light . . . . . . . . . . . . . . . . . . . . . . . . . .4-20.2
Replace Power Cord. . . . . . . . . . . . . . . . . . . . . . . . . . .4-20.3
Replace Foot Switch . . . . . . . . . . . . . . . . . . . . . . . . .4-20.4
4-35
