Section Ill. TROUBLESHOOTING
list of probable causes of the trouble. The
21. General
possible remedy recommended is described
This section contains information useful in
opposite the probable cause. Any trouble
diagnosing and correcting unsatisfactory oper-
beyond the scope of organizational mainte-
ation or failure of the surveying target set.
nance will be reported to direct support main-
tenance.
Each trouble symptom stated is followed by a
22. No Illumination on Target
Possible remedy
Probable cause
Incandescent lamp defective _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Replace lamp (para 20).
23. Target Set Frame Does Not Seat Properly on Tribrach
Possible remedy
Probable cause
Tribrach assembly defective _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Replace tribrach assembly (para 27).
Section IV. TARGET SET CARRYING CASE
the spring lock (7), and the lock assembly
24. General
(3).
The carrying case provides a convenient
means for carrying the target set in the field,
(1) Removal. Refer to figure 6 and remove
and serves as a dustproof and moistureproof
a defective handle, spring lock, or lock
container for the set when it is in storage. This
assembly.
section contains maintenance functions which
(2) Installation. Refer to figure 6 and
organizational maintenance personnel must
install a serviceable handle, spring
perform on the carrying case.
lock, or lock assembly.
25. Carrying Case
b. Replace. Replace a carrying case damaged
a. Repair. The only components of the case
beyond repair with a serviceable case.
that can be replaced are the handle (9, fig. 6)
1
Screw
5
Nut
9
Handle
2
Screw
6
Case
10
Washer
3
Lock assembly
7
Spring lock
11
Screw
4
Washer
8
Screw
12
Nut
Figure 6. Target set carrying case, removal and installation.
AGO 10139A
