TM 11-6720-239-35
operation. Use the chart ( b below) as a guide in
isolating trouble.
a. General. Most of the finder assembly troubles
will be obvious and can be localized during normal
b. Finder Assembly Troubleshooting Chart.
Symptom
Probable
cause
Correction
Viewfinder image, superimposed image,
Replace broken component (para 3-9).
Broken optical component -------------
or albator image missing.
Line across image --------------------
Replace damaged component.
Cracked optical component ------------
Rangerfinder and movable mask in-
a. Broken cam lever ------------------
operative.
b. Broken cam spring -----------------
Rangefinder only inoperative . . . . . . . . .
. Broken cantilever, cantilever spring,
Replace broken component.
tunet, or tunet spring.
Mask assembly only inoperative -------- a. Sliding mask lever or spring broken--
3-9) .
b. Bent movable mask ----------------
b. Replace movable mask.
