TM 5-6675-324-14
Table 5-5. TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8. CALCULATOR AND AUTO-SCALER DISPLAYS ARE ERRATIC.
Step 1.
Check to see if encoder cable is correctly inserted into auto-scaler
back panel.
(a) If encoder cable is correctly inserted, proceed to step 2.
(b) Insert encoder cable correctly.
Step 2.
Check to see if encoder mounting screws are loose or missing.
(a) If no screws are loose or missing, proceed to step 3.
(b) Notify direct/general support maintenance for tightening or
replacing screws.
Step 3.
Check to see if planimeter drive gears are slipping or jamming.
(a) If gears are operating correctly, proceed to step 4.
(b) Tighten or loosen setscrew on wheel axle to adjust drive
gears.
Step 4.
Check to see if compression spring is operating.
(a) If compression spring is operating properly, proceed to step
.
(b) Replace compression spring (paragraph 5-10.3).
Step 5.
Check to see if encoder measuring wheel is in contact with planimeter
disk.
Proceed to step 6.
Step 6.
Check for any obstruction under the planimeter disk.
(a) If there is no obstruction present, proceed to step 7.
(b) Remove obstruction, press encoder housing in place.
Step 7.
Check to see if there are enough paper disks in planimeter.
If necessary, add another disk to planimeter (paragraph 5-10.4).
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