TM 5-6675-326-14
Table 6-6. Direct/General Support Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
AUTO-SCALER LED DISPLAY DOES NOT OPERATE OR SHOW INCORRECT COUNT.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
Step 9.
Step 10
Step 11
Check to see if power source has 10 vdc to 15 vdc output.
Change power source.
Check to see if voltage on regulator on main logic PC board is 8 vdc.
Replace main logic PC board.
Check to see if there is power at power source but not on main logic PC board.
Replace main logic PC board and front display PC board.
Check to see if auto-scaler LED display shows numbers but does not count.
Replace main logic PC board and front display PC board.
Check to see if auto-scaler LED display shows count only increasing or only decreasing.
Replace main logic PC board and front display PC board.
Check to see if auto-scaler LED display shows erratic counts or skips counts.
Replace main logic PC board and front display PC board.
Check to see if auto-scaler LED display does not show even or odd digits.
Replace main logic PC board.
Check to see if auto-scaler LED display shows inaccurate counts.
Replace main logic PC board.
Check to see if calculator LED shows incorrect readings.
Replace main logic PC board.
Check to see if calculator LED display will clear.
Replace main logic PC board.
Check to see if auto-scaler NORMAL/SCALE switch and scale dials are operating correctly.
Replace scaler PC board.
Replace auto-scaler.
Change 1
6-146.1/(6-146.2 blank)
