TM 5-6675-316-14
Table 2-6. DIRECT/GENERAL SUPPORT TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6.
VARIOUS VOLTAGES FROM POWER SUPPLY INCORRECT. ALL OTHER VOLTAGES ARE
CORRECT - Cent
WARNING
High voltage capable of causing death may be stored in capacitor after
power is removed. Be sure capacitor is discharged and reduced to zero
volts.
Check 9 V dc output at capacitor C1.
Step 6.
If not present, replace capacitor C1.
7. UNWANTED CHARACTERS ARE APPEARING ON DISPLAY AND RANDOM COMMANDS ARE BEING
EXECUTED.
Check constant voltage transformer for continuity.
Replace transformer (paragraph 2-20.21).
NOTE
Adjust power supply voltages (paragraph 2-20.22) and perform diagnostic
test (paragraph 2-20.1).
8.
INPUT DISPLAY IS FUZZY AND SLIGHTLY OUT OF FOCUS.
Check adjustment of display unit.
Adjust display unit (paragraph 2-20.27).
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