TM5-1260-206-34
DAC Troubleshooting Procedures - Continued
Table 3-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If bad, replace faulty connector, or chassis mounted
If good, replace card A.
Step 4.
Check that malfunction is corrected.
If not, refer faulty DAC to depot maintenance personnel.
6.
SONALERT DOES NOT SOUND WHEN DIC PUSHBUTTONS OR FOOTSWITCH ARE PRESSED
Remove DAC top and bottom cover plates.
Step 1.
Check continuity between pins A55 and G52. Check for proper
If bad, replace faulty wire or resistor.
Remove card G.
Step 2.
If sonalert sounds, replace card G.
(See
If sonalert does not sound, replace card A.
Step 3.
Check that malfunction is corrected.
If not, refer faulty DAC to depot maintenance personnel.
To prevent damage to electronic components, always reenergize
unit before removing or inserting printed circuit cards.
7.
CALCULATOR PRINT-OUT AND DIGITAL DISPLAY READ-OUT DISAGREE
Remove DAC top and bottom cover plates. Using an
Step 1.
3-6