TM 5-3895-385-23-1
0183
Table 1 Left Console Beacon Keypad Fault Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. If no continuity is present,
proceed to next test.
3. Measure for continuity (WP
1. If continuity is present, replace
0443, Vol 3) between
communication connector Y15
communication connector Y15
(WP 0386, Vol 2).
P1 Pin C and all other pins on
Y15 P1 (WP 0451, Vol 3, Figure
50).
2. If no continuity is present,
proceed to next malfunction.
21. Communication connector Y4
1. Measure for continuity (WP
1. If continuity is present, proceed
has an open circuit.
0443, Vol 3) between
to next test.
communication connector Y4 P1
Pin A and Y4 P2 Pin A (WP
0451, Vol 3, Figure 49).
2. If no continuity is present,
replace communication
connector Y4 (WP 0386, Vol 2).
2. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between
to next test.
communication connector Y4 P1
Pin A and Y4 P3 Pin A (WP
0451, Vol 3, Figure 49).
2. If no continuity is present,
replace communication
connector Y4 (WP 0386, Vol 2).
3. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between
to next test.
communication connector Y4 P1
Pin B and Y4 P2 Pin B (WP
0451, Vol 3, Figure 49).
2. If no continuity is present,
replace communication
connector Y4 (WP 0386, Vol 2).
4. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between
to next test.
communication connector Y4 P1
Pin B and Y4 P3 Pin B (WP
0451, Vol 3, Figure 49).
0183-13