TM 5-3895-385-23-1
0187
Table 1. Left Screed Horn Keypad Fault Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between
to next test.
communication connector Y14
P1 Pin B and Y14 P3 Pin B (WP
0451, Vol 3, Figure 49).
2. If no continuity is present,
replace communication
connector Y14 (WP 0386, Vol 2).
5. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between
to next test.
communication connector Y14
P1 Pin C and Y14 P2 Pin C (WP
0451, Vol 3, Figure 49).
2. If no continuity is present,
replace communication
connector Y14 (WP 0386, Vol 2).
6. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between
to next test.
communication connector Y14
P1 Pin C and Y14 P3 Pin C (WP
0451, Vol 3, Figure 49).
2. If no continuity is present,
replace communication
connector Y14 (WP 0386, Vol 2).
25. Communication connector Y14
1. Measure for continuity (WP
1. If continuity is present, replace
has a short circuit.
0443, Vol 3) between
communication connector Y14
communication connector Y14
(WP 0386, Vol 2).
P1 Pin A and all other pins on
Y14 P1 (WP 0451, Vol 3, Figure
49).
2. If no continuity is present,
proceed to next test.
2. Measure for continuity (WP
1. If continuity is present, replace
0443, Vol 3) between
communication connector Y14
communication connector Y14
(WP 0386, Vol 2).
P1 Pin B and all other pins on
Y14 P1 (WP 0451, Vol 3, Figure
49).
2. If no continuity is present,
proceed to next test.
0187-18