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) from C3 J1 pin B to
to next test.
C3 J2 pin B (WP 0451, Vol 3,
Figure 49).
2. If no continuity is present,
replace damaged
communication cable (WP 0386,
Vol 2).
5. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) from C3 J1 pin C to
to next malfunction.
C3 J2 pin C (WP 0451, Vol 3,
Figure 49).
2. If no continuity is present,
replace damaged
communication cable (WP 0386,
Vol 2).
9. Communication cable C3 has
1. Measure for continuity (WP
1. If continuity is present, replace
short circuit.
0443, Vol 3) from C3 J1 pin A to
damaged communication cable
every other pin on C3 J1 (WP
(WP 0386, Vol 2).
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) from C3 J1 pin B to
damaged communication cable
every other pin on C3 J1 (WP
(WP 0386, Vol 2).
0451, Vol 3, Figure 49).
2. If no continuity is present,
proceed to next test.
3. Measure for continuity (WP
1. If continuity is present, replace
0443, Vol 3) from C3 J1 pin C to
damaged communication cable
every other pin on C3 J1 (WP
(WP 0386, Vol 2).
0451, Vol 3, Figure 49).
2. If no continuity is present,
proceed to next malfunction.
10. Main wiring harness has an
1. Measure for continuity (WP
1. If continuity is present, proceed
open circuit.
0443, Vol 3) between main
to next test.
wiring harness W1 J12 Pin A
and main wiring harness W1 J15
Pin A (WP 0451, Vol 3, Figure
7).
0187-8