TM 5-3895-385-23-1
0192
Table 1. Right Screed Horn Keypad Fault Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. If communication cable is found
disconnected, reconnect
communication cable properly.
3. If no damage or loose
connection is found, proceed to
next malfunction.
5. Communication cable C9 has
1. Disconnect communication cable
an open circuit.
C9 J1 from Y6 P1 (WP 0451, Vol
3, Figure 51).
2. Disconnect communication cable
C9 J2 from Y7 P1 (WP 0451, Vol
3, Figure 51).
3. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) from C9 J1 pin A to
to next test.
C9 J2 pin A (WP 0451, Vol 3,
Figure 51).
2. If no continuity is present,
replace damaged
communication cable (WP 0386,
Vol 2).
4. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) from C9 J1 pin B to
to next test.
C9 J2 pin B (WP 0451, Vol 3,
Figure 51).
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 C9 J1 pin C to
to next malfunction.
C9 J2 pin C (WP 0451, Vol 3,
Figure 51).
2. If no continuity is present,
replace damaged
communication cable (WP 0386,
Vol 2).
6. Communication cable C9 has
1. Measure for continuity (WP
1. If no continuity is present,
short circuit.
0443, Vol 3) from C9 J1 pin A to
proceed to next test.
every other pin on C9 J1 (WP
0451, Vol 3, Figure 51).
0192-6
