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 continuity is present, replace
damaged communication cable
(WP 0386, Vol 2).
2. Measure for continuity (WP
1. If no continuity is present,
0443, Vol 3) from C9 J1 pin B to
proceed to next test.
every other pin on C9 J1 (WP
0451, Vol 3, Figure 51).
2. If continuity is present, replace
damaged communication cable
(WP 0386, Vol 2).
3. Measure for continuity (WP
1. If continuity is present, replace
0443, Vol 3) from C9 J1 pin C to
damaged communication cable
every other pin on C9 J1 (WP
(WP 0386, Vol 2).
0451, Vol 3, Figure 51).
2. If no continuity is present,
proceed to next malfunction.
7. Communication cable C1
Check communication cable C1 J1
1. If damage is found, replace
disconnected.
and J2 for proper connection and
communication cable C1 (WP
damage (WP 0451, Vol 3, Figure
0386, Vol 2).
51).
2. If communication cable is found
disconnected, reconnect
communication cable properly.
3. If no damage or loose
connection is found, proceed to
next malfunction.
8. Communication cable C1 has
1. Disconnect communication cable
an open circuit.
C1 J1 from Y7 P2 (WP 0451, Vol
3, Figure 51).
2. Disconnect communication cable
C1 J2 from Y10 P2 (WP 0451,
Vol 3, Figure 51).
3. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) from C1 J1 pin A to
to next test.
C1 J2 pin A (WP 0451, Vol 3,
Figure 51).
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