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 communication cable is found
disconnected, reconnect
communication cable properly.
3. If no damage or loose
connection is found, proceed to
next malfunction.
7. Communication cable C11 has
1. Disconnect communication cable
an open circuit.
C11 J1 from Y15 P1 (WP 0451,
Vol 3, Figures 49 and 50).
2. Disconnect communication cable
C11 J2 from Y4 P2 (WP 0451,
Vol 3, Figures 49 and 50).
3. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) from C11 J1 pin A
to next test.
to C11 J2 pin A (WP 0451, Vol
3, Figures 49 and 50).
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 C11 J1 pin B
to next test.
to C11 J2 pin B (WP 0451, Vol
3, Figures 49 and 50).
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 C11 J1 pin C
to next malfunction.
to C11 J2 pin C (WP 0451, Vol
3, Figures 49 and 50).
2. If no continuity is present,
replace damaged
communication cable (WP 0386,
Vol 2).
8. Communication cable C11 has
1. Measure for continuity (WP
1. If continuity is present, replace
short circuit.
0443, Vol 3) from C11 J1 pin A
damaged communication cable
to every other pin on C11 J1
(WP 0386, Vol 2).
(WP 0451, Vol 3, Figure 50).
0183-5