TM 5-6350-264-14&P-10
NAVELEX EE 181-AA-OMI-110/E121 C-9412
T.O. 31S9-2FSS9-1-10
Table 5-2. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
1.
(Cont)
a.
(Cont)
volts and connect negative lead to
chassis (ground). Connect positive
lead to power supply, TB2-3. Meter
should indicate 20+1 vdc. Connect
positive lead to TB2-5. Meter should
indicate 5 +0.25 vdc. Connect lead
to TB2-2. Meter should indicate
28 +2 vdc. Turn mode switch to
SECURE and then TEST/RESET.
f.
Turn off switch S1 on top of power sup-
ply. Remove PC boards Al through A6.
Place thumb or finger under board ejector
and lift up until board pops out of recep-
tacle at back of status processor. Then
grasp PC board and pull straight out.
g.
Inspect wires for loose or broken connec-
tions at TB8-F through TB13-E, TB2-4,
and P1/J12.
h.
Set multimeter to ohms and check for
continuity (0 ohms) by connecting meter
leads to the following points:
J1-4 to TB8-F-1
J1-4 to TB8-F-2
via P1/J12-3
J1-4 to TB8-F-3
J1-12 to TB8-F-1
J1-12 to TB8-F-2
via P1/J12-4
J1-12 to TB8-F-3
J2-4 to TB9-A-1
J2-4 to TB9-A-2
via P1/J12-5
J2-4 to TB9-A-3
J2-12 to TB9-A-1
J2-12 to TB9-A-2
via P1/J12-7
J2-12 to TB9-A-3
J3-4 to TB10-B-1
J3-4 to TB10-B-2
via P1/J12-8
J3-4 to TB10-B-3
J3-12 to TB10-B-1
J3-12 to TB10-B-2
via P1/J12-9
J3-12 to TB10-B-3
J4-4 to TB11-C-1
J4-4 to TB11-C-2
via P1/J12-10
J4-4 to TB11-C-3
}
}
}}
}}
}
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