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Page Title:
Table 5-1. Troubleshooting Procedures - Continued |
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 TM 5-6350-264-14&P-11
NAVELEX EE 181-AA-OMI-120/E121 C-7359-40-1
T.O. 31S9-2FSS9-1-11
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective Action
15. (Cont)
a.
(Cont)
located on back of Signal
module. Remove the
mounting screws and re-
move Signal Module.
(2)
To install new Signal Module,
position module in mount-
ing rack and install mount-
ing screws. Connect wires
to terminal board TB1.
Close and lock cabinet
door.
b.
Defective power
a.
Set multimeter to dc volts. Con-
supply.
nect meter leads to the fol-
lowing points in the power
supply. Meter should indi-
cate 20 vdc at each point.
Power
(+)
(-)
Supply
Lead
Lead
1 Zone
TB2-2
TB2-1
1 Zone
TB2-2
TB2-3
5 Zone
TB2-2
TB2-1
5 Zone
TB2-4
TB2-3
25 Zone
TB2-2
TB2-1
25 Zone
TB2-4
TB2-3
25 Zone
TB2-6
TB2-5
b.
If meter does not indicate 20 vdc
at each point, replace power
supply.
(1)
To remove one-zone Monitor
Cabinet power supply, un-
lock and open cabinet
door. Unlatch and swing
out mounting rack. Posi-
tion power switch S1 to
POWER OFF. Turn off ex-
ternal ac power by turning
off circuit breaker. Tag
and remove wires from ter-
minal board TB1, located
on back of Signal Module.
5-24
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