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)
If an intrusion alarm is indicated on PC
board A2, TP1, for example, connect
jumper to terminal numbers 1 and 2 on
TB9-A. With jumper installed, meter
should indicate less than 0.5 vdc. With
jumper removed, meter should indicate
18.5 to 21 vdc. If these voltages are cor-
rect, there is a genuine alarm condition.
d.
If voltage indications at TP1 and TP2
are correct, troubleshoot interconnect-
ing wiring and associated sensor per steps
in TM5-6350-264-14/1, System Manual.
e.
If voltage indications at TP1 and TP2 are
not correct, replace faulty PC board in
status processor.
(1) To remove PC boards A1 through
A6, turn off switch S1 on top of
power supply. Place thumb or fin-
ger under board ejector and lift up
until board pops out of receptacle
at back of status processor. Then
grasp PC board and pull straight out.
NOTE
PC boards Al through A6
are identical and may be in-
stalled in any slot, 1 through
6.
(2) To install new PC boards Al through
A6, turn PC board so that plastic
board ejector is toward top. Align
board with guides at top and bot-
tom of status processor. Slide board
straight in until it contacts receptacle
at back of processor. Then press
firmly on board until it seats com-
pletely in receptacle. Turn on switch
S1 on top of power supply. Depress
TRANSMITTER RESYNC switch .
S2. Wait about 5 minutes for system
to stabilize. During 5-minute stabili-
zation period, set multimeter for dc
5-10
