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
4. (Cont)
d. (Cont)
out of receptacle at back of status
processor. Then grasp PC board
and pull straight out.
(2) To install new PC board A8, turn board
so plastic ejector is toward top.
Align board with guides at top and
bottom of status processor. Slide
board straight in until it contacts
receptacle at back of processor.
Then press firmly on board until it
seats completely in receptacle.
(3) Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes
for system to stabilize. Turn mode
switch to TEST/RESET and then
to SECURE.
e. Bad instan-
a.
Turn mode switch S3 to SECURE and en-
taneous alarm
sure that no alarms are activated. Set
circuitry or
multimeter to ohms and connect leads
bad mode
to TB6, terminals S1-I and S1-IR.
switch.
Meter should indicate less than 2,000
ohms.
b.
Disconnect and then reconnect wire on
TB8-F-1. Meter should indicate more
than 100,000 ohms and then return to
less than 2,000 ohms 10 ±2 seconds
after wire is reconnected.
c.
If meter does not indicate more than
100,000 ohms with wire disconnected
from TB8-F-1, replace PC board A9.
(1) To remove PC board A9, turn off
switch S1 on top of power supply.
Place thumb or finger 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.
(2) To install new PC board A9, turn board
so plastic ejector is toward top.
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