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Page Title:
Table 5-1. Troubleshooting Procedures - continued |
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 TM 5-6350-264-14&P-12
NAVELEX EE 181-AA-OMI-120/E121 C-7359-60-1
TO 31S9-2FSS9-1-12
Table 5-1. Troubleshooting Procedures - Continued
Corrective action
Probable cause
Trouble
(2) To replace Data Receiver, remove
1. (cont)
h. (cont)
screws that secure cover and
remove cover from new Receiver.
Position code plug from old
Receiver over socket X1 on PC
board A1. Turn code plug so
that painted dot or notched
comer on plug lines up with
dot on PC board. Carefully
push plug into socket. Replace
cover and secure Plug Receiver
into status monitor module.
Tighten captive screws to
secure Receiver to status moni-
tor module. Replace status
monitor module in swingout
rack and secure with screws.
Turn on switch S1 on power
supply. Wait one or two min-
utes for system to stabilize;
then push RESYNC button
in CU.
j. If all FSK indications are correct and
LFI is still lighted, press RESET
switch. If LFI does not go out,
press RESYNC switch in CU.
k. If LFI does not go out, turn off
switch S1 on Monitor Cabinet
power supply. Remove screws that
secure status monitor module to
rack. Remove module through
front of rack. Remove Receiver
from status monitor module.
Set multimeter to ohms and
connect leads to terminals on
RESET switch (S1). Press RESET
switch. Meter should indicate
less than one ohm.
1. Release RESET switch. Meter should
indicate 400 to 100,000 ohms.
m. If either of these indications is not
correct, replace Data Receiver.
5-21
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