Quantcast Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-120045

 

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Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-120044
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TM-5-6350-264-14-P-12 Receiver Data R-1861/FSS-9(V) NSN
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Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-120046
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
Trouble
Probable cause
Corrective action
2. (cont)
d. (cont)
(2) To replace Data Transmitter, re-
move screws that secure cover
and remove cover from new
Transmitter. Position code
plug from old Transmitter over
socket X1 on PC board A2.
Turn code plug so that dot or
notched comer on plug lines
up with dot on PC board. Care-
fully push plug into socket.
Replace cover and secure with
four screws. Position Trans-
mitter over standoffs in CU
and insert screws. Tighten
screws to secure Transmitter.
Connect wires to TB6 and
TB7 in CU.
NOTE
e. Bad Data
Receiver.
To gain access to Data Receiver for
troubleshooting, open Monitor Cabi-
net, and turn off switch S1 on pow-
er supply. Release swingout rack.
Remove screws that secure status
monitor module to rack and remove
module through front of rack.
Loosen captive screws and remove
Data Receiver from bottom of
module. Remove screws that se-
cure covers. Remove captive screws
and remove Receiver cover. Plug
Data Receiver into status monitor
module and temporarily secure with
string or tape. Ensure that test
points on bottom edge of PC
boards are not covered. Replace
status monitor module in swingout
rack and secure with screws. Turn
on switch S1 on power supply.
Wait one or two minutes for sys-
tem to stabilize; then push RESET
button in CU.
a. If voltages are stable, check Data Re-
ceiver clock signal on PC board A2
for changes. Set oscilloscope as
follows:
5-28

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