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Troubleshooting Procedures - Continued | Up
TM-5-6350-264-14P-10 Alarm Set Control Manual | Next
Troubleshooting Procedures - Continued |
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
2. (Cont)
e. (Cont)
indicate 5 ± 0.25 vdc. Connect lead to
TB2-2. Meter should indicate 28 + 2
vdc. Turn mode switch to TEST/RE-
SET and then to SECURE.
c.
Set meter to dc volts and connect positive
meter lead to J10-P and negative meter
lead to chassis.
d.
If meter indicates 28 ± 2 vdc, replace A10.
e.
If meter indicates 0 v at J10-P, turn off
switch S1 on power supply. Remove
PC board A8.
To remove PC board A8, turn off
switch S1 on top of power sup-
ply. 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.
f.
Set multimeter to ohms and connect leads to
J8-17 and J10-P.
g.
If meter indicates 0 ohms, replace A8.
h.
If meter indicates more than 100, 000 ohms,
replace status processor interconnecting
wiring subassembly.
(1)
To remove status processor, turn off
switch S1 on power supply. Tag
and disconnect Data Transmitter
wires from TB6 and TB7. Remove
screws that secure Transmitter to
standoffs in CU. Be careful not to
drop Transmitter inside CU. Re-
move Data Transmitter. Loosen
screws that secure plug P1 to bot-
tom of status processor. Pull plug
P1 straight down to disconnect it.
Remove screws that secure status
processor to top of CU enclosure
and it will drop straight down.
5-48
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