NAVELEX EE 181-AA-OMI-110O/E121 C-9412
Table 5-2. Troubleshooting Procedures - Continued
and connect wires to TB3. Turn
power supply upright and position it
over standoffs on side of CU enclose-
ure. Note that cable clamp goes un-
der screw on bottom front of power
supply. Insert screws and tighten to
secure power supply. Connect wires
to TB1. Replace cover and secure
with screws. Connect wires to TB2
and TB4. Position battery outside
CU enclosure. Carefully insert bat-
tery end first; turn and lower it into
bottom of CU enclosure. Connect
wires to battery terminals. Switch
on main circuit breaker.
Turn on switch S1 on power supply.
Depress TRANSMITTER RESYNC
switch S2. Wait about 5 minutes for
system to stabilize. During 5-minute
stabilization period, check power
supply. Set multimeter to dc volts
and connect negative lead to chassis
(ground). Connect positive lead to
power supply, TB2-3. Meter should
indicate 20 +1 vdc. Connect positive
lead to TB2-5. Meter should indicate
5 0.25 vdc. Connect lead to TB2-2.
Meter should indicate 28 ± 2 vdc.
Turn mode switch to TEST/RESET
and then to SECURE.
If meter indication is correct, at J8-18
turn off switch S1 on power supply.
Set meter to ohms and connect leads
to TB2-2 and J8-18. Meter should
indicate 0 ohms.
If meter does not indicate 0 ohms, in-
spect wires from TB2-2 to J12/P1
pin 26 to J8-18 for broken or loose
connections. Resolder any bad con-
If meter indicates 28 +2 vdc, at J8-18 con-
nect positive meter lead to J8-16.
Meter should indicate 18.5 to 21 vdc.