Table 5-1. Troubleshooting Procedures - TM-5-6350-264-14-P-120023

TM 5-6350-264-14&P-12

NAVELEX EE 181-AA-OMI-120/E121 C-7359-60-1

TO 31S9-2FSS9-1-12

NOTE

Troubleshooting procedures listed in table 5-1 may require more than one person to

perform corrective action.

Covers should be removed as necessary to perform troubleshooting procedures.

Never disconnect a wire without first marking that wire to assure proper reconnection.

Table 5-1. Troubleshooting Procedures

Trouble

Probable cause

Corrective action

1. Constant alarm

a. Bad wiring between

or no alarm.

Data Transmitter

and CU.

During troubleshooting, ensure that

only correct test points are used. If

power is applied to wrong point, or if

wrong point is shorted to ground, the

equipment will be damaged.

a. Tag, remove and insulated Data Trans-

mitter wires from TB6 and TB7 in

Control Unit (CU).

b. Set multimeter to ohms and connect

leads to any two of these wires,

(except black and gray wires). Note

meter indication and reverse leads.

Meter should indicate 45,000 to

55,000 ohms in both directions.

Repeat these steps for all wires.

c. If any of these indications are not cor-

rect, replace Data Transmitter.

(1) To remove Data Transmitter,

remove screws that secure

Data Transmitter to standoffs

in CU. Be careful not to drop

Transmitter inside CU. Re-

move screws that secure cover

and remove cover. Remove

code plug from socket on PC

board A2.

5-6