Section III. GENERAL MAINTENANCE - TM-5-6350-264-14-P-20043

TM 5-6350-264-14&P-2

NAVELEX EE181-AA-OMI-030/E121 RT1161 M9443

T.O. 31S9-2FSS9-1-2

Table 5-1. Troubleshooting Procedures - Continued

Trouble

Probable cause

Corrective action

4. (cont)

c. (cont)

Ensure that black ground wire

is not caught under board. In-

sert screws through PC board

and tighten them to secure

board. Connect wires to TB1.

Connect transducer leads and

black ground lead to PC board.

Section III. GENERAL MAINTENANCE

5-4.

MAINTENANCE ACTION. The extent of direct

and replacement of PC boards in the Processor and

Transceiver and transducers in the Transceiver. On-site

and general support maintenance is governed by the

adjustment is made on the range control in the

Maintenance Allocation Chart (MAC), Appendix B. The

Transceiver. Inspection only is made on the chassis.

MAC provides for on-site test

Section IV. REMOVAL AND REPLACEMENT OF MAJOR COMPONENTS AND ASSEMBLIES

5-5.

REMOVAL

AND

INSTALLATION

PRO-

d. To install new PC board, shift PC board off

CEDURES.

center toward receive transducer (blue dot).

Align single screw hole in board with screw hole

in center of receive transducer mount. Ensure

a. To remove the Processor PC board, remove

that black ground lead is not caught under

cover, tag and disconnect wires from TB1 and

board. Insert screws through PC board, and

TB2. Remove screws and PC board.

tighten them to secure board. Connect wires to

TB1.

Connect transducer leads and black

b. To install new PC board, orient board so the

ground lead to PC board. Replace cover.

terminal strips are adjacent to the conduit

entrance holes. Secure the PC board to the

e. To remove transducer, remove Transceiver

chassis with screws. Connect wires to TB1 and

cover, tag and disconnect wires from TB1.

TB2. Replace cover.

Disconnect transducer leads from PC board.

Disconnect black ground lead from PC board.

c. To remove Transceiver PC board, remove

Remove screws that secure PC board. Remove

cover, tag and disconnect wires from TB1.

PC board. Remove and keep hardware that

Disconnect transducer leads from PC board.

secures chassis to mounting surface.

Disconnect black ground lead from PC board.

Remove screws that secure PC board. Remove

PC board.

5-27