MAINTENANCE OF CONVERTER, IF (A20)-cont.

TM 32-5865-069-24&P

b. Replace Y1 as follows:

(1) Remove and retain the three screws and washers securing the top-plate

to the threaded spacers.

(2) Carefully separate the plates to access the underside of Y1.

(3) Disconnect the coaxial cable.

(4) Label and unsolder the wires connector to the terminals of Y1.

(5) Remove and retain the hardware securing Y1 to the top plate.

(6) Position the replacement on the plate and secure using the hardware

retained in step b.(5).

NOTE

Use insulated sleeving (0.125 ID HTSK CLR) on these connections.

(7) Solder the connecting wires to the terminals of the replacement.

(8) Connect the coaxial cable and torque connector to 8 inch-pounds.

(9) Secure the top-plate to the threaded spacers using the hardware

retained in step b.(1).

(10) Test the assembly using AN/USM-410 to verify repair.

Replace bottom plate mounted components (AT1, U1, FL1) as follows:

(1) Remove and retain the three screws and washers securing the top plate

to the threaded spacers.

(2) Carefully separate the plates to the extent of the service loop in

the wiring.

(3) Disconnect the two coaxial cables connected to the faulty component.

NOTE

Omit these steps when replacing

Steps (4) and (7) apply to AT1 only.

U1 or FL1.

(4) Label and unsolder the wires connected to the terminals of AT1.

(5) Remove and retain the hardware securing the faulty component to the

bottom plate.

(6) Position the replacement on the plate and secure using the hardware

retained in step c.(5).

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