REMOVING AND REPLACING CHASSIS COMPONENTS

TM 11-5805-387-34-2

VARIABLE RESISTORS

R1 AUDIO GAIN

R2 BFO

R3 SCOPE INTENSITY

R9 SQUELCH SENS

REMOVE

Tag, unsolder and remove leads from resistor.

Remove control knob retainer screws.

Remove resistor.

REPLACE

Put new resistor in place.

Replace control knob retainer screws.

Solder leads to new resistor.

METER M1

CAUTION

Do not press on meter glass.

REMOVE

Tag and unsolder wire leads to meter terminals.

Remove four front panel screws.

Remove meter.

REPLACE

Install new meter.

Replace four front panel screws.

Solder wires to meter.

3-9. REMOVING AND REPLACING CHASSIS COMPONENTS

To gain access to chassis components, remove modem from chassis (para 2-8).

Stand modem on end for simultaneous access to top and bottom of chassis.

FILTERS FL1, FL2, FL3, FL4, FL5

REMOVE

On the bottom side of the chassis remove four hex nuts holding filter to chassis.

Tag, unsolder and remove leads from terminals.

Lift out filter.

REPLACE

Place new filter into position.

Tighten four hex nuts.

Solder leads to filter terminals.

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