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LBI-38425A ALIGNMENT AND TROUBLESHOOTING PROCEDURES

5.1.7 Audio Output Level Adjustment Procedure

STEP

METERING

POINT

TUNING

CONTROL

METER

READING PROCEDURE

1 J701-1 RV601 See

Procedure

Set the signal generator to the

receiver frequency with ±3 kHz

deviation and 1 kHz modulation.

Set the RF signal level to 1000

microvolts. Move P551 from

J551-1, 2 to J551-2, 3 on the

Transmitter/Receiver Board.

Connect RF signal generator to J1.

Terminate J701-1, 6 with a 4 ohm,

6-watt resistor, connect the audio

level meter and the distortion

analyzer input across the resistor.

Set the volume to the maximum

point. Press DOWN button two

times. Adjust RV601 for 4-watt

output (4 Vrms, using the

distortion analyzer as voltmeter).

Return P551 to J551-1, 2.

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MLS MLSH041 Installationshandbuch Seite 16