MLS MLSH041 Manuel d'installation télécharger pdf (Page 15)

ALIGNMENT AND TROUBLESHOOTING PROCEDURES

LBI-38438A 15

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

Volt Meter).

Return P551 to J551-1, 2.

Control Logic Troubleshooting

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MLS MLSH041 Manuel d'installation Page 15