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Sanyo FXD-680GD Service Manual page 8

Full panel detachable high power fm/am stereo receiver compact disc player
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Table of Contents
FM ADJUSTMENT
Equipment Required
AM IF/RF signal generator
Solid-state voltmeter (SSVM)
Regulated DC power supply
2-CH voltmeter
Distortion meter
FM Alignment Using FM Signal Generator
Note: Press the radio power switch to on the radio. Signal generator output must be kept as low as possible
to avoid overload and clipping.
Step
Generator
Coupling
Stereo
Signal
Separation
Generator
to antenna
receptacle
FM SNC
98.1 MHz
Adjustment
Dev. 75 kHz
L+R=90 %
Int. 1 kHz
60dBµV output
STOP
Signal Generator
SENS.
to antenna
receptacle
Note: The tuner module is well-adjust and adjustment is not recommended.
ALIGNMENT PROCEDURES
Generator
Display
Setting
98.1 MHz
Int. 1 kHz
98.1 MHz
Dev. 75 kHz
L+R = 90 %
pilot = 10 %
98.1 MHz
98.1 MHz
@ 40 dBµ
98.1 MHz
Mod. 1kHz
98.1 MHz
Dev 75kHz
7
Adjustment
Remarks
Adjust AF
VR1
output power
at maximum
separating
more than 30 dB
VR2
Stereo Separation
25 dB (±5 dB)
Adjust AF to
VR3
stop station.

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