Sanyo FXD-MP690R Service Manual page 8

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.