Marantz SR4021 - Service Procedure; Tuner Alignment Instructions; Tuner Alignment Procedure; Tuner Alignment Points

29
10. SERVICE PROCEDURE
TUNER ALIGNMENT INSTRUCTIONS
TUNER ALIGNMENT INSTRUCTIONS
Necessary Equipments
Necessary Equipments
AM Signal Generator
FM Signal Generator
Oscilloscope
VTVM (AC,DC)
Test loop antenna (AM Adjustment)
Dummy antenna (FM Adjustment)
Distortion analyzer
Alignment Procedure
Alignment Procedure
1. Check the power-source voltage.
2. Set the function switch to the band to be aligned.
3. Keep the input signal as low as possible to adjust accurately.
4. Align the modulation and modulation frequency.
Item
Band
AM
100%(40kHz Dev.) (/A)
400Hz
FM
100%(75kHz Dev.) (/U)
400Hz
Alignment Points
Alignment Points
TUNER MODULE
TUNER MODULE
KST-M9014MS1(0)-70
KST-M9014MS1(0)-70
Modulation Modulation frequency
30%