Service Procedure - Marantz SR4021 Service Manual

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)
FM
100%(75kHz Dev.) (/U)
Alignment Points Alignment Points
Modulation Modulation frequency
30%
TUNER MODULE TUNER MODULE
KST-M9014MS1(0)-70 KST-M9014MS1(0)-70
400Hz
400Hz
29