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XR-A6800, XR-A4800
6. ADJUSTMENT
6.1 TUNER SECTION
FM Tuner Section
� Set the mode selector to FM BAND. � Connect the wiring as shown in Fig. 1. Step No. Adjustment Title FM SG (1kHz, ± 75kHz dev.) Frequency Level (MHz) (dBµV)
106 98 (ON STEREO) 98 0 to 30
Reception Frequency Display
106MHz
Adjustment Location
L6104 L6105 L6102 T6101 T6101 VR6201
Specifications
1
Front End Sensitivity Stereo Distortion TUNED IND. Lighting Level
Adjust so that the DC voltage between the IC6201 - pin 20 and GND becomes at maximum level. Minimize the distortion with 1/8 rotation of the core. Adjust so that the indicator of TUNED IND. starts to light up.
2 3
80 18 ± 2
98MHz 98MHz
Note: Before adjusting, make sure there is no gap between L6101 and L6102 as well as between L6103 and L6104. If there is a gap between them, bring them into contact with each other first, and then make adjustments.
AM Tuner Section
� Set the mode selector to AM BAND. � Connect the wiring as shown in Fig. 1. Step No. Adjustment Title
Front End Sensitivity
AM SG (400Hz, 30% Mod.) Frequency Level (kHz) (dBµV/m)
999 (�1) 35 to 45
Reception Frequency Display
999kHz (�1)
Adjustment Location
Specifications
Adjust so that the DC voltage between the IC6201 - pin 20 and GND becomes at maximum level.
1
T6201
Note (�1) : For the area using 10kHz step, frequency should be 1000kHz. 60cm Loop antenna
AM SG
Center
Center
AM antenna terminal DC Voltmeter
MPX SG
FM SG FM75� antenna terminal
PRODUCT
Fig.1 AM and FM Adjustment Wiring Diagram
FM/AM TUNER MODULE
AM antenna terminal T6201 AXX7042 YELLOW FM antenna terminal BLACK L6105 T6101 L6102 L6103 L6104
IC6201 Pin 20
VR6201
L6101
Fig.2 Adjustment Point
53
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