81
XR-MR7
Step
No.
Adjustment
Title
FM SG (1kHz,
±
75kHz dev.)
Reception
Frequency
Display
Adjustment
Location
Specifications
Frequency
(MHz)
Level
(dB
µ
V)
1
Front End
Sensitivity
106
0 to 30
106MHz
L6104
L6105
L6102
T6101
Adjust so that the DC voltage between the
IC6201 - pin 20 and GND becomes at maximum
level.
2
Stereo Distortion
98
(ON STEREO)
80
98MHz
T6101
Minimize the distortion with 1/8 rotation of the
core.
3
TUNED IND.
Lighting Level
98
18
±
2
98MHz
VR6201
Adjust so that the indicator of TUNED IND.
starts to light up.
Step
No.
Adjustment
Title
AM SG (400Hz, 30% Mod.)
Reception
Frequency
Display
Adjustment
Location
Specifications
Frequency
(kHz)
Level
(dB
µ
V/m)
1
Front End
Sensitivity
999 (
∗
1)
35 to 45
999kHz (
∗
1)
T6201
Adjust so that the DC voltage between the
IC6201 - pin 20 and GND becomes at maximum
level.
6. ADJUSTMENT
6.1 TUNER SECTION
6.1.1 For MY Type
FM Tuner Section
• Set the mode selector to FM BAND.
• Connect the wiring as shown in Fig. 1.
AM Tuner Section
• Set the mode selector to AM BAND.
• Connect the wiring as shown in Fig. 1.
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.
Note (
∗
1) : For the area using 10kHz step, frequency should be 1000kHz.
FM SG
PRODUCT
DC
Voltmeter
FM75
Ω
antenna terminal
AM antenna terminal
60cm
Center
Center
Loop antenna
Fig.1 AM and FM Adjustment Wiring Diagram
FM/AM TUNER MODULE
AXX7042
L6101
L6102
L6103
L6104
L6105
T6101
T6201
VR6201
AM
antenna
terminal
FM
antenna
terminal
YELLOW BLACK
Fig.2 Adjustment Point
IC6201
Pin 20
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