Xc-Is21Md - Pioneer XC-IS21 MD Servise Manual

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6.3 TUNER SECTION
6.3.1 FM TUNER SECTION
Set the mode selector to FM BAND.
Connect the wiring as shown in Fig. 6-2.
Adjustment
Step No.
Title
Front End
1
Sensitivity
Stereo Distortion
2
TUNED IND.
3
Lighting Level
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.
6.3.2 AM TUNER SECTION
Set the mode selector to AM BAND.
Connect the wiring as shown in Fig. 6-2.
Adjustment
Step No.
Title
TE
L 13942296513
Front End
1
Sensitivity
∗1: For the area using 10 kHz step, frequencies should be 1000 kHz.
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FM SG (1kHz, ±75kHz dev.) Reception
Frequency Level
(MHz) (dBµV)
106 0 – 30
98 80
(ON STEREO)
98 18 ± 2
AM SG (400Hz, 30% Mod.)
Frequency Level
(kHz) (dBµV/m)
1
999* 35 – 45
AM SG
Center
MPX SG FM SG
FM75Ω antenna terminal
Fig. 6-2 AM and FM Adjustment Wiring Diagram
FM/AM TUNER MODULE (AXQ7068)
AM
AXX7042
antenna
terminal
YELLOW BLACK
FM L6101
antenna
x ao u163
terminal
y
L6102
L6103
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2 9
8
Adjustment
Frequency
Location
Display
L6104
106 MHz
L6105
L6102
T6101
98 MHz
T6101
98 MHz
VR6201
Reception
Adjustment
Frequency
Location
Display
Q Q
3 6 7 1 3
1
999 kHz* T6201
60cm
Loop antenna
AM antenna terminal
Center
PRODUCT
L6105
T6101
L6104
.
Fig. 6-3 Adjustment Point

XC-IS21MD

9 4 2 8
Specifications
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.
Specifications
1 5 0 5 8 2 9 9 4
Adjust so that the DC voltage between the IC6201-
Pin 20 and GND becomes at maximum level.
DC
Voltmeter
T6201
m
VR6201
co
9 9
2 8 9 9
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