Adjustment - Pioneer XR-A100 Service Manual

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5. ADJUSTMENT

Note: Adjustment of MYXK, NVXK and YPWXJ types are the same as those of base model except for the following.
5.1 FM/AM TUNER MODULE (AXQ7077: MYXK and NVXK types only)
7 FM Tuner Section
÷ Set the mode selector to FM BAND.
÷ Connect the wiring as shown in Fig. 1.
Adjustment
Step No.
Title
Front End
1
Sensitivity
Stereo
2
Distortion
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.
7 AM Tuner Section
TE
L 13942296513
÷ Set the mode selector to AM BAND.
÷ Connect the wiring as shown in Fig. 1.
Adjustment
Step No.
Title
Front End
1
Sensitivity
*1: For the area using 10kHz step, frequencies should be 1000 kHz.
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FM SG (1kHz, ±75kHz dev.) Reception
Frequency Level
(MHz) (dBµV)
106 0 to 30
98
80
(ON STEREO)
98 18 ± 2
AM SG (400Hz, 30% Mod.)
Frequency Level
(kHz) (dBµV/m)
999 *
1 35 to 45
AM SG
Center
MPX SG FM SG
FM75Ω antenna terminal
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Fig. 1 y AM and FM Adjustment Wiring Diagram
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2 9
8
Adjustment
Frequency
Location
Display
L6104
L6105
106 MHz
L6102
T6101
98 MHz T6101
98 MHz VR6201
Q Q
3 6 7 1 3 1 5
Reception
Adjustment
Frequency
Location
Display
999kHz * 1
T6201
60cm
Loop antenna
AM antenna terminal
Center
PRODUCT
co
.
XR-A100, XR-A100-K
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.
0 5 8 2 9 9 4 2 8
Specifications
Adjust so that the DC voltage between the IC6201-
Pin 20 and GND becomes at maximum level.
DC
Voltmeter
m
9 9
9 9
27