Sony WM-FX822 Service Manual page 9

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3 7 63 1515 0
TUNER SECTION
FM SECTION
Setting:
FUNCTION switch
BAND switch
FM RF SSG
0.01µF
Modulation : 400 Hz, 22.5 kHz dev. (30%)
Output level : as low as possible.
FM IF ADJUSTMENT
Adjust for a maximum reading on VTVM.
L5
16
TE
L 13942296513
set
REMOTE jack
www
.
http://www.xiaoyu163.com
: RADIO
: FM
TP (ANT)
TP (GND)
76.00 MHz
VTVM
(AC : 0.5–5V range)
x ao
y
i
http://www.xiaoyu163.com
8
VCO ADJUSTMENT
FM RF SSG
Carrier frequency : 78.00 MHz
Modulation
Output level
[TUNER BOARD]
Adjustment
Element
RV1
Q Q
3 6 7 1 3
u163
.
— 9 —
2 9 9 4 2 8
0.01µF
TP (ANT)
TP (GND)
: no-modulation
: 55 dB (562 µV)
Frequency Frequency counter
Display Reading
78.00 MHz 19.00 kHz ± 0.05 kHz
1 5 0 5 8 2 9 9 4
150kΩ
IC3
TP
(VCO)
m
co
9 9
frequency
counter
2 8 9 9
+
–