Sony Walkman WM-FX141 Service Manual page 7

QQ
3 7 63 1515 0
TUNER SECTION
[AM]
BAND: AM
Signal generator
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
[FM]
BAND : FM
Signal generator
FM RF signal
generator
75kHz(100%) amplitude modulation
by 1kHz signal.
Output level: as low as possible
TE
L 13942296513
set
www
.
http://www.xiaoyu163.com
0 dB = 1 µV
Put the lead-wire
antenna close to
the set.
0.01 µ F
antenna terminal
level meter
16 Ω
J302 (phones)
x ao u163
y
i
http://www.xiaoyu163.com
2 9
8
• Repeat the procedures in each adjustment several times for the
maximum level meter indication.
• The frequency coverage and tracking adjustments should be
finally done by the trimmer capacitors.
Adjust for a maximum reading on level meter.
T1
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT4
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT2
Q Q
3 6 7 1 3 1 5
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
Adjustment Location: Main board (See page 8)
co
.
— 7 —
9 4 2 8
AM IF ADJUSTMENT
455kHz
620kHz(800kHz)
1,400kHz(1,300kHz)
505kHz(516.5kHz)
1,750kHz(1,631.5kHz)
86.0MHz[64MHz]
109.5MHz
0 5 8 2 9 9 4 2 8
86.0MHz[64MHz]
109.5MHz
( ) :E, Mexican, East European, AEP
[ ] : East European
m
9 9
9 9