Sony Walkman WM-FX373, Руководство по обслуживанию

Страница: 8 / 22

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FM SECTION
Setting:
FM/AM/TAPE (RADIO OFF) switch: FM
Repeat the procedure in each adjustment several times since L (3,
2) affects CT1 (3, 2) and CT1 (3, 2) affects L (3, 2). Both the
frequency coverage and tracking adjustments should end with the
final adjustment of the trimmer capacitors.
FM Frequency Coverage Adjustment
(( )): Italian, Saudi Arabia model, [ ]: East European model
FM Tracking Adjustment
(( )): Italian, Saudi Arabia model, [ ]: East European model
0 dB=1
µ
V TUNER SECTION
FM RF Signal
generator
0.01
µ
F
  
MAIN board
(FM RF-IN)
(GND)
75 kHz frequency
deviation by 1 kHz signal
Output level: as low possible.
Pointer SG Adjustment Reading on
position frequency part level meter
86 MHz
f minimum ((87.35 MHz)) L3
[64 MHz]
maximum
109.5 MHz
f maximum ((108.25 MHz)) CT1-3
[109.5 MHz]
SG and set Adjustment Reading on
frequency part level meter
86 MHz
((87.35 MHz)) L2
[64 MHz]
maximum
109.5 MHz
((108.25 MHz)) CT1-2
[109.5 MHz]
AM SECTION
Setting:
FM/AM/TAPE (RADIO OFF) switch: AM
Repeat the procedure in each adjustment several times since L (4,
1) affects CT1 (4, 1) and CT1 (4, 1) affects L (4, 1). Both the
frequency coverage and tracking adjustments should end with the
final adjustment of the trimmer capacitors.
AM IF Adjustment
AM Frequency Coverage Adjustment
( ): AEP, E model, (( )): Italian, Saudi Arabia model,
[ ]: East European model
AM Tracking Adjustment
(( )): Italian, Saudi Arabia model,
[ ]: East European model
AM RF Signal
generator
Put the lead-wire
antenna close to
the set.
30% amplitude modulation by
400 Hz signal
Output level: as low possible.
SG and set Adjustment Reading on
frequency part level meter
1,000 kHz T1 maximum
Pointer SG Adjustment Reading on
position frequency part level meter
505 kHz
f minimum
(505 kHz)
L4
((516.5 kHz))
[505 kHz]
maximum
1,750 kHz
f maximum
(1,680 kHz)
CT1-4
((1,631.5 kHz))
[1,680 kHz]
SG and set Adjustment Reading on
frequency part level meter
620 kHz
((800 kHz)) L1
[620 kHz] maximum
1,400 kHz
((1,300 kHz)) CT1-1
[1,400 kHz]
i
jack
FX373 (Canadian): 32
Ω
others: 16
Ω
set
+
level meter
–
i
jack
FX373 (Canadian): 32
Ω
others: 16
Ω
set
+
level meter
–