ZS-X10 - Sony Audio Service Manual (repair manual). Page 13

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13
ZS-X10
SECTION  5
ELECTRICAL  ADJUSTMENTS
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
(  ): Singapore and Australian models
AM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
530 kHz (531 kHz)
1.0 
±
 0.05 V
Confirmation
1,710 kHz
5.3 
±
 0.7 V (4.8 
±
 0.7 V)
(1,611 kHz)
(  ): Singapore and Australian models
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
620 kHz (621 kHz)
CT3
1,400 kHz (1,404 kHz)
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2
10.7 MHz
FM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L2
108 MHz
3.0 
±
 0.2 V
Confirmation
87.5 MHz
1.3 
±
 0.3 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
87.5 MHz
CT1
108 MHz

Adjustment and Connecting Location: TU board
(See page 14)
TUNER  SECTION
0 dB=1 
µ
V
[AM]

Setting:
Function: RADIO
Band: AM
[FM]

Setting:
Function: RADIO
Band: FM
• Repeat the procedures in each adjustment several times, and
the  tracking adjustments should be finally done by the trimmer
capacitors.
• Remove FM antenna in FM adjustment.
AM RF signal 
generator
30% amplitude
modulation by
400 Hz signal
Output level: 
as low as possible
Put the lead-wire
antenna close to 
the set.
+
–
level meter
set
3.2 
Ω
AUDIO board
CN302 pin 
2
AUDIO board
CN302 pin 
1
FM RF signal
generator
75 kHz frequency
deviation by 1 kHz
signal
Output level: 
as low as possible
+
–
level meter
AUDIO board
CN302 pin 
2
AUDIO board
CN302 pin 
1
set
3.2 
Ω
0.01 
µ
F
TU board
TP (GND)
TU board
TP (ANT)
digital voltmeter
TP (VT)
TP (GND)
100 k
Ω
TU board
PRECAUTION
1. Setting
MEGA BASS : OFF
Ver. 1.1
Display
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