Sony ZS-SN10 Servicehandleiding - Pagina 10
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ZS-SN10
Ver. 1.1
TUNER SECTION
[AM]
Setting:
Function: RADIO
RADIO/BAND, AUTO PRESET button: AM
Put the lead-wire
AM RF signal
antenna close to
generator
the set.
set
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
[FM]
Setting:
Function: RADIO
RADIO/BAND, AUTO PRESET button: FM
TUNER board
FM RF signal
TP (ANT)
generator
0.01 µ F
75 kHz frequency
deviation by 1 kHz
TUNER board
signal
TP (GND)
Output level:
as low as possible
TUNER board
TP (VT)
TP (GND)
• 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.
10
SECTION 4
ELECTRICAL ADJUSTMENTS
0 dB=1 µV
level meter
32 Ω
+
–
i jack (J301)
level meter
32 Ω
+
set
–
i jack (J301)
digital voltmeter
100 k Ω
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
( ): Singapore, Korean, Thai and Australian models
AM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
L4
530 kHz (531 kHz)
1,710 kHz
Confirmation
(1,611 kHz)
( ): Singapore, Korean, Thai and Australian models
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
CT3
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
L2
108 MHz
Confirmation
87.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
CT1
Adjustment and Connecting Location: TUNER board
450 kHz
Reading on Digital Voltmeter
1.0 ± 0.05 V
5.3 ± 0.7 V (5.2 ± 0.6 V)
620 kHz (621 kHz)
1,400 kHz (1,404 kHz)
10.7 MHz
Reading on Digital Voltmeter
3.0 ± 0.2 V
1.3 ± 0.3 V
87.5 MHz
108 MHz
(See page 11)