Electrical Adjustments; Tuner Section - Sony D-F200 Service Manual
Fm/am portable cd player
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Also See for D-F200:
- Operating instructions manual (24 pages) ,
- Specification sheet (2 pages)
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TUNER SECTION
0 dB = 1 µV
• FM Section
Setting:
RADIO ON•BAND/MEMORY button : FM
STEP switch
FM RF signal
generator
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
• AM Section
Setting:
RADIO ON•BAND/MEMORY button : AM
STEP switch
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
• Connecting Level Meter (FM and AM)
set
i jack (J302)
• Connecting Digital Voltmeter (FM and AM)
100 k Ω
TP81 (VT)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
• For FM adjustment, fix the FM RF coil (L1) as shown next page
and then perform tracking adjustment at L2 and CT1.
Lastly check the voltage value.
• For AM adjustment, fix the ferrite-rod antenna (L3) as shown
next page and then perform tracking adjustment at L4 and CT3.
Lastly check the voltage value.
SECTION 4
ELECTRICAL ADJUSTMENTS
: 10k
TP3 (RF-IN)
0.01 µ F
set
: 10k
Put the lead-wire
antenna close to
the set.
level meter
(range: 0.5–5 V ac)
16 Ω
digital
voltmeter
FM FREQUENCY COVERAGE
CHECK
Frequency Display
Reading on Digital voltmeter
Adjustment Part
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
87.5 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
450 kHz
AM FREQUENCY COVERAGE
CHECK (US, CND, E, AUS model)
Frequency Display
Reading on Digital voltmeter
Adjustment Part
AM FREQUENCY COVERAGE
CHECK (AEP, UK, CH model)
Frequency Display
Reading on Digital voltmeter
Adjustment Part
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
620 kHz (621 kHz)
• Abbreviation
CND : Canadian model
AUS : Australian model
CH : Chinese model
Adjustment Location: See page 8.
D-F200/F201
87.5 MHz
108 MHz
+ 4.0 V
3.0 ± 1.4 V
7.8
– 2.5 V
<confirmation> <confirmation>
CT1
108 MHz
T1
530 kHz
1,710 kHz
+ 0.7 V
+ 0.8 V
0.9
5.0
– 0.5 V
– 0.7 V
<confirmation> <confirmation>
531 kHz
1,602 kHz
+ 1.5 V
1.0 ± 0.5 V
4.4
– 0.3 V
<confirmation> <confirmation>
CT3
1,400 kHz (1,404 kHz)
(
): AEP, UK, CH model
7
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