Sony HCD-EP50LIV Service Manual page 13

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TUNER SECTION
[AM]
Setting:
Function : TUNER
Band switch : AM
Put the lead-wire
AM RF signal
antenna close to
generator
the set.
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
[FM]
Setting:
Function : TUNER
Band switch : FM
FM RF signal
generator
0.01 µ F
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
TE
L 13942296513
MAIN board
TP (FM VT)
TP (AM VT)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
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0 dB=1 µV
level meter
32 Ω
+
set
–
MAIN board
SPEAKER terminal (CN17)
MAIN board
level meter
FM ANT
32 Ω
+
set
–
MAIN board
SPEAKER terminal (CN17)
digital voltmeter
100 k Ω
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Adjust for a maximum reading on level meter
T1
AM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
T8
Confirmation
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
T6
TC1
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L901
Confirmation
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L902
TC901
Adjustment Location: MAIN board (See page 14)
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HCD-EP50LIV
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AM IF ADJUSTMENT
450 kHz
1.3 ± 0.1 V
530 kHz
7.8 ± 0.5 V
1,710 kHz
603 kHz
1,404 kHz
2.4 ± 0.1 V
87.5 MHz
6.8 ± 0.5 V
108 MHz
90.1 MHz
106.1 MHz
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