Electrical Adjustments - Sony CFD-E10 Service Manual

TUNER SECTION
AM Section
Function switch : AM
MEGA BASS : OFF
AM RF signal generator
3% amplitude modulation by 400Hz signal.
Output level : as low as possible
FM Section
Function switch : FM
MEGA BASS : OFF
FM RF signal generator
75kHz frequency deviation (100%) by 1kHz signal.
Output level : as low as possible
Connection:
set
Adjustment Locations:
[TU BOARD]
FM RF
CV1 (1/4) TRIMMER
FM TRACKING
ADJUSTMENT
FM OSC
CV1(2/4)TRIMMER
FM FREQUENCY COVERAGE
ADJUSTMENT
SECTION 3

ELECTRICAL ADJUSTMENTS

Put the lead-wire antenna
close to the set.
0.01 µ F
telescopic
antenna
level meter
32 Ω
J301 ( i jack)
CV1(4/4)TRIMMER
AM FREQUENCY
COVERAGE
ADJUSTMENT
AM RF
CV1(3/4) TRIMMER
AM TRACKING ADJUSTMENT
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
no mark : Other models
< > : US, Tourist models
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CV1 (4/4) trimmer
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CV1 (3/4) trimmer
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CV1 (2/4) trimmer
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CV1 (1/4) trimmer
AM OSC
FM TRACKING
ADJUSTMENT
L1
L4
Ver 1.1 2002.09
518 ± 5kHz
1680 ± 30kHz <1780 ± 30kHz>
620kHz
1400kHz
87 ± 0.5kHz <85.5 ± 0.5MHz>
107.8 ± 0.5MHz <109.5 ± 0.5MHz>
87MHz <86.5MHz>
107.8MHz <109.5MHz>
FM FREQUENCY COVERAGE
ADJUSTMENT
L2
IC1
L3
AM TRACKING ADJUSTMENT
CFD-E10
9