Tuner Section - Sony CFS-828SMK2 Service Manual

CFS-828SMK2

TUNER SECTION

0 dB = 1 µV
Common Setting:
SOUND SELECT control: FLAT
VOLUME control: MAX
MAXI BASS switch: OFF
• FM Section
BAND switch: FM
FM RF signal
generator
75kHz frequency deviation
by 1kHz signal
Output level: as low as possible
• MW Section
BAND switch: MW
FINE TUNING (RV2): mechanical center
AM RF signal
generator
400Hz, 30%
AM modulation
Output level: as low as possible
• SW1/SW2 Section
BAND switch: SW1 or SW2
FINE TUNING (RV2): mechanical center
AM RF signal
generator
400Hz, 30%
AM modulation
Output level: as low as possible
• Common Connecting Level Meter
set
PHONES jack (J301)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
10
telescopic
antenna terminal
0.01µF
set
Put the lead-wire
antenna close to
the set.
telescopic
antenna terminal
12pF
set
level meter
(range: 0.5–5 V ac)
32 Ω
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
L9
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT4
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
SW1 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
CT6
SW1 TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
< confirmation >
SW2 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L8
CT8
SW2 TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L7
< confirmation >
Adjustment Location: See page 11
10.7 MHz
86.5 MHz
109.5 MHz
86.5 MHz
109.5 MHz
455 kHz
520 kHz
1,680 kHz
600 kHz
1,400 kHz
2.2 MHz
7.3 MHz
2.2 MHz
7.3 MHz
6.8 MHz
22.5 MHz
6.8 MHz
22.5 MHz