Sony ICF-CD820 - Cd/am/fm Stereo Clock Radio, Руководство по обслуживанию

Страница: 9 / 33

– 9 –
SECTION 4
ELECTRICAL ADJUSTMENTS
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1 455 kHz
AM (MW) FREQUENCY COVERAGE ADJUSTMENT
(Except CD820L: FR)
Adjust for a maximum reading on level meter
L4 530 kHz [526.5 kHz]
CT4 1,605 kHz [1,606.5 kHz]
AM (MW) TRACKING ADJUSTMENT
(Except CD820L: FR)
Adjust for a maximum reading on level meter
L1 (CD820)
600 kHz [598.5 kHz]
L1-1 (CD820L: AEP, UK)
CT3 1,400 kHz [1,399.5 kHz]
LW FREQUENCY COVERAGE ADJUSTMENT
(CD820L: FR)
Adjust for a maximum reading on level meter
L4 160 kHz
CT4 240 kHz
LW TRACKING ADJUSTMENT
(CD820L: FR)
Adjust for a maximum reading on level meter
L1-1 160 kHz
CT3 240 kHz
LW FREQUENCY COVERAGE ADJUSTMENT
(CD820L: AEP, UK)
Adjust for a maximum reading on level meter
CT6 145 kHz
LW TRACKING ADJUSTMENT
(CD820L:AEP, UK)
Adjust for a maximum reading on level meter
L1-2 160 kHz
CT5 240 kHz
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L3 87.5 MHz
CT2 108.0 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2 87.5 MHz
CT1 108.0 MHz
PRECAUTION
• Adjustment should be performed in the order given.
[FM]
Setting:
Function switch: RADIO
BAND switch : FM
[AM (MW) /LW]
Setting:
Function switch: RADIO
BAND switch : MW/LW
AM RF SSG
30% amplitude modulation by
400 Hz signal.
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
FM RF SSG
22.5 kHz frequency deviation
by 400 Hz signal.
Output level: as low as possible
0.01
µ
F
FM lead wire antenna terminal
level meter
set
speaker terminal
4
Ω
+
–
TUNER SECTION
0 dB=1 µV
NOTE:
[ ] : Italian model
• Abbreviation
FR : French model