Read Sony ICF-CD825RM Service Manual online
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SECTION 4
ELECTRICAL ADJUSTMENTS
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
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L4
530 kHz
CT4
1,605 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
600 kHz
CT3
1,400 kHz
PRECAUTION
• Adjustment should be performed in the order given.
[FM]
Setting:
Function switch: RADIO
BAND switch : FM
Function switch: RADIO
BAND switch : FM
[AM]
Setting:
Function switch: RADIO
BAND switch : AM
Function switch: RADIO
BAND switch : AM
TUNER SECTION
0 dB=1 µV
FM RF SSG
22.5 kHz frequency deviation
by 400 Hz signal.
Output level: as low as possible
by 400 Hz signal.
Output level: as low as possible
0.01
µ
F
FM lead wire antenna terminal
AM RF SSG
30% amplitude modulation by
400 Hz signal.
Output level: as low as possible
400 Hz signal.
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
level meter
set
speaker terminal
4
Ω
+
–
–
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
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