Read Sony ICF-C773 / ICF-C773L Service Manual online
ICF-C773/C773L
9
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
530 kHz [531 kHz] 1,710 kHz [1,602 kHz]
Reading on Digital voltmeter
2.9
± 0.1 V
9.5
± 1.0V[9.4 ± 0.1V]
Adjustment Part
L3
<confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4-1
CT2
580 kHz [621kHz]
1.490 kHz [1.404kHz]
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
MW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
531 kHz
1.602 kHz
Reading on Digital voltmeter
2.75
± 0.1 V
9.4
± 1.0 V
Adjustment Part
L3
<confirmation>
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4-1
CT2
621 kHz
1.404 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
153 kHz
279 kHz
Reading on Digital voltmeter
2.4
± 0.3 V
9.0
± 0.1 V
Adjustment Part
<confirmation>
CT4
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4-2
CT3
162 kHz
243 kHz
• ICF-C773/C773L
FM FREQUENCY COVERAGE
CONFIRMATION
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
3.1
± 0.3 V
9.0
± 1.0 V
Adjustment Part
<confirmation>
<confirmation>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
87.5 MHz
108 MHz
SECTION 3
ELECTRICAL ADJUSTMENTS
< > : ICF-C773L
TUNER SECTION 0 dB = 1
µV
• FM Section
Setting:
BAND button:FM
Setting:
BAND button:FM
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
30% amplitude
modulation by
400 Hz signal
modulation by
400 Hz signal
• AM Section
Setting:
BAND button: AM <MW and LW>
Setting:
BAND button: AM <MW and LW>
TP1 (ANT)
FM RF signal
generator
generator
0.01
µ
F
set
22.5 kHz frequency
deviation by 400 Hz signal
output level : as low as possible
deviation by 400 Hz signal
output level : as low as possible
• Connecting Level Meter (FM, AM<MW and LW>)
32
Ω
SP+
SP–
level meter
(range 0.5-5V AC)
digital
voltmeter
voltmeter
100 k
Ω
TP8 (VT)
• Connecting Digital Voltmeter (FM, AM <MW and LW>)
• 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.
Adjustment and Connect Location: See page 10.
• ICF-C773
[ ] : 9kHz step
• ICF-C773L
Click on the first or last page to see other ICF-C773 / ICF-C773L service manuals if exist.