Read Sony ICF-J1 Service Manual online
– 9 –
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L5
516.5 kHz
CT1-4
1,631.5 kHz
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
600 kHz
CT1-1
1,400 kHz
SW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L6
4.7 MHz
CT6
18.5 MHz
SW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
4.75 MHz
CT5
18 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L4
87.35 MHz
CT1-3
108.25 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
87.5 MHz
CT1-2
108 MHz
Adjustment Location: MAIN board (See page 10)
SECTION 4
ELECTRICAL ADJUSTMENTS
0 dB=1
µ
V
[MW]
Setting:
Band switch : MW
Band switch : MW
[SW]
Setting:
Band switch : SW
Band switch : SW
[FM]
Setting:
Band switch : FM
Band switch : FM
• 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.
• Remove FM/SW antenna in SW and FM adjustments.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
modulation by
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
8
Ω
TP9 (SP –)
TP8 (SP +)
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
modulation by
400 Hz signal
Output level: as low as possible
+
–
–
level meter
TP9 (SP –)
TP8 (SP +)
TP1
(ANT IN)
set
8
Ω
12 pF
FM RF signal
generator
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
+
–
–
level meter
TP9 (SP –)
TP8 (SP +)
TP1
(ANT IN)
set
8
Ω
0.01
µ
F
Click on the first or last page to see other ICF-J1 service manuals if exist.