Sony ICF-1000L Service Manual ▷ View online
– 5 –
2-3. AC IN BOARD, AMP BOARD
2-4. MAIN BOARD, KEY BOARD
4
Screw (+BTP 3x20)
Holder
AC IN board
1
Screws (+BTP 2.6x10)
5
Claws
6
3
2
7
CN602
AMP board
Cabinet (front)
5
Screws (+BTP 2.6x6)
3
Screws
(+BTP 3x10)
9
Screws (+BTP 3x10)
9
Screws (+BTP 3x10)
8
Remove solder
7
CN201
q;
Claw
q;
Claw
1
Knob (tone)
1
Knob (tuning)
q;
Claws
6
qa
4
2
Wind up thread,
and pull it up
Thread
Knob (band)
key board
Main board
Chassis
Cabinet (front)
– 6 –
3
4
2
A
1
Rack (pointer)
Gear, VOL
Pointer
Pointer
Rack (pointer)
Scribed
line
Chassis
Drum (A)
Drum (B)
2-5. SETTING THE POINTER
1 Turn the drum (B) in the direction of
A until it stopped.
2 Insert the rack (pointer) into the chassis groove.
3 Install the pointer
3 Install the pointer
.
4 Slid the pointer and align it with the groove on the scribed
"Gear , VOL" enga ges with
drum (A) like a figure.
drum (A) like a figure.
– 7 –
SECTION 3
ELECTRICAL ADJUSTMENTS
•
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520kHz
CT4
1,650kHz
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2-1
600kHz
CT1
1,400kHz
3-1. MW SECTION
BAND switch : MW
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
400Hz, 30%
AM modulation
Output level: as low as possible
AM modulation
Output level: as low as possible
16
Ω
set
v
jack (EPJ401)
level meter
•
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
3-2. LW SECTION
BAND switch : LW
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
400Hz, 30%
AM modulation
Output level: as low as possible
AM modulation
Output level: as low as possible
16
Ω
set
v
jack (EPJ401)
level meter
•
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
SW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
5.8MHz
CT5
18.5MHz
SW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
5.8MHz
CT3
18.5MHz
3-3. SW SECTION
BAND switch : SW
telescopic
antenna terminal
antenna terminal
12 pF
AM RF signal
generator
generator
400Hz, 30%
AM modulation
Output level: as low as possible
AM modulation
Output level: as low as possible
set
16
Ω
set
v
jack (EPJ401)
level meter
3-4. FM SECTION
BAND switch : FM
telescopic
antenna terminal
antenna terminal
0.01
µ
F
FM RF signal
generator
generator
400Hz, 30% FM modulation
frequency deviation
frequency deviation
±
22.5kHz
Output level: as low as possible
set
16
Ω
set
v
jack (EPJ401)
level meter
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
CT6
145kHz
< confirmation >
265kHz
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2-2
160kHz
CT2
240kHz
– 8 –
•
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
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.
L9
86.5MHz
CT8
109.5MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L7, L8
86.5MHz
CT7
109.5MHz
• Connecting Digital Voltmeter
– MAIN board (Conductor side) –
FM VT VOLTAGE ADJUSTMENT
Frequency Display
86.5MHz
Reading on Digital Voltmeter
Adjustment value : 1.0V
Standard value : 0.9 – 1.1V
Adjustment Part
RV204
SW
TRACKING
ADJUSTMENT
L2-2
LW
TRACKING
ADJUSTMENT
MW
FREQUENCY
COVERAGE
ADJUSTMENT
CT6
LW
FREQUENCY
COVERAGE
ADJUSTMENT
RV204
FM
VT VOLTAGE
ADJUSTMENT
FM
FREQUENCY
COVERAGE
ADJUSTMENT
T1
MW
IF
ADJUSTMENT
FM
TRACKING
ADJUSTMENT
– MAIN BOARD (Component side) –
SW
FREQUENCY
COVERAGE
ADJUSTMENT
L2-1
MW
TRACKING
ADJUSTMENT
CT1
MW
TRACKING
ADJUSTMENT
CT2
LW
TRACKING
ADJUSTMENT
TP2 (VT)
(conductor side)
L7, L8, CT7
L4, CT4
CT5, L5
L3
CT3
L9
CT8
Adjustment Location : Main board
R9
C207
IC204
4
5
1
3
3
R4
R214
R215
R3
C12
C13
C14
D202
C15
D2
R201
JC18
JC19
JC20
RV202
3 2
L8
L7
TP2
(VT)
FM1
JW9
JW10
JW11
JW12
JW
1
CT7
digital voltmeter
Main board
TP2 (VT)
TP2 (VT)
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