DOWNLOAD Sony ICF-S10MK2 (serv.man2) Service Manual ↓ Size: 579.39 KB | Pages: 19 in PDF or view online for FREE

Model
ICF-S10MK2 (serv.man2)
Pages
19
Size
579.39 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-s10mk2-sm2.pdf
Date

Sony ICF-S10MK2 (serv.man2) Service Manual ▷ View online

6
ICF-S10MK2
SECTION  4
ELECTRICAL  ADJUSTMENTS
0 dB=1 
µ
V
[AM]
Setting:
BAND switch : AM
[FM]
Setting:
BAND switch : FM
• Repeat the procedures in each adjustment several times for a
maximum reading on level meter, and the frequency coverage
and tracking adjustment should be finally done by the trimmer
capacitors.
Adjustment Location:
AM RF signal 
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to 
the set.
+
level meter
set
16 
jack (J1)
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
+
level meter
v
 jack (J1)
set
16 
0.01 
µ
F
TP (FM ANT)
– MAIN BOARD (Component Side) –
CT1
}
AM Tracking
L1
Adjustment
T1
AM IF
Adjustment
L3
}
FM Tracking
CT2
Adjustment
CT4
}
AM Frequency Coverage
L4
Adjustment
L2
}
FM Frequency Coverage
CT3
Adjustment
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
520 kHz
CT4
1,650 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
620 kHz
CT1
1,400 kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L2
86.5 MHz
CT3
109.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
87.5 MHz
CT2
108 MHz
ICF-S10MK2
7
7
SECTION  5
DIAGRAMS
5-1.
BLOCK  DIAGRAM
13
10
15
18
11
6
8
FM
FRONT-END
FM
IF AMP
AF
POWER AMP
AM IF AMP,
AGC, DET
AM
FRONT-END
17
20
FM
RF IN
FM/AM
IF OUT
CF2
10.7MHz
CF1
455kHz
CF3
10.7MHz
FM
RF
FM IF IN
3
FM
DISCRIMINATOR
TUNING METER
FM DISCRI
28
AF
OUT
SP1
AF
IN
24
25
DET
OUT
AM IF IN
METER
16
FM/AM
BAND
SELECT
REG OUT
VOL
5
AM OSC
L4
AM OSC
L3
FM RF
L2
FM OSC
L1
AM FERRITE-ROD
ANTENNA
FM OSC
AM
RF IN
FM/AM FRONT-END,
FM/AM IF AMP, DET, AGC, AF AMP
IC1
CT1
+
+
CT4, L4
AM FREQUENCY
COVERAGE
CT3, L2
FM FREQUENCY
COVERAGE
CT1, L1
AM TRACKING
CT2, L3
FM TRACKING
T1
AM IF
• SIGNAL PATH
: FM
: AM
9
J1
B+ (1.25V)
D1
TUNE
RV1-1
VOL
CV1
TUNING
AM
FM
SW1
BAND
CT2
CT3
CV1-3
CV1-3
CT4
CV1-4
VCC 27
v
ANT1
CV1-2
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R6)
2PCS. 3V
RV1-2
OFF
CV1
TUNING
ICF-S10MK2
8
8
R8
R1
C8
C5
R6
C7
C18
MAIN BOARD  
C1
C6
C10
C9
C12
C23
C21
C4
+
+
C11
R7
R3
R4
R2
C14
C13
C3
C2
L2
R5
C15
+
C24
+
C20
C22
+
C19
+
+
C17
+
C16
+
CF1
T1
SW1
BAND
SW1
FM
AM
L4
R10
VOL
RV1 (1/2)
OFF
RV1 (2/2)
CF2
CF3
TUNE
D1
L3
L5
DRY BATTERY
SIZE "AA"  
(IEC DESIGNATION R6)
2PCS. 3V
SP1
+
J1
v
(11)
11
1-662-703-
CT4
CV1-4
CV1-3
CV1-2
CV1-1
CT1
CT3
CT2
TUNING
CV1
ANT1
L1
AM FERRITE-ROD ANTENNA
IC1
A
B
C
D
E
F
1
2
3
4
5
6
7
1
30
15
16
TP
(FM ANT)
Note on Printed Wiring Board:
X
: parts extracted from the component side.
W
: indicates side identified with part number.
f
: internal component.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
5-2.
NOTE  FOR  PRINTED  WIRING  BOARD  AND  SCHEMATIC  DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
f
: internal component.
C
: panel designation.
A
: B+ Line.
H
: adjustment for repair.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground in
no-signal (detuned) conditions.
no mark : FM
(
) : AM
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: FM
f
: AM
5-3.
PRINTED  WIRING  BOARD
• IC Block Diagram
IC1
CXA1019S
1
2
3
4
5
6
7
8
9
10
15
14
13
12
11
FM
DISCRIMINATOR
AF POWER AMP
AM FE
FM IF
TUNING
METER
AM IF DET AGC
FM FE
23
22
21
20
24
25
19
18 17 16
29 28 27 26
30
GND
GND
AF OUT
VCC
RIPPLE
FIL
TER
AF IN
DET OUT
AFC AGC
AFC AGC
IF GND
METER
N.C
FM IF IN
AM IF IN
FM/AM BAND
SELECT
FM/AM
IF OUT
FE GND
N.C
AM RF IN
FM RF
REG OUT
FM OSC
FM RF IN
AFC
AM OSC
VOL
NF
FM DISCRI
GND
GND
ICF-S10MK2
9
9
5-4.
SCHEMATIC  DIAGRAM
 See page 8 for IC Block Diagram.
J1
SP1
C23
C21
R10
C20
R7
C19
C24
C18
C17
C16
C15
T1
R6
R2
R3
C11
C12
C8
C5
C4
C3
C2
L5
C1
C14
C10
R8
C9
C7
C6
CT1
SW1
R4
C22
CT2
CT3
CT4
ANT1
CV1-1
CV1-2
CV1-4
L2
L3
CV1-3
L4
CF3
TP
C13
R5
IC1
CF1
CF2
R1
RV1-1
RV1-2
D1
0.1
0.1
6.8k
470
6.3V
1k
0.47
50V
220
10V
0.022
10
50V
4.7
50V
10
50V
330
150
1k
1
50V
0.01
1p
0.022
10
50V
33p
33p
33p
100p
8.2p
3.3k
27p
18p
3.9p
6.8k
10 50V
10.7MHz
(FM ANT)
0.01
2.2k
CXA1019S
455KHz
10.7MHz
100k
50K
SLP-181B-51
TUNE
OFF
VOL
BAND
AM
FM
FM/AM
BAND
SELECT
AM
IF IN
FM
IF IN
NC
METER
AFC
AGC
IF
GND
AFC
AGC
DET OUT
AF IN
RIPPLE
FILTER
VCC
AF
OUT
GND
GND
FM RF
FM OSC
AM OSC
L1
AM
FERRITE-ROD
ANTENNA
FM/AM
RF IN
FM
NC
RF IN
AM
REG OUT
FM OSC
AFC
AM OSC
VOL
NF
DISCRI
FM
GND
GND
IF OUT
FE
GND
FM RF
DRY BATTERY
SIZE"AA"
2PCS. 3V
(IEC DESIGNATION R6)
FM/AM FRONT-END,
FM/AM IF AMP,
DET,AGC,AF AMP
CV1
TUNING
Page of 19
Display

Click on the first or last page to see other ICF-S10MK2 (serv.man2) service manuals if exist.