Sony ICF-M410L Service Manual ▷ View online
6
ICF-M410L
SECTION 4
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. p: pF.
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
no mark : FM
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
f
: AM (LW/MW)
The components identified by mark
0
or dotted line with mark
0
are critical for
safety.
• Waveform
2Vp-p
1
IC101
wf
(XOUT)
1.4V
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
7
7
ICF-M410L
4-1. BLOCK DIAGRAM
: FM
B.P.F
1
3
BPF1
Q2
BUFFER
13
10
8
FM RF IN
FM RF
FM OSC
AM RF IN
6
AM OSC
11
L6
L7
FM RF
L3 FM OSC
9
REG
VT
15
18
17
IF OUT
3
FM
DISCRI
7
AFC
CF2
CF3
CF1
CF4
10.7MHz
450kHz
450kHz IFT
T1
FM IF IN
AM IF IN
2
16
BAND
CT3
Q5
20
METER
24
25
DET
AF IN
Q7
28
AF OUT
27
B +
VOL
5
Q4
NF
RV1
IC1
FM/AM FRONT-END,IF,DET,AF AMP
ANT101
(TELESCOPIC)
Q1
Q3
ANT102
(FERRITE-R0D)
CT1
CT2
CT4
L4 MW OSC
BAND(MW/LW)
BAND(FM/AM)
+
SP301
( SPEAKER )
IC2
3.0V REG
VOUT VIN
1
2
Q8,Q9
VT
VDET
VCOL
VCOH
GND
BAND(FM/AM)
BAND(MW/L
W)
MUTE
BEEP
B +
POWER
BAND(FM/AM)
BAND(MW/LW)
MUTE
BEEP
POWER
CN1
W101
CN2
W102
VDD 23
4
5
5
2
3
3
52
Q101
AMP
20
21
VCOL
VCOH
DC/DC
CONVERTER
TUNING
CONTROL
Q153,Q154,T101
Q151,Q152
19
IC102 +3.2V
VOLTAGE DET.
IC103 +2.5V
VOLTAGE DET.
1
1
2
2
53
50
BATT LOW
CE
35
49
9
6
15
1
34
31
16
19
13
10
LCD0
LCD14
COM0
COM3
KEY SCAN0
KEY SCAN3
KEY RET0
KEY RET3
51 INT
VDD
VDD
S115
HOLD
24
25
XOUT
XIN
X101
75kHz
IC101
DIGITAL TUNING SYSTEM CONTROL
S101-S114
KEY
MATRIX
LCD101
Signal Path
VT
VDD
EO
+
VOUT
VDD
VOUT
VDD
4
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
(+13V)
FM
TRACKING
MW FREQUENCY
COVERAGE
LW FREQUENCY
COVERAGE
LW
TRACKING
MW
TRACKING
DCJ301
EPJ301
DC IN 4.5V
EARPHONE )
(
VOL
MAIN BOARD
JACK BOARD
KEY BOARD
AM IF
OFF
ON
R
8
8
ICF-M410L
4-2. SCHEMATIC DIAGRAM
IC B/D
IC-102 S-80732
IC-103 S-80825
• See page 6 for Wavefoms. • See page 10 for IC Pin Function Description.
• See page 10 for IC Block Diagrams.
• See page 10 for IC Block Diagrams.
Ver. 1.3
9
9
ICF-M410L
4-3. PRINTED WIRING BOARD
IC101
IC102
IC103
IC2
IC1
MIN
MAX
VOL
RV1
JW3
3
2
1
5
4
C32
1-681-635-
1
5
W1
JW1
JW2
C
E
B
K
K
E
B
1
1
7
7
CN1
CN2
JW5
JW4
C
E
B
E
B
K
K
JW6
CF1
C22
L5
C23
C27
C29
JW7
T1
15
16
1
30
JW8
CF4
C18
JW11
JW10
CT3
L6
L7
C16
BPF1
1
3
K
JW12
CT2
L4
K
E
B
C
ANT101
FM
TELESCOPIC
ANTENNA
MAIN BOARD
11
(11)
12
(12)
JW9
CF2
CF3
ANT102
MW/LW
FERRITE-ROD ANTENNA
C
C
RED
NTL
GRN
BLK
1
4
8
5
CT1
CT4
C
E
B
C
E
B
JACK BOARD
SP301
EPJ301
DCJ301
DC IN 4.5V
C302
JW301
W301
5
1
1-681-636-
K
K
K
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
11
(11)
12
(12)
TP22
(RFGND)
(RFGND)
TP19
(VT)
(VT)
TP11
(MW/LW)
(MW/LW)
TP13
(BEP)
(BEP)
TP12
(MUTE)
(MUTE)
TP10
(FM/AM)
(FM/AM)
TP9
(POWER)
TP20
(MET)
TP8
(+B)
TP21
(+B)
TP1
(GND)
TP18
(VCOH)
TP2
(DET)
TP6
(GND)
TP7
(SP+)
TP5
(GND)
TP4
(VDD)
TP15
(VDET)
TP3
(+B)
(+B)
TP16
(3V)
(3V)
TP17
(RFGND)
(RFGND)
TP14
(VCOL)
(VCOL)
S102
POWER
S115
HOLD
S106
S105
S104
S108
S103
SLEEP
S111
PRESET
TUNING
1
S112
PRESET
TUNING
3
S110
PRESET
TUNING
2
S113
PRESET
TUNING
5
S114
PRESET
TUNING
4
S107
STANDBY
S101
CLOCK
S109
BAND
SELECT/ PRESET
TP112
(VCOH)
TP107
(VCOL)
TP109
(GND)
(GND)
TP113
(RFGND)
TP114
(VT)
TP110
(3V)
TP108
(VDET)
TP101
(+B)
TP111
(GND)
(GND)
TP106
(BEEP)
TP116
(13V)
TP115
(ED)
TP102
(PO
WER)
TP103
(MUTING)
TP104
(MW/SW)
TP105
(FM/AM)
LCD101
1
5
10
15
19
1
14 15
28
29
42
43
56
JW122
JW111
JW112
JW113
JW114
JW115
JW116
JW103
JW119
JW18
JW117
JW110
JW109
JW108
JW102
JW101
JW107
JW106
JW105
JW104
JW120
X101
T101
C123
C156
C153
W101
W102
1-681-634-
11
(11)
KEY BOARD
C119
R140
R137
R101
R140
R137
R101
C122
C118
R136
R134
R141
R133
R132
R139
R131
R130
R129
R128
C117
R127
R126
R125
R124
R123
R122
R121
R120
R119
R118
R117
R116
R138
C116
C114
C113
C111
C112
C110
C115
R115
C109
R108
R105
R151
C158
C152
C131
R152 C151
R142
C132
C121
Q151
Q152
E
E
Q101
E
R147
C135
R148
C136
R146
JW121
R142
R149
C137
CJ101
C159
CJ102
CJ107
1
1
C134
C133
R144
R143
C120
C121
1 2
3
4
1 2
3
4
Q154
E
Q153
E
R154
R158
C157
C157
R157
D102
D101
C155
R155
R156
C154
L101
K
K
R112
R111
C108
C104
C105
R109
C107
C104
C102
R106
C101
R110
JC106
JC105
R107
C103
R152
R104
R102
R103
R103
JC103
ON
OFF
t
1
2
A
B
C
D
E
F
G
H
3
4
5
6
7
8
9
10
11
Ref. No.
Location
D101
D-4
D102
D-4
IC101
B-2
IC102
B-4
IC103
B-3
Q101
B-3
Q151
B-3
Q152
B-3
Q153
C-4
Q154
D-4
• Semiconductor
Location
KEY BOARD
KEY BOARD
Ref. No.
Location
D1
G-1
D2
G-3
D3
F-4
D4
G-4
D5
G-6
D6
F-7
D7
G-7
D8
G-6
IC1
G-5
IC2
G-7
Q1
F-3
Q2
G-5
Q3
F-3
Q4
H-2
Q5
F-6
Q7
G-6
Q8
G-7
Q9
F7
• Semiconductor
Location
MAIN BOARD
MAIN BOARD
Ver. 1.2
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