Read Sony ICF-M410S Service Manual online
7
7
ICF-M410S
4-1. BLOCK DIAGRAM
: FM
B.P.F
D2
Q10
1
3
BPF1
Q1
SW RF AMP
Q4
MW RF AMP
Q2
Q5
Q6
Q7
Q3
INVERTER
Q8
BUFFER
Q9
BUFFER
L4 SW RF
ANT102
(FERRITE-ROD)
13
10
8
FM RF IN
FM RF
FM OSC
AM RF IN
L9 SW OSC
L11 MW OSC
6
AM OSC
11
L17
L18
FM RF
L14 FM OSC
9
REG
VT
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
CT2
CT1
CT3
Q11
20
METER
24
25
DET
AF IN
Q13
AF OUT
27
B +
VOL
5
Q14
NF
RV1
IC1
FM/AM FRONT-END,IF,DET,AF AMP
ANT101
(TELESCOPIC)
BAND(MW/SW)
BAND(FM/AM)
MAIN BOARD
IC2
3.0V REG
VOUT VIN
1
IC3
3.0V REG
VOUT VIN
1
2
+3V-2
+3V-2
+3V-2
Q15,Q16
+
+
JACK BOARD
DCJ301
EPJ301
SP301
DC IN 4.5V
EARPHONE )
( SPEAKER )
28
2
VT
VDET
VCOL
VCOH
VDD
GND
BAND(FM/AM)
BAND(MW/SW)
MUTE
BEEP
B +
POWER
BAND(FM/AM)
BAND(MW/SW)
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
KEY BOARD
VT
EO
VDD
VOUT
VDD
VOUT
4
BAT301
(+13V)
(
MW FREQUENCY
COVERAGE
SW
TRACKING
SW FREQUENCY
COVERAGE
FM
TRACKING
MW
TRACKING
VOL
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
AM IF
OFF
ON
R
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