Read Sony ICF-M410L Service Manual online
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
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