Read Sony SRF-M95 Service Manual online
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10
SRF-M95
4-6. IC BLOCK DIAGRAMS
– MAIN Board –
IC101 TA7371AF-EL
IC201 TA2022AFN-EL
– SUB Board –
IC301 TA2123AF(EL)
GND
AFC
RF IN
AFC
MIX OUT
VCC
OSC
FM RF
1
2
3
4
5
6
7
8
RF
REG
MIX
OSC
VREF
OSC
VCC
GND
IF OUT
IF REQ
SP OUT
1
2
FM IF IN
MIX
3
4
5
AM IF IN
QUAD
AGC
6
7
8
9
10
11
12
ROUT
LOUT
ST IND
13
14
15
MPX IN
PILOT IN
DET OUT
PW SW
AM RF
20
21
22
23
24
LPF
LPF
18
19
LPF
VCO
16
17
STOP
PULSE
OSC
AGC
MIX
FM
IF
AF
AM
IF
AM
IF
FM DET
SWITCH
AM DET
DEVIDE
DECODE
PRE
VCO
0
90
FM
AM
AM
PILOT
ST
IND
ø
ø
+
–
+
–
AGC
DET
BST
PWC
PWB
–
+
PWA
+
–
+
–
+
–
+
–
TOMP
RIPPLE
FILTER
MIX
MTL DRV
VREF
PREA
PREB
BEEP
SW
36 35
34
33
32 31
30
29
28 27 26
25
24
22
21
20
19
18
17
16
15
14
13
23
12
11
10
9
8
7
6
5
3
2
1
4
48
47
46
45
44
43
42
41
40
39
38
37
AGC DET
AGC IN
BST NF
BST OUT
IN-C
LPF
EQ R
NF-R
IN-R
IN-L
PW NF-L
EQ-L
RF IN
PW GND
OUT L
OUT C
OUT R
VCC
BASE
RF OUT
GND
AMS
AMS
AMS
VREF IN
PRE GND
M/N SW
PRE SW
F/R SW
BST SW
PW SW
MT SW
AMS OUT
BEEP
MT TC
CAMP SW
AMS IN
NF
OUT
MTL
MTL
OUT
NF
IN
IN
REF OUT
IN
IN
4-5. IC PIN FUNCTION DESCRIPTION
• IC401
TC9329FA-104 (DIGITAL TUNING SYSTEM CONTROL)
Pin No.
1
2
3
4
5 to 16
17
18
19 to 20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42 to 45
46 to 49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
I/O
O
O
I
I
I
O
I
I
—
O
I
I
O
—
I
I
I
I
—
I
—
—
—
I
I
O
I
I
O
I
O
I
—
—
—
—
—
—
—
—
Pin Name
COM1
COM2
COM3
COM4
S1 to S12
SIMUKE1
SIMUKE2
P9-0 to P9-1
KS1
KS2
KR1
KR2
KR3
HOLD_SW
VDD
BEEP
—
—
DDCOM
—
TEST
INT2
INT1
IF IN2
GND
OSC IN
VDD
DD
V REG
P3-1 to P3-3
P5-0 to P5-3
MUTE
POWER_ON
BAND
AMP_ON
RESET
XOUT
XIN
GND
VDB
C1
C2
VEE
C3
C4
VLCD
Description
LCD common output
LCD segment output
Distination setting
Not used
Key source
Key return
HOLD SW input L : ON H : OFF
Power supply
BEEP output
Not used
Not used
DC-DC converter ON L : ON H : OFF
Not used
Test mode control input L : NORMAL H : TEST MODE
Battery removal detection L : No battery power mark lights.
1.0V battery detection L : No battery power mark lights.
IF input.
Ground terminal.
Programable counter input terminal.
Power supply.
Phase comparator output.
1.5 V constant voltage power supply output for phase comparator.
Not used
Not used
MUTE L : ON H : OFF
POWER ON L : ON H : OFF
BAND select L : AM H : FM
Audio amp SW L : OFF H : ON
0.9V voltage select L : Microcomputer reset
Terminal to which external crystal oscillator is connected (75kHz)
Terminal to which external crystal oscillator is connected (75kHz)
Ground terminal
Power voltage step-up terminal
Constant voltage power supply output for LCD drive.
Constant voltage power supply output for LCD drive.
1.5V constant voltage power supply output for LCD drive.
Constant voltage power supply output for LCD drive.
Constant voltage power supply output for LCD drive.
3.0V constant voltage power supply output for LCD drive.
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