Sony SRF-M95 Service Manual ▷ View online
8
8
SRF-M95
4-4. SCHEMATIC DIAGRAM –SUB SECTION–
• See page 10 for IC Block Diagrams.
IC B/D
ON
OFF
4
5
1
2
3
Note on Schematic Diagram:
• All capacitors are in
• 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
Ω
and
1
/
4
W or less unless otherwise specified.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 1.5 V and fed with regulated dc power supply from
battery terminal.
• Voltages and waveforms are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
<
no mark : FM
<
> : AM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
•
•
Signal path.
F
: FM
f
: AM
• Abbreviation
FR
: French model.
Ver 1.1 2002. 02
9
9
SRF-M95
4-5. PRINTED WIRING BOARDS –SUB SECTION–
SUB BOARD
(SIDE B)
SUB BOARD
(SIDE A)
J301
1-679-615-
11
(11)
1-679-615-
11
(11)
RV301
VOL
S303
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC 1.5V
13
12
1
1
18
48
37
36
25
24
A
TO
MAIN BOARD
BATT1
HOLD
OFF
LOCAL
DX
ON
OFF
S302
MODE
S304
FM
S305
MEGA
BASS
S301
JOG
HOLD
L304
R308
R309
R317
R316
D301
R310
R311
R314
R315
R306
R307
L307
L306
L305
R312
R313
L302
L303
L301
C314
R305
R304
R303
C306
C305
C304
C325
C324
C323
C308
C309
C302
C301
C311
C310
C312
C315
R318
C303
C320
C321
Q303
C318
E
E
1
2
A
B
C
D
E
F
G
H
3
4
5
6
7
8
9
10
11
IC 301
Ref. No. Location
D301
H-3
D302
B-8
D303
B-9
D304
B-8
D305
B-9
IC301
C-8
Q301
B-8
Q302
D-7
Q303
E-4
• Semiconductor
Location
Note on Printed Wiring Board:
• Y
: parts extracted from the conductor side.
•
b
: Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B)
Pattern face side: Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• Indication of transistor
Q
C
These are omitted
E
B
10
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.
SECTION 5
EXPLODED VIEWS
NOTE:
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences from the original one.
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
•
The mechanical parts with no reference number
in the exploded views are not supplied.
in the exploded views are not supplied.
11
SRF-M95
•
Abbreviation
JE
JE
: Tourist model.
PA
: Panama model.
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
1
2
3
4
5
6
LCD1
L201
7
7
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
22
23
24
25
26
1
X-3379-921-1 CABINET (FRONT) ASSY
2
3-224-322-01 BUTTON (POWER)
* 3
3-224-332-01 CASE (LCD)
4
3-224-328-01 HOLDER (LCD)
5
3-224-329-01 HOLDER (BAR ANT)
* 6
A-3683-252-A MAIN BOARD,COMPLETE (JE)
* 6
A-3683-254-A MAIN BOARD,COMPLETE (EXCEPT JE,PA)
* 6
A-3683-255-A MAIN BOARD,COMPLETE (PA)
7
3-384-797-01 SCREW
8
3-224-330-01 COVER (JACK)
9
3-224-336-01 TERMINAL (-), BATTERY
10
3-224-335-01 TERMINAL (+), BATTERY
11
1-679-616-11 CONNECTION FLEXIBLE BOARD
* 12
A-3683-251-A SUB BOARD,COMPLETE (EXCEPT FR)
* 12
A-3683-256-A SUB BOARD,COMPLETE (FR)
13
3-224-320-01 LID, BATTERY CASE
* 14
3-224-338-01 CUSHION (BATTERY CASE LID)
15
3-224-323-01 BUTTON (MODE)
16
3-224-324-01 KNOB (HOLD)
17
3-224-325-01 KNOB (MEGA BASS)
18
3-224-326-01 KNOB (DX-LOCAL)
* 19
3-224-333-01 PLATE (DX/LOCAL)
20
3-225-719-01 SCREW (M2X3)
21
3-224-319-11 CABINET (REAR) (EXCEPT JE)
21
3-224-319-21 CABINET (REAR) (JE)
22
3-036-917-01 SCREW, TAPPING (1.4X10)
23
3-224-334-01 CLIP
24
3-224-337-01 SHEET (BATT)
25
3-229-133-01 SHEET
26
X-3381-979-1 CABINET (REAR) ASSY, (B) (EXCEPT JE)
26
X-3381-980-1 CABINET (REAR) ASSY, (B) (JE)
L201
1-419-843-11 COIL, FERRITE-ROD ANTENNA
LCD1
1-804-201-11 DISPLAY PANEL, LIQUID CRYSTAL
Ver 1.2 2002. 05
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