DOWNLOAD Sony SRF-M80 Service Manual ↓ Size: 2.19 MB | Pages: 17 in PDF or view online for FREE

Model
SRF-M80
Pages
17
Size
2.19 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
srf-m80.pdf
Date

Sony SRF-M80 Service Manual ▷ View online

SRF-M80
9
9
4-2.
NOTE  FOR  PRINTED  WIRING  BOARD  AND  SCHEMATIC  DIAGRAMS
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
Note on Printed Wiring Boards:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
W
: indicates side identified with part number.
z
: Through hole.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Note on Schematic Diagram:
• 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 
 and 
1
/
4
 
W or less unless otherwise
specified.
C
: panel designation.
A
: B+ Line.
H
: adjustment for repair.
• Power voltage is dc 3 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
(
) : AM
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
• Waveforms
1
IC101 
wf
 (XOUT)
2
Q104 Base-1, Collector-2
1.5 Vp-p
13.3 
µ
s
340 mVp-p
252 ns
3
Q104 Collector-1
2.9 Vp-p
252 ns
4-3.
IC  PIN  FUNCTION  DESCRIPTION
• 
KEY BOARD  IC101  
µ
PD17073GB-556-1A7 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
POWER
O
Power on/off control signal output for the radio system power supply    “H”: power on
2, 3
NC
O
Not used
4
M/BASS
O
MEGA BASS on/off control signal output    “H”: MEGA BASS on
5
MUTE
O
Muting on/off control signal output to the headphone amplifier    “L”: muting on
6 to 9
KS0 to KS3
O
Key scan signal output for the key matrix
10 to 13
KR0 to KR3
I
Key return signal input for the key matrix
14
NC
O
Not used
15
AMP
O
FM VCO amplifier power on/off control signal output terminal    “L”: FM VCO amplifier on
16
BAND
O
FM/AM band selection signal output terminal    “L”: AM, “H”: FM
17
NC
O
Not used
18
GND
Ground terminal
19
EO
O
PLL error signal output terminal
20
VCOL
I
AM VCO input terminal
21
VCOH
I
FM VCO input terminal
22
VREG0
Power supply terminal (connected to the coupling capacitor)
23
VDD
Power supply terminal (+3V)
24
XOUT
O
System clock output terminal (75 kHz)
25
XIN
I
System clock input terminal (75 kHz)
26
VREG1
Power supply terminal (connected to the coupling capacitor)
27
VLCD0
28
CAP0
29
CAPS1
30
VLCD1
31 to 34
COM0 to COM3
O
Common drive signal output to the liquid crystal display
35 to 49
LCD0 to LCD14
O
Segment drive signal output to the liquid crystal display
50
CE
I
Power failure detection signal input from the voltage detect    Normally: “H”
51
HOLD
I
Key input terminal
52
BEEP
O
Beep sound drive signal output terminal
53
BATT LOW
I
Battery voltage detection signal input from the voltage detect    Normally: “H”
54
NC
O
Not used
55, 56
PB1, PB2
I
Initialize signal input for the destination select
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
SRF-M80
10
10
MAIN BOARD
(COMPONENT SIDE)
(11)
11
1-683-951-
BLK
RED
NATURAL
L1
AM
FERRITE-ROD
ANTENNA
C25
R17
C27
R18
C23
C21
C22
C26
R19
C31
C30
C32
R20
C33
R39
Q5
BC
E
EC
B
Q1
Q6
R26
C42
C64
R14
R10
C18
C9
C66
R2
D3
K
A
R7
C12
R13
A
K
D5
C10
R11
C16
C17
L5
C19
C20
R43
R42
R27
R15
R28
R29
R37
R41
R40
C47
C45
L7
L6
L8
C56
C57
R36
C48
R32
R30
C50
R33
R34
C54
C55
C1
C40
R4
R1
R21
R22
C37
C36
R23
R24
C38
C65
C2
C39
R25
C61
EC
B
Q4
R3
R5
C4
C60
C5
C3
A
K
A
D2
C68
IC2
IC3
IC1
R35
1
12
C28
+
C24
+
C29
+
C34
+
BPF1
+
C8
RV1
RV2
L3
FM RF
L2
AM OSC
CT1
+
C41
+
C51
+
C52
+
C53
+
C58
+
C46
+
C49
+
C15
+
C44
J1
MAIN BOARD
(CONDUCTOR SIDE)
(11)
11
1-683-951-
S1
DX t LOCAL
FM SENS
A
KEY BOARD
DRY BATTERY
SIXE “AAA”
(ICE DESIGNATION RO3)
2PCS. 3V
-1
-2
i
VOL
RV3
1
5
10
6
9
8
16
1
TP
(AM GND)
TP
(FM ST)
TP
(VT)
TP
(FM GND)
TP
(FM IN)
3
1
21
20
11
10
1
40
31
30
2E
2B
1C
2C
1B
1E
TP
(B+)
A
B
C
D
E
1
2
3
4
5
6
7
8
9
R38
4-4.
PRINTED  WIRING  BOARD  – MAIN Board –
• Semiconductor
Location
Ref. No.
Location
D2
E-8
D3
D-8
D5
D-8
IC1
C-8
IC2
D-7
IC3
B-6
Q1
C-7
Q4
E-7
Q5
D-6
Q6
B-7
(Page 11)
SRF-M80
11
11
C
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
4-5.
PRINTED  WIRING  BOARD  – KEY Board –
• Semiconductor
Location
Ref. No.
Location
D101
D-4
D102
E-6
D103
E-6
D104
D-4
D105
D-6
IC101
D-7
IC102
D-2
IC103
D-3
Q101
D-4
Q102
D-3
Q103
C-3
Q104
E-6
(Page 10)
SRF-M80
12
12
R4
C1
R1
BPF1
C8
R2
C21
C22
C23
C24
C25
C26
R17
C27
R18
R19
C29
C32
C34
C33
C42
C64
R21
C36
R23
R24
Q4
C61
C55
C54
R33
R34
R30
R32
C53
R29
R35
R36
C57
C56
C58
C49
R39
R38
R37
C45
C47
R41
R40
C48
R43
R42
R28
R27
L6
L7
L8
0.82mH
0.82mH
0.82mH
C15
R14
C19
C20
R15
R10
C9
C18
C2
C3
R5
C4
C60
R3
C5
C12
D3
R7
C68
R13
D5
R11
C16
C148
C151
C149
C101
C102
C103
C104
C105
C106
C107
C108
R139
R138
R135
R101
R102
R103
R104
R105
R106
R107
R108
R129
R130
R131
R132
Q104
C136
C131
T101
R128
C147
C130
D105
D102
R127
C133
R126
C146
C111
C141
R112
C109
Q102
R111
R109
R133
C112
C116
L101
R116
X101
D104
R113
C114
C115
C113
C135
C118
C117
C125
R117
R118
C120
C121
C122
R140
C140
C145
R121
C150
R119
R120
R141
R142
R143
R144
C138
C137
D2
L2
R26
C17
R25
L102
0.1
µ
H
S1
TP
L1
CT1
TP
TP
C65
C66
C10
L5
Q1
L3
IC1
R20
TP
C39
C40
C38
R22
C37
C41
IC2
Q5
IC3
J1
Q6
S104
S107
S106
S105
S114
S109
S112
S117
S115
S113
S110
S111
S108
S101
S102
S103
LCD101
IC101
Q103
Q101
D103
D101
IC103
IC102
C123
R124
R123
C128
C127
TP
TP
R134
C134
R110
R114
RV1
C28
C31
C30
C46
C44
C132
C129
R115
R145
RV2
C51
C52
C50
RV3
470k
47p
22
4.7
16V
1k
0.1
0.1
1
22 6.3V
470p
1
470
0.47
2.2k
1.5k
10
6.3V
0.1
100
4V
0.01
1000p
1000p
10k
1
100k
100k
DTC144TU-T106
1
0.22
0.22
22k
22k
100
1k
100
4V
33k
1k
1k
4700p
4700p
22
6.3V
220
4V
2.2k
10k
10
1
1
0
0
0.1
10k
10k
10k
10k
100
4V
22k
1p
22p
220
10
1
1000p
8p
0.047
1M
4700p
470p
10k
10p
1000p
HVU300A
100k
1000p
100k
HVU300A
3.3k
2p
1000p
0.1
1000p
470p
470p
470p
470p
470p
470p
470p
470p
47k
47k
47k
10k
10k
10k
10k
10k
10k
10k
10k
10
100k
100k
47k
XN6501
0.1
22p
1k
6800p
0.1
1SS355
1SS355
100k
0.1
10k
1000p
470p
1000p
10
0.01
2SC3931
470
10
1k
1
1000p
47k
75KHz
1SS355
220k
470
4V
470
4V
0.1
1
15p
33p
1
1M
1M
0.1
0.1
0.01
1k
0.01
1000p
100k
1000p
100k
33k
10k
10k
10k
10k
1000p
1000p
KV1610S
2.2
1000p
4.7k
(FM IN)
(FM GND)
(VT)
1000p
1000p
1000p
33nH
2SC3931
CXA1960
10k
(AM GND)
0.01
0.1
0.1
10k
1
3.3
25V
LA3550M
2SC4081
LA4533M
XN4608
-031-1A7
DTA114EUA-T106
XN6501
UDZ-TE-17
-15B
RB520S-30TE61
XC61CN2102NR
XC61CN1902NR
0.1
10k
10k
0.1
0.33
(FM ST)
(B+)
2.2k
0.01
100k
10k
100k
4.7
16V
0.01
0.01
100
4V
100
4V
10
6.3V
0.22
10k
10
4.7k
3.3
25V
33
6.3V
0.1
20k/20k
C
O
M
0
C
O
M
1
C
O
M
2
C
O
M
3
L
CD0
L
C
D1
LC
D
2
L
C
D3
L
C
D4
LC
D
5
L
CD6
LC
D7
L
C
D8
L
C
D9
LC
D
10
L
C
D11
LC
D12
L
C
D1
3
L
C
D1
4
COM0
COM1
COM2
COM3
LCD0
LCD1
LCD2
LCD3
LCD4
LCD5
LCD6
LCD7
L
CD
8
L
CD
9
LC
D
1
0
LC
D
11
LC
D
1
2
LC
D
13
LC
D
1
4
MPRM
V12M
MUTE
AAGC
DETO
MPX1
PLT2
PLT1
PLL1
PLL2
TVRO
REGV
FTLO
FMBF
AMLO
FACL
COMP
BAND
TUNE
FMIB
IFCT
NC
MREF
ARFI
FMIN
TVIN
GND
FMRD
OLAG
VCO
VCC
MPRG
LOUT
ROUT
DDCN
PLLI
STID
MCNT
GND
IN1
IN2
HP1
HP2
LPIN
LPGAIN
LPOUT
OUT1
OUT2
DETIN
DETOUT
REF
VCC
GND
O
U
T
1
G
N
D
O
U
T
2
V
C
C
M
U
T
E
S
W
P
O
W
E
R
S
W
IN
1
P
R
E
IN
2
R
E
F
G
N
D
POWER
NC
NC
M/BASS
MUTE
KS0
KS1
KS2
KS3
KR0
KR1
KR2
KR3
NC
AM
P
BAND1
NC
GND
EO
VCOL
VCOH
VREG0
VDD
XOUT
XIN
VREG1
VLCD0
CAPS1
CAP0
LCD7
LCD6
LCD5
LCD4
LCD3
LCD2
LCD1
LCD0
COM3
COM2
COM1
COM0
VLCD1
PB2
PB1
NC
BATT LOW
BEEP
HOLD
CE
LCD14
LCD13
LCD12
LCD11
LCD10
LCD9
LCD8
MUTE
GND
VDD
+B
BAND1
BEEP
POWER
M/BASS
VT
RF GND
VCOH
VCOL
PLL0
FM SENS
LOCAL
DX
FERRITE-ROD
ANTENNA
AM
AM
OSC
FM VCO
BUFFER
FM
RF
FM/AM RF AMP,
MIX,OCS,DET,MPX
BASS BOOST
SWITCH
BASS BOOST
AMP
RIPPLE FILTER
HEADPHONE AMP
DRY BATTERY
SIZE"AAA"
(IEC DESIGNATION R03)
2PCS. 3V
B+ SWITCH
-1
-2
12
12
1
1
START/STOP
POWER
SPRIT/RESET
MEGA BASS
BAND
MODE
ENTER
HOLD
ON
OFF
TUNE/
TIME SET
+
TUNE/
TIME SET
-
PRESET
TUNING
5
PRESET
TUNING
PRESET
TUNING
PRESET
TUNING
PRESET
TUNING
PRESET
TUNING
6
4
2
1
3
LIQUID CRYSTAL DISPLAY
SYSTEM CONTROLLER
FM VCO AMP
FM VCO
SWITCH
LOW-PASS
FILTER
-1
-2
-1
-2
Q104,T101
DC/DC CONVERTER
VOLTAGE
DETECTOR
VOLTAGE
DETECTOR
VOL
100mH
mPD17072GB
4-6.
SCHEMATIC  DIAGRAM  – MAIN/KEY Boards –
 See page 9 for Waveforms.
 See page 13 for IC Block Diagrams.
Page of 17
Display

Click on the first or last page to see other SRF-M80 service manuals if exist.