Sony CFD-G70 Service Manual ▷ View online
17
CFD-G70
SECTION 5
DIAGRAMS
5-1. EXPLANATION OF IC TERMINALS
IC802 CXP83620-031Q SYSTEM CONTROL
1
WRQ
I
CD subcorde Q signal input
2
RMC
I
Remote control signal input
3
R-MUTE
O
Radio mute signal output
4
ADJ
O
DC 1.7 V output for beep signal (Not used)
5
C-FSEQ
I
CD FSEQ signal input
6
C-CE
O
CD chip select signal output
7
C-CL
O
CD clock signal output
8
C-DO
I
CD serial data signal input
9
C-DI
O
CD serial data signal output
10
C-DRF
I
CD DRF signal input
11
C-RES
O
CD reset signal output
12
NC
—
Not used
13
SUR ON/OFF
O
Surround ON/OFF signal output
14
R-COUNT
I
Radio count signal input
15
R-CLOCK
O
Radio control clock signal output
16
R-DATA
O
Radio control data signal output
17
R-CE
O
Radio latch signal output
18
V-LATCH
O
Data latch signal output to LC75342 (VOL IC)
19
V-DATA
O
Data signal output to LC75342 (VOL IC)
20
V-CLOCK
O
Clock signal output to LC75342 (VOL IC)
21
P-CON
O
Power control signal output
22
REG CHK
I
Regulator voltage check signal input
23
REC
I
Tape recording function signal input
24
SDA
I/O
EEPROM serial data in/out
25 – 27
KEY-1 – 3
I
Key input terminal of A/D port
28
LIGHT CONT
O
Woofer monitor LED ON/OFF signal output
29
MODE CHECK
I
Reading specification and MEGA BASS signal input terminal (A/D port)
30
RST
I
System reset signal input
31
EXTAL
I
Crystal oscillator terminal (4.0MHz)
32
XTAL
O
Crystal oscillator terminal (4.0MHz)
33
VSS
—
Ground terminal
34
VL
O
LCD bias control signal output
35
VLC3
—
LCD bias voltage terminal
36
VLC2
—
LCD bias voltage terminal
37
VLC1
—
LCD bias voltage terminal
38 – 41
COM0 – 3
O
LCD common signal output
42 – 59
SEG0 – 17
O
LCD segment signal output
60, 61
NC
—
Not used
62
INIT
O
Initial signal output
63, 64
WOOFER2, 1
O
Woofer function signal output
65
VM
O
Battery check signal output
66
VH
O
TAPE deck motor control signal output
67, 68
ISS1, 2
O
ISS select signal output
69
TAPE
O
TAPE function signal output
70
RADIO
O
Radio function signal output
Pin No.
Pin name
I/O
Description
18
CFD-G70
AC inlet board
TC board
BATT board
MAIN board
BATT COM board
CD board
TUNER board
CONTROL-2 board
CONTROL-1 board
HEADPHONE board
LCD board
POWER board
VOL SEL board
(E4 model)
(E4 model)
• Circuit Boards Location
• Abbreviation
E4
: 110-120V/220-240V AC changeable.
Pin No.
Pin name
I/O
Description
71
CD
O
CD function signal output
72
VDD
—
Power supply terminal
73
TX
O
Crystal oscillator terminal (153kHz)
74
TEX
I
Crystal oscillator terminal (153kHz)
75
NC
—
Not used (Open)
76
A-MUTE
O
Audio mute signal output
77
SCL
O
EEPROM clock signal output
78
EC
I
Connect to ADJ (pin 4)
79
TC-PLAY
I
Tape play switch (S321) input
80
CD DOOR
I
Door open/close switch (S801) input
CFD-G70
19
19
L4
CF2
CF4
X1
ANT1
CT3
CT1
T301
T2
L1
L2
D1
D2
D3
T1
Q805
75KHz
FM
TELESCOPIC
ANTENNA
IF-IN
LPF2
/MO-ST
IF-IN
OSC-OUT
FM OSC
L-OUT
R-OUT
CE
DI
CL
DO
BAND
ST-IND
IF IN
XOUT
XIN
LP-OUT
LP-IN
PD
MO/ST
FM IN
AM IN
FM
RF-IN
MIX-OUT
AM
FM
QUAD
LPF1
/BAND
MPX-IN
DET-OUT
IF-OUT
ST-IND
AM OSC
AM
RF-IN
FM
RF-OUT
DET,FM MPX
FRONT-END,IF AMP,
+
IC1
FM/AM
TU+6V
TU+6V
+
FERRITE-ROD
ANTENNA
L3
R-COUNT
R-DATA
R-CLOCK
RADIO
R-CE
REC
REC-MUTE
SYSTEM CONTROL
B+
SWITCH
PREOUT-L
LINE-L
L.IN
REF
REC
LINE
TAPE
REC/PB PRE AMP
HEAD
RECORD/
PLAYBACK
R-CH
L-CH
ERASE
HEAD
HRP301
HE301
ALC 2
DET
-1
-2
REC
PB
IC301
TU-L
PLL
IC2
AUDIO+6V
TU+6V
S301
(REC/PB)
AUDIO+6V
VT
VT
TU+6V
Q803,804
TAPE
R MUTE
L.LO
R.LO
L.RO
L.LIN
L.RAD
R MUTE
IC802(1/3)
AM IF
FM
TRACKING
CT1,L1
FREQUENCY
COVERAGE
FREQUENCY
COVERAGE
L4
TRACKING
L3,CT3
MPX
FM
OSC
OSC
AM
FM
FRONT-END
FRONT-END
AM
AM DET
FM DET
BIAS OSC
Q301
R-CH
R-CH
FM IF
R-CH
FM
L2
(FM OSC)
(FM RF)
AM
TU+6V
AM
TU+6V
TU+6V
AM
MAIN
SECTION
MAIN
SECTION
• Signal path.
F
: FM
f
: AM
a
: REC
E
: PB
5-2. BLOCK DIAGRAM – TUNER/TC SECTION –
20
20
CFD-G70
5-3. BLOCK DIAGRAM – MAIN SECTION –
SP392
SP391
D951
D952
M321
S322
S321
D324
X802
X801
S408
D958
D955
Q808
D805
D811
D812
J391
SP395
SP394
SP393
F901
S901
S801
J301
4MHz
153kHz
,Q809
T500mA
SYSTEM CONTROL
RMC
V-LATCH
V-DATA
V-CLOCK
RST
EXTAL
XTAL
VL
VLC3
VLC2
VLC1
COM 3
COM 0
SEG 0
TC-PLAY
KEY-3
KEY-2
KEY-1
A-MUTE
BATTERY CHECK
DISPLAY
LIQUID
CRYSTAL
DI
CE
CLK
IN
L.OUT
S.O
MUTE
STBY
VCC
POWER AMP
IC323
+6V REG
BUFFER
Q951
(IC801)
MOTOR
CAPSTAN/REEL
(MOTOR ON/OFF)
(TAPE PLAY)
*
F902
AC.HI
VDD
BATT.COM
VDD
LINE-L
PREOUT-L
TU-L
R-VT
CD-L
CD-R
CD-R
VDD-SW
(CD DOOR)
F902
CD
LINE
TUN
TAPE
LINE
TUN
TAPE
R2
CD
LINE
TUN
TAPE
LINE
TUN
TAPE
TXE
TX
SEG17
VDD SW
AC HI
LCD801
LIGHT CONT
WOOFER 2
WOOFER 1
SUR ON/OFF
P CON
VDD SW
VDD
VDD1
+3.3V REG
VDD SW
Q806,807
MODE CHECK
INIT
REG CHK
VM
VH
CD DOOR
+
MUTE
+
STBY
VCC
POWER AMP
+
G-XPAND
IC325
STBY
VCC
WOOFER AMP
IC324
R-
R+
R+
L-
L+
L+
W-
W+
W+
AGC
Q326,327
MUTE
Q122
Q122
Q121
Q321
-
6V
6V
6.3A 125V
T4AL
*
US,CND,E92,MX
US,CND,E92,MX
E4
E4
E4
SCL
SDA
SCL
SDA
CONTROL
VOL,BASS
INPUT SELECT,
IC321
CONTROL
INTERFACE
CCB
BASS
R-CH
VOL
SPEAKER
(L-CH)
SPEAKER
(R-CH)
D321
R-CH
+B SWITCH
Q952,953
RESET
+3.3V
REG
US
VDD-SW
AUDIO
+6V
T901
POWER
TRANSFORMER
AC IN
DRY BATTERY
SIZE"D"
(IEC DESIGNATION R20)
D901-904
(POWER)
(FOR POWER SUPPLY)
-
-
42
41
38
-
-
MOTOR
SWITCH
R-CH
R-CH
R-CH
59
REMOTE
CONTROL
RECEIVER
IC803
RMC REG
D806-808
D806-808
LED
DRIVER
Q812-815
D403,404
D402
D402-404
POWER DRIVE
WOOFER
D401
GAME
Xpand
Xpand
VDD1
S459-462
S451-458
OPR/BATT
D451
POWER
S401-404
IC804
IC801
Q957,D957
COM
+3.3V
B+5V
(CD)
(CD)
D954
Q954,955
Q956,D953
MODE
CHECK
Q810
LPF
IC322
SURROUND
SWITCH
Q328,329
R-CH
LEVEL
DETECT
(R-CH)
G-XPAND SPEAKER
G-XPAND SPEAKER
(L-CH)
WOOFER SPEAKER
R-CH
SURROUND
SWITCH
Q324,325
Q322,323
8PCS,12V
VOLTAGE
SELECT
GAME
LINE IN
+9V REG
110-120V 220-230V
US,CND,E92,MX
US,CND,E92,MX:120VAC 60Hz
CND,E92,MX
E4:220VAC 50Hz
EEPROM
IC805
IC802(2/3)
SECTION
SECTION
SECTION
CD
TUNER/TC
TUNER/TC
• Abbreviation
CND : Canadian
MX
MX
: Mexican
E92
: Central and South America
E4
: 110-120V/220-240V AC changeable
• Signal path.
F
: FM
a
: REC
E
: PB
J
: CD
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