Sony HCD-GN70V / MHC-GN70V Service Manual ▷ View online
25
HCD-GN70V
SECTION 7
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• 5 : fusible resistor.
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
•
• X : parts extracted from the component side.
•
: Pattern from the side which enables seeing.
(The other layers´ Patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
• Indication of transistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
BD board and VIDEO board section
no mark: CD PLAY
Other board section
no mark: TUNER (FM/AM)
( ): CD PLAY
< >: TAPE PLAY
[ ]: TAPE REC
BD board and VIDEO board section
no mark: CD PLAY
Other board section
no mark: TUNER (FM/AM)
( ): CD PLAY
< >: TAPE PLAY
[ ]: TAPE REC
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM/AM)
E
: TAPE PALY (DECK A)
d
: TAPE PALY (DECK B)
G
: RECORD
J
: CD PALY (ANALOG OUT)
q
: MD/VIDEO (AUDIO) IN
j
: GAME IN (AUDIO)
k : GAME IN (VIDEO)
N
N
: MIC INPUT
g : VIDEO
Note:
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• Abbreviation
E3
: 240 V AC Area in E model
E15 : Iran model
EA
EA
: Saudi Arabia model
SP
: Singapore model
MY : Malaysia model
TH
TH
: Thai model
PH
: Philippines model
• Abbreviation
E3
: 240 V AC Area in E model
E15 : Iran model
EA
EA
: Saudi Arabia model
SP
: Singapore model
MY : Malaysia model
TH
TH
: Thai model
PH
: Philippines model
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
26
HCD-GN70V
7-1. CIRCUIT BOARD LOCATION
TUNER PACK
SUB TRANS board
POWER AMP board
TRANS board
DISPLAY board
VOLUME board
GAME IN board
MOTOR (LD) board
SW board
SENSOR board
BD board
MOTOR (TB) board
DRIVER board
MAIN board
CD SWITCH board
VIDEO board
HCD-GN70V
27
27
r
WAVEFORMS
– MAIN BOARD –
– BD BOARD –
– DISPLAY BOARD –
1
IC501 qa (XC-OUT)
2
IC501 qd (X-OUT)
3
Q303 C
TAPE REC only
1.2Vp-p
32.768KHz
VOL/DIV : 0.5V AC
TIME/DIV : 10 µsec
TIME/DIV : 10 µsec
VOL/DIV : 0.5V AC
TIME/DIV : 20nsec
TIME/DIV : 20nsec
VOL/DIV : 2V AC
TIME/DIV : 5 µsec
TIME/DIV : 5 µsec
1.8Vp-p
16MHz
10Vp-p
76KHz
1
IC601 is (X OUT)
VOL/DIV : 1V AC
TIME/DIV : 0.2 µsec
TIME/DIV : 0.2 µsec
4MHz
3.0Vp-p
– VIDEO BOARD –
1
IC103 qg (RFAC)
2
IC103 qh (FE)
3
IC103 qk (TE)
VOL/DIV : 0.2V AC
TIME/DIV : 0.5µsec
TIME/DIV : 0.5µsec
VOL/DIV : 0.2V AC
TIME/DIV : 0.2msec
TIME/DIV : 0.2msec
VOL/DIV : 1V AC
TIME/DIV : 0.2msec
TIME/DIV : 0.2msec
0.8 Vp-p
0.15 Vp-p
0.7 Vp-p
5
Q301 E
6
IC307 6 (VOUT)
1.0 Vp-p
H
0.8 Vp-p
H
0.8 Vp-p
H
1
IC505 (XTAO)
150
2
IC505 (CLKB)
207
3
IC505 (RFAC)
173
2.5 Vp-p
33.8688 MHz
2.8 Vp-p
27 MHz
VOL/DIV : 1V AC
TIME/DIV : 20nsec
TIME/DIV : 20nsec
VOL/DIV : 1V AC
TIME/DIV : 20nsec
TIME/DIV : 20nsec
VOL/DIV : 0.5V AC
TIME/DIV : 20 µsec
TIME/DIV : 20 µsec
VOL/DIV : 0.5V AC
TIME/DIV : 20 µsec
TIME/DIV : 20 µsec
4
IC505 6 (CPSIG)
VOL/DIV : 0.5V AC
TIME/DIV : 20 µsec
TIME/DIV : 20 µsec
VOL/DIV : 0.2V AC
TIME/DIV : 0.5 µsec
TIME/DIV : 0.5 µsec
0.8 Vp-p
HCD-GN70V
28
28
7-2.
BLOCK DIAGRAM – CD SERVO SECTION –
VO1-
VO1+
4
3
11
10
1
27
26
32
31
35
34
1
2
5
10
E
B
C
D
A
PD1
PD2
I1-6
I5-10
LD
PD
+4.5V
F
A
VCC
VCC
VCC
VCC
B
C
D
RF
SUMMING
AMP
A-D
FOCUS
ERROR AMP
RF EQ
AMP
DC
AMP
VDC
BUFFER
TRACKING
ERROR AMP
RFAC
AC_SUM
EQ_IN
RFDCO
RFDCI
FE
FEI
RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
TE
VDC
E
F
F I-V AMP
E I-V AMP
LD
DRIVE
Q101
APC LD
AMP
APC PD
AMP
LD
LD
PD
LASER DIODE
IN3+
IN4
VREF
IN3-
VO3+
VO3-
IN2+
T+
T-
F+
F-
IN2-
IN1+
IN1-
8
STBY
DATA DECODERR,
D/A CONVERTOR
IC506
VIDEO AMP
IC307
LPF
IC102
D/A
CONVERTOR
IC504
SDRAM
IC507
ROM
IC508
VO4+
VO4-
M101
SPINDLE
MOTOR
MOTOR
DRIVE
MOTOR
DRIVE
COIL
DRIVE
VO2-
VO2+
COIL
DRIVE
M
M
M102
SLED
MOTOR
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
TRACKING
COIL
S101
(LIMIT)
ON: when the optical pick-up
is inner position.
FOCUS
COIL
OPTICAL PICK-UP BLOCK
(A-MAX.3)
SW
PD
TE
LD-ON
FE
RFDC
I-V AMP
56
55
47
52
Q102
RFC
DI
CLK
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
WE
CAS
RAS
BA0
CLK
LDQM
UDQM
SI
SO
SCK
SRQ
SOK
SCS
RST
SYS RST
NVOEL
Y
CPSIG
AUDXCLKO
MCLK
LAT
CLK
BLK
LRCK
LOUT
VCD L-CH
R-CH
VCD-VIDEO
VCC
A+5V
(SW)
VDD
ROUT
DATA
DATA
AUDDTO0
AUDLRCK
AUDBCK
GPIO11
DRDQM1
DRDQM0
DRCK
DRBS
DRRAS
DRCAS
DRWEL
8-15
0-7
0-15
RST
RST
DATA
CLK
GPIO14
SSTP
FRDR
FFDR
TRDR
TFDR
SRDR
SFDR
VC
CE
DE
SE
TE
FE
RFDC
RFAC
XTSL
MDP
GPIO9
XTAO
XTAI
CLKB
CLKA
GPIO13
GPIO12
LD
X501
33.8688MHz
X502
27MHz
A0-A9
DRDAT0
I
DRDAT15
DRADR0
I
DRADR10
DQ0-DQ15
A0-A16 DQ0-DQ7
CONTROL
I/F
STB
IN
OUT
+4.5V
(IC103)
+2.5V
D+5V
(SW)
+3.3V
+3.3V
REG
Q581
SYSOK
SQ-CLK
V-MUTE
SYSOUT
SYSIN
SYSCLK
SCOR
SYSRQ
SYSRST
RST
SRQ
SCS
SOK
SCK
SO
SI
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (1/4)
CD-DSP,
DIGITAL SERVO,
MPEG DECODER, DAC
IC505
Q370
DAC
DAC
To MAIN
SECTION
(Page 30)
To MAIN
SECTION
(Page 30)
A
B
RIPPLE FILTER
Q201
+2.5V REG
IC201
+3.3V REG
IC202
+2.5V
(
(
LPF
Q301
6
13
22
7
8
9
15
26
16
18
12
14
2
28
29
17
23
22
5
9
3
4
6
12
11
135
143
142
141
140
138
137
165
161
133
189
24
150
149
207
206
164
160
173
16
15
14
13
2
3
1
7
8
5
6
5
3
7
1
201
204
203
26
205
162
163
10
30
29
28
13 14 15 16 18 19
16
73
68
72
76
70
77
78
74
6
2
3
6
5
33
24
17 18 20 38 15 39
81
AO4
AO6
AO3
AO5
RST
2,4,5,7,8,10,11,13,
42,44,45,47,48,50,51,53
42,44,45,47,48,50,51,53
2-12,23,
25-31
25-31
13-15,
7-21
7-21
23-26,
29-34
29-34
34-37,
39-45
39-45
49-56,
59-66
59-66
35
40
36 37
19
32
40
1
3
: CD PLAY (ANALOG)
: VIDEO
TBL-SENS 41
OPEN SW
Q731
S751
(LEVER)
D+3.3V
42
LMF 46
LMR 47
44
TM-R
E-1
E-2
E-3
45
21
22
43
TM-F
9
7
3
4
1
2
RIN
FIN
9
7
MOTOR
DRIVE
4
2
4
2
MOTOR
DRIVE
OUT
OUT
OUT
OUT
RIN
FIN
MOTOR DRIVER
IC712
RE701
ROTARY
ENCODER
MOTOR DRIVER
IC701
TABL SENSOR
IC731
M751
(LOADING)
M
M
M741
(TABLE)
• SIGNAL PATH
• R-ch is omitted due to same as L-ch.
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