Sony HCD-GNX66 / HCD-GNX77 / MHC-GNX66 / MHC-GNX77 Service Manual ▷ View online
25
HCD-GNX66/GNX77
SECTION 7
DIAGRAMS
Note: The components identified by mark 0 or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
(The other layers' patterns are not indicated.)
• Indication of transistor.
Caution:
Parts face side:
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
Note on Printed Wiring Boards:
Note:
• X : parts extracted from the component side.
•
Note:
• X : parts extracted from the component side.
•
: Pattern from the side which enables seeing.
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 V or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• 5 : fusible resistor.
• 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.
BD84 board
no mark: CD PLAY
Other board
no mark: TUNER (FM/AM)
( ) : CD PLAY
<
BD84 board
no mark: CD PLAY
Other board
no mark: TUNER (FM/AM)
( ) : CD PLAY
<
> : TAPE PLAY
[
] : TAPE REC
*
: Impossible to measure
• 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 PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: RECORD
J
: CD PLAY
N
: MIC INPUT
c
: CDG
g
: VIDEO
26
HCD-GNX66/GNX77
7-1. CIRCUIT BOARD LOCATION
CD-SW board
TRANS board
PA board
SURROUND board
SWITCHING POWER
TUNER PACK
PRIMARY board
CDG board
MAIN board
MIC board
JOG board
PANEL board
MOTOR (LD) board
SW board
SENSOR board
BD84 board
DRIVER board
MOTOR (TB) board
HCD-GNX66/GNX77
27
27
HCD-GNX66/GNX77
7-2. BLOCK DIAGRAM – CDG SECTION –
MP3 STB
MP3 REQ
XTCN
MP3 REQ
MP3 STB
MP3 CLK
MP3 CLK
MP3 ACK
MP3 ACK
MP3 DATA OUT
MP3 DATA
MP3 LP
MP3 LP
MP3 CS
MP3 RST
MP3 CS
MP3 RST
MP3 DATA IN
SCOR
SENS
CD-CLK
XLAT
CD-DATA
XRST
XTCN
SCOR
SENS
CLOCK
XLT
DATA
XRST
R-CH
CD-L
CD MUTE
A
MAIN
SECTION
(Page 29)
B
DISPLAY
SECTION
SECTION
(Page 31)
IC731
(TABLE SENSOR)
IC701
(LD)MOTOR DRIVER
4
2
2
9
7
7
RIN
FIN
OUT1
OUT2
IC712
TBL MOTOR DRIVER
4
2
2
9
7
7
RIN
FIN
OUT1
OUT2
LMR
LMF
TM-R
TM-F
TBL_SENS
E-1
E-2
E-3
OPEN SW
Q731
M751(LOADING)
M741(TBL)
RE701
S751
(LEVER SW)
ROTARY
ENCODER
E-3
E-2
E-1
INVERTER
M
M
D+3.3V
OPTICAL PICK-UP
BLOCK
(KSM-215DCP/C2NP)
LD
DRIVER
Q10
CD DIGITAL
OUT
OPTICAL
CD MUTE
Q250,251
Q250,251
+3.3V
LD
GND
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
IC251
X171
16.9MHz
SL/SP MOTOR
DRIVER
12
6
11
13
14
VR
PD
15
16
17
18
4
26
23
2
20
MUTE
CH2OUT-F
CH1FIN
OUT
VREF
CH1RIN
CH2FIN
SFDR
OPIN+
CH2OUT-R
CH1OUT-R
CH1OUT-F
CH4OUT-R
CH4OUT-F
CH3OUT-F
CH3OUT-R
M
M
M101
(SPINDLE)
M102
(SLED)
S101
(LIMIT)
VCC
VC
A
B
C
D
E
F
DETECTOR
A
B
E
19
F
20
LD
36
PD
37
TFDR
11
FFDR
13
CH3FIN
9
OPTICAL
OUT
3
SSTP
7
MPD
6
95
XTACN
100
XRST
102
DATA
104
XLAT
105
CLOCK
86
AOUT2
81
AOUT1
71
DOUT
61
PCMD1
62
LRCKI
63
LRCK
65
PCMD
DIGITAL SIGNAL
IC301
PROCESSOR
SYSTEM
IC401 (1/5)
CONTROL
IC210
21
40
SDO0
11
LRCKIA
16
SFSY/LRCK1B
19
SDI0
14
77 XTAO
78 XTAI
55
VDD
VDD
VDDM
26
25 VC
27
C
28
D
29
107
SENS
XTCN
XRST
DATA
XLT
CLOCK
SENS
113
GFS
114
C2PO
TRDR
NC
NC
12
22
SRDR
CH3RIN
10
CH2RIN
FRDR
14
XRST
100
66
BCK
60
BCK1
BCKIA
15
SBSY/BCK1B
18
5
+3.3V
IC303
7
5
1
3
26
27
25
7
5
24
23
22
46
45
44
43
39
42
41
6
19
21
40
38
18
3
2
1
28
35
37
STANBY
36
PO11/BUCK/AD1
8
MIACK
7
MICK
6
MIDIO
4
MICS
5
MILP
2
RESET
41
SRMSTB
115
SCOR
SCOR
REG
CD MUTE DRIVE
Q540, 541
IC101
RF AMP
IC1002
DRAM
IC1001
VIDEO D/A
IC1003
+5V REG.
IC1006
VIDEO BUFFER
25,27,29,30
VA0-7
15-22
VD0-3
14
4
26
23
RAS
CAS
CAS
A0-7
DQ1-4
X1002
14.31818MHz
60
XO1
59
XI1
X1001
17.734475MHz
58
XO2
57
XI2
+B SWITCH
Q1007,1008
NO402
CN402
IIC-CLK
IIC-DATA
IIC-CLK
IIC-DATA
3
4
CNVSS
J1001
TXD1
RTS1
ON BOARD
PROGRAM
PROGRAM
CLK1
RXD1
CN VSS
RESET
RESET
VIDEO
OUT
VMUTE
13
3
WE
28
22
CE
3
2
6
9
7
8
RAS
CAS
CAS
WE
CE
3
98
DATA
SBSO
5
110
SFSY
WFCK
2
99
CLCK
EXCK
6
MUTE
56
PDOWN
1,2,24,25
9-12,14-17
9
8
5
4
Q1004
SBSY
Q1005,1009
6
3
4
1
2
11
10
13
12
IC1005
Q1010
VCC
55
SENTSC
54
RESET
Q1002,1006
Q1003
52
DEN
37
GDET
MUTE DATA
HALT_CLK
PAL/_NTSC
CDG-RST
CDG/_BDG
CDG-DET
CDG/-POWER
CDG/_BGC
CDG/-DET
44
VDOUT
Q1001
34 33 31 32 9
MUTE DATA
HALT_CLK
VMUTE
CDG-RST
CDG/_BDG
CDG-DET
CDG-POWER
CNVCC
VMUTE
CDG RST
CDG/BDG
CDG DET
CD POWER
CNVCC
VMUTE
CDG-POWER
1
4
2
3
PWR
VIN
SAVE
6
VCC
VOUT
1
3
VIN
VOUT
: CD
: CDG
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
: VIDEO
HCD-GNX66/GNX77
28
28
HCD-GNX66/GNX77
7-3. BLOCK DIAGRAM – TAPE SECTION –
ST-L
E
MAIN
SECTION
(Page 29)
REC-OUT-L
D
MAIN
SECTION
(Page 29)
TC BLOCK
32
A TRIG
DRIVE
: PLAYBACK (DECK B)
: PLAYBACK (DECK A)
R-CH
FM/AM TUNER UNIT
CN509
ANTENNA
ST-L
FM ANT
AM ANT
AM ANT
ST-R
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-CE
FM 75
COAXIAL
CAP M+
BTRGM+
ATRGM+
AHALF
BHALF
APLAY
BPLAY
B SHUT
A SHUT
A SHUT
REC(FWD)
REC(REV)
CAPM-CONT
B-TRIG
A-TRIG
TC-RELAY
A-HALF
B-HALF
A-PLAY
B-PLAY
BSHUT
ASHUT
ASHUT
REC BIAS
PB-A/B
ALC
REC-MUTE
TC-MUTE/IO-EXP DATA OUT
AM
EQ OUT1
A
B
TUNED
MC DOUT(ST)
MC DIN(ST)
ST-CLK
ST-CE
ST-CE
34
28
27
26
24
21
56
59
58
67
65
90
89
51
47
94
48
57
53
B TRIG
DRIVE
55
CAP MOTOR
DRIVE
54
88
86
84
87
85
13
11
15
14
PB OUT1
TAI1
REC IN1
AIN1
BIN1
A/B
ALC ON/OFF
REC MUTE ON/OFF
MUTE ON/OFF
DECK A/B SELECT
PB/REC EQUALIZER AMP
IC301
Q340, 343
Q342, 345
Q341,344
SYSTEM CONTROL
(CD/TAPE MECHANISM CONTROL)
IC401(2/5)
REC-OUT1
EQ
TC-PB-L
TEST
CONNECTOR
CN510
R-CH
R-CH
R
L
C
MAIN
SECTION
(Page 29)
MUTE
Q280
MUTE DRIVE
Q542, 543
PB
HEAD
DECK-A
DECK-B
BIAS OSC
Q370
BIAS
TRAP
SWITCH
DRIVE
Q377, 379
SWITCH
DRIVE
Q382, 383
R-CH
R-CH
Q376
Q373, 374
Q381
L – CH
R – CH
R-CH
C174, L104
BIAS+9V
REC/PB
HEAD
ERASE
HEAD
Q378,380
T301
L – CH
R – CH
: TUNER (FM/AM)
: RECORD
• SIGNAL PATH
• R-CH is omitted due to same as L-CH.
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