Sony HCD-VX777 Service Manual ▷ View online
21
21
HCD-VX777
6-2. BLOCK DIAGRAMS
– TUNER/CD SECTION –
: FM
: AM
: CD
• Signal Path
• RCH is omitted
: DIGITAL OUT
FM 75
Ω
G
AM
TM1
ANT IN
1
7
IF OUT
8
OSC OUT
5
VT
FE1
VX777 MODEL
JR9
+B
A+12V
Q2
FM
10
FM OSC
16
AOUT
20
AIN
19
PD
18
PLL
IC51
12
FM/AM IF
7
FM
15
AM OSC
9
VCO STOP
8
IF REQ
6
DO
4
DI
5
CL
3
CE
XIN
1
XOUT
22
X51
4.5MHz
RF IF
AMP
AMP
Q1
CF1
CF2
DO
DI
CL
CE
2
11
4
9
RB4
6
3
10
7
8
1
2
AM MIX OUT
FM
11
OSC FM
24
VCO STOP
12
IF REQ MUTE
10
AM RF IN
21
AM OSC
23
VCC
9
FM IF
1
AM/FM IF MPX
IC11
13
L OUT
14
R OUT
BUFFER
Q11
LPF11
LPF
4
AM IF IN
IF11
R-CH
A
MAIN
SECTION
6
TUNED
7
STEREO
RV11
ST MUTE
21
CE
22
CL
27
MC DI
25
MC DO
23
STEREO
2
TUNED
3
MASTER CONTROL
IC501(1/2)
DO
CL
CE
DI
DI
L-CH
TBL ADDRESS
SENSOR
49
T SENS
IC711
48
BU UP/DOWN SW
46
OPEN SW
47
CLOSE SW
44
MTR CNT2
OPEN/CLOSE
S701
BU UP/
DOWN
S711
45
MTR CNT1
MOTOR
DRIVE
9
7
4
2
M
IC701
TURN
MOTOR
M721
(Page 23)
OPTICAL
PICK-UP
BLOCK
(A, MAX3)
+5V
LD
DRIVE
Q101
RF AMP
IC103
VC
27
A
6
B
7
C
8
D
9
E
10
F
11
LD
1
PD
2
IC102 MOTOR/COIL DRIVE
VO1+
47
VO1–
VO2+
VO2–
52
55
56
1
2
M
M102
SLED
MOTOR
5
10
M
M101
SPINDLE
MOTOR
35
IN1+
IN1–
IN2+
IN2–
IN3+
IN4R
34
32
31
26
27
24
8
MDP
25
SFDR
29
SRDR
30
TRDR
32
TFDR
31
FRDR
34
FFDR
33
STBY
DIGITAL SIGNAL PROC.
D/A CONV.
IC101
DIGITAL SERVO
64
D OUT
RFAC
50
29
RFDCI
28
RFDCO
16
FE
18
TE
22
VCC
12
SW
RFDC
43
FE
39
TE
41
SE
40
67
65
14
SSTP
26
DIGITAL
OUT
OPTICAL
CD
DIGITAL OUT
IC201
4
B
VIDEO
SECTION
5
6
7
8
3
69
15
76
77
71
2
66
S101
A+5V
LIMIT
SWITCH
IIC-DATA
30
IIC-CLK
29
XRST
I
2
C, DATA
I
2
C, CLK
XRST
43
A DATA
B CLK
L RCK
C2PO
DATA
XLT
CLK
SENS
S CLK
MUTE
CTRL1
SCOR
SUSQ
SQCK
XRST
XTAI
PCMD
B CLK
L RCK
C2PO
DATA
XLAT
CLOK
SENS
S CLK
MUTE
XTSL
SCOR
SQSO
SQCK
XRST
XTAI
LD ON
LPH
(Page 22)
VO4+
VO4–
VO3+
VO3–
IN3–
C
VIDEO
SECTION
(Page 22)
15
RFA
26 SSTP
: VIDEO
HCD-VX777
22
22
15
13
41
BUS XHOLD
46
BUS XWRL
XRESET
XOUT
DF LATCH
V. MUTE
XIN
86
21
45
95
97
VSYNC
DSP DATA
DSP LATCH
SENSE CLK
DSP CLK
SENSE
DSP MUTE
CTRL1(L:DOUBLE)
LPH
LDON
LDON
SCOR
SUBQ DATA
88
BGP
CHROMA LEVEL
RESOLUTION
65
22
X501
5V
TP522
TP523
SL503
CN503
SL502
SL501
10MHz
X503
27MHz
VIDEO CD CONTROL
IC502
LEVEL SHIFT
IC504
LEVEL SHIFT
IC501
D-RAM
IC507
ROM
IC506
AMP
IC101
IC304
Y/C MIX
VIDEO/CD DECODER
IC505
DIGITAL FILTER & D/A CONVERTER
IC509
DATA1O
DATA1I
CLK1
CL680 INT
CL680 INT
CL680 HSEL
CL680 HRDY
680 RESET
HSYNC IN
TXD
S CLK
RXD
RST
BUSY
HOLD
XWR
FOR
FLASH
ROM
WRITE
DATAI
CLK1
DATAO
DATA0
DATAI
CLK1
INT
INT
HSEL
HRDY
RESET
ADATA
BCLK
LRCK
C2P0
DATA
XLT
CLK
SENS
SCLK
MUTE
CTRL1
LPH
LDON
SCOR
SUBQ
SQCK
XRST
XTAI
B
CD
SECTION
(Page 21)
SUBQ CLK
DEVICE RESET
85
12
I
2
C.CLK
29
I
2
C.DATA
30
5
1
3
1
2
5
8
3
4
2
10
11
81
82
18
83
84
77
20
87
87
37
36
35
69
HD-OUT
6
CD-C2P0
CD-LRCK
CD-BCK
HRDY
HD-IN
HCK
HINT
HSEL
RESET
PGIO2/VSYNC/CSYNC
INVERTER
Q502
CD-DATA
MWE
W
E
RAS
UCAS
LCAS
A0
A8
DQ1
DQ16
RASO
CAS
MCE
MD0
I
MD15
MA0
I
MA10
Y-OUT
DA-DATA
DA-BCK 111
VCK-IN 106
DA-XCLK 86
110
DA-LRCK 108
112
119
117
117
113
114
121
101
93
PGIO3/HSYNC
INVERTER
Q501
60
3
5
5
4
13 14 28 29
38 42
40
10
8
4
13
5
1
1
3
8
6
11
1
3
2
7
19
17
DATA0
CLK1
8
7
10
21 20
4
11
18
MODE
PLM
D/A
CONV
CLOCK
DIVIDER
9
24
1
16 - 19 22 - 26
2 - 10 31 - 39
O0
O7
A11
A17
A0
A10
CE
13 - 15 17 - 21
25 4 28 29 3 2 30
12 - 5 27 26 23
58 - 44
10 - 29
22
37
TEST3
76
TEST2
75
TEST1
74
TEST LED
73
IC302
Y AMP/PICTURE CORRECTION
1
V IN
8
TINT
5
6
BGD
Q301
V OUT
1
3
2
4
14
J302
J301
VIDEO
FREQUENCY
CT503
CD-L
(L - CH)
R-CH
27MHz
384FS
S VIDEO
OUT
OUT
TEST
MODE
SELF-DIAGNOSIS
VIDEO OUT
DATAI
DATAO
CLK1
CLK1
HRDY
INT
HSEL
HSEL
RST
CLK1, DATA0
C-OUT 75
12
15
IC303
HUE CONTROL
VIDEO
IN
IN
Y IN
MIX OUT1
Y OUT1
C OUT1
C IN
8
9
MUTEB
1
MUTEA
5
1
CONTROL
VIDEO
OUT
(XTAL 33.8MHz)
27MHz
RSTB
3.3V REG
Q531
+3.3V
D5V
D
MAIN
SECTION
(Page 23)
C
TUNER
SECTION
(Page 21)
34
RTS1
11
10
I
2
C.DATA
I
2
C.CLK
XRST
10
– VIDEO SECTION –
23
23
HCD-VX777
– MAIN SECTION –
REC
BIAS
BIAS
TRAP
TRAP
R-CH
R-CH
R CH
BIAS
OSC
Q302,303
RV304
Q301
TA+12V
C332,L301
ERASE
HEAD
REC/PB
HEAD
PB EQ
AMP
IC304
RV303
IC302
REC/PB SWITCH
REC
EQ
BIAS
SW
DOLBY
B
NORM
CROM
REC(L)
LEVEL
LEVEL
RV301
40
1
2
3
4
48
46
A
B
70
120
PB
REC
DOL
PAS
PB
REC
36
33
32
38
39
43
BIAS ON/OFF
20
B NORM/CROM/METAL
ALC ON/OFF
15
RM ON/OFF
22
NR ON/OFF
23
REC /PB/PASS
24
LM ON/OFF
25
MS OUT
26
A
TUNER
SECTION
D
VIDEO
SECTION
MD/VIDEO
(AUDIO)
R-CH
L-CH
LOUT
L-CH
J101
L
R
R-CH
PB
HEAD
DECK-B
DECK-A
PB EQ
AMP
IC303
RV302
SWITCH
Q304,305
17
A120/70
PB A/B
16
NORM/HIGH
18
DECK PROC.
IC301
INPUT SELECT
TONE/VOL CONT
IC101
IN2A
40
IN2C
38
IN2D
37
INVOL OUT2
35
IN2B
39
24
VOL OUT2
DATA
21
CLOCK
22
R-CH
1
REF
DBFB
SWITCH
Q503
DBFB
CONT
Q101,102
5
6
7
IC102
MUTE
Q103
Q103
MUTE
CONT
CONT
Q504,505
POWER
AMP
IC501
18
12
10
R CH
J102
MUTE
Q581
MUTE
CONT
CONT
Q503,504
MUTE
Q862
MUTE
CONT
CONT
Q861
D551
OVER LOAD
DETECTOR
Q501, 551
OVER HEAT
DETECTOR
Q505,506
+B
D502
PROTECT
DETECTOR
Q821,822
PROTECT
CONT
Q823
PROTECT
SWITCH
Q828,829
RELAY
DRIVE
DRIVE
Q824,825
RY801
J631
PHONES
R CH
R CH
SURROUND
SPEAKER
L
R
TM801
SPEAKER
90
B SHUT
89
A SHUT
57
B PLAY
56
A PLAY
91
B HALF
70
A HALF
67
PB A/B
A TRIG
DRIVE
CAP MOTOR
DRIVE
Q396,397
Q393,394
CN304
B TRIG
DRIVE
Q391,392
CAP MOTOR
SPEED CONT
Q395
A TRIG
51
B TRIG
52
CAP M H/L
54
CAP M CONT
55
TC BLOCK
A120/70
B120/70
A HALF
B HALF
A PLAY
B PLAY
A SHUT
B SHUT
A TRG M+
B TRG M+
CAP M H/L
CAP M+
19
69
TC RELAY
IC501(2/2)
MASTER CONTROL
66
EQ H/N
68
ALC
65
BIAS
61
REC MUTE
60
NR ON/OFF
59
R/PB PAS
58
TC MUTE
53
AMS IN
80
GEQ DATA
81
GEQ CLK
79
DBFB ON/OFF
DC
BIAS
Q141
+6V
A+12V
82
LINE MUTE
83
STK MUTE
87
FRONTRELAY
88
PROTECT
30
IIC DATA
10
XC IN
11
XC OUT
15
X IN
13
X OUT
32.768kHz
X501
16MHz
X502
BPF 0
BPF 5
P1
P47
G1
G13
FLOURESCENT
INDICATOR TUBE
DISPLAY CONTROL
IC601
F1
F2
LED
DRIVER
Q606-614
D604-609
D612-618
D612-618
11
FUCTION
KEY
60 IIC DATA
61 IICCLOCK
VOL 1A
80
VOL 1B
79
S751
VOLUME
X601
4.0MHz
FL601
IC602
6
47
1
5
93
100
67
72
ALL BAND
73
HEADPHONE
78
S768-781
10
10
5
PLAY1-3
EXIST1-3
LED
DRIVER
Q630-635
D630-632
54
TAPE/A/B LED
55
TUNER A/B LED
52
REC/PAUSE LED
53
ENTER LED
56
MD/VIDEO LED
57
CD/VCD LED
58
GAME IN LED
LED
DRIVER
Q601-605
D791-793
LED
DRIVER
Q791-793
D751,752
LED
DRIVER
Q751,752
59
DISC 1 LED
74
DISC 2 LED
75
DISC 3 LED
POWER
D794
LED
DRIVER
Q694
12
18
SPEANA
BPF
6
5
4
3
KEY0
CDM M+7V
64
FUCTION
KEY
S753-767
KEY1
65
FUCTION
KEY
S601-606
KEY2
66
77 RESET
83
XIN
82
XOUT
MIC 1
J721
MIC
VOL
RV722
IC722
IC722
29
IIC CLK
100
AC CUT
STBY RELAY
RESET
74
POWER KEY
CD POWER
T301
D822
(Page 21)
(Page 22)
38
12
84
•
T910
S901 (1/2)
AC
IN
IN
REG
VH
-VH
VL
-VL
D541
D543
1
3
REG
1
3
REG
1
3
REG
1
3
RESET
Q891,892
FAN
DRIVER
RELAY
DRIVER
Q971
IC502
IC911
IC951
IC921
IC961
+5.6V
REG
1
3
IC971
CD D+5V
D901-904
D906-909
CD A+5V
A+5V
A+12V
TCA+12V
MCA+12V
VP
VF(1)
VF(2)
STA+12V
CDM M+7V
LED+7V
TCMM+9V
JW975
2
1
CN974
FAN
Q575
F971
F977
F974
F975
F976
JW971
JW974
JW973
JW993
JW954
RY971
D972-975
SUB
TRANSFORMER
T972
D920-922
120
220
230-240
120
220
230-240
JW990
S901 (2/2)
MIC 2
J722
ECHO
LEVEL
RV721
IC721
ECHO
LEVEL 6
2
HCD-VX777
24
24
6-3. SCHEMATIC DIAGRAM – BD SECTION – • See page 20 for Waveforms. • See page 58, 59 for IC Block Diagrams. • See page 48 for IC Pin Function.
TO
VIDEO BOARD
(1/3)
VIDEO BOARD
(1/3)
IC B/D
(Page 27)
Note:
The components identified by mark
The components identified by mark
0
or dotted line with
mark
0
are critical for safety.
Replace only with part number specified.
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