Sony HCD-VX77J / MHC-VX77 / MHC-VX77J Service Manual ▷ View online
HCD-VX77/VX77J
25
25
7-2. BLOCK DIAGRAMS
– TUNER/CD SECTION –
: FM
: CD
• Signal Path
• RCH is omitted
: DIGITAL OUT
: VIDEO
FM 75
Ω
G
AM
TM601
ANT IN
8
1
IF OUT
3
F OUT
4
VT
FE602
+B
A+12V
Q602
FM
10
FM OSC
15
VT1 IN
18
VT1
17
PD1
19
PLL
IC651
12
FM/AM IF
7
FM
14
AM OSC
2
VCO STOP
8
IF REQ
6
DO
4
DI
5
CL
3
CE
XIN
1
XOUT
24
X651
4.5MHz
RF IF
AMP
AMP
Q602
CF601
CF602
DO
DI
CL
CE
1
13
3
4
5
5
12
2
14
15
11
6
7
9
RB641
19
AM MIX OUT
IF OUT
9
AM/IF
12
AM OSC
24
VCO STOP
13
IF REQ MUTE
8
AM RF IN
20
AM OSC
22
V REG
23
FM IF
1
AM/FM IF MPX
IC601
11
L OUT
10
R OUT
BUFFER
Q611
LPF601
LPF
18
AM IF IN
IFT601
R-CH
A
MAIN
SECTION
6
TUNED
17
STEREO
3
FM SD ADJ
RV611
ST MUTE
22
ST CE
25
ST CLK
28
ST DOUT
26
ST DIN
27
STEREO
23
TUNED
24
MASTER CONTROL
IC401(1/2)
DO
CL
CE
DI
DI
OPTICAL PICK-UP
BLOCK
(KSS-213F)
A
B
C
D
E
F
LD
VC
+5V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
09
Q101
RF AMP
IC103
VC
12
A
5
B
6
C
7
D
8
E
11
F
10
LD
3
PD
4
IC102
MOTOR/COIL DRIVE
VO1 (+)
14
VO1 (–)
VO2 (+)
VO2 (–)
13
12
11
16
15
M
M102
SLED
MOTOR
18
17
M
M101
SPINDLE
MOTOR
F+
F-
T+
T-
2
OPIN1 (+)
OPIN1 (–)
OPIN2 (+)
OPIN2 (–)
OPIN4 (+)
OPIN3 (–)
3
5
6
26
27
23
20
MDP
25
SFDR
29
SRDR
30
TRDR
32
TFDR
31
FRDR
34
FFDR
33
STBY1
STBY2
DIGITAL SIGNAL PROC.
D/A CONV.
IC101
DIGITAL SERVO
64
D OUT
RFAC
50
17
RFI
16
RFO
14
FE
13
TE
22
LD ON
21
HOLD 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
L-CH
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
SUBQ
SQCK
XRST
MCK
PCMD
B CLK
L RCK
C2PO
DATA
XLAT
CLOK
SENS
S CLK
MUTE
XTSL
SCOR
SQSO
SQCK
XRST
XTAI
LPH
LD ON
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 27)
(Page 26)
9
VO3 (–)
VO3 (+)
VO4 (–)
VO4 (+)
OPIN4 (–)
C
VIDEO
SECTION
(Page 26)
HCD-VX77/VX77J
26
26
– VIDEO SECTION –
15
13
09
41
BUS XHOLD
46
BUS XWRL
XRESET
XOUT
DF LATCH
V. MUTE
XIN
24
25
45
95
97
VSYNC
DSP DATA
DSP LATCH
SENSE CLK
DSP CLK
SENSE
DSP MUTE
CTRL1(L:DOUBLE)
LPH
LDON
LDON
SCOR
SUBQ DATA
22
BGP
CHROMA LEVEL
RESOLUTION
65
20
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
MCK
B
CD
SECTION
(Page 25)
• R CH: Same as L ch
• SIGNAL PATH
: CD
: CHROMA
:Y
: VIDEO
• SIGNAL PATH
: CD
: CHROMA
:Y
: VIDEO
SUBQ CLK
DEVICE RESET
23
12
I
2
C.CLK
29
I
2
C.DATA
30
5
1
3
1
2
5
8
3
4
2
10
11
27
27
28
18
37
36
77
20
21
21
33
32
31
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
IC301
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 (1/2)
(Page 27)
C
MAIN
SECTION (1/2)
(Page 25)
34
RTS1
11
10
I
2
C.DATA
I
2
C.CLK
XRST
10
HCD-VX77/VX77J
27
27
– MAIN SECTION –
RESET
: FM
: CD
• Signal Path
• RCH is omitted
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
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
SURROUND
PROCESSOR
IC103
TONE/VOL CONT
IC101
IN2A
40
IN2C
38
IN2D
37
INVOL OUT2
35
IN2B
39
24
VOL OUT2
34
IN2
DATA
21
CLOCK
22
L-IN
7
L-OUT 10
BP/SR
CONT2
CONT3
1
REF
DBFB
SWITCH
Q503
DBFB
CONT
Q101,102
5
6
7
IC102
MUTE
Q103
Q103
MUTE
CONT
CONT
Q504,505
POWER
AMP
IC501
15
12
11
R CH
J102
MUTE
Q581
MUTE
CONT
CONT
Q503,504
MUTE
Q862
MUTE
CONT
CONT
Q861
D841
OVER LOAD
DETECTOR
Q551
OVER HEAT
DETECTOR
Q506,506
+B
D502
PROTECT
DETECTOR
Q821,822
PROTECT
CONT
Q823
PROTECT
SWITCH
Q828,829
RELAY
DRIVE
DRIVE
Q824,825
RY801
J631
PHONS
R CH
R CH
FAN
FAN
DRIVE
Q891,892
SURROUND
SPEAKER
L
R
TM801
SPEAKER
91
B SHUT
90
A SHUT
69
B PLAY
68
A PLAY
93
B HALF
67
A HALF
77
PB A/B
A TRIG
DRIVE
CAP MOTOR
DRIVE
Q396,397
Q393,394
B TRIG
DRIVE
Q391,392
CAP MOTOR
SPEED CONT
Q395
A TRIG
57
B TRIG
58
CAP M H/L
59
CAP M CONT
60
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
79
TC RELAY
IC401(2/2)
MASTER CONTROL
76
EQ H/N
78
ALC
75
BIAS
74
REC MUTE
73
NR ON/OFF
72
R/PB PAS
71
TC MUTE
70
AMS IN
4
DATA
5
1
2
3
1
2
3
CLK
SURROUND1
SURROUND2
SURROUND3
83
DBFB ON/OFF
DC
BIAS
Q141
+6V
A+12V
84
LINE MUTE
100
STK MUTE
87
RELAY H
82
PROTECT
30
IIC DATA
10
XC IN
11
XC OUT
15
X IN
13
X OUT
32.768kHz
X401
16MHz
X402
BPF 0
BPF 5
P1
P35
G1
G17
FLOURESCENT
INDICATOR TUBE
DISPLAY CONTROL
IC601
F1
F2
LED
DRIVER
Q606-614
D611-615
D617,618
11
FUCTION
KEY
SIRCS
IC603
97 I2C DATA
98 I2CCLOCK
VOL A
1
VOL B
2
SIRCS
100
S601
VOLUME
X601
12.5MHz
+5.6V
REG
Q615
FL601
IC602
50
52
85
.
49
33
20
25
ALL BAND
26
HEADPHONE
3
S617,618
S623-628,630-636
10
10
5
PLAY1-3
EXIST1-3
LED
DRIVER
Q630-635
D630-632
11
GROOVE LED
12
FILE LED
13
BASS SHIFT LED
14
FUNCTION LED
15
REC/PAUSE LED
16
SURROUND LED
LED
DRIVER
Q621-626
LED
DRIVER
Q604
28
POWER LED
POWER
D601
LED
DRIVER
27
TIMER LED
TIMER
SELECT
D602
Q605
17
12
SPEANA
BPF
6
5
4
3
+7V
KEY0
17
FUCTION
KEY
S611-616
S619-622,626,629
KEY1
18
FUCTION
KEY
S637-648
KEY2
19
96 WAKE UP
92 RESET
89
XIN
90
XOUT
MIC 1
J721
MIC
VOL
RV722
IC722
IC722
MIC 2
J722
ECHO
LEVEL
2
6
ECHO
LEVEL
IC721
RV721
29
IIC CLK
18
WAKE UP
7
AC CUT
T971
AC
IN
IN
JW901
S951
TH
MODEL
EXCEPT TH
F974
F975
-V
REG
+5V
REG
Q941
D541
-B
+B
-B
POWER
AMP
D901-904
F1
F2
1
3
+12V
REG
1
3
+9V
REG
1
3
+7V
REG
1
3
CD POWER
SWITCH
+5V
REG
1
3
IC911
Q911,912
IC951
IC921
IC961
IC931
CD D+5V
CD A+5V
RDS D+5V UNSW
AUDIO +5V
A+12V
TC A+12V
MIC A+12V
ST A+12V
TC M+9V
CD M+7V
LED +7V
D906-909
D952
D953
D511
85
CD POWER
RESET
12
Q501
IC501
09
T301
D822
(Page 25)
(Page 26)
F971
RCH
IC104
HCD-VX77/VX77J
28
28
7-3. PRINTED WIRING BOARD – BD SECTION –
• See page 23 for Circuit Boards Location.
Click on the first or last page to see other HCD-VX77J / MHC-VX77 / MHC-VX77J service manuals if exist.