Sony HCD-VX55J / MHC-VX55 / MHC-VX55J Service Manual ▷ View online
HCD-VX55/VX55J
25
25
7-2. BLOCK DIAGRAMS
TUNER/CD SECTION
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
: DIGITAL OUT
FM 75
Ω
G
AM
TM601
ANT IN
1
7
IF OUT
8
OSC OUT
5
VT
FE601
EXCEPT JE MODEL
ANT IN
8
1
IF OUT
3
F OUT
4
VT
FE602
JE MODEL
JR609
R601
R609
+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
(Page 26)
(Page 26)
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
(KSM-213D)
A
B
C
D
E
F
LD
VC
+5V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
16
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
CH1RO
13
CH1FO
14
CH2RO
11
CH2FO
12
CH3RO
18
CH3FO
17
M
M102
SLED
MOTOR
CH4RO
16
CH4FO
15
M
M101
SPINDLE
MOTOR
F-
F+
T-
T+
3
CH1RI
2
CH1FI
6
CH2RI
5
CH2FI
26
CH3RI
27
CH3FI
23
CH4INS
20
STBY2
MDP
25
SFDR
24
SRDR
30
TRDR
32
TFDR
31
FRDR
34
FFDR
33
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
DIGITAL
OUT
OPTICAL
CD
DIITAL OUT
IC201
4
DATA
L-CH
6
CLOK
5
XLAT
3
MUTE
76
SQSO
77
SQCK
7
SENS
27
SSTP
2
XRST
S101
LIMIT
IN SW
IIC DATA
30
IIC CLK
29
XRST
43
DEVICE RST
TBL ADDRESS
SENSOR
49
T SENS
IC711
48
BU UP/DOWN SW
46
OPEN SW
47
CLOSE SW
44
LOAD IN
OPEN/CLOSE
S701
BU UP/
DOWN
S711
45
LOAS OUT
MOTOR
DRIVE
9
7
4
2
M
IC701
TURN
MOTOR
M721
9
STBY1
66
PCMD
67
BCLK
65
LRCK
14
C2PO
71
XTAI
65
XTSL
LEVEL SHIFT
IC501
B
VIDEO
SECTION
(Page 27)
(Page 27)
CD DATA
CD BCK
CD LRCK
C2PO
72
XTAO
C
VIDEO
SECTION
(Page27)
(Page27)
CD MECHA CONT
IC502(1/2)
30
IIC DATA
DSP DATA
95
8
SCLK
15
SCOR
12
XRESET
DSP CLK
5
DSP LATH
97
DSP MUTE
10
SUBQ DATA
36
SUBQ CLK
37
SENSE
1
SENSE CLK
2
SCOR
18
CTRL1
11
LDON
28
LPH
27
29
IIC CLK
E
VIDEO
SECTION
(Page 27)
(Page 27)
384FS
Ver 1.5 2003.11
HCD-VX55/VX55J
26
26
MAIN SECTION
: 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
(Page 25)
(Page 25)
D
VIDEO
SECTION
(Page 27)
(Page 27)
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
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
15
12
11
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
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
CLK
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
S619-621,626,629
KEY1
18
FUCTION
KEY
S637-646
KEY2
19
96 WAKE UP
92 RESET
89
XIN
90
XOUT
MIC 1
J721
MIC
VOL
RV722
IC722
IC722
MIC 2
J722
2
6
ECHO
LEVEL
IC721
RV721
29
IIC CLK
18
WAKE UP
7
AC CUT
T971
AC
IN
F973
JW901
S951
JW972
F971
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
85
CD POWER
RESET
12
Q501
16
T301
D822
1
SURROUND 1
LI
7
10
LO
IN2
34
BP/SR
1
CONT2
2
CONT3
3
SURR AMP
IC102
1
2
IC104
S2
S1
S3
2
SURROUND 2
3
SURROUND 3
S1
S2
S3
VIDEO +5V
3.3V REG
Q531
VIDEO +3.3V
HCD-VX55/VX55J
27
27
VIDEO CD SECTION
CD MECHA CONT
IC502(2/2)
3
RESOLUTION
4
CHROMA LEVEL
26
BGP
32
DATA1 I
31
DATA1 O
22
DF LATH
33
CLK1
25
H SYNC
BUFFER
Q501
20
HINT
45
V SYNC
BUFFER
Q502
21
HSEL
23
HRDY
24
RESET
65
V MUTE
HD OUT
112
HD IN
119
HCK
111
H SYNC
101
V SYNC
93
HINT
114
HSEL
121
HRDY
113
RESET
60
CD DATA
4
CD BCK
3
CD LRCK
5
CD C2PO
6
MPEG VIDEO/AUDIO DEC
VIDEO SIGNAL PROC
IC505
MD
9
MC
8
ML
7
DATA
18
BCK
17
LRCK
19
384FSO
20
MCKO
4
110
DA DATA
11
DA BCK
86
DA XCLK
106
VCK
75
C OUT
DIGITAL FILTER
D/A CONV
IC509
108
DA LRCK
IC104
IC504
27MHz
RSTB
10
14
V OUT L
11
V OUT R
1
XT1
24
XT2
L.P.F
IC101
R-CH
X503
27MHz
D
MAIN
SECTION
(Page 26)
(Page 26)
L-CH
C
CD
SECTION
(Page 25)
(Page 25)
384FS
L.P.F
VIN
1
BGP
5
6
VOUT
C AMP
IC302
TINT
8
VIN
10
CCT
5
1
VOUT
Y AMP
IC303
69
Y OUT
B
CD
SECTION
(Page 25)
(Page 25)
CD DATA/CD BCK/CD LRCK/C2PO
E
CD
SECTION
(Page 25)
(Page 25)
DEVIDE RST
DEVICE RST
77
S VIDEO
OUT
J301
4
3
2
1
Y IN
2
C IN
7
MUTE A
1
MUTE B
8
VIDEO AMP
IC303
15
Y OUT1
9
C OUT
12
MIX OUT1
11
MIX OUT2
14
Y OUT2
VIDEO
OUT
J302
: VIDEO
• Signal Path
: CD
MD0
MD15
54
52
50
48
.
46
58
56
.
.
44
17
19
21
.
23
.
10
15
.
29
.
.
MA0
MA10
16
19
22
26
.
DQ1
DQ16
A0
A8
RAS
14
UCAS
28
LCAS
29
WE
13
DRAM
IC507
DQ1
DQ16
A0
A8
CE
22
MICRO ROM
IC506
12
5
27
.
26
23
.
.
17
21
25
.
4
.
13
15
.
28
29
3
.
.
2
30
.
.
.
42
RAS0
40
CAS
38
MWE
37
MCE
11
10
IC301
C
Y
7
10
31
.
34
.
2
5
.
36
34
16
HCD-VX55/VX55J
28
28
7-3. PRINTED WIRING BOARD BD SECTION
• See page page 23 for Circuit Boards Location.
Ref. No.
Location
IC101
C-6
IC102
B-5
IC103
C-5
IC104
D-2
Q101
D-3
• Semiconductor
Location
1
2
A
B
C
D
3
4
5
6
7
TO
VIDEO BOARD
(Page 42)
(KSM-213D)
Ver 1.5 2003.11
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