Sony HCD-VX550 / MHC-VX550 Service Manual ▷ View online
HCD-VX550
21
21
MAIN SECTION
DBFB CONTROL
SWITCH
Q111
BASS FREQUENCY
CONTROL SWITCH
Q201
RESET SIGNAL
GENERATOR
IC502
POWER AMP
IC801
CD-L
J101 (1/2)
E
(Page 19)
(Page 20)
G
(Page 20)
(Page 22)
PB-L
F
SPEANA
H
R-CH
R-CH
R-CH
16
FM/AM TUNER UNIT
VOLUME
CONTROL
CPU
INTERFACE
BASS BOOST
CONTROL
CIRCUIT
INPUT
SELECT
SWITCH
SOUND
CONTROL
CIRCUIT
L+R/L–R
MATRIX
CIRCUIT
ADM
L.P.F.
OSC
OSC
S-RAM
L/R+DELAY
CIRCUIT
EFFECT/
BYPASS
GRAPHIC EQUALIZER
CONTROL CIRCUIT
R-CH
R-CH
R-CH
R-CH
L-IN
FEED BACK
SWITCH
Q112
R-CH
COMMAND
F OUT2
BUF
OUT2
VOL
IN2
IN2
+
+
R-CH
R-CH
R-CH
R-CH
D141
R-CH
+
+
MIC LEVEL
RV712
ECHO
LEVEL
RV711
MIC AMP
IC712 (2/2)
MUTING
Q113
OVER LOAD
DETECT
Q801
TEMPERATURE
DETECT SWITCH
Q831, 832
DC DETECT
SWITCH
Q433, 434
RESET SWITCH
Q501
RELAY
DRIVE
Q431
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IC101
SURROUND
PROCESSOR
IC1201
IN E2
IN D2
IN B2
IN A2
IN C2
IN A2
IN C2
KEY IN2
VC L+R/L–R
KEY IN1
KEY OUT 2
KEY OUT 1
L+R
DATA
CLOCK
LATCH
493-DATA
493-CLK
493-LATCH
DBFB-H/L
BASS FREQ.
PROTECTOR
XC-OUT
X613
16MHz
X601
32.768kHz
XC-IN
X-OUT
X-IN
BB B2,
BB A2
MIC IN
SUPER
WOOFER
REC A2
REC-L
D191
REC B2
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
: RECORD
: TUNER (FM/AM)
: MIC INPUT
TH831
+5V
R-CH
+
R-CH
R-CH
M501
(FAN)
(FAN)
R-CH
–1
–2
+
MUTING
Q191
MUTING
Q411, 471
FAN MOTOR
DRIVE
Q401, 402
PROTECT
SWITCH
Q192
R-CH
R-CH
OVER LOAD
DETECT SWITCH
Q432
PROTECT SWITCH
Q439
PROTECT SWITCH
Q435, 436
OVER LOAD
DETECT SWITCH
Q437
STANDBY SWITCH
Q803, 804, 881
MUTING CONTROL
SWITCH
Q508, 509
MUTING CONTROL
SWITCH
Q412
J701
PHONES
TM401
SPEAKER
IMPEDANCE
USE 8 – 16
Ω
J711
MIC 2
J712
MIC 1
L
L
R
R
VIDEO
(AUDIO) IN
MD IN
J101 (2/2)
L
R
MD OUT
J191
SUPER WOOFER
ANTENNA
ST-L
FM ANT
FM ANT
AM ANT
AM ANT
ST-R
ST-MUTE
STEREO
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-CE
ST-MUTE
STEREO
TUNED
STEREO
TUNED
ST-DOUT
ST-DIN
ST-CLK
ST-CLK
ST-CE
FM
75
Ω
AM
38, 39
D607
D644
D803
RY401
+
–
–
+
SYSTEM CONTROLLER
IC501 (3/4)
+
MIC AMP
IC712 (1/2)
DIGITAL ECHO
IC711
(Page 22)
RESET
I
27
F-RELAY
3
11
10
13
15
7
44
STK-MUTE
1
LINE-MUTE
RESET
6
12
AC-CUT 22
RY-SW 36
47
48
38
60 5
59
6
2
58
57
42
41
72
36
34
BUF IN2
37
32
33
49
50
51
54
53
52
55
65
66
68
69
67
M
L
R
30
+
11
L+R/L–R
LC-INE
LC-INB
3
40
23 24
L-OUT
14
HCD-VX550
22
22
DISPLAY/KEY CONTROL/POWER SUPPLY SECTION
REGULATOR
CONTROL SWITCH
Q903, 923
D501, 502
+7V
REGULATOR
IC901
–26V
(FL DRIVER (IC601) B–)
+12V
REGULATOR
IC903
+10V
REGULATOR
Q909
–7V
REGULATOR
Q914, 951, 952
+7V
REGULATOR
Q901, 902, 913
ST +10V
(FM/AM TUNER UNIT B+)
TC M+12V
(TC MOTOR SECTION B+)
CD M+12V
(CD MOTOR SECTION B+)
CD M+7V
(CD MOTOR SECTION B+)
B+ SWITCH
Q911, 912
D507
B+ SWITCH
Q904, 905
+5V
REGULATOR
IC902
+5V
REGULATOR
IC904
+3.3V
REGULATOR
IC504
RECT
D907 – 910
RECT
D901 – 904
POWER AMP (IC801),
PROTECTOR CIRCUIT
PROTECTOR CIRCUIT
POWER TRANSFORMER
T951
RECT
D832
D832
RECT
D831
D831
RECT
D971
D971
–26V REGULATOR
Q971
AC IN
A+7V
TC, PANEL,
AUDIO
A–7V
FAN MOTOR B–
VF1
TO FLUORESCENT
INDICATOR TUBE
(FL601)
VF2
+VL
–VL
+VH
–VH
REMOTE CONTROL
RECEIVER
IC602
GRID DRIVE
Q607 – 612
FLUORESCENT INDICATOR TUBE DRIVER,
KEY CONTROL
IC601
SYSTEM CONTROLLER
IC501 (4/4)
LED DRIVER
IC604
BAND-PASS FILTER
IC603
Q603
+5V (LED)
S LOW FREQ (BPF0)
18
BPF2
19
BPF3
20
BPF4
GRID DRIVE
Q613
DET
DET
B.P.F.
21
ALL BAND (L+R)
REC IN
LINE
IN
1
SIRCS
ROTARY
ENCODER
S601
ROTARY
ENCODER
S602
2
JOG-A
9
VOL-A
8
JOG-B
10
72
70
VOL-B
XOUT
XIN
B+ SWITCH
Q601, 602
LED DRIVE
Q606
KEY0 – KEY3
BPF1
F01
F04
F05
F06
F05
F06
F02
G1
(Page 21)
(Page 21)
H
(Page 19)
D
D611 – 624,
D627 – 631,
D627 – 631,
D751 – 753
SPEANA
L SEL
7
TIMER LED 26
LED DATA
5
LED SCK
3
LED LAT
DATA
CLK
4
13
14
15
45
I2C DATA
DATA, CLK
I2C CLK
IIC-DATA
IIC-CLK
RESET
RESET
17
79
78
29
WAKE UP
WAKE UP
22
18
30
CD-POWER
5
POWER
2
73
16
14
13
12
L+R
11
16
17
4
6
11 – 14
S1 – S22
46 – 67
G13 – G18
32 – 27
G2 – G12
44 – 42, 40 – 33
17, 19 – 23, 1 – 3, 5, 7, 10, 11
P1 – P9, P11, P12, P15, P16
S601
(JOG DIAL)
S611 – 630, 632 – 635,
S638 – 651, 751 – 757
16
S602
VOLUME
X601
12.5MHz
I
STB
LED DRIVE
Q604, 605
STBY LED 39
D632
TIMER SELECT
D754
I/u
A+5V (SW)
D/A CONVERTER (IC509),
VIDEO AMP CIRCUIT B+
+3.3V
MPEG VIDEO/AUDIO
DECODER (IC506) B+
D+5V (SW)
CD SERVO/VIDEO CD
SECTION B+
D+5V (SW)
M62493FP (IC101),
CD SENSOR CIRCUIT B+
+5V
SYSTEM CONTROLLER
(IC501) B+
+5V
CD MECHANISM
CONTROLLER (IC505) B+
D923
D405 – 407
D+5V (UNSW)
(TAPE DECK SECTION B+)
+5V (STBY)
(PANEL SECTION B+)
+5V (LED)
(PANEL SECTION B+)
D509
D922
D924
FLUORESCENT INDICATOR TUBE
FL601
+5V
REGULATOR
IC101
HCD-VX550
23
23
7-2. CIRCUIT BOARD LOCATION
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
•
p
: parts mounted on the conductor side.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
•
Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
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.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
• Signal path.
F
: TUNER (FM/AM)
E
: PLAYBACK (DECK A)
d
: PLAYBACK (DECK B)
G
: RECORD
L
: CD PLAY (VIDEO)
J
: CD PLAY (AUDIO)
c
: DIGITAL OUT
N
: MIC INPUT
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
CD SW board
TRANS board
MAIN board
PANEL board
TUNER (FM/AM)
SURROUND board
VIDEO board
5V POWER board
CONNECTOR board
SENSOR board
MOTOR (TURN) board
MOTOR (SLIDE) board
LEAF SW board
AUDIO board
BD board
The components identified by
mark
mark
!
or dotted line with mark
!
are critical for safety.
Replace only with part number
specified.
specified.
HCD-VX550
24
24
7-3. PRINTED WIRING BOARD BD BOARD
• Refer to page 23 for Circuit Boards Location.
(Page 28)
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