Sony HCD-VX550 User manual

HCD-VX550
Chinese Model SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
MICROFILM
HCD-VX550 is the Amplifier, Video
CD player, Tape Deck and Tuner
section in MHC-VX550.
Continued on next page
SPECIFICATIONS
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol aare trade-
marks of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM38LH-5BD36L
Base Unit Name BU-26BD36L
Optical Pick-up Name KSS-213D/Q-RP
Model Name Using Similar Mechanism HTC-V5550
Tape Transport Mechanism Type TCM-230AWR2
CD
Section
Tape deck
Section
Amplifier section
The following measured atAC 120, 220, 240 V 50/60
Hz
DIN power output (rated)110 + 110 W
(8 Ωat 1 kHz, DIN)
Continuous RMS power output (reference)
140 + 140 W
(8 Ωat 1 kHz, 10% THD)
Inputs
MD IN: voltage 450 mV,
(phono jacks) impedance 47 kΩ
VIDEO (AUDIO) IN: voltage 250 mV,
(phono jacks) impedance 47 kΩ
MIC 1/2 (phone jack): sensitivity 1 mV, impedance
10 kΩ
Outputs
MD OUT (phono jacks): voltage 250 mV
impedance 1 kΩ
VIDEO OUT (phono jack):
max,output level
1Vp-p, unbalanced, Sync
negative, load impedance
75 Ω
S-VIDEO OUT (4-pin/ mini-DIN jack):
Y: 1Vp-p, unbalanced,
Sync negative,
C: 0.286Vp-p,
load impedance 75 Ω
PHONES (stereo phone jack):
accepts headphones of 8 Ω
or more
SPEAKER: accepts impedance of 8 to
16 Ω
SUPER WOOFER Voltage 1 V, impedance1
kΩ
SUPERVIDEO CD/VIDEO CD
/CD player section
System Compact disc and digital
audio and video system
Laser Semiconductor laser
(λ=780nm)
Emission duration:
continuous
Laser output Max. 44.6 µW*
*This output is the value
measured at distance of 200
mm from the objective lens
surface on the Optical Pick-up
Block with 7 mm aperture.
Frequency response 2 Hz - 20 kHz (±0.5 dB)
Wavelength 780 -790 nm
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Video color system format
NTSC, PAL

HCD-VX550
2525
7-4. SCHEMATIC DIAGRAM BD BOARD • Refer to page 29 for Waveforms. • Refer to page 45, 46 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD STOP
( ) : CD PLAY
The components identified by
mark !or dotted line with mark
!are critical for safety.
Replace only with part number
specified.
(Page 26)

HCD-VX550
2626
7-5. SCHEMATIC DIAGRAM VIDEO (1/2) BOARD • Refer to page 29 forWaveforms. • Refer to page 52 for IC Pin Function Description. • Refer to page 28 for Printed Wiring Board.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark :VIDEO CD PLAY
(Page 25)
(Page 36)

HCD-VX550
2727
7-6. SCHEMATIC DIAGRAM VIDEO (2/2) BOARD • Refer to page 29 for Waveforms. • Refer to page 54 for IC Pin Function Description. • Refer to page 47 for IC Block Diagram. • Refer to page 28 for Printed Wiring Board.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark :VIDEO CD PLAY
∗: Impossible to measure
IC504
+3.3V REG

HCD-VX550
3131
7-9. SCHEMATIC DIAGRAM CD MOTOR SECTION • Refer to page 46 for IC Block Diagrams.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : CD STOP
DISC TRAY
ADDRESS DETECT
DISC TRAY SLIDE
CLOSE
OPEN
B
(DISC TRAY SLIDE)
DISC IN DETECT
SENSOR DISC TRAY
SENSOR
DISC
TRAY
TURN
DISC TRAY TURN
MOTOR DRIVER
LEVEL SHIFT
C
16
(Page 36)
(Page 36)

HCD-VX550
3333
• Voltages are dc with respect to ground under no-signal
conditions.
no mark :TAPE PLAY
( ) : RECORD
PB LEVEL (L)
(DECK A)
PB LEVEL (R)
(DECK A)
PB LEVEL (L)
(DECK B)
PB LEVEL (R)
(DECK B)
PB EQ AMP
(DECK A)
PB EQ AMP
(DECK B)
SWITCHING
REC BIAS (L)
(DECK B)
REC BIAS (R)
(DECK B)
BIAS OSC
REC BIAS
-6.8
(PLAYBACK)
D
16
(Page 38)
7-11. SCHEMATIC DIAGRAM AUDIO BOARD • Refer to page 48 for IC Block Diagram.
The components identified by
mark !or dotted line with mark
!are critical for safety.
Replace only with part number
specified.

HCD-VX550
3434
DECK B
PLUNGER DECK A PLUNGER
(CAPSTAN)
(DECK A 120/70)
(DECK A HALF)
(DECK A REC)
(DECK B HALF)
(DECK B REC)
(DECK B 120/70)
ROTATION DETECT SENSOR
(DECK A)
ROTATION DETECT
SENSOR (DECK B)
(DECK A PLAY) (DECK B PLAY)
E
CONTROL SWITCH
(Page 38)
16
7-12. PRINTED WIRING BOARD LEAF SW BOARD • Refer to page 23 for Circuit Boards Location.
7-13. SCHEMATIC DIAGRAM LEAF SW BOARD
• Voltages are dc with respect to ground under no-signal
conditions.
no mark :TAPE PLAY
( ) : RECORD
∗: Impossible to measure
Ref. No. LocationRef. No. Location
• Semiconductor Location
D141 E-10
D191 D-12
D331 E-1
D333 F-1
D334 E-1
D335 F-1
D401 G-11
D403 F-12
D405 H-6
D406 I-4
D407 I-2
D411 G-1
D501 D-7
D502 E-6
D503 D-6
D504 D-7
D505 D-7
D506 D-7
D507 E-6
D509 F-2
D607 E-5
D644 C-8
D801 I-11
D802 G-9
D803 G-11
D831 I-6
D832 I-7
D851 I-10
D852 G-9
D881 H-9
D901 I-4
D902 I-4
D903 I-4
D904 I-4
D905 I-1
D906 H-1
D907 I-5
D908 I-5
D909 I-5
D910 I-5
D915 I-4
D917 F-4
D919 H-3
D921 H-4
D922 G-4
D923 G-4
D924 F-2
IC101 C-10
IC301 B-3
IC381 A-12
IC501 D-5
IC502 D-7
IC801 H-10
IC901 G-6
IC902 G-4
IC903 H-4
IC904 H-3
Q111 D-10
Q112 D-10
Q113 E-9
Q161 C-9
Q162 C-9
Q163 E-9
Q191 D-12
Q192 E-10
Q201 D-9
Q251 C-9
Q331 C-1
Q332 C-2
Q333 C-2
Q334 C-2
Q335 D-1
Q336 F-1
Q337 F-1
Q338 F-1
Q339 F-1
Q340 E-1
Q341 E-1
Q342 F-1
Q343 E-1
Q401 F-12
Q402 E-12
Q411 G-1
Q412 G-1
Q431 G-12
Q432 G-11
Q433 F-11
Q434 F-11
Q435 F-11
Q436 F-11
Q437 G-12
Q439 F-12
Q471 F-2
Q501 D-7
Q508 D-7
Q509 E-7
Q801 H-10
Q803 G-10
Q804 G-9
Q831 G-10
Q832 G-10
Q851 I-10
Q881 I-9
Q901 H-2
Q902 I-1
Q903 H-1
Q904 G-4
Q905 G-4
Q909 I-4
Q911 G-3
Q912 G-4
Q913 H-1
Q914 G-2
Q923 H-1
Q951 G-2
Q952 H-1
16
DECK A
PLUNGER
DECK B
PLUNGER
(DECK A PLAY)
(DECK A HALF) (DECK A 120/70) (DECK A REC)
(DECK B HALF)
(DECK B PLAY)
(DECK B 120/70)
(DECK B REC)
12
12
E
4
12
34
12
3
()
(Page 35)

HCD-VX550
3636
7-15. SCHEMATIC DIAGRAM MAIN (1/4) BOARD • Refer to page 35 for Printed Wiring Board.
(Page 38)
16
(Page 39)
(Page 37)
(Page 44)
(Page 26)
(Page 31)
(Page 31)
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark :TUNER (FM/AM)
( ) : CD PLAY

HCD-VX550
3737
7-16. SCHEMATIC DIAGRAM MAIN (2/4) BOARD • Refer to page 35 for Printed Wiring Board.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark :TUNER (FM/AM)
16
(Page 38)
(Page 39)
(Page 43)
(Page 36)
D3001
11ES2 D3002
11ES2
The components identified by
mark !or dotted line with mark
!are critical for safety.
Replace only with part number
specified.

HCD-VX550
3838
7-17. SCHEMATIC DIAGRAM MAIN (3/4) BOARD • Refer to page 35 for Printed Wiring Board.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark :TUNER (FM/AM)
( ) : CD PLAY
{} : PLAYBACK (DECK A)
[ ] : PLAYBACK (DECK B)
〈〈 〉〉 : RECORD
CN371
15P
16
(Page 34)
(Page 39)
(Page 41)
(Page 43)
(Page 39)
(Page 37)
(Page 36)
(Page 33)

HCD-VX550
3939
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark :TUNER (FM/AM)
( ) : CD PLAY
{} : PLAYBACK (DECK A)
[ ] : PLAYBACK (DECK B)
〈〈 〉〉 : RECORD
7-18. SCHEMATIC DIAGRAM MAIN (4/4) BOARD • Refer to page 35 for Printed Wiring Board. • Refer to page 49 for IC Pin Function Description.
CD POWER
D+5V
GND
VDD
L
(Page 38)
(Page 42)
(Page 37)
(Page 36)
(Page 38)

HCD-VX550
4141
7-20. SCHEMATIC DIAGRAM PANEL BOARD • Refer to page 48 for IC Block Diagrams. • Refer to page 58 for IC Pin Function Description.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark :TUNER (FM/AM)
16
(Page 38)
(Page 42)

HCD-VX550
4242
7-21. PRINTED WIRING BOARD CD SW/5V POWER BOARD
• Refer to page 23 for Circuit Boards Location. 7-22. SCHEMATIC DIAGRAM CD SW/5V POWER BOARD
16 27
(Page 40)
(Page 35)
16
(Page 41)
(Page 39) 7.3
4.7 7.3 5.0
9.3 8.1

HCD-VX550
4343
7-23. PRINTED WIRING BOARD TRANSFORMER BOARD • Refer to page 23 for Circuit Boards Location.
7-24. SCHEMATIC DIAGRAM TRANSFORMER BOARD
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : TUNER (FM/AM)
• Semiconductor
Location
Ref. No. Location
D971 A-2
D972 A-1
D973 A-1
Q971 A-1
27
16
(Page 35)
(Page 35)
16
(Page 38)
(Page 37)
The components identified by
mark !or dotted line with mark
!are critical for safety.
Replace only with part number
specified.

HCD-VX550
4444
7-25. PRINTED WIRING BOARD SURROUND BOARD
• Refer to page 23 for Circuit Boards Location. 7-26. SCHEMATIC DIAGRAM SURROUND BOARD • Refer to page 47 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark :TUNER (FM/AM)
16
(Page 35)
16
(Page 36)

45
7-27. IC BLOCK DIAGRAMS
DOUT
LRCK
PCMD
BCK
DVDD2
ASYE
MD2
EMPH
XTSL
DVSS2
XTAI
XTAO
SQSO
SQCK
SCSY
SBSO
EXCK
SOUT
SOCK
XOLT
SE
TE
VC
TES1
TEST1
DVSS1
FRDR
FFDR
TRDR
TFDR
SRDR
SFDR
DVDD1
FSTO
SSTP
MDP
LOCK
PWMI
FOK
DFCT
DIGITAL
CLV
PROCESSOR
OSC
DIGITAL
OUT
EFM
DEMODULATOR
32K
RAM ERROR
CORRECTOR
D/A DIGITAL
INTERFACE
MIRR, DFCT,
FOK
DETECTOR
CPU
INTERFACE
SUBCODE
PROCESSOR
SERVO
AUTO
SEQUENCER
SERVO INTERFACE
DVDD0
XRST
MUTE
DATA
XLAT
CLOK SENS
SCLK
ATSK
WFCK
XUGF
XPCK
GFS
C2PO
SCOR
C4M
WDCK
DVSS0
COUT MIRR
AVDD0 IGEN AVSS0 ADIO RFDC CE TE AVSS1 RFAC ASYI ASYO BIAS AVDD1 PCO FILI FILO CLTV V16M VCTL VPCO
59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
OPERATIONAL
AMPLIFIER &
ANALOG SWITCH
A/D
CONVERTER
FOCUS
PWM
GENERATOR
TRACKING
PWM
GENERATOR
SLED
PWM
GENERATOR
FOCUS
SERVO
DSP
TRACKING
SERVO
DSP
SLED
SERVO
DSP
ASYMMETRY
CORRECTOR
DIGITAL
PLL
CLOCK
GENERATOR
60
BD Board
IC101 CXD3008Q

46
IC103 CXA2568M-T6
APC PD AMP
APC LD AMP
RF SUMMING AMP RF EQ AMP
FOCUS ERROR AMP
TRACKING
ERROR AMP
VC BUFFER
VCC
50µA
VEE
VEE
VC
VC
VC
VC
VC
VC VC VC
VC
VC
VCC
VEE
VCC
VEE
VEE
VC
VCC
LC/PD
LD ON
HOLD SW
AGC CONT
RFTC
RF I
RF O
RFE
TE
FE
RF BOT
HOLD
AGC VTH
LD
PD
A
B
C
D
VEE
F
E
VC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
+
–
+
–
+
–
+
–
+
–
+
–
+
–
VCC
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
MOTOR (TURN) BOARD
IC701 M54641L
REG
CONTROL
INPUT
AMP.
INPUT
AMP.
1
2
3
45
6
7
8
POWER AMP.
POWER AMP.
VCC
OUT1
IN2
REFERENCE
GND
IN1
OUT2
VCC
MOTOR (SLIDE) BOARD
IC801 BA6286N
POWER
SAVE
CONTROL
LOGIC
TSD
1
2
3
4
5
6
7
8
9
10
GND
RIN
VREF
OUT2
RNF
GND
OUT1
VM
VCC
FIN

47
VIDEO BOARD
IC509 PCM1727E-2/T2
SURROUND BOARD
IC1201 LV1150
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
POWER
SUPPLY
CLOCK MANAGER
•
DUAL PLL
AUDIO
DATA INPUT
INTERFACE
8 TIME OVER
SAMPLING DIGITAL
FILTER
•
FUNCTION
CONTROL
MODE
CONTROL
MULTI LEVEL
∆Σ
MODULATOR
MULTI LEVEL
∆Σ
MODULATOR
5 LEVEL
DAC 5 LEVEL DAC
CR LPF
•
OUTPUT
AMP
CR LPF
•
OUTPUT
AMP
BPZ
CONTROL
13
OPEN
XT1
PGND
VCP
NCKO
RSV
SCKO3
ML
MC
MC
RSTB
VOUTR
AGND VCA
ZERO
BCK
DATA
LRCK
SCKO2
SCKO1
VDD
DGND
XT2
384fs
15
14 VOUTL
CAP
L–R
L+DELAY
L+R
LOW-PASS
FILTER VIRTUAL
ADM
ADM-CONT S-RAMOSC
VSS
SW1 SW2
LPF1 LPF2
LS-CUT
R-PS-IN
VCC
L-PS-IN
RS-OUT
L-IN
R-IN
LC-INE LC-INB VDD A/D NS D/A DC-CUT AGND VREF EF-VOL L-OUT R-OUT
24 23 22 21 20 19 18 17 16 15 14 13
11 124321 5 6 7 8 9 10
+
+
R+DELAY
+
–

48
AUDIO BOARD
IC602 µPC1330HA
1234567 8 9
INVERTER
COMPARATER
SW R1 GND SW P1 CONT GND VCC SW P2 GND SW R2
PANEL BOARD
IC603 BA3830F
F01
R02
R01
LINE NF
LINE IN
REFERENCE
CURRENT
REFERENCE
CURRENT
RESET
BAND
PASS
FILTER DET
17
RESET
18
F02
16 F03
15 F04
14 F05
13 F06
12
REC LEVEL
11
VCC
10
4
3
2
1
+
–
REC NF
REC IN 6
RESET C 7
BIAS C 8
GND 9
5
+
–
IC604 NJU3716M-T2
OUTPUT CIRCUIT
LATCH CIRCUIT
SHIFT REGISTER
CONTROL
CIRCUIT
2021 192324 22 18 17 16 15 14 13
43
21 6
P7 P8 P9
P10 P11
VSS
P12 P13 P14 P15 P16
7
SO
8910 11 125
VDD P6 P5 P4 P3 P2 VSS P1 CLR STB CLK DATA
IC711 M65850FP
OSCILLATOR
1/2 VCC
AUTO
RESET
LPF1
MAIN
CONTROL
A/D
20KBIT
SRAM
LPF2
D/A
12 3 45 6 7
891014 13 12 11
CLOCK
RESET MO
MI
D1 DO0
DO1
VCC CLOCK REF OP2IN OP2OUT LPF2IN LPF2OUT
LPF1IN
LPF1OUT
OP1OUT
OP1IN
CC1 CC2
GND