Sony Vx8 Owners Manual

							HCD-VX8/VX8J
Ð 23 ÐÐ 24 Ð
Ð DECK SECTION Ð
IC611
R CH HP101
PB HEAD
(DECK A)L
R
RV311
PLAYBACK
LEVEL
DECK A
IC601
R CH L
R
RV301
PLAYBACK
LEVEL
DECK B
31IC602
4
REC/PB
EQOUT
REC BIAS
BIAS OSC
T621, Q621, 622
ERASE HEADERASE BIAS
4648B INA IN
16
PB-A/B
EQIN
38
36
RV301
REC LEVEL
39
RECOUT
BIAS SW
C
M
70
120
DOLBY
TYPE B
+7.5V
Q623
RIN
44
PB
241820224025 PB OUT
LM ON/ 
OFF
BIAS ON/OFFRM ON/OFF
  ALC ON/OFF
PB L
REC L PB A/BNORM/HIGHREC/PB/PASSBIAS ON/OFFRM ON/OFF
15
ALC ON/OFFRELAY
09
BMAIN
SECTION LM ON/OFF
NORM/
HIGH
PAS
DOL
PR REC/PB HEAD
(DECK B)
XDOLBY NR
   IC301DOLBY NR
HRPE101
RV341
REC
BIAS
3233
23
NR ON/
OFF
NR ON/OFF
17 S1004
A CrO
2 S1008
B CrO
2 
19
A 120/70B 120/70
M
CAP MOTOR
 CONTROL
  Q336-343SPEED
CONTROL
Q1001
SWITCH
Q335
RV1001HIGH
SPEED
RV1002 
NORMAL
SPEED M1
CAPSTAN
MOTORCAPM CNT2
CAP M H / L CAPM CNT1
REEL
DETECT
IC1001
A SHUT
B SHUT REEL
DETECT
IC1002
S1001 (A PLAY)
+5V
S1002 (B PLAY)A PLAY
B PLAY
A HALF
B HALF/REC A/REC B S1003
(A HALF)
+5V+5V
S1005
(REC A)
S1006
(B HALF)
S1009
(REC B)
(Page 25)
• R CH : Same as L ch
• SIGNAL PATH
          : PB (DECK A)   
          : PB (DECK B)
          : REC (DECK B)
28
2726
MS
MS OUTB TRIG
A TRIG TRIGGER
 MOTOR
CONTROL
Q331-334
  A DECK/
  B DECK
PLUNGER • PLUNGER SOLENOID is supplied 
as the MECHANICAL BLOCK ASSY.
MAIN SECTION
MAIN SECTION 
						

							HCD-VX8/VX8JÐ MAIN SECTION Ð
Ð 25 Ð
Ð 26 Ð
MUTE
Q191
DBFB SPE SIG
IIC DATA
IIC CLK
RESET
FRONT
F RELAY
CD POWER
STK MUTE
314
11
5960
34
9140100
90
89
88
87
86
84
83
D503RESET
SWITCH
Q501
RESET
IC502
+5.6V
1315
X613
16MHz
12221011
09
51 CD POWER
STK MUTE 48
54
50
51
52
49ST DIN
STEREO
TUNED
ST CE
ST CLKST MUTE
ST DOUT L+R/L-R
TC RELAY
TC MUTE A PLAY SW
B PLAY SW
65
19
61
57
56
59
37
35
60
33
32
58TBL L
TBL R
SCOR
T SENS
HOLD
SENS
XRST
CD CLK
CD DATA
DISC SENS
SQ CLK
SQ DATA
XLT7
6 DBFB H/L
LINE MUTE
30
29 IIC DATA
IIC CLK
RESET
AC CUT
(CHECK)
X-OUT
X-IN
XC-IN
XC-OUTX601
32.768KHz MASTER CONTROL
IC501
3
F RELAY
WAKE UP
ST-BY LED/CLOCK OUT
RDS DATA
RDS INT
82
81
80
79
76
73
72PB A/B
R/PB PASS BIAS
REC MUTE
NR ON/OFF A SHUT
B SHUT
B HALF
A HALF
EQ H//N
CAP M H/L CAPM CNT1
CAPM CNT2 CAPM CNT1
CAPM CNT2
A TRG
B TRG
AMS IN
493-LAT
493-DATA
493-CLK
RELAY DJ-SIG
DJ-MUTE
ST L
RDS INT RDS DATA
ST-DOUT
ST-CLKST-DIN
STEREO
TUNED
ST CE
ST-MUTE
L CH
TBL. L
TBL. R
SCOR
TRAY SENS
HOLD
SENS
X RST
CD CLK
CD DATA
DISC SENS
SQ CLK
SQ DATA
X LAT
BDECK
SECTIONCCD
SECTION
A SHUTPB L
   REC L
BIAS ON/OFFB SHUT
RM ON/OFFLM ON/OFFREC/PB PASS
B HALF/REC A/REC B
A HALF
A PLAY
B PLAY
PB A / B
NORM/HIGHNR ON/OFFCAP M H/L
A TRG
B TRG
           MS OUT
38
31
2
(Page 24)
(Page 20)
FDISPLAY
SECTION(Page 30)
POWER ON/OFF
2       POWER
DPOWER
SECTION
53
55
• R CH: Same as L ch
• SIGNAL PATH
            : FM
            : CD
            : PB
            : REC
            : VIDEO/MD       
• Abbreviation
  EA : Saudi Arabia model.
MD IN LVIDEO/IN
(AUDIO)
     L
      MD/VIDEO
(AUDIO)
 OUT L
    
      
71
70
69
68
67
66OUT OPEN
ENC1
ENC2/DISC-LED
ENC3/UP-SW
LOAD IN
LOAD OUT OUT-OPEN
ENC-1
ENC-2
ENC-3
LD IN
LD OUT
J101
(Page 27)
EDISPLAY
SECTION(Page 29)
68
69
66
67
65
1    2    3230
42
58
57
41
36
3839
72
MUTE
Q113
 SUPER
WOOFERJ191
MUTE
Q181
29
LPF 1 IN       LPF 2 OUT
ECHO
LEVEL
MIC
LEVELECHO PROCESSOR
          IC711
L-R L+R L-OUT
L-IN
MIX
MICRV712
J711
63
47
21
20 78
77 75
74
8518
39
   DBFB
 SWITCH
Q111,112
    
33 32R-CHR-CH
 EQ
AMP
SELECT
SWITCH
  MICON
INTERFACE IC712(1/2)
IC712(2/2)
IC181(1/2)IC181(2/2)
VOLUME
IC101(2/2)       EQ
IC101(1/2)
V
TC
TU
CD MD
Lch
Lch
37
44
BASS FRQ.
Q201
MUTE
Q192
MUTE SW
Q509
MUTE SW
Q508
TIMER LED
26RY-SW
36FL SW
42
STBY RELAY
43PROTECTOR
27PROTECTOR RY-SW
13WAKE UP
STANDBY LED
TIMER LED
91
ALC   ALC ON/OFF
FM/AM TUNER
TUNER UNIT IS
SUPPLED AS THE
ASSEMBLED
BLOCK
IC1201
SURROUND
EA 
						

							HCD-VX8/VX8J
Ð 27 ÐÐ 28 Ð
Ð POWER SECTION Ð
• R CH : Same as L ch
• SIGNAL PATH
          : FM
• Abbreviation
  EA
  SP
  MY
  HK
  TW 
  IA : Saudi Arabia model.
: Singapore model.
: Malaysia model.
: Hong Kong model.
: Taiwan model.
: Indonesia model.
Rch
Rch
PROTECT
CONTROL
Q432 - 434RY401
THERMAL
DET
Q831, 832
THP831OVER LOAD
DET
Q801
Rch POWER AMP
IC801
FRONT F RELAY
DBFB
STK MUTE
E,EA,MY,SP,HK,TW,IA
16
18
14
PHONESJ701
Rch
FRONT
FRONT
SPEAKERTM401SURROUND
SPEAKERTM402
Rch
FAN MOTOR
DRIVER
Q401, 402
M
UNREG
–7VM901
FAN
MOTOR
RELAY
DRIVE
Q435, 436, 431
MUTE
SWITCH
Q412, 411
VOLTAGE
SELECTOR
S951
VF
VFT951
POWER TRANSFORMER
MAIN
SECTIOND09
(Page 26)
VH+
SWITCH
Q437
MUTE
SWITCH
Q439
Lch
VH+ SUPP
Q803, 881
MUTE
SWITCH
Q804 VH+
RY-SWCD POWERD+5V UNSW
POWER ON/OFFPROTECTOR
AC4
AC4
RECT
D907-910
AC3
AC3
RECT
D901-904
IC901
+7V REG CD MOTOR +7V
ST+10V
3
1
3
1
+10V REG
Q909
TC MOTOR +12V
A+7V
A–7V
3
1
–7V REG
Q951,952,914+7V REG
Q901,902,913
+5V OUT
Q905,D923RECTIFIER
D924RECTIFIER
D922
D+5VSW +5V (LED)
(DISPLAY) +5V (STBY)
(DISPLAY) +5.6V (STBY)RDS D+5V UN SW
AC1
AC1
RECT
D832RECT
D831
AC2
AC2
–VL +VL +VH
–VH
IC904
REG
3
1
+5V OUT
Q911RECTIFIER
D925
SWITCH
Q923, 903SWITCH
Q904
SWITCH
Q908+5V REG
Q907
SWITCH
Q912
CD A+5V (SW) CD D+5V (SW)
RECTIFIER
D507
D509
JW51
AC
IN
IC903
+12V REGIC902
REG
Lch 
						

							HCD-VX8/VX8JÐ DISPLAY SECTION Ð
Ð 29 ÐÐ 30 Ð
X601
12.5MHz
33 - 40, 42 - 44 46 - 67
FL601
FLUORESCENT INDICATOR TUBE
VF 72
70XOUT
LINE IN XIN11
14
KEY 0
KEY 3JOG A
JOG B
2
8
       
SIRCS  L SEL
1
DISPLAY CONTROL
IC601 I
2C DATA
I2C CLK       78
79
73
RESET
LED
SWITCH
PANEL LED
REMOTE
CONTROL
RECEIVER
IC602LED
CONTROL
Q603
DJ MUTE
DJ SIG ROTARY
ENCODER
KEY
MATRIX
+5V (LED)
SEG1-SEG22GR2-GR12
9
10 VOL A
VOL B
ROTARY
ENCODER
VOLUMES602S601
(JOG)
Q601,602
16
17
18
19 S LOW (F01)
BPF1 (F02)
BPF2
BPF3
BPF4
09    SPE SIGIIC DATA
IIC CLK
 RESET
 X602
  4.09MHzE MAIN
SECTION
(Page 26)
F MAIN
SECTION
721
ALL B (L+R)
(Page 25)
417
16
14
13
12
S LOW
BPF1
BPF2
BPF3
BPF4
ALLB
SD
A.OUTSISTCH
XT XT BUSY
23
SOUND MIX
IC605
  MUTE
SWITCH
  Q851
14 15
8
16
20
23
 F01
 F02
 F04
 F05
 F06
L+R SPEANA BPF FILTER
IC603
REC IN6
11
STANDBY LED
D804
ECO
TIMER LED
D635
LED SWITCH
Q605
+5V (LED)
TIMER SELECT
27 - 32, 45 GR1, GR13-GR18IND BUFF
Q610-616
VF
6
74 PAD LA
CH for PAD75
Busy for PAD
22
GRADATION R/WAKE UP
WAKE UP
20
LED LA
L/P DAT
4
53
L/P SCK
13
15
1|5
•
7|11
•
17
•
19|23 IC604
GRADATION L
15
LED SWITCH
Q607LED SWITCH
Q608D637RIGHT
D638
LEFT
+5V (LED) 
						

							HCD-VX8/VX8J
Ð 31 ÐÐ 32 Ð
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.Note:
¥ All capacitors are in µF unless otherwise noted.  pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
¥ All resistors are in W and 
1/4
 W or less unless otherwise
specified.
¥
¢
: internal component.
¥2: nonflammable resistor.
¥1: fusible resistor.
¥C: panel designation.
For printed wiring boards.Note:
¥X: parts extracted from the component side.
¥Y: parts extracted from the conductor side.
¥
p
: parts mounted on the conductor side.
¥
¨
: Through hole.
¥b: Pattern from the side which enables seeing.
(The other layers patterns are not indicated.) ¥U: B+ Line.
¥V: BÐ Line.
¥H: adjustment for repair.
¥ Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
¥ Voltages are taken with a VOM (Input impedance 10 MW).
Voltage variations may be noted due to normal produc-
tion tolerances.
¥ Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
¥ Circled numbers refer to waveforms.
¥ Signal path.
F: FM
g: VIDEO/MD
E: PB (DECK A)
d: PB (DECK B)
G: REC (DECK B)
m: CHROMA
n: Y
o: VIDEO
J: CD
c: digital out
¥ Abbreviation
EA : Saudi Arabia model.
SP : Singapore model.
MY : Malaysia model.
HK : Hong Kong model.
TW : Taiwan  model.
IA : Indonesian model.
TH : Thai  model.
IC101 @° MDP
1
2
3
4 WAVEFORMS
Ð CD SECTION Ð
IC101 %¼ RFAC
IC101 $Á TE
IC101 #» FE
Note:The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.¥ Indication of transistor
C
These are omitted E B
1.3Vp-p
APPROX 500mVp-p2.5VAPPROX 200mVp-p2.5V
2.6Vp-p
7.5msec
1
2
3
IC505 &° COUT
IC505 ^» YOUT
4
567
8
9
IC509 !¦ BCLK IC509 !» LRCK
0
!Á
!ª
IC502 !£ XOUT
4Vp-p
10MHz
IC401 7 COUT
IC401 1 YOUT
J302 VOUTIC509 1 XT1
27MHz
5.8Vp-p4.6Vp-p
44.1kHz4.8Vp-p
2.11MHz
IC504 8 384FS
4.8Vp-p
33.8MHz
IC504 6 27M
3.8Vp-p
27MHz2.8Vp-p
33.8MHz
IC504 !ª
Ð VIDEO SECTION Ð
Caution:
Pattern  face  side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts  face  side: Parts on the parts face side seen from the
(Side A) par ts face are indicated.
Q C
These are omitte
d
E B
H
1Vp-p
Ð  PANEL (2/3) SECTION Ð1
2
IC501 !Á XC-OUT
IC501 !£ X-OUT
Ð  MAIN (3/4) SECTION Ð
IC601 &ª X OUT
1
2
IC605 2 XT
16MHz5.5Vp-p32.768kHz5.2Vp-p12.5MHz3.4Vp-p
3.6Vp-p
4.09MHz
H
1Vp-p2Vp-p
H
2Vp-p
H
H1.2
Vp-p 
						

							HCD-VX8/VX8J8-3. PRINTED WIRING BOARD Ð CD SECTION Ð
¥ See page 18 for Circuit Boards Location.
Ð 33 Ð
Ð 34 Ð
(Page 42) 
						

							HCD-VX8/VX8J
Ð 35 Ð
Ð 36 Ð
8-4. SCHEMATIC DIAGRAM Ð CD SECTION Ð
¥ See page 31 for Waveforms.
¥ See page 77 for IC Block Diagrams.
¥ See page 80 for IC Pin Functions.
(Page 43) 
						

							HCD-VX8/VX8J
8-5. SCHEMATIC DIAGRAM Ð DECK SECTION Ð
Ð 37 Ð
Ð 38 Ð
(Page 55) 
						

							HCD-VX8/VX8J
Ð 39 Ð
Ð 40 Ð
8-6. PRINTED WIRING BOARD Ð DECK SECTION Ð
¥ See page 18 for Circuit Boards Location.
(Page 49)
1 C B
A
2 3 4 5 6 7 8 9 10 11 12 
						

							HCD-VX8/VX8J
8-7. PRINTED WIRING BOARD Ð VIDEO SECTION Ð
¥ See page 18 for Circuit Boards Location.
¥ Semiconductor
LocationRef. No. LocationD301 E-1
D501 D-3
D502 A-3
IC101 A-1
IC401 E-3
IC504 A-1
IC505 C-2
IC507 C-1
IC509 B-1
Q301 E-1
Q304 D-3
Q306 E-1
Q307 E-2
Q308 E-2
Q310 E-2
Q502 D-3
¥ Semiconductor
LocationRef. No. LocationIC501 C-2
IC502 B-1
IC506 C-3
Q302 E-3
Q303 D-1
Q453 E-2
Q454 E-2
Q531 D-1
Ð 41 Ð
Ð 42 Ð
(Page 34)(Page 50)