Sony MDS-JE480 Service Manual ▷ View online
36
MDS-JE480
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
KEY-SW board
DISPLAY board
BD board
MAIN board
PT board
37
37
MDS-JE480
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
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
• 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.
•
f
: internal component.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : STOP
(
)
: PLAY
<
>
: REC
∗
: Impossible to measure
• 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.
E
: PB
j
: REC
l
: REC (DIGITAL IN)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
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)
parts face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
B
These are omitted.
C
E
Note:
The components identified by mark
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
• WAVEFORMS
– MAIN Board –
– BD Board –
2
IC101
ef
(FE)
(Play mode)
4
IC803
1
(XIN)
5
IC201
w;
(OSCO)
6
IC201
ef
(LRCK)
7
IC201
eg
(XBCK)
3
IC101
ek
(RF)
1.2Vp-p
0.1Vp-p
1
IC101
wh
(TE)
(Play mode)
1.5Vp-p
On track jumping
2Vp-p
11.2896 MHz
2.5Vp-p
90.3 MHz
3.2Vp-p
23
µ
sec
0.36
µ
sec
3.2Vp-p
1
IC1
qd
(XOUT)
2
IC550
1
2.7Vp-p
3.2Vp-p
10 MHz
11.2896 MHz
– PANEL Board –
1
IC760
tl
(OSC1)
3.2Vp-p
µ
4.5 sec
MDS-JE480
38
38
6-2. BLOCK DIAGRAMS – BD SECTION –
F
C
B
D
A
E
I
J
J
I
B
A
C
D
E
F
DETECTOR
J
I
A
B
C
D
D
E
F
LD
PD
LASER DIODE
ILCC
PD
OPTICAL PICK-UP
(KMS-260B/260E)
(KMS-260B/260E)
LD DRIVER
Q202, 203
Iop MONITOR
AMP
IC701
APC
PD
APCREF
AT
AMP
B.P.F.
WBL
ADFM
ADIN
ADFG
ABCD
AMP
ABCD
FE
TE
SE
F0CNT
WBL
3T
EQ
COMMAND
SWDT
SCLK
XLAT
RFO
RF AGC
& EQ
AGCI
EQ
RF
RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
TEMP
MORFO
MORFI
3T
WBL
AUX
PEAK
BOTM
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC401
OUT4F
OUT4R
M101
(SPINDLE)
OUT2F
OUT2R
M102
(SLED)
OUT3F
OUT3R
OUT1F
OUT1R
FCS+
FCS–
TRK+
TRK–
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
IN4R
IN4F
IN2F
IN2R
IN3F
IN3R
IN1F
IN1R
MOD
SPFD
SPRD
APCREF
SFDR
SRDR
FFDR
FRDR
TFDR
TRDR
PSB
FROM CPU
INTERFACE
DIGITAL SERVO
SIGNAL PROCESSOR
IC201 (2/2)
PRWR
AUX1
ABCD
FE
TE
SE
PEAK
BOTM
XLRF
CKRF
DTRF
XLAT
SCLK
SWDT
FILI
PCO
CLTV
FILO
EFMO
ADDT
DATAI
DIGITAL IN
(OPTICAL)
NC
D+3V
IC151 (1/2)
TX
ASYO
ASYI
RFI
SCTX
EFMO
HR901
OVER WRITE HEAD
ADFG
F0CNT
SPFD
SPRD
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
INTERFACE
DIN0
DOUT
OSCN
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
IC201 (1/2)
INTERNAL BUS
DADT
XBCK
LRCK
FS256
OSCI
OPT1
OPT2/COAX
OSCO
DQSY
SQSY
XINT
SENS
XRST
SRDT
SWDT
SCLK
XLAT
MNT0
MNT1
MNT2
MNT3
SHOCK
XBUSY
SWDT
SCLK
XLATCH
MNT1 (SHOCK)
MNT2 (XBUSY)
DIG-RST
SQSY
DQSY
LDON
NC
NC
IOP
WRPWR
MOD
XINT
SENS
SRDT
LDIN
LDOUT
IN1
IN2
OUT1
OUT2
VZ
LOADING
MOTOR DRIVE
IC440
M103
(LOADING)
D+3V
DQ1
–
DQ4
A0
–
A9
D0
–
D3
A00
–
A09
XOE
XWE
XRAS
XCAS
OE
WE
RAS
CAS
D-RAM
IC153
CLOCK
GENERATOR
IC803
DIN1
SYSTEM CONTROLLER
IC1 (1/2)
HF MODULE
ADDT
DADT, BCK, LRCK
REFLECT
PROTECT
LD-LO
SDA
SCL
EEP-WP
UNREG
+12V
65
LIMIT-IN
OUT-SW
S101
(LIMIT IN)
PLAY-SW
•
SIGNAL PATH
: PLAY (ANALOG OUT)
: REC (ANALOG IN)
: REC (ANALOG IN)
: REC (DIGITAL IN)
S103
(OUT SW)
S104
(PLAY SW)
REC-SW
S105
(REC POSITION)
XBCKI
LRCKI
S102
(REFLECT/PROTECT DETECT)
HIGH REFELECT RATE/
WRITE PROTECT
LOW REFELECT RATE/
UN-PROTECT
OVER WRITE
HEAD DRIVE
IC181
, Q181, 182
WAVE
SHAPER
IC600
(1/2)
OPTICAL
RECEIVER
IC611
11
9
8
4
1
2
48
47
46
40
33
38
37
36
32
35
34
26
28
18
17
16
20
12
30
29
5
6
7
10
4
3
LASER ON
SWITCH
Q201
LD/PD
AMP
I-V
AMP
I-V
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RF AMP
B.P.F.
PEAK &
BOTTOM
6
8
108
107
104
105
103
102
98
97
100
15
80 78 79 86 85 76 77
99
27
25
12
10
21
23
19
18
14
15
29
30
3
4
16
M
M
M
SERVO
DSP
ANALOG MUX
A/D CONVERTER
SERIAL/PARALLEL
CONVERTER,
DECODER
AUTO
SEQUENCER
V-I
CONVERTER
HF MODULE
SWITCH
Q701 – 704
115
73
72
75
74
67
68
70
91
94
110 109
14 13
16 12 11 10
6 7 8
1 2 3 4
38
37
19
36
21
34
35
33
26
25
24
28
29
27
32
20
5
1
47
46
22
3
4
23
17
ADIP
DECODER
SPINDLE
SERVO
COMPA-
RATOR
PLL
FILTER
SUBCODE
PROCESSOR
EFM/ACIRC
ENCODER/DECODER
SHOCK PROOF
MEMORY CONTROLLER
ATRAC
ENCODER/DECODER
CPU
INTERFACE
MONITOR
CONTROL
CONTROL
PLL
(X8)
CLKA
XIN
18
57
89
52
52
54
56
20
25
58 32
33 50
59 48
31
CLOCK
GENERATOR
43, 45, 44, 42
1, 2, 24, 25
48, 49, 51
–
56, 59, 60
5, 9
–
12, 14
–
18
C
B
A
67 66
5
6
4
VCC2 8
VCC1 7
SCL
WP
6
7
SDA
5
45
60
2
10
55
49
51
53
61
44
M
REFERENCE
VOLTAGE SWITCH
Q440,445
+5V
D+3V
A+3V
+3.3V
REG.
IC933
D+2.5V
+2.6V
REG.
IC926
EEPROM
IC195
47
PWM GENERATOR
(Page39)
(Page39)
(Page39)
MDS-JE480
39
39
– MAIN SECTION –
X550
11.2896MHz
LED DRIVE
Q726
ROTARY
ENCODER
FL DRIVE
Q767
D726
STANDBY
A/D, D/A CONVERTER
IC500
SDTO
ADDT
DADT, BCK,
LRCK
LRCK
SDTI
A
B
LINE AMP
IC310
MUTING
Q181, 281
MUTING
CONTROL SWITCH
Q380
REMOTE CONTROL
RECEIVER
IC781
OSC
J300
ANALOG
IN
L
R
L
R
D382
D381
ANALOG
OUT
ADA,LATCH
DAT
P1
P2
G13
MUTE
ADA,RESET
CLK
CS
AC
(TO FL750)
TR900
POWER
TRANSFORMER
UNREG +12V
LOADING MOTOR
DRIVER (IC440) B+
RECT
D421
D421
UNREG +12V
LINE AMP
(IC 310, 360)
UNREG –12V
RECT
D411,412
RECT
D466–467
RECT
D461, 462
40 – 51
5 – 39
S1–S35
96,95,94
KEY0 – KEY2
G1 – G12
AC
S1 – S35
G13
G1 – G12
FLUORESCENT INDICATOR TUBE
FL750
FL/LED DRIVER
IC760
DECIMATION
FILTER
LPF
8X
INTERPOLATOR
SERIAL
I/O
INTERFACE
CLOCK DIVIDER
BICK
LRCK
EMF
DADT
BCK
LRCK
LIN
RIN
MCLK
FLDT
FLCK
FLCS
JOG0
GND
SW
JOG1
P DOWN
l
AMS L
PUSH ENTER
S713
S701 – 706, 711, 712,
S714-716, 721 – 724,
S726
A
B
PD
DEMO
SIRCS
OSCI
C769, R769
OSCO
LINE AMP
IC360
OSC
IC550
C
(Page38)
(Page38)
(Page38)
•
SIGNAL PATH
RST
XIN
XOUT
X15
10MHz
SYSTEM CONTROLLER
IC1 (2/2)
S.RST
8
9
12
10
13
6
2
1
VCOM
LOUT
15
14
ROUT
16
11
39
72
15
13
61
62
60
52
1
LED DRIVE
Q755
D775
MD LP
2
58
59
63
38
STB
81
4
4
5
88
87
1
3
1 2 84
19 12
–32V
REGULATOR
Q427
–32V
(FL DRIVER (IC760) B–)
+3.3V
REGULATOR
IC401
RECT
D431,432
RECT
D401-404
TR950
POWER
TRANSFORMER
RELAY
DRIVE
Q911
6
IC600(2/2)
BUFFER
9
IC406
RESET
RESET
VCC
3
5
D406
+3.3V
(SYS)
(SYS)
+3.3V
(BACKUP)
D409
D408
BT406
LITHIUM
BATTERY
CN406
OUT
+5V
VIN
3
1
+3.3V
REGULATOR
IC490
IC411
+5V
REGULATOR
VD/VA +3.3V
(TO IC500)
COMMON VOLTAGE
∆∑
MODULATOR
∆∑
MODULATOR
: PLAY (ANALOG OUT)
: REC (ANALOG IN)
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