Sony MDX-62 Service Manual ▷ View online
– 15 –
Pin No.
Pin Name
I/O
Pin Description
63
—
O
Not used.
64
EE CS
O
Chip select output to EEPROM. (Not used in this set.)
65
EE CKO
O
Serial clock output to EEPROM. (Not used in this set.)
66
EE SIO
I/O
Data input from/output to EEPROM. (Not used in this set.)
67
SENS
I
Internal status input from CXD2652AR (IC200).
68
LIMIT SW
I
Optical pick-up innermost track limit position detection switch (S400) input
69
DOORSW
I
Front door open detection switch (S620) input (“L” : Open complete)
70
MD LAT
O
Serial latch signal output to CXA2523AR (IC100) and CXD2652AR (IC200).
71
MD RST
O
Reset signal output to CXD2652AR (IC200).
72
VSS
—
GND
73
MD ON
O
Servo system power control output (“H” : Power ON)
74
EMPH O
O
De-emphasis circuit control output (“H” : De-emphasis ON)
75
A ATT
I
Analog mute control input (“H” : Mute ON)
76
ILLON
O
Illumination lamp (PL620) light-up control output (“H” : Lamp light-up)
77
TSTSMD
I
Single mode setting pin (“L” : Single mode)
78
TSTCKO
O
Serial clock output to LED for TEST mode display. (Not used in this set.)
79
TSTSO
O
Serial data output to LED for TEST mode display. (Not used in this set.)
80
TSTMOD
I
TEST mode setting pin (“L” : TEST mode)
81
VDD
—
Power supply pin (+5 V)
82 – 85
TSTOUT0 – 3
O
TEST key output pin of 4
×
8 matrix. (Not used in this set.)
86 – 93
TSTIN0 – 7
I
TEST key input pin of 4
×
8 matrix. (Not used in this set.)
94
TEST/VPP
—
Fixed at “L” in this set.
95
DCS1
I
Disc with/without detection 1 switch (S611) input (“H” : with disc)
96
DCS2
I
Disc with/without detection 2 switch (S612) input (“H” : with disc)
97
DCS3
I
Disc with/without detection 3 switch (S613) input (“H” : with disc)
98
DCS4
I
Disc with/without detection 4 switch (S614) input (“H” : with disc)
99
DCS5
I
Disc with/without detection 5 switch (S615) input (“H” : with disc)
100
DCS6
I
Disc with/without detection 6 switch (S616) input (“H” : with disc)
– 16 –
4-2. CIRCUIT BOARDS LOCATION
SENSOR board
POWER board
SERVO board
LAMP board
MAIN board
4-3. BLOCK DIAGRAM
MDX-62
– 17 –
– 18 –
+9V
(LINE AMP)
DCS6
DCS1
11
FOCUS
8
DRIVER
CONTROL
5
6
IC300
SLED/SPINDLE MOTOR DRIVE,
FOCUS/TRACKING COIL DRIVE
26
TRACKING
29
DRIVER
CONTROL
32
31
24
M902
(SLED)
04
22
DRIVER
CONTROL
19
20
M
15
M901
(SPINDLE)
13
DRIVER
CONTROL
17
18
M
7
4
6
9
11 APC
10 PD
LD
AUTOMATIC
POWER CONTROL
Q100
IC100
RF AMP
SWDT
SCLK
RFO 46
AGCI 40
DETECTOR
IC500
D/A CONVERTER
IC700
ELEVATOR MOTOR DRIVE
7
M904
(ELEVATOR)
9
DRIVER
CONTROL
4
2
M
IC701
LOADING MOTOR DRIVE
7
M903
(LOADING)
9
DRIVER
CONTROL
4
2
M
5
2
8
1
F
F
C
C
B
B
J
J
A
A
D
D
E
E
I
I
PD
SWDT
SCLK
XLAT
XLAT 18
16
17
RF 38
TE
SE
ADFG 32
26
28
FE
BOTM 36
34
PEAK
ABCD
37
35
78 ADFG
73 SE
74 TE
55 RFI
75 AUX2
PEAK HOLD
Q200
IC200
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO SIGNAL PROCESSOR
62 PEAK
63 BOTM
65 FE
64 ABCD
4
1
2
83 APC REF
APC REF 12
IC202
LASER
APC SWITCH
88 FFDR
89 FRDR
86 TFDR
85 TRDR
93 SPRD
94 SPFD
91 SRDR
92 SFDR
XLAT
XLAT
7
SCLK
SCLK
6
SWDT
SWDT
5
XRST
XRST
10
15 RSTB
XINT
XINT
14
SRDT
SRDT
8
SQSY
SQSY
11
DOUT
DOUT
22
DADT
DI
BCKI
BCKO
D OUT
LRCO
LRCI
CLK
RSTN
MOD1
MOD2
FS256
26
24
XBCK
LRCK 25
27
2
3
1
10
9
11
4
6
14 15
6
18
17
74
56
57
58
59
67
EMPH O
MNT0
MNT1
MNT2
MNT3
SENS
9
12
MUTE
DMI
VOUTR
R-CH
VOUTL
XTI
5 DATA
4
BCK
1
LRCK
XRST
XLAT
SWDT
SCLK
XINT
4
3
21 CC XINT
SRDT
2
1
40 MD SI
SQSY
6
5
18 SQ SY
DOUT
8
9
4
2
5
1
71 MD RST
70 MD LAT
41 MD SO
42
52
51
MD CKO
D-BASS2
D-BASS1
IC602
LEVEL SHIFT
1 M1
2 M1
3 M2
4 M2
S901
(HOME POSITION DET)
8 HOME
6 LES
69 DOORSW
S400
(LIMIT)
68 LIMIT SW
27 EHS
7 SES
95
ı
100
MDMON 5
7
8
4
11
6
9
10
2
13
IC900
BUS INTERFACE
RESET
SW
SW
RESET 15
UNI CKI 47
UNISO 46
UNISI 45
BUS ON 17
IC601
RESET
+
–
–
5
IC930
LINE AMP
7
6
MUTING
Q920
MUTING
Q910
6
4
7
3
1
2
5
CNP1
(L)
(R)
A ATT 75
R-CH
BU IN 16
BATTERY DET
Q940, 941
LINE
OUTPUT
+9V REG.
Q930, 931
+5V
(PULL UP)
+5V
(MOTOR DRIVE)
4
2
1
INPUT
VCC
OUT
+5V REG.
Q972
+3.3V REG.
Q800, 801
+3.3V
LAMP DRIVE
Q600, 601
8
IC970
REGULATOR CONTROL
PL620
(ILLUMINATION)
14
13
X601
32.768kHz
11
10
X600
14MHz
X2
X1
XT2
XT1
19
STR SW
S600
STOP
76
ILL ON
IC600
SYSTEM CONTROLLER
(BUS CONTROL CONNECTOR)
OPTICAL PICK-UP BLOCK
(KMS-241A/J2N)
MUTING
SWITCH
SWITCH
Q500
MUTING
CONTROL
SWITCH
Q932
Q970
B+ SWITCH
+5V
(SYSTEM CONTROLLER)
Q602
B+ SWITCH
+6V REG.
Q950
XOE
XCAS
41
42
A09
XRAS 44
43
47
·
46
·
48
·
49
1
·
2
·
24
·
25
22 DE
23 CAS
23 CAS
5 A9
4 RAS
4 RAS
D4
D0
AO8
D3
D0
A8
IC201
RAM
32
ı
29
·
34
ı
38
9
ı
12
·
14
ı
18
AO0
A0
XWE 45
3 WE
OSCI
OSCO
16
17
X200
22.5792MHz
MNT0
MNT1
MNT2
MNT3
SENS
MNT0
MNT1
MNT2
MNT3
SENS
SENS 9
MNT3 4
MNT2 3
MNT1 2
MNT0 1
12
13
10
11
8
9
6
5
4
3
IC603
LEVEL SHIFT
CK
Q
IC520
SWITCH
IC530
BUFFER
RV901
ELEVATOR HEIGHT
SENSOR
S611-616
DISC WITH/
WITHOUT DET
S902
LOADING END
SENSOR DET
S620
FRONT DOOR
OPEN DET
S903
STORE END
SENSOR DET
Signal Path
: PB
IC540
D-BASS CONTROL
– 35 –
• Waveforms
– Servo Section –
1
IC100
4
(A) PLAY MODE
200 mV/DIV, 10
µ
sec/DIV
Approx.
150 mVp-p
150 mVp-p
2
IC100
8
(E) PLAY MODE
100 mV/DIV, 10
µ
sec/DIV
Approx.
150 mVp-p
150 mVp-p
3
IC100
9
(F) PLAY MODE
100 mV/DIV, 10
µ
sec/DIV
Approx.
150 mVp-p
150 mVp-p
4
IC100
1
,
2
(I, J) PLAY MODE
100 mV/DIV, 10
µ
sec/DIV
150 mVp-p
5
IC100
#•
(RF) PLAY MODE
500 mV/DIV, 1
µ
sec/DIV
Approx.
1.1 Vp-p
1.1 Vp-p
6
IC100
#¢
, IC200
^
∞
(FE) PLAY MODE
200 mV/DIV, 0.5 msec/DIV
400 mVp-p
7
IC100
@§
, IC200
&¢
(TE) PLAY MODE
500 mV/DIV, 0.5 msec/DIV
2.0 Vp-p
8
IC200
@
∞
(LRCK)
3.2 Vp-p
22.7
µ
s
3.2 Vp-p
354 ns
9
IC200
@§
(XBCK)
! º
IC200
!§
(OSCI)
2.8 Vp-p
44.3 ns
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