– 30 –
MD-MT88H/99H
• The numbers
1
to
18
are waveform numbers shown in page 36.
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 28.
14
13
15
2 18
17
16
1
4
3
9
11
10
12
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+2.7V
RF SIGNAL
PROCESSOR
RESET
SYSTEM
MICROCOMPUTER
EEPROM
HEAD DRIVER
HEAD DRIVER
HEAD DRIVER
MOTOR DRIVER
PWM DRIVER
SPINDLE
MOTOR
DRIVER
ENDEC/SERVO/ATRAC
16M BIT D
PLAYBACK SIGNAL
RECORD SIGNAL
4
3
2
1
14 13 12 11 10
9 8 7 6 5 4 3 2 1
14 13 12 11 10
9 8 7 6 5 4 3 2 1
10
9
8
7
6
5
4
3
2
1
100
99
98
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
28
27
26
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
4
3
2
1
6
5
4
3
2
1
4
3
2
1
TP416
TP417
8
7
6
5
4
3
2
1
100
100
99
98
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
78
77
76
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50
49
48
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
48 47 46 45 44 43 42 41 40 39 38 37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
36
35
34
33
32
31
30
29
28
27
26
25
26
25
24 23 22 21 20 19 18 17 16 15 14 13
12
11
12
11
10
9
8
7
6
5
4
3
2
1
2 4
3
2
2 2
2 1
0
2
1 9
8
1
7
1
6
1
1 5
4
1
1 3
1 2
1 1
1 0
9
8
7
6
5
4
3
2
1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
8 7 6 5
4
3
2
1
5
4 3
2
1
5
4 3
2
1
22 21 20 19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
22 21 20 19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
VCCPWM
OPICGA
LDON
LDVAR
PDCNT
EMPH0
CH
P
P
P
C
PL
PDCNT
INNSW
TEMP
INNSW
PBMUTE
LCDRST
LDCNT1
LDCNT2
HDON
AURESET
VCC
DSPSCK
DSPSTB
DSPDAT
CIN
SPIN
SYD0
SYRS
SYD1
SYRD
SYD2
SYD3
DISCPR
SYD4
SYD5
SYD6
SYD7
SYWR
RPLAY
XRT
FOK
SENSE
HKEY1
LDVAR
MCPGIN
HKEY2
BEEP
RCAULT
INPGCK
LDON
RKEY
INPGIN
PBAULT
DINT
DISC
SGAIN
OPICGA
AUSCLK
AUDATA
SLDRR
VCCDRAM
HDON
SPDRF
SPDRR
TRDRF
SLDRF
FODRF
TRDRR
FODRR
EFMO
LDCNT1
LDCNT2
FOK
CIN
SYD1
DINT
SENSE
SYD0
SYD3
SYD5
SYD2
SYD4
SYD7
SYRD
SYWR
SYD6
SYRS
TEMP
SGAIN
DISC
XRT
SPDRF
DCNT1
SL+
SL–
SPVM
FODRF
FODRR
TRDRF
TRDRR
SLDRF
SLDRR
DISCPR
SPIN
F–
F+
T–
T+
SPDRR
EFMO
VCCHEAD
R
DISC
PROTECT
PE4
PCNT1
PLVON
CHGON
CHGCNT
CHIMON
PLVBAT
STOP
REC
RF4
NMI
INNSW
PDCNT
PA2
LCDRST
HKEY1
HKEY2
TEMP
LDVAR
Vref
AVSS
EPCS
EEPK
XRST
SYD0
SYD1
SYD2
SYD3
SYD4
SYD5
SYD6
SYD7
SYWR
SYRD
SYRS
LDON
VSS
DCEXT
XTAL
VCC
RESET
SPIN
CIN
SENSE
FOK
AVCC
RKEY
DCNT1
EJSW
DISCPR
DSPSTB
DSPDAT
DSPSCK
EMPHO
_PLAY
TEST0
TEST1
MCPGI
INPGI
INPGCK
CKSTP
MCMON
RMDAT
DISCP
SGAIN
RACLK
RADAT
PBLAT
RCLAT
PBOPON
EEPD
VSS
VSS
RCPCNT
VSS
50 PAD0
BUZOUT
MD0
MD1
WDTOVF
MD2
µ
STBY
VCC
EXTAL
VSS
VSS
VCC
JPNP
ELON
RPLAY
ARQK
DINT
ARQD
SPWDS
SCK0
OPICGA
WP
OUT
VDD
VSS
PCNT2
RFPCNT
EFMMON
EFMO
ADAGC
ADIPO
AOUT
EOUT
FOUT
FIN
EIN
BIN
AIN
TCGI
RFADD
REFO
REFI
RF4
RF3
RF2
RF1
BIAS
ADIP AGC
DIFF
R
and
SW
BPF
RAA10
ACRCER
PLCK
SYRS
FEMON
DADATA
ADDATA
DFCK
BCLK
LRCK
DGND
DOUT
DIN
X1O
X1I
VXI
X700KO
TOTMON
TEMON
OPTCNT
DAPON
ADPON
FOK
SENSE
COUT
MCCK
DINTX
RSTX
SYSD0
SYSD1
SYSD2
SYSD3
SYSD4
SYSD5
SYSD6
SYSD7
SYWRX
SYRDX
VBAT
WBI
TEST1
TEST0
FODRR
FODRF
TEST2
X176KO
TRDRF
TRDRR
SLDRF
SLDRR
SPDRF
SPDRR
TCG
AGND
AIN
FIN
EIN
BIN
DGND
VDD1
VDD2
DGND
EFMI
AVCC
DGND
AVCC2
RAD0
RAD1
RAWEX
RARASX
RAA9
DGND
VDD2
RAD3
RAD2
RACASX
RAOEX
RAA8
RAA7
RAA6
RAA5
RAA4
RAA0
RAA1
RAA2
RAA3
TCRS
EFMO
I/O1
I/O2
WE
RAS
A0
A1
A2
A3
VCC
C
I
I
G
A10
G
VCC
+2.5V
DISC
SGAIN
DTEMP
EOUT
BOUT
AOUT
1234
1+2
PIN
3+4
PITG
NIN
GND1
BIAS
VCC1
DCNF
2-1
ADAGI
ADIPNF
GND2
WBO
VCC2
OPICPW
TCGO
FSW
BSW
ASW
EFMAGC
SW
MODE
BOUT
ESW
VREF
VDD1
RAA11
DILOCK
VPO
PLLBVC
LDCNT1
LDCNT2
EMPH
LEDON1
PGND4
BAT3
OUT3
PGND5
OUT4R
BAT4
OUT4F
PGND6
IN4F
IN4R
VGOFF
CP4
CP3
CP2
CP1
VCC2
GND
S/S
VBAT/2MON
VBAT
IN2R
IN2F
PGND3
BAT2
OUT2F
OUT2R
PGND2
BAT1
OUT1F
OUT1R
PGND1
IN1F
IN1R
MUTE1
OPOUT
OPIN+
OPIN–
CLK
VG
VCC1
IN3
MUTE
VOUT
UOUT
WOUT
RF
NC
FCOM
UIN
VIN
WIN
OSC
NC
NC
CX
GND
STBY
BRK
VCC1
VS
VCC2
FG
FC
DET
CSLP1
CSLP2
F–
T+
F+
T–
O2
O1
G
I2
VCC
I1
G
S1
S2
G1
D1
S2
G2
S1
D2
D2
G2
G1
S
D1
VCC
GND
MAIN PWB-A
V
U
W
COM
–
–
+
+
MAGNETIC
HEAD ASS'Y(16)
SPINDLE
MOTOR
UP/DOWN
LIFT
MOTOR
SLED
MOTOR
M
M
M
OPTICAL PICKUP UNIT(17)
MECHANISM FLEXBLE
PWB ASS'Y (15)
OPIC
VCC
MP/R
B
A
LDON
COM
CVCC
VCC
DGND
DGND
LDVAR
AGND
E
F
T–
F+
T+
F–
RF2
RF4
RF3
RF1
1
2
3
FLEXBLE
PWB
TP144
CK102
TP139
CK108
TP130
TP131
TP132
TP133
CK208
CK209
CK210
TP100
CK204
CK206
CK205
CK202
CK203
CK201
TP210
TP209
TP211
TP204
CK207
TP208
TP200
CK225
CK224
CK222
TP203
TP202
TP205
TP212
TP418
TP207
TP408
TP410
TP411A
TP411
TP407
TP409
TP201A
TP206
TP201
TP406
TP415
TP405
TP401
TP402
TP400
TP441
TP403
TP610
TP602
TP601
TP665
TP663
TP651
TP652
TP653
TP654
TP655
TP660
TP656
TP657
TP658
TP659
TP661
TP664
TP662
TP351
TP110
TP111
TP171
TP104
TP108
TP118
TP122
TP114
TP121
TP115
TP109
TP113
TP105
TP112
TP102
TP101
TP103
TP106
TP107
CK901
C102 1
C103
1
R132
820K(1%)
R131
120K(1%)
R133
120K(1%)
R134
820K(1%)
IC101
IR3R58M
C114
5P(CH)
C111
1
R111 12K
C112
0.033
C106
1
C107
0.033
C109
1
C110
0.22
C108
1
R112
220K
C131
0.1
C132
0.22
C113
1
R140
390K
C133 0.22
R139 39K
R138
390K
(1%)
R136
390K(1%)
R135 56K (1%)
R102 22K
R101 22K
C204 0.47
C212
8P
R222 1M
C211 5P
XL201
33.8688MHz
C121
220P
C122 220P
R204 1K
C203 0.1
C202
47/6.3
L202
33
R205
27K(1%)
C209
0.1
R206
100K
(1%)
C205
0.1
C207
0.1
C100
10/6.3
L100
10
µ
H
C201 10/6.3
R423
22K
(1%)
IC401
IX0431AW
SW403
LID OPEN
C
0
R467 22K
D467
RB521S30
D431
1SS361
C454 0.0022
D461
RB731U
R464 220K
R466 560K
R465 100K
R463 100K
R461 100K
IC431
S80820LN
R431
330K
C431
0.47
R406
100K
C401 0.1
R413
1K
R405
10K
R424 22K
R425 22K
R402 100K
R411 100K
R412
15K
R414 1K
R415 1K
R416
1K
IC402
58X2402T
R161 1.2K
C165
0.033
C172 33/6.3
C171 33/6.3
L171
10
µ
H
C907 0.033
IC901
LB1971V
C910
0.1
C911
1
C908 0.047
C904
0.33
C905
470P
C901 0.0022
C906 0.033
C903 0.0022
R908
22K
R906
1.5M
C902 0.0022
Q901
UN5210
R920 100K
C353 10/6.3
C354 0.1
IC351
74ACT02T
C357
0.1
R351 3.9
IC651
LB1930M
D651
F10J2E
C652
0.1
R921
330
R922
100K
R361
15
C361
0.039
C651
1
C912 0.0022
C913
0.0022
C914 0.0022
R904 1
R903 1
R902 1
R901
1
R403
1K
R404 100K
C351 47P(CH)
IC353
FTD2005
D351
SBE803
IC354
CPH5608
C611
0.1
C612
0.1
IC601
LV8018W
R601 56K
L608
10
µ
H
L610
47
µ
H
L609
47
µ
H
L603
22
µ
H
L604
22
µ
H
L602
22
µ
H
L601
22
µ
H
C604 1
C603
1
C601 1
C602 1
C622
0.1
C610
1
C609 1
C608
1
R137 56K (1%)
SW601
R422 100K
SW401
EJECT
XL401
4.19MHz
PH901
POHOT
INTERRUPTER
(15-2)
CN101
CN601
M902
M901
M903
IC201
LR378161
IC
IX27
Figure 30 SCHEMATIC DIAGRAM (1/2)