– 24 –
MD-MT270H
• The numbers 1 to 15 are waveform numbers shown in page 37.
A
B
C
D
E
F
G
H
1
23456
• NOTES ON SCHEMATIC DIAGRAM can be found on page 22.
3
2
9
10
11
12
13
14
8
7
6
5
4
3
2
1
0.1
8
7
6
5
4
3
2
1
100K
15K
8
7
6
5
4
3
2
1
CK402
5
4 3
2
1
100K
100K
100K
10K
LV8221T
4
5
6
7
8
9
10
11
12
13
14
15
16
17
17
1819
18
20212223242526272829303132
3132
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
49
50
50
51 52 53 54 55 56 57 58 59 60 61 62 63 64
63
64
3
2
1
1
4
12345678910111213141516171819202122232425
75747372717069686766656463626160595857565554535251
26
27
44
43
42
41
40
39
38
37
50
49
50
49
48
47
46
45
36
35
34
33
32
31
30
29
28
26
27
28
99
100
99
100
82
83
84
85
86
87
88
89
76
77
76
77
78
79
80
81
90
91
92
93
94
95
96
97
98
1 2 3 4 5 6 7 8 9 1011
5
4 3
1 2
6
5
4
1 2 3
PWMCLK
DCNT1
SPDRF
SPDRR
SLDRF
OPICGA
DISC
SGAIN
DSPSCK
DSPSTB
DSPDAT
RDATA
LDVAR
AUSCLK
INPGIN
INPGCK
VCC2R5V
EFMOX
EFMO
SPIN
VCC4
SPIN
DCNT1
DCNT2
VCC_HEAD
PLVBAT
PLVDCI
SYD1
SYD2
SYD3
SYD4
SYD5
SYD6
SYD7
SYWR
SYRD
SYRS
SYD0
HKEY1
RKEY
TEMP
STOP
LDCNT2
LDCNT1
AUDATA
BEEP
CIN
RCAULT
RCPCNT
PBMUTE
DISCPR
PBAULT
DCEXT
PCNT1
PCNT2
LDON
DCNT1
DCNT2
PCNT3
DISCPR
RPLAY
HREC
HPLAY
DINT
XRT
FOK
SENSE
SLCNT3
SLCNT2
SLCNT1
TRDRF
TRDRR
FODRF
FODRR
SLCNT3
SLCNT2
SLCNT1
+B
+B
+B
+B
+B+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
HDON
HDON
RADAT
P5_3
A0
A1
A2
VSS
SDA
SCL
WP
VCC
P7_1
LSIVAR
MCMON
TEMP
AVCC
HKEY2
Vref
HKEY1
RKEY
PLVBAT
PLVDCI
P10_6
P10_7
SYWR
PCNT1
ARQK
STOP
ARQD
PCNT2
LDON
P2_2
PCNT3
DCNT2
MCNT
MSENSE
CHGCNT
VSS
EJSW
VCC
DCNT1
CKSTP
FOK
P3_4
TEST1
RFPCNT
PR
DISC
SENSE
INPGCK
INPGI
MCPGI
PBLAT
DSPSCK
DSPSTB
DSPDAT
P7_0
SPIN
CHGON
BUZOUT
PBOPON
HDON
RPLAY
RCPCNT
P8_1
REC
DINT
NMI
VCC
XTAL
VSS
RESET
EXTAL
SYCPW
VSS
CIN
EPRT
PLAY
DISCP
OPICGA
EEPD
DHLAT
TEST0
RACLK
RCLAT
P6_1
PCILD
RMDAT
PCLK
SGAIN
LDVAR
JPNP
VSS
SYRS
SYRD
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
XRST
EEPK
EPCS
AVSS
SLCNT1
SLCNT2
SLCNT3
T–
T+
F+
F–
TGND
UOUT
COM
VOUT
WOUT
SCOM
PGND4
VS4
OUT4
SWO
SWCO
SVCO
SVO
SUO
SUCO
SLGND
FG
SLVS
S3
S2
S1
VCC
VCC
VG
CPC2
CPC1
CP2
CP1
MUTE2
MUTE
IN2F
IN2R
IN1F
IN1R
VS1
OUT1F
OUT1R
PGND1
VS2
OUT2F
OUT2R
PGND2
PGND3
OUT3R
OUT3F
VS3
IN3R
IN3F
CLK
PWM
BRK
IN4
MUTE3
S/S
MODE1
VCOIN
RMAX
VCO
SGND
SGND
FIL
COMIN
SPVS
SPGND
D2
G2
S2
D1
G1
S1
D1
D2
G1
G2
S
W
V
U
–
V
U
W
COM
+
SPINDLE MOTOR
SLED MOTOR
M
M
M
OPIC
4MHz
LID OPEN
DISC
PROTECT
VCC
GND
EJECT
IX0561AW
1K
74ACT08FT
MCH6616
SBE803
CPH5608
22µH
1
220K
0.0022
10K
10K
0.0022
100K
1K
33K
0.0022
1
56K
0.0033
0.47
330K
330K
1
0.22
0.22
1
22µH
22µH
22µH
22µH
22K
100K
0.1
0.1
1
1
1
1
100K
22K
22K
0.1
1
22
330K
1K
OPTICAL PICKUP (1)
MAGNETIC
HEAD(16)
LIFT MOTOR
MECHANISM
FLEXIBLE PWB (15)
SYSTEM
MICROCOMPUTER
PWM/MOTOR
DRIVER
HEAD
DRIVER
HEAD
DRIVER
HEAD DRIVER
33P(CH)
IC401
IC402
R413
SW401
IC351
IC353
D351
IC354
CN601
L605
C605
SW403
R464
C454
R406
R405
SW601
C404
R404
R403
R606
C610
C614
R602
C620
C621
R603
R604
C613
C611
C612
C615
L604
L603
L601
L602
R467
R461
C401
C652
C602
C601
C604
C603
C351
R422
R423
R425
C130
C353
R351
R352
R444
R411
R412
XL401
R463
R465
R402
R417
C357
IC601
M902
M901
M903
CK401
TP406
TP441
TP401
TP402
CK405
TP665
TP602
TP610
TP661
TP659
TP658
TP657
TP656
TP660
TP655
TP654
TP653
TP652
TP651
TP351
TP352
CK410
TP411
TP411A
TP400
CK418
TP417
CK417
CK407
TP415
CK416
TP416
TP408
TP409
TP407
TP410
13
Figure 24 SCHEMATIC DIAGRAM (1/8)
Serial No.21100001~21102500
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