Service manual
– 26 –
MD-SR50H/50W/60E/60W
• The numbers 1 to 18 are waveform numbers shown in page 31.
A
B
C
D
E
F
G
H
1
23456
Figure 26 SCHEMATIC DIAGRAM (1/2)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 23.
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4 3 2 1
TP610
CK901
TP601
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
TP602
6
5
4 3
2
1
TP407
4
3
2
1
8
7
6
5
4
3
2
1
TP410
TP408
TP409
TP411
10
9
8
7
6
5
4
3
2
1
TP441
4
3 2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TP207
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
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
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
2 0
19
18
17
16
15
14
13 12
11 10
9
8
7
6
5
4 3 2 1
TP151
CK104
CK106
TP145
TP139
CK101
TP100
TP144
TP133
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CK105
CK112
CK103
CK102
CK107
TP131
TP130
CK108
TP132
TP171
TP212
TP204
TP202
TP205
CK207
CK224
CK222
TP203
TP206
TP210
TP209
CK201
CK202
CK205
CK203
CK206
CK204
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
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
47
46
45
44
43
42
41
40
39
38
87
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
TP201
TP208
TP200
10
9
8
7
6
5
4
3
2
1
TP651
TP652
TP653
TP654
TP655
TP656
TP657
TP662
TP658
TP659
TP660
TP661
TP663
TP666
TP664
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TP351
8
7
6
5
4 3 2 1
5
4 3
2
1
5
4 3
2 1
TP665
TP119
TP115
TP105
TP101
TP109
TP106
TP102
TP108
TP103
TP114
TP110
TP118
TP111
TP121
TP122
TP120
TP117
TP116
16
15
14
13
12
11
10
9
8
7
6
5
4 3 2 1
TP401
TP415
TP403
TP402
TP400
TP416
TP417
6
5
4 3
2
1
TP413
TP414
4
3 2
1
TP405
TP404
N.C.
ROUT
GOUT
TTR
EFMAGI
EFMAGC
AGND
AVCC
EFMI
EFMO
RF2-1
ADAG
ADAGC
ADIPI
ADIPO
ADLPFO
22KO
22KI
WBO
TCGO
AOUT
BOUT
EOUT
FOUT
DVCC
DATA
CLOCK
LATCH
DTEMP
DGND
AGND
SGAIN
DISC
STBY
AVCC
BIAS
FIN
EIN
BIN
AIN
TCGI
RFADD
REFO
REFI
RF4
RF3
RF2
RF1
BIAS
AGC
ADIP
AGC
EFM
DIFF
DIFF
SW
and
R
HPF LPF
LOGIC
N.C.
N.C.
X700KO
EFMMON
LDCNT1
RAA10
ACRCER
PLCK
SYRS
FEMON
DADATA
ADDATA
DFCK
BCLK
LRCK
DGND
VDD3
DOUT
DIN
X1O
X1I
VPD
VXI
ADPON
DAPON
OPTCNT
EMPH1
LDCNT2
TOTMON
SBO
SBSY
SFSY
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
VDD1
DGND
EFMI
AVCC
DGND
VDD1
RAD0
RAD1
RAWEX
RARASX
RAA9
DGND
VDD2
RAD3
RAD2
RACASX
RAOEX
RAA8
RAA7
RAA6
RAA5
RAA4
RAA0
RAA1
RAA2
RAA3
TCRS
EFMO
G
I
I
C
VCC
A3
A2
A1
A0
A9
RAS
WE
I/O2
I/O1
VOUT
UOUTWOUT
RF
N.C.
FCOM
UIN
VIN
WIN
OSC
N.C.
N.C.
CX
GND
STBY
BRK
VCC1
VS
VCC2
FG
FC
DET
CSLP1
CSLP2
S1
S2
G1
D1
S2
G2
S1
D2
D2
G1
S
D1
VCC
GND
N.C.
N.C.
N.C.
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
O2
O1
G
I2
VCC
I1
G
N.C.
OUT
VDD
VSS
N.C.
VSS
A2
A1
A0VCC
WP
SDA
SCL
APQD
DINT
ARQ
RPLAY
JPNP
VCC
PCNT2
VSS
VSS
VCC
uSTBY
NMI
EXTAL
WDTOVF
MD2
MD1
MD0
RCPCNT
BUZOUT
VSS
VSS
VSS
EEPD
PCNT1
PBOPON
RCLAT
PBLAT
RADAT
RACLK
RFLAT
RMDAT
MCMON
CKSTP
INPGCK
PDCNT
INPGI
MCPGI
TEST1
TEST0
KHOLD
REC
PLAY
DCEXT
DSPSCK
DSPSTB
DSPDAT
HDON
DISCPR
DCNT1
RKEY
EJSW
AVCC
FOK
SENSE
RESET
CIN
SPIN
XTAL
VCC
EMPH0
LDON
INNSW
VSS
SYRD
SYRS
SYWR
SYD7
SYD5
SYD4
SYD6
SYD3
SYD1
SYD2
SYD0
XRST
EEPK
AVSS
EPCS
Vref
LDVAR
TEMP
HKEY2
HKEY1
PLVON
PLVGIN
EL
CHGON
PLVBAT
CHGCNT
BATOFF
NIH
EPWP
LCDRST
OPICGA
PCRX
SCK0
SPWDS
N.C.
SPDRF
DCNT1
SL+
SL-
SPVM
FODRF
FODRR
TRDRF
TRDRR
SLDRF
SLDRR
LDCNT2
LDCNT1
VCCPWM
DISCPR
SPIN
HDON
F-
F+
T-
T+
SPDRR
VCCRF
RFLAT
AUSCLK
AUDATA
VCCLD
AUDATA
AUSCLK
OPICGA
LDVAR
RFLAT
TEMP
LDON
VCCPU
HREC
HDON
EFMO
LDCNT1
LDCNT2
SYRS
SYRD
SYWR
VCCDRAM
SYD0
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SLDRF
TRDRR
DINT
CIN
SENSE
FOK
SPDRR
SPDRF
SLDRR
TRDRF
FODRR
FODRF
XRT
INNSW
PDCNT
EFMO
VCCHEAD
ELON
DSPSCK
DSPSTB
DSPDAT
PDCNT
SPIN
DISCPR
CIN
SYD0
SYD1
SYD2
SYD3
SYD4
SYD5
SYD6
SYWR
SYRD
SYRS
SYD7
DINT
AURESET
LDVAR
BEEP
HPLAY
RPLAY
CHGCNT
HKEY2
RKEY
HKEY1
TEMP
XRT
SENSE
FOK
INNSW
CHGON
LDON
OPICGA
PLVGIN
PLVON
PLVDRY
PCNT1
PCNT2
DSPRST
PBAULT
PBMUTE
INPGCK
INPGIN
MCPGIN
EMPH0
RCAULT
RCPCNT
F-
T+
F+
T-
+2.7V
MAIN PWB-A
V
U
W
COM
-
-
+
+
HEAD
M
OPIC
VCC
MP/R
B
A
LDON
COM
CVCC
VCC
DGND
DGND
LDVAR
AGND
E
F
T-
F+
T+
F-
RF2
RF4
RF3
RF1
24
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
36
35
N.C.
N.C.
N.C.
N.C.
N.C.
26
25
12
11
N.C.
N.C.
G2
TP406
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4 3 2 1
OPTICAL PICKUP UNIT
MECHANISM FLEXIBLE
PWB ASS'Y
M
M
78
77
76
TEMON
SBCK
100
99
98
50
49
48
N.C.
N.C.
N.C.
N.C.
28
27
26
N.C.
N.C.
N.C.
N.C.
27
26
78
77
76
100
99
N.C.
N.C.
PLAYBACK SIGNAL
RECORD SIGNAL
2
18
16
17
1
11
10
3
4
9
12
14
15
13
+B
+B
+B
+B
+B
+B
2.5V
2.5V
1.75V
0V
4.5V
0V
C102
1
R105
390K
C103
1
C104
0.027
R154
1.2K
C161
1
Q101
2SA17457
LASER ON/OFF
R161
1.2K
C130
0.1
R104
22K
R103
22K
C121
270P
(CH)
C123
390P
C124
390P
C122
270P
(CH)
R102
22K
R101
22K
R106
56K
C110
0.22
C106
0.22
C109
1
C107
0.012
C112
0.033
C111
0.0033
C209
22P (CH)
XL201
33.868MHz
R222
1M
C211
5P (CH)
C212
5P(CH)
C204
0.47
C207
0.1
R206
270K
R205
330K
C205
0.1
C100
10/6.3
L100
10µH
C201
1
C
4
7
R202
33
IC202
IX2567
A
4M D-R
A
SW403
LID DETECTION
D461
RB731U
R463
100K
R464
100K
C454
0.0022
R466
560K
R465
100K
R461
100K
D431
HSB2838
R431
330K
IC431
S80820LN
RESET
C431
0.47
R622
1K
D622
MA8075M
IC621
RN4904
DIGITAL
TRANSISTOR
R621
100K
C606
22/6.3
C605
0.1
C622
0.1
C604
1
C603
1
C601
1
C602
1
L603 4.7
L604 4.7
L602 4.7
L601 4.7
IC601
LV8017W
L608
4.7
L610
4.7
L609
4.7
C610
1
C609
1
C608
1
R601
56K
C651
1
R600
56
D651
F10J2E
C652
0.1
IC651
LB1930M
MOTOR DRIVE
R403
1K
R404
100K
CN601
R921
330
R922
100K
C353
10/6.3
C354
0.1
IC353
FTD2005
N-ch MOS FET
C912
0.0022
C913
0.0022
C914
0.0022
R904
1
R903
1
R902
1
R901
1
C907
0.022
C911
3.3
C908
0.047
C906
0.022
R908
22K
XL401
4.19 MHz
R423
22K
R424
22K
R425
22K
R402
100K
C401
0.1
R407
10K
R408
100K
SW402
HOLD
R412
15K
R414
1K
R413
1K
IC402
58X2402T
EEPROM
R411
1K
R415
1K
R416
100K
R406
100K
R405
10K
SW401
EJECT
CN101
C172
33/6.3
C171
33/6.3
L171
10µH
IC201
LR37811
ENDEC/SERVO/
ATRAC
C165
0.033
IC901
LB1971V
SPINDLE
MOTOR DRIVE
C904
0.33
C905
470P
C901
0.0022
C903
0.0022
R906
1.5M
C902
0.0022
Q901
UN5210
R920
100K
IC351
74ACT02T
NOR GATE
C357
0.1
R351
4.7
IC401
IX0341AW
SYSTEM
MICROCOMPUTER
SW902
DISC PROTECT
M901
SPINDLE
MOTOR
M903
LIFT
MOTOR
M902
SLIDE
MOTOR
IC101
IR3R55
IC354
CPH5608
N-ch MOS FET
D351
SBE803
C361
0.039
C203
0.1
R204
1K
R361
15
C910
0.1
IC101:
RF SIGNAL PROCESSOR
C351
27P
(CH)
IC601: 4-CH PWM DRIVER
PH901
PHOTO
INTERUPTER