Sharp MD-MT877 MiniDisc Player User Manual


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MD-MT877/MD-MT877C
• The numbers 1 to 15 are waveform numbers shown in page 37.
A
B
C
D
E
F
G
H
1
23456
Figure 30 SCHEMATIC DIAGRAM (1/2)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 28.
+2.5V
+1.5V
+2.7V
MAIN PWB-A
11
1
PLAYBACK SIGNAL
RECORD SIGNAL
OPTICAL PICKUP
MECHANISM FLEXIBLE
51
50
49
64
63
62
19
18
17
32
31
30
1
11
10
4
3
15
14
2
9
12
13
L103
11 10
987654321
W
V
U
–
V
U
W
COM
+
M901
SPINDLE
MOTOR
M903
LIFT
MOTOR
M902
SLED
MOTOR
M
M
M
TP487
TP487A
TP105A
LDVAR
LDON
OPICGA
1 2 3 4 5 6 7 8 9
TP113
TP107
TP116
TP117
TP118
TP111
TP114
TP110
TP108
TP103
TP102
TP106
TP101
TP105
TP109
TP115
TP119
TP120
TP121
TP122
T–
F+
T+
F–
RF1
RF3
RF4
RF2
F+
T–
F–
T+
AGND
MP/R
VCC
CVCC
COM
VCC
DGND
DGND
LDVAR
LDON
F
E
10 11 12 13 14 15 16 17 18 19
OPIC
TP352
14
13
12
11
10
9
8
7
6
5
4
3
2
1
VCC
GND
TP351
8
7
6
5
4 3 2 1
3
2
1 5
4
5
4 3
2 1
TP656
TP658
TP657
TP655
TP654
TP660
TP659
TP661
TP651
TP653
TP652
HEAD
DCNT1
TRDRR
TRDRF
FODRR
FODRF
X176K
SPDRF
3
2
1
N.C.
SPVM1
SPPG1
SPVM2
SPWOUT
SPVOUT
SPUOUT
SPPG2
IN2R
IN1F
STALL
STHB
PWVM
PWOUT
PWPG
H1PG
N.C.
EXTCLK
C1P
C1M
C2P
H2ROUT
H2VM
H2FOUT
H2PG
H1ROUT
H1VM
H1FOUT
H1PG1
H2PG2
VCC2
VCC1
SLVM1
SLUOUT
SLPG1
SLVOUT
SLVM2
SLPG2
SLCOM
BEMFW
BEMFV
BEMFU
SLWOUT
RIB
SPCOM
SPWIN
S2
S1
ASGND
CST
CSL1
CSL2
FG
BRK–
BRK+
IN1R
IN2F
C2M
VG
S3
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
SPVIN
SGND
PWIN1
SPUIN
16
15
14
13
12
11
10
9
8
7
6
5
4 3 2 1
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
8
7
6
5
4
3
2
1
G
G
I1
VCC
I2
O1
O2
ESW
BOUT
FSW
TCGO
AOUT
BOUT
EOUT
DTEMP
RFADD
TCGI
EIN
FIN
FOUT
EOUT
48 47 46 45 44 43 42
10
ASW
BSW
GND1
NIN
PITG
3+4
PIN
1+2
1234
R
and
SW
DIFF
BIAS
RF1
RF2
RF3
RF4
REFI
REFO
AIN
BIN
AOUT
12
11
9
8
7
6
5
4
3
2
1
41 40 39 38 37
13 14 15 16 17 18 19 20 21 22 23 24
EFMAGC
ADAGI
2-1
DCNF
VCC1
BIAS
ADIP
ADIPO
EFMO
AGC
MODE
SW
OPICPW
VCC2
WBO
GND2
BPF
CK102
35
36
34
33
32
31
30
29
28
27
26
25
DISC
SGAIN
TEMP
ADIPNF
ADAGC
TP901
TP610
DISCPR
SLCNT3
SLCNT2
SLCNT1
SPDRR
SPIN
LDCNT2
LDCNT1
EFMO
HDON
TP100
TP211
TP209
TP210
FOK
SENSE
CIN
SYD1
DINT
SYD0
SYD3
SYD2
SYD5
SYD4
SYD7
SYWR
SYRD
SYD6
SYRS
XRT
TP201A
TP201
X176KO
TRDRR
TRDRF
FODRF
FODRR
SPDRF
SPDRR
6
5
43
2
1
VCC2R5V
VCCDRAM
TP200
CK224
TP203
CK222
TP205
CK225
TP212
EFMO
LDCNT2
LDCNT1
TP204
CK207
TP208
CK202
CK201
CK203
TP202
RAA11
RAA1
RAA0
RAA4
RAA5
RAA6
RAA7
RAA8
RAOEX
RACASX
RAD2
RAD3
VDD2
DGND
RAA9
RARASX
RAWEX
RAD1
RAD0
ACRCER
RAA10
DGND
VDD2
SYSD7
SYSD6
SYSD5
SYSD4
SYSD3
SYSD2
SYSD1
SYSD0
RSTX
DINTX
MCCK
COUT
SENSE
FOK
ADPON
DAPON
OPTCNT
VDD1
VREF
AVCC2
DGND
EFMI
BIN
EIN
FIN
AIN
AGND
TCG
SLDRF
TRDRR
TRDRF
X176KO
TEST2
FODRF
FODRR
WBI
VBAT
LEDON1
EMPH
LDCNT2
LDCNT1
PLLBVC
VPO
DILOCK
VDD1
DGND
TEST0
TEST1
VXI
X1I
X1O
DIN
DOUT
DGND
LRCK
BCLK
DFCK
ADDATA
DADATA
9
8
7
6
5
4321
2
1
2223 2425212019181716151413121110
54 53 5251555657585960616263646566676869707172737475
29
28
27
26
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
10
11
12
15
14
13
18
17
16
21
20
19
24
23
22
97
98
99
98
99
100
100
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
73
74
75
HDON
76
77
48
49
50
51
52
23
24
25
26
27
78
TEMON
TOTMON
FEMON
SYRDX
SYWRX
SYRS
AVCC
EFMMON
EFMO
X700KO
TCRS
PLCK
RAA3
RAA2
SPDRR
SPDRF
SLDRR
VCC
A10
VCC
A3
A2
A1
A0
RAS
WE
I/O2
I/O1
GND
I/O4
I/O3
CAS
OE
A9
GND
A8
A7
A6
A5
A4
9
8
7
6
5
4
3
2
1
SYD7
SYD4
SYD3
SYRS
SYRD
SYD6
SYD5
SYD2
SYD1
SYD0
SYWR
RCAULT
INPGCK
MCPGIN
INPGIN
RFPCNT
TP417
TP416
BEEP
SGAIN
OPICGA
TP415
PBMUTE
AUSCLK
AUDATA
DSPSCK
DSPSTB
DSPDAT
CHGCNT
CIN
DISCPR
SPIN
DISC
DINT
FP31
FP32
TP412
LDVAR
TEMP
RKEY
STDCK
HKEY2
HKEY1
PLVBAT
PLVDCI
FP66
TP406
_DCIN
FP59
TP400
FP67
SLCNT3
SLCNT1
FOK
SENSE
LDON
RPLAY
DCEXT
SLCNT2
TP401
TP402
AURESET
P17
P11
ARQD
DINT
AVSS
PBOPON
RADAT
RACLK
CHGCNT
DSPSCK
DSPDAT
DSPSTB
DISCPR
CIN
SPIN
LDVAR
RKCNG
TEMP
HKEY2
HKEY1
OSC1
FWE
SLCNT3
RPLAY
VSS
EXTAL
VCC
uSTBY
_DCIN
MD2
MD1
MD0
SLCNT1
EJSW
AVCC
SENSE
_RESET
XTAL
SLCNT2
Vref
RFPCNT
OPICGA
JPNP
RCPCNT
RCLAT
INPGCK
INPGI
MCPGI
TEST1
TEST0
VCC
VSS
SYWR
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
9
8
7
6
5
4 3 2 1
1
2
131211101415161718192021222324
23
24
25
26
27
49
50
51
52
74
75
76
77
78
98
99
100
25
29
28
27
26
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
54535251 555657585960616263646566676869707172737475
LEDCNT3
LEDCNT2
LEDCNT1
STOP
PCNT3
PCNT2
BATON
EPRT
ELON
N.C.
N.C.
N.C.
EEPD
PBLAT
CKSTP
REC
DCON
_PLAY
EMPH0
DCNT1
LDON
XRST
EEPK
EPCS
97
98
99
100
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
BUZOUT
SGAIN
DISCP
MCMON
PCNT1
SYRS
SYRD
PLVBAT
PLVDCI
STDCK
RKEY
SCK0
PCLDI
RMDAT
FOK
DCEXT
TP4
0
STOP
ELON
DCON
PCNT3
EMPH0
PCNT2
PBAULT
DCNT1
HREC
XRT
BATON
(OG)
(GREEN)
(BLUE)
TP411A
TP408
TP409
TP411
8
7
6
5
TP413
VDD
OUT
VSS
4
32
1
HEAD
S
G2
G1
D2
D1
S1
S2
G1
D1
S2
G2
S1
D2
A
B
20 21 22
1
22
N.C.
N.C.
3
1
2
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
+B
+B+B
+B
+B
+B
+B
+B
+B
+B
+B
4.22V
0V
0V
N.C.
N.C.
C165
0.033
R903
470
L608
10µH
C608
1
R907
180K
R908
100K
R905
100K
C908 0.33
C910 0.047
C909 0.047
C905 0.0022
C907 0.0022
C906 0.0022
R904
10K
C901
1
C911
0.1
C912
0.1
IC601
L604
22µH
L603
4.7µH
L601
22µH
L602
22µH
C602
1
C601
1
C603
1
C604
1
C151
0.01
R151
100K
R403
1K
SW901
DISC PROTECT
R404
100K
R407
100K
XL401
3.68MHz
C431
0.47
R431
330K
D431
1SS361
IC431
S-80820LNP
RESET
R461 100K
C454
0.0022
R464
220K
R463 100K
R462
22K
SW401
EJECT
R423
22K
R425
22K
IC401
IX0419AW
SYSTEM
MICROCOMPUTER
IC4
0
58X2
4
EEPR
R416
1K
TP4
0
C401
0.1
D432
1SS372
R402
100K
R405
10K
R424
22K
R422
100K
C202
47/6.3
L202
10µH
CN601
L100
10µH
C100
10/6.3
C201
10/6.3
R205
27K
Q103
FDG312 P
C605
0.1
C600
22/6.3
C902
0.01
R909
10K
IC651
LB1938T
MOTOR DRIVE
C652
0.1
D651
F10J2E
R351
3.9
R361
15
C361
0.039
IC354
C351
47P
(CH)
TP207
CN101
IC201
LR378161
ENDEC/SERVO
/ATRAC
CK204
CK205
CK206
C203
0.1
IC202
IX2824A
16MBIT
D-RAM
IC353
IC351
C357
0.1
C354 0.1
C113
1
C353
10/6.3
C112
0.1
C111
1
R111
12K
C114
5P(CH)
C109
1
R112
220K
R133
150K
TP139
R103
22K
CK108
R104
22K
R101
22K
R102
22K
C123
330P
C121
220P
C122
220P
CK111
C124
330P
CK113
CK112
CK114
C209
0.1
R204
1K
R161
1.2K
C171
33/6.3
L171
10µH
C172
33/6.3
R206
100K
C205
0.1
TP206
C207
0.1
C108
1
C131
0.1
IC101
C110
0.22
C132
0.22
C106
1
C133
0.22
C107
0.1
R139
39K
R140
390K
TP130
TP131
TP132
TP133
R138
390K
R137
56K
R135
56K
R136
390K
R132
1M
R131
150K
R134
1M
TP144
TP144
C102 1
C103
1
C204
0.47
R222
1M
C211 5P(CH)
XL201
33.8688MHz
C212
8P(CH)
Q901
RN1104
R920
100K
D351
SBE803
C130
0.1
R406
22K
R408
100K
R412
15K
R411
100K
R414
1K
R415
1K
IC601
BD6640KV
MOTOR DRIVE
IC353
FTD2005
HEAD DRIVER
IC354
CPH5608
HEAD DRIVER
IC351
74ACT02FT
HEAD DRIVER
R906
270K
IC101 IR3R58M
RF SIGNAL PROCESSOR
R207
680
L204
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