Sharp MD-MT20 User Manual

MD-MT20/20C/20W
– 27 –
Figure 27 BLOCK DIAGRAM
IC651
HEAD UP/DOWN
DRIVER
LB1930M
VCC VS
IC351
HEAD DRIVER
74ACT02T
VCC VEE
2.8V
UP CONVERTER
IC871
S8324A28
IC872
S80813LN
CHARGING CIRCUIT IC803 FDT439N IC805 NJM022V IC806 NDC631N IC807 RN4904 IC808 HN1C01FU
M903
HEAD
UP/DOWN
MOTOR
IC841
XC62HS02
2.35V REGULATOR
IC821
IR3M09N
DC/DC
CONVERTER
IC501
AD/DA CONVERTER
AK4519VF
M902
SLED
MOTOR
IC101
SIGNAL
PROCESSOR
IR3R55
2.5V REGULATOR
IC771 62GR2522
2.5V
REGULATOR
IC820
62FP2502
IC401
SYSTEM
MICROCOMPUTER
IX0298AW
RIPPLE
FILTER
VCC VEE
IC702
62GR4522
4.5V
REGULATOR
OPIC
LASER PICK
HEAD
M901
SPINDLE
MOTOR
IC201
ENCODE/DECODE/
SERVO ATRAC
LR37811
+2.7V +2.5V
T F
+2.5V
+2.7V
+2.7V
VDD +2.0V
+2.7V
–2.7V
AVCC +2.5V
+7~+10V
+2.5V
J703
HEADPHONES
LINE
J703
REMOTE
CONTROL
IC802 FDC634P IC801 HN1C01FU OVER VOLTAGE REVERSE CONNECTION PROTECTION CIRCUIT
J801
DC IN JACK
(4~5.5V)
1.7~3.4V
+2.35V
LCD UNIT
KEY OPERATION UNIT
IC901
SPINDLE MOTOR
DRIVER
BA6966FV
IC703
AUDIO AMP.
IR3R54N
IC701
AUDIO AMP.
IR3R54N
IC601
4CH PWM DRIVER
MPC17A39
VM
IC402
EEPROM
S29L294A
+4.5V
VCC
VS
IC202
IX2567AF
4MBIT D-RAM
+2.5V
+4.5V
OPTICAL IN
UNIT
J701
OPTICAL IN
J701
LINE IN
J702
MIC IN
(READY FOR
PLUG/IN
POWER)
2.0V
REGULATOR
IC200
62FP2002
1, 3, 4, 5,
6,19,20
17
16
35
VCC VG
13
24,26 29,31
6,8
5,9,10,14 23,27,28,32
13,14 24,42
40
3
26-29, 32-37, 39-46
1-9, 11-19
14
8,11
4
1
7,9 3,4
57,66
74
15
6
19
5
20 17
20
17
10
6
24 L-CH
22 R-CH
19
Q721
3
1,13
1-2
2,15-17,
19-22
6-9
1-12
1-3
14-16
52, 69, 70, 83, 84
9, 11, 13, 42
82 74
2
2
17-24
50
31
5
3
5
2
8
5
8
52,53
10
+2.7V
82-84,86, 89-100
62
3
3
4
2
1,2,23,24,14
2
7
3
NC
SW402 HOLD
SW902 DISC PROTECT
55
92
4
SW401 EJECT
SW403 DISC LID OPEN
97 98
73
12
PLAYBACK SIGNAL
RECORD SIGNAL
+B
F871 T0.5A L 63V
M
M
M
IC354
CPH5608
HEAD DRIVER
IC353
FTD2005
HEAD DRIVER
3
1
36
Q873
NDS332P
FETIC
Ni - MH Battery
or
Dry Battery
(2 pieces)
+2.7V
+2.7V
1, 20-30, 73, 93-95
R-CH
L-CH
2
R-CH
3
L-CH
3
VCC
L-CH
5
18
R-CH

Sharp MD-MT20 Specifications

General

Brand	Sharp
Model	MD-MT20
Category	MiniDisc Player
Language	English