Sharp MD-S301 - Block Diagram

MD-S301/S301W
– 23 –
Figure 23 BLOCK DIAGRAM
26~29 32~37 39~46
25
41
74
42
40
28, 30
73
67, 44
+2.5V
Q852
IC404
REMOTE CONTROL
DRIVER
5, 6
IC101
IR3R55

RF SIGNAL
PROCESSOR
Q101
15
1~9 11~19
IC201
LR376481

ENDEC
3, 5~9, 11
74, 70~72
48~55 37~39
90~100
64 65
97
43
SW452 SKIP DOWN SW453 STOP SW454 VOLUME DOWN SW455 VOLUME UP
17~22, 24
IC601
MPC17A39

PICKUP COIL
DRIVER
2, 15~18, 20, 21
17
24
13
1, 3, 6 20, 19
3-PHASE BRUSH
LEESS DRIVER
IC901
BA6965FV
6, 8, 11, 12
4MBIT D-RAM
DRIVER CONT
M
M
M902
SPINDLE MOTOR
A-B SIGNAL E-F SIGNAL 11, 12
9, 10
1, 2, 3, 4 RF1~RF4 SIGNAL
OPTICAL
PICKUP UNIT
B A E F
TRACKING LASER DIODE
FOCUS
RF1 RF2 RF3 RF4
J701
REMOTE CONTROL/
HEADPHONES
L-CH R-CH
18 19
17
+B+B
70
AUDIO AMP
IC702
IR3R54N
14 16
2, 4 7, 16 22, 23 24
+B
5, 11 15
1, 2, 3, 6
D/A
CONVERTER
IC501
UDA1320
10
7, 5, 3
1~4
4
5
IC403
TC7W14FU
INVERTER
E
2
PROM
IC402
S29L294A
+B+B
88
11, 1486~88
+B
9, 23, 24 36, 81
IC401
IX2677AF

SYSTEM
MICROCOMPUTER
91, 16~19
82~84, 86
XL201 33.868MHz
SW401
HOLDSW
SW901
DISC IN
SW451 PLAY/SKIP UP
ENDEC
AUDIO
D/ACONVERTER
LASER
MOTOR DRIVER
12, 33, 72
IC405
RESET
D402
+B
+B
4
2
1
15
POWER DRIVE

IC831, IC832 IC821, IC851
IC871
TK71325M
POWER SUPPLY
MICROCOMPUTER
4
2, 3
5
SYSTEM MICROCOMPUTER
MOTOR DRIVE
CHARGE DRIVE
ON/OFF
D801 Q801
CONSTANT
CURRENT DRIVE

IC812
IC861, 
862, 863
START UP DRIVE
2~4
INTERNAL BATTERY 3.6V
BATTERY 1.5V
1
J801
EXTERNAL BATTERY
DC JACK
(DC IN 5V)
+B
12, 62, 68,  78, 87
IC202
IX2567AF
4M BIT
D-RAM
20
+B
10
+B
5, 9, 10, 14 23, 27, 28, 32
1, 4, 7, 12, 19,
22 , 25, 30, 33
1015
+B
LASER POWER
CONTROL
M902
SLED MOTOR
MD
+B
13, 14, 24, 42 18, 19, 43
1
2
4

25~30, 40
4,13~16 38, 60, 63 9, 88
2~7
SLED MOTER
DRIVER
4, 7, 8
9, 13
8, 10, 12
57
90
S-80821ALNP
Q871
L R AGND DGND KEY PLAY DATA EL+B
2
3 4
5 1
7
8 6