Sharp MS722 Service Manual - Page 29

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MD-MS722/C/W/MS721W Figure 29 BLOCK DIAGRAM - 29 - M903 LIFT MOTOR IC651 MOTOR DRIVER 7,9 LB1930M 3,4 VCC 1 +2.8 +4.5 1,12 +2.5 IC202 16BIT D-RAM IX2723AF 2-5, 7-12, 14-23 MAGNETIC HEAD +2.8 LASER +2.5 OPIC PICK F T M901 SPINDLE MOTOR 1,6 19,20 IC901 3-PHASE BRUSHLESS DRIVER 17 BA6965AF +2.5 M902 SLED MOTOR +2.8 14 IC351 VCC 4 HEAD DRIVER 74ACT02T 8,11 VS 13 IC101 RF SIGNAL 1-4 PROCESSOR 25-30,40 IR3R55 13,14 24,42 24,26 29,31 13 +2.5 IC601 PWM DRIVER 17A39TD VCC VM 35 6,8 2,15-17, 19-22 +2.5 IC402 EEPROM S29L294A AVCC +2.5 50 52,53 3,5-9,11 17-24 2 26-30, 32-37, 39-46 57,66 IC201 ENDEC LSI LR37811 55,58 59, 70-74 82-84,86 89-100 VDD +2.0 2 IC200 2V REGULATOR 3 62FP2002 1,20-30, 76,93-95 IC401 SYSTEM MICROCOMPUTER IX2772AF 14-16 1-3 69, 72, 9, 10, 42,48 73, 13 83, 84 1-3 DISPLAY UNIT OPERATION UNIT 5,6 10,12 IC701 AUDIO AMP IR3R54N VCC VEE 20 17 22,24 7-12, 15,17 IC501 3,6 AD/DA CONVERTER AK4519VF 19,20 5,6 4 +2.5 IC771 5 TK71225M 2.5V REGULATOR IC703 AUDIO AMP IR3R54N VCC VEE 20 17 18,19 OPTICAL IN UNIT J701 +2.8 DIGITAL INPUT J701 LINE INPUT RIPPLE FILTER J702 MIC IN Q721 (READY FOR PLUG-IN POWER) +4.5 4 IC871 TK71345M +4.5V REGULATOR 5 J703 HEADPHONES LINE +2.8 -2.5 +2.5 +6~8 3 33 12 IC850 POWER DRIVE IR3M09N VCC 8 4 IC820 12 POWER DRIVE IR3M09N VCC 8 +2.35 2 SERIES 3 REGULATOR J703 REMOTE CONTORL OVER VOLTAGE, REVERSE-CONNECTION PROTECTION CIRCUIT J801 DC IN (+4~+5.5V) RECHARGEABLE BATTERY (+2.9~+4.1V) BATTERY CASE (BOOSTER CIRCUIT BUILT-IN) (+3.4V)

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MD-MS722/C/W/MS721W
– 29 –
Figure 29 BLOCK DIAGRAM
IC651
MOTOR DRIVER
LB1930M
VCC
IC351
HEAD DRIVER
74ACT02T
VCC
VEE
BATTERY CASE
(BOOSTER CIRCUIT
BUILT-IN)
RECHARGEABLE
BATTERY
M903
LIFT MOTOR
IC850
POWER DRIVE
IR3M09N
IC820
POWER DRIVE
IR3M09N
IC501
AD/DA
CONVERTER
AK4519VF
M902
SLED MOTOR
IC101
RF SIGNAL
PROCESSOR
IR3R55
IC771
TK71225M 2.5V
REGULATOR
IC200
2V REGULATOR
62FP2002
IC401
SYSTEM
MICROCOMPUTER
IX2772AF
RIPPLE
FILTER
VCC
VEE
IC871
TK71345M
+4.5V REGULATOR
OPIC
LASER
PICK
MAGNETIC
HEAD
M901
SPINDLE
MOTOR
IC201
ENDEC LSI
LR37811
+2.8
+2.5
T
F
+2.5
+2.5
+2.5
+2.8
+2.8
VDD
+2.0
+2.8
+2.5
–2.5
AVCC
+2.5
+6~8
+2.8
J703
REMOTE
CONTORL
J801
DC IN
(+4~+5.5V)
(+2.9~+4.1V)
(+3.4V)
VCC
VCC
+2.35
DISPLAY UNIT
OPERATION UNIT
IC901
3-PHASE BRUSHLESS
DRIVER
BA6965AF
IC703
AUDIO AMP
IR3R54N
IC701
AUDIO AMP
IR3R54N
IC601
PWM
DRIVER
17A39TD
VM
VCC
IC402
EEPROM
S29L294A
+4.5
VCC
VS
IC202
16BIT D-RAM
IX2723AF
+2.5
+2.5
+4.5
OPTICAL IN
UNIT
J701
DIGITAL INPUT
J701
LINE INPUT
J702
MIC IN
(READY FOR
PLUG-IN POWER)
J703
HEADPHONES
LINE
1,6
19,20
17
13
24,26
29,31
6,8
13,14
24,42
25-30,40
3,5-9,11
26-30,
32-37,
39-46
2-5,
7-12,
14-23
14
8,11
4
1
7,9
3,4
57,66
55,58
59,
70-74
7-12,
15,17
1,12
3,6
19,20
5,6
20
17
20
17
10,12
5,6
22,24
18,19
Q721
8
8
13
1-4
35
2,15-17,
19-22
1-3
1-3
14-16
69,
72,
73,
83,
84
9,
10,
13
42,48
2
17-24
50
4
5
12
3
3
3
12
2
3
4
5
82-84,86
89-100
52,53
2
3
4
1,20-30,
76,93-95
SERIES
REGULATOR
OVER VOLTAGE,
REVERSE-CONNECTION
PROTECTION CIRCUIT