Block Diagram - Sharp MD-M3 Service Manual

RECORDING
HEAD
MD
M901
M
SPINDLE
MOTOR
M902
PICKUP UNIT
SLED
MOTOR
M
FOCUS
LIGHT
TRACKING
RECEIVING
F
SECTION
A
ERROR,
B
SIGNAL
E
RF1
LIGHT
RF2
RECEIVING
RF3
SECTION
RF4
RF
LASER DIODE
MONITOR DIODE
SW1952
M903
M
LOARDING MOTOR
BOTH HEAD UP
and DOWN
IC1300
6.5/4.75~5.25V
TC74ACT02F
HEAD
DRIVER
IC1101
IR3R55
E-F SIGNAL A-B SIGNAL
RF
SIGNAL
RF1~RF4 SIGNAL
PROCESSOR
E-F
3.2V
3.2V
WRITE PRO
DISC ID
LEAD IN SW1953
PLAY SW1954
REC SW1955
LOAD IN SW1956
IC1601
BA5984FP
MOTOR DRIVER
6.5/4.75~5.25V
Figure 27 BLOCK DIAGRAM (1/5)
3.2V
XL1201
33.8688MHz
IC1201
LR376484
ATRAC ENCODER/DECODER
IX0290AW
MD SYSTEM
MICROCOMPUTER
3.2V
IC1402
S29294A
EEPROM
IC1202
3.2V
IX2474AF
4M BIT
D-RAM
IC1801
DIGITAL
XC62EP32
3.2V
REGULATOR
6.5/4.75~5.25V
IC1702
NJM431U
REGULATOR
3.2V
A/D CONVERTER
D/A CONVERTER
– 27 –
MD-M3/M1
EXT.
PLL
CN1502
MD-M3 ONLY
28P FFC
BACKUP
IC1401
MECHANISM
6.5/4.75~5.25V
CN1501
AUDIO INPUT
IC1701
UDA1344
AUDIO OUT
1 LRSY
2 GND
3 GND
4 DATA
1
DIGOUT
2
D.GND
3
DIGIN
4
BACKUP
5
PDOWN
6
RESET
7
MD-ST
8
DSCK
9
SERCH
10
KDATA
11
MDDATA
12
DSTB
13
D.GND
14
D.GND
15
D.GND
16
D.GND
17
DVDD
18
DVDD
19
PSWCK
20
LOADSW
21
AVCC
22
L.IN
23
AA.GND
24
R.IN
25
AD.GND
26
L.OUT
27
AA.GND
28
R.OUT