Sharp MD-X5H - Block Diagram

MD-X5H/CP-X5H
– 36 –
Figure 36 BLOCK DIAGRAM (1/4)
D6.5/4.75 ~ 5.25V
MECHAN1SM 6.5/4.75~5.25V
D3.2V
AVCC DVDD DVDD
D3.2V
DIGITAL 3.2V
D3.2V
D4.3V
A3.2V
D4.3V
D3.2V
D4.3V
D3.2V
BACKUP
VOLTAGE
REGULATOR 
POWER
VOLTAGE
REGULATOR 
POWER
E
2
PROM
MOTOR 
DRIVER
IC1601
AUDIO INPUT
AUDIO OUTPUT
BACKUP
MD MICRO COMPUTER
MD
CONTROL
MICRO
COMPUTER
DIGIN(EIAJ)
PDOWN
DIGOUT(EIAJ) GND GND
1 2 4
3
PLL
D/A
CONVERTOR
A/D
CONVERTOR
R.IN R.OUT AA.GND AD.GND AA.GND L.IN L.OUT
LOAD IN
RESET MD-ST DSCK SERCH
1 2
24 23 22 21
20
19 18 17 16 15 14
4 5 6 7 8 9
13 10
11
12
3
D.GND D.GND D.GND D.GND DSTB MDDATA KDATA
4M
DRAM
ENDEC
ATRAC
IC1201
OSCILLATOR
XL1201
(33.8688MHz)
SW1956 SW1955 SW1954 SW1953 SW1952
Q1251~Q1254
MD
RECORDING HEAD
M901 SPINDLE MOTOR
M902
SLED MOTOR
M903
LOADING SWITCH RECSWITCH PLAYSWITCH LEAD INSWITCH
A–BSIGNALE–FSIGNAL
RF1 ~ RF4SIGNAL
HEAD DRIVE
SIGNAL
IC1251
RF
SERVO/SIGNAL
CONTROL
IC1101
LOADING MOTOR
HEAD UP/DOWN
M
M
DIRECT SWITCH WRITE PRO
M
LASER DIODE
MONITOR DIODE
RF4 RF3 RF2 RF1
LIGHT
RECEIVING
SECTION
ERROR
SIGNAL
LIGHT
RECEIVING
SECTION
RF
F A B E
FOCUS
TRACKING
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