Block Diagram - Sharp MD-C2 Service Manual

RECORDING
HEAD
MD
M1951
SPINDLE MOTOR
M
PICKUP UNIT
FOCUS
M1953
TRACKING
SLED MOTOR
LIGHT F
RECEIVING
A
M
SECTION
B
ERROR
SIGNAL
E
RF1
LIGHT
RF2
RECEIVING
RF3
SECTION
RF
RF4
LASER DIODE
MONITOR DIODE
SW1930
SW1931
LEAD IN
SW1932
PLAY
SW1933
REC
SW1934
LOADING
SW1935
CARTRIDGE
SW1940
SLOT 1
SW1941
SLOT 2
SW1942
SLOT 3
SW1943
LIFT A
SW1944
LIFT B
IC1601
M56788FP
MOTOR
DRIVER
M1952
M
LOADING MOTOR
BOTH HEAD
UP/DOWN
M1941 IC1602
LB1930M
M
MOTOR
LIFT MOTOR DRIVER
IC1300
6.5/4.75~5.25V
TC74ACT02F
HEAD
DRIVE CIRCUIT
IC1101
E–FSIGNAL A–BSIGNAL
IR3R55
RF SERVO/
SIGNAL
RF1 ~ RF4SIGNAL
CONTROL
3.2V 3.2V
WRITE PRO
DISC ID
6.5/4.75 ~ 5.25V
6.5/4.75 ~ 5.25V
Figure 31 WIRING BLOCK DIAGRAM (1/5)
3.2V
XL1201
(33.8688MHz)
IC1201
LR376484
ENDEC/ATRAC
IX0276AW
MD SYSTEM
MICROCOMPUTER
IC1402
S29294A
EEPROM
IC1202
IX2474AF
3.2V
4M BIT
D–RAM
IC1801
DIGITAL
XC62EP32
3.2V
VOLTAGE REGULATOR POWER
6.5/4.75~5.25V
IC1702
NJM431U
VOLTAGE REGULATOR POWER
3.2V
A/D CONVERTER
D/A CONVERTER
IC1701
UDA1344
– 31 –
MD-C2
IC1401
BACKUP
3.2V
MECHANISM
6.5/4.75~5.25V
AUDIO INPUT
AUDIO OUTPUT
28P FFC
DIGOUT
1
D.GND
2
DIGIN
3
BACKUP
4
5 PDOWN
RESET
6
MD–ST
7
DSCK
8
9 SERCH
10 KDATA
MDDATA
11
DSTB
12
D.GND
13
14 D.GND
D.GND
15
D.GND
16
DVDD
17
DVDD
18
PSWCK
19
LOADSW
20
AVCC
21
L.IN
22
AA.GND
23
R.IN
24
AD.GND
25
26 L.OUT
AA.GND
27
R.OUT
28
CN1501