– 27 –
MD-M3/M1
Figure 27 BLOCK DIAGRAM (1/5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
IC1300
TC74ACT02F
HEAD
DRIVER
MD
XL1201
33.8688MHz
IC1202
IX2474AF
4M BIT
D-RAM
A/D CONVERTER
IC1701
UDA1344
D/A CONVERTER
AUDIO INPUT
AUDIO OUT
EXT.
PLL
3.2V
6.5/4.75~5.25V
3.2V
3.2V
DIGITAL
3.2V
3.2V
DIGOUT
D.GND
DIGIN
BACKUP
PDOWN
RESET
MD-ST
DSCK
SERCH
KDATA
MDDATA
DSTB
D.GND
D.GND
D.GND
D.GND
DVDD
DVDD
PSWCK
LOADSW
AVCC
L.IN
AA.GND
R.IN
AD.GND
L.OUT
AA.GND
R.OUT
LRSY
GND
GND
DATA
3.2V
BACKUP
3.2V
6.5/4.75~5.25V
6.5/4.75~5.25V
1
2
3
4
28P FFC
CN1502
MD-M3 ONLY
CN1501
IC1402
S29294A
EEPROM
IC1801
XC62EP32
REGULATOR
IC1702
NJM431U
REGULATOR
MECHANISM
6.5/4.75~5.25V
IC1601
BA5984FP
MOTOR DRIVER
M903
LOARDING MOTOR
BOTH HEAD UP
and DOWN
M
WRITE PRO
DISC ID
LEAD IN SW1953
PLAY SW1954
REC SW1955
LOAD IN SW1956
IC1101
IR3R55
RF
SIGNAL
PROCESSOR
E-F SIGNAL A-B SIGNAL
RF1~RF4 SIGNAL
F
A
B
E
FOCUS
TRACKING
RF1
RF2
RF3
RF4
PICKUP UNIT
RECORDING
HEAD
M
M
IC1201
LR376484
ATRAC ENCODER/DECODER
IC1401
IX0290AW
MD SYSTEM
MICROCOMPUTER
E-F
LIGHT
RECEIVING
SECTION
ERROR,
SIGNAL
LIGHT
RECEIVING
SECTION
RF
LASER DIODE
MONITOR DIODE
SW1952
M901
SPINDLE
MOTOR
M902
SLED
MOTOR
Summary of Contents for CP-M1
Page 74: ...MD M3 M1 74 MEMO ...