MD-X8H
– 34 –
Figure 34 BLOCK DIAGRAM (1/4)
D6.5/4.75 ~ 5.25V
MECHANISM, ACTUATOR
6.5/4.75V5.25V
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
IC1802
NJM431U
REGULATOR
IC1402
E
2
P ROM
S29294A
IC1601
5-CH MOTOR
DRIVER
M56758FP
IC1801
XC62EP32
VOLTAGE
REGULATOR
AUDIO INPUT
AUDIO OUTPUT
BACKUP
MD MICON
IC1401
MD SYSTEM
MICON
CONTROL
IX0227AW
DIGIN(EIAJ)
PDOWN
DIGOUT(EIAJ)
GND
GND
1
2
4
3
D/A
CONVERTER
IC1701
A/D
CONVERTER
UDA1340
R-CH.IN
R-CH.OUT
AA.GND
AD.GND
AA.GND
L-CH.IN
L-CH.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
IC1202
4M BIT
DRAM
IX2474AF
IC1201
ENDEC
LR37648
OSCILLATOR
XL1201
(33.8688MHz)
SW1955
SW1954
SW1953
SW1952B
SW1952A
Q1251~Q1254
MD
RECORD HEAD
M901
SPINDLE MOTOR
M902
SLED MOTOR
M903
MD RECORD
MD PLAY
LEAD IN
DIRECT
A–B SIGNAL
E–FSIGNAL
RF1 ~ RF4 SIGNAL
HEAD DRIVER
CIRCUIT
IC1251
74ACT02F
IC1101
RF SIGNAL
PROSESSOR
IR3R55
LOADING MOTOR
M
M
WRITE PRO
M
LAZER DIODE
MONITOR DIODE
RF4
RF3
RF2
RF1
FOR LIGHT
RECEIVING
SECTION
ERROR
SIGNAL
FOR LIGHT
RECEIVING
SECTION RF
F
A
B
E
FOCUS
TRACKING
OPTICAL PICKUP UNIT
CNP1904
CNS1902
IC1906
AND GATE
TC7ST08F
IC1907
CLOCK
GENERATOR
TC9246F IC1990
INVERTOR
74AC04FS
IC1916
AND GATE
74VHC08F
SW1956
LOADING
Содержание MD-X7H
Страница 28: ...MD X7H MEMO 18 ...
Страница 29: ...MD X7H MEMO 19 ...