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CD-MD3000 (serv.man31). Block diagrams - Sharp Audio Service Manual (repair manual). Page 7

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– 53 –
CD-MD3000H/CD-MD3000W
 Figure 53 BLOCK DIAGRAM (7/7)
1 2 3 4
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
D GND
D GND
RESET
MD-ST
DSCK
KDATA
MDDATA
DSTB
D GND
D GND
DVDD
DVDD
PCONTO
LOADSW
AVCC
L OUT
AA GND
R OUT
SERCH
AD GND
R IN
AA GND
L IN
DIG OUT
D GND
DIG IN
BACKUP
P DOWN
CDLRCK
CDBCLK
GND
CDDATA
BACKUP
70 34 25 12 20 33 21 32 31
MECHANISM
+4.75~5.25V
+3.2V
IC1402
58X2402T
EEPROM
30
29
98
5
6
8
IC1801
XC62EP32
REGULATOR
3
AUDIO IN
AUDIO OUT
IC1702
NJM431U
REGULTOR
1
2
3 5
24
26
3
+3.2V
MECHANISM
+4.75~5.25V
+3.2V
IC1401
IX0349AW
MD SYSTEM
MICROCOMPUTER
58
67
66
+3.2V
DOUT DIN
A/D
CONVERTER
D/A
CONVERTER
IC1701
UDA1345
AD/DA
CONVERTER
IC1202
IX2474AF
4M-BIT
DRAM
5
9
11
15
~
~
26
29
~
32
36
42
~
IC1201
LR37814
ENDEC/ATRAC
XL1201
33.8688MHz
IC1101
IR3R58M
RF SIGNAL
PROCESSOR
+3.2V
+3.2V
MECHANISM
+4.75~5.25V
E-F SIGNAL A-B SIGNAL
RF1~RF4 SIGNAL
IC1601
M56788FP
MOTOR DRIVER
12
10
15
M
M903
MD LOADING
MOTOR
SW1932
LOADING
SW1934
PLAY
SW1936
LEAD IN
MONITOR
DIODE
LASER
DIODE
RF4
RF3
RF2
RF1
LIGHT
RECEIVING
SECTION
ERROR
SIGNAL
LIGHT
RECEIVING
SECTION
RF
M
M902
MD SLED MOTOR
F
A
B
E
SW1933
RECODE
SW1931
DISC MEDIA
SW1930
WRITE PRO
M
M901
MD SPINDLE
MOTOR
MD PICKUP UNIT
FOCUS
TRACKING
MAGNETIC
HEAD
(RECORD)
+4.75~5.25V
IC1300
74ACT02T
HEAD
DRIVER
65
64
MD
R
L
R
L
IX
XO
CN1501
CN1502
TO MAIN UNIT
TO MAIN UNIT
57
59
+3.2V
IC1802
XC62FP262P
REGULATOR
3
+2.6V
2
5 13
2
40
29
1
3
37
4
73
74
ADDATA
DADATA
18
19
~
EFMO
EFMI
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