Sharp MD-M3 Service Manual page 39

MD-M3
IC2
LC78640E
7
SERVO SIGNAL
R12 CONTROL
C23
0.047 680 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
8
PDO1
C24 R13 C81 0V
1
2/50
680 0.022
PDO2
0V
2
VVSS
0V
3
PLL
PCKIST
3.27V VCEC
4
C26 VVDD
3.27V
5
0.047
FR
3.27V
6
R80 R14 HFL 0V
7
1M 1.2K
22 SLCIST 1.1V
8
00P
SLCO 1.6V
9
R15 EFMIN
1.6V
10
0K
JITTV 1.6V
C27
11
JITER
0.1
JITTC 1.65V
DEFECT
12
CONTROL
BH 0V
13
PH(RFENV)
1.62V
AUTO
14
ADJUST
1.66V FE
15
1.64V TE
16
VREF
1.65V
17
ADAVDD
3.27V
18
+
ADAVSS –
0V
19
1.59V PHREF
20
BHREF
1.65V
21
TBLO
1.81V
22 S/H
1.65V
TDO
23
R44
24
1K
25 26 27
2 1
R16
100K
R36
15K
6
R35 15K
R38 8.2K
R39 15K
R40 1K
+B
ZD61
DZ5.6B
3.28V
L61
0.82µH
+3.3V
C62
100/6.3
GNAL RECORD SIGNAL
• The numbers 1 1 to 13 12 are waveform numbers shown in page 54.
7
R97
47K
+B
R71 1K
R72 1K
R73 1K
1K
R74
1K
R75
R76 1K
R77 1K
R78 1K
COMMAND
GENERAL
INTERFACE 0V
SBCK
64
PW
0V
FRAME SYNC 63
DETECT,PROTECT SBSY
0V
62
INSERT
EFM DECODE 3.26V SFSY
61
0V 16M
60
CLV
0V DATA
CONTROL
59
1.42V DATACK
58
LRSY
1.58V
57
0V ASDFIN
56
0V ASDACK
55
0V ASLRCK
54
XVSS
SW
0V
53
1.48V
XOUT
52
C34
R20
0.022
220
XIN
51
1.47V
XVDD
50
3.22V RVDD
49
1.71V RCHO
48
0V RVSS
47
0V LVSS
46
1.70V LCHO
45
3.22V LVDD
44
3.27V
MUTER
43
AUDIO
GENERAL
OUT 3.27V MUTEL
42
0V EMPH
41
28 29 30 31 32 33 34 35 36 37 38 39 40
DOUT
C30
0.1
C31
100/6.3
C90
3.3
Q62
R64
KTC3203 Y
100
+B
+5V 7.02V
5.04V
5.65V R63
150
C64
47/10
Q61
KTA1271 Y
+7V
+B
7.02V
6.39V
R65
470
4 5 6 9
11 12 10
8 9
Figure 39 SCHEMATIC DIAGRAM (7/14)
3
PU-IN
CD_CHACK
+B
VDD5V
DGND
DRF
RES
WRQ
INT
DO
DI
CL
CE
12
11
10
R81
120
+B
R82 CNS15
120
R83
120
R18 C35
1M 8.2P(CH)
XL1
16.934MHz
2
C37
47/10
1
C39
0.022 0V
3
C38
0.022
R19
10
0V
9
0V
R87
120
2
4.38V
1
0V
0V 3
R90
4.7K
7 20 3 2 1 8
24 23 22 21
TO POWER SECTION
P36 2-D~H
10
– 39 –
MD-M3/M1
6
+B +5V(D)
6
PROGRAM
C85
R98
5
47K 0.001
PUIN (CLK)
4
LID SW(DATA)
3
RESET
R92
2
47K
GND(D)
1
1
CNP11
R93
28
10K
VF2
28
–31(VP)
27
VF1
26
POWER ON
25
AMP HPSW
24
AMP TEMP
23
AMP LEVEL
22
DRF
21
WRQ
20
INT
19
CE
18
CL
17
CD SO
16
V LOAD
15
CD SI
14
CD RES
13
MDDATA
12
SERCH
11
PDOWN
10
MD-ST
9
MD RES
8
DSCK
7
KDATA
6
MD DSTB
5
LOADSW
4
AMP FAN
3
SY MUTE
2
AMP MUTE
1
1
CNP12
DATA
4
D.GND
3
DATACK
2
LRSY
1
CNP13
1
DIGOUT
1
D.GND
2
DIGIN
3
BACKUP
4
PDOWN
5
RESET
6
MD-ST
7
DSCK
8
SERCH
9
KDATA
10
R91 MDDATA
11
4.7K
DSTB
12
D.GND
C83
13
0.001
D.GND
14
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
L.OUT
26
AA.GND
27
R.OUT
28
28
CNP14
GND(D)
V
+B
+12V(D)
U
CD/MD R
T
GND(A)
S
R CD/MD L
Q
GND(A)
P REC R
O REC L
+B
N +12V(A)
–B
M
–12V(A)
17 18 16 15 14
11 12
FWD03
FWD02
CNW2002