Sharp MD-M3 Service Manual page 40

MD-M3/M1
MD-M1
A
IC2
LC78640E
7
SERVO SIGNAL
CONTROL
R12
B
680
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
8
PDO1
13
C81 0V
1
80 0.022
PDO2
0V
2
VVSS
3 0V
PLL
PCKIST
3.27V VCEC
4
26 VVDD
3.27V
5
047
FR
3.27V
6
R14 HFL
R80 0V
7
1.2K
1M
SLCIST
1.1V
8
SLCO
1.6V
9
EFMIN
1.6V
10
JITTV 1.6V
C27 11
C
JITER
0.1 JITTC
1.65V DEFECT
12
CONTROL
BH
0V
13
PH(RFENV)
1.62V
AUTO
14
ADJUST
FE
1.66V
15
TE
1.64V
16
VREF
1.65V
17
ADAVDD
3.27V
18
+
–
0V ADAVSS
19
1.59V PHREF
20
1.65V BHREF
21
1.81V TBLO
22
S/H
1.65V
TDO
23
R44
24
1K
D
25 26 27
2 1
100K
6
K
6
35 15K
38 8.2K
39 15K
40 1K
E
+B
ZD61
DZ5.6B
3.28V
F
L61
0.82µH
+3.3V
C62
100/6.3
G
CD SIGNAL
MD SIGNAL
RECORD SIGNAL
H
• The numbers 1 1 to 13
1
R97
47K
+B
R71 1K
R72 1K
R73 1K
R74 1K
R75 1K
R76 1K
R77 1K
R78 1K
COMMAND
GENERAL
0V
INTERFACE
SBCK
64
0V PW
FRAME SYNC
63
DETECT,PROTECT
0V SBSY
62
INSERT
EFM DECODE 3.26V SFSY
61
0V 16M
60
CLV
0V DATA
CONTROL
59
1.42V DATACK
58
LRSY
1.58V
57
ASDFIN
0V
56
ASDACK
0V
55
ASLRCK
0V
54
XVSS
SW
0V
53
1.48V
XOUT
52
C34
R20
0.022
220
XIN
51
1.47V
XVDD
50
RVDD
3.22V
49
RCHO
1.71V
48
RVSS
0V
47
0V LVSS
46
1.70V LCHO
45
3.22V LVDD
44
3.27V MUTER
43
AUDIO
GENERAL
3.27V MUTEL
OUT
42
0V EMPH
41
28 29 30 31 32 33 34 35 36 37 38 39 40
DOUT
C30
0.1
R16
C31
100/6.3
C90
3.3
Q62
R64
KTC3203 Y
+B 100
+5V 7.02V
5.04V
5.65V
R63
150
C64
47/10
Q61
KTA1271 Y
+7V
+B
7.02V
6.39V
R65
470
4 11 12 5 6 9
10
12 are waveform numbers shown in page 54.
2 3
Figure 40 SCHEMATIC DIAGRAM (8/14)
3
PU-IN
CD_CHACK
+B
VDD5V
DGND
DRF
RES
WRQ
INT
DO
DI
CL
CE
12
11
10
+B
CNS15
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
3
0V
R90
4.7K
7 20 3 2 1 8
24 23 22 21
TO POWER SECTION
P36 2-D~H
4
– 40 –
6
+5V(D)
+B
6
PROGRAM
R98 C85
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
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
V GND(D)
+B
+12V(D)
U
T CD/MD R
GND(A)
S
R CD/MD L
Q GND(A)
P REC R
REC L
O
+B
+12V(A)
N
–B
M –12V(A)
17 18 16 15 14
5 6
FWD03
FWD02
CNW2002