Sharp MD-C2 Service Manual page 34

MD-C2
3
CD
CIRCUIT 2
CNP99
28P FFC
DIGOUT
1
D.GND
2
DIGIN
3
BACKUP
4
PDOWN
5
RESET
6
MD–ST
7
DSCK
8
SERCH
9
KDATA
10
MDDATA
11
DSTB
12
D.GND
13
D.GND
14
MD
D.GND
15
CIRCUIT
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
CN1501
RECORD/
PLAYBACK HEAD
L
23
2
R
L
16
9
R
QK05
QK06
QK01,QK02
QK03,QK04
QK09
QK07
QK08
QK19
EH
ERASE HEAD
CNP12
RWC
1
WRQ
2
CO IN
3
SQ OUT 4
5
CQ CK
RES 6
DRF
CD CIRCUIT
7
D–GND
8
SLD+
9
SLD– 10
PU IN SW
11
OP/CLOS
12
DISC NO.
13
UP/DWN
14
PCCL 15
12 4
ICG01
8 NAND GATE 7
74HCT00F
QG03 QG02
+B6
+B1
R L
7 18
ICK01
RECORD/
15
PLAYBACK
AMP.
AN7345K +B4
13
12
4 21
R L
BIAS
COTROL
QK16
QK15
LK03
+B3
MK00
TAPE MOTOR
QM01
M
MOTOR DRIVER
PHK00
SWK01
CAM
+B3
SOK00
SOLENOID
QM02
SOLENOID DRIVER
SWK00
FP
Figure 34 BLOCK DIAGRAM (4/5)
CNP303
1
D GND
2
CLK
DO 3
CE 4
DI 5
TUNER
CIRCUIT A+12V 6
A-GND 7
TUN MUTE 8
L
9
R
10
QK13
QK14
REC
MUTE
CONTROL
SWITCHING
+B3
QK10
PB/REC MUTE
PB
QK11
MUTE
QK12
CONTROL
PB/REC
REC BIAS
MOTOR
QM04
CAM-SW
RUN PLSE
QM06
SOL
QM05
FP-SW
– 34 –
+B3
22 MD-DATA
MD-STB
19
VCC
91
100 VREF
+B5
VEE
98
99
AVSS
POWER
54
VLOAD1
53
65
OPE. AMP.
NJM4558MF
JTUU00
AUX IN
SYSTE
MICRO
IX
~ ~
68 70 71 81 83
ICU01
L
TAPE
53
60
R
L
TUNER
54
59
R
L
CD/MD
55
58
R
L
52
61
R
CD
CIRCU