Sharp CD-PC672 Service Manual page 18

R57 1K
R58 1K
R59 1K
R61 1K
R62 1K
R63 1K
R51
3.3M
C39
0.047 R50
680
C40
0.047
R52
27K
R53
1.2K
10
12
13
14
16
C56
C57
0.022
0.001
R82
390
1SS133
R47
10K
C37
0.022
6
7 8 9 10 11 12 13 14 15
CNS12
M DISPLAY PWB
P29 12-D
• The numbers 1 to 12 are waveform numbers shown in page 41.
7
C38
0.01
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50
MICRO-COM
SUB-CODE
INTERFACE
DEF1
1
TA1
2
X-TAL
GENERATOR
PDO
2KX8
3
RAM
IC2
VVSS
4
LC78622N
ISET
5
VCO
ERROR
CLOCK
COERECT
OSC
FLAG
CONTROL
CONTROL
VVDD
6
FR
7
VSS
8
EFMO
9
SLICE SYNC-DETECT
LEVEL
EFMIN EFM DEMODULATE
CONTROL
SERVO/
TEST2
11
CLV+ SIGNAL
CLV
DIGITAL
CLV–
CONTROL
SERVO
V/P
HLF
EXTERNAL
15
SERVO
OUTPUT
TES
COMMAND
17 18 19 20 21 22 23 24 25 26 27 28 29 30
R80
R83
390 820
R81
820
D93
R84
2.2K
Q51
KRC102 M
8 9
Figure 21 SCHEMATIC DIAGRAM (2/12)
49
EFLG
C41
48
NC SBSY 12P
47
NC
C42
XVSS 46
15P
XIN
45
R93
XOUT
44
220
XVDD
43
MUTER
42
NC
C72
RVDD 41
10/50
RCHO
40
R72 R74
RVSS
39
220P
100K
2.7K
R71
R73
C71
LVSS
38
2.7K
100K
10/50
LCHO
37
LVDD
36
R55
MUTEL
35 C43
100
330/6.3
NC
34
TEST4 33
R65
L61
1K
0.82µH
DIGITAL
OUT
31 32
PIN27
TRY SPEED
HIGH
LOW
BI1-B
2
R54
1
330
+B
D91
1SS133
SOL+
1 1
SOL–
2 2
M+
M+
3 3
M–
M–
4 4
GND(D)
5 5
OPEN CLOSE
6 6
CD_D_NO
DISC NO.
7 7
GND(D)
8
8
MECHA UP 9
9
GND(D)
10 10
CNS10
CNP10
CD SERVO PWB-B
10
– 21 –
CD-PC672
R-CH
1
A_GND
2
CD_RCH
L-CH
3
C74
D-GND
4
A_GND
+7V
5
C73
+12V
220P
6
CD_LCH
CNP11
Q52
KTC3203 Y +B
R66
220
R64
22
C52
100/16
+B
BI1-A
2
3
1
2
1
CD SIGNAL
SOLM2
SOLENOID
M3
TURNTABLE
UP/DOWN
1
LOADING MOTOR
2
–
3
M
4
+
5 SW1
6 OPEN/CLOSE
CD SENSOR PWB-E
SW2
MECHA UP
SW3
1 1
DISC NUMBER
2 2
CNS5
11
3
2
1
12