Sharp CDC2900 - 3-CD Compact Stereo System Service Manual page 21

R57 1K
R58 1K
R59 1K
R61 1K
R62 1K
R63 1K
+B
R51
3.3M
C39 R50
0.047 680
C40
0.047
R52
27K
R53
1.2K
C22
11
220P
+B
C57
0.001
33
PCCL
OP/CLOS
DISC NO.
UP/DOWN
3 4 5 6 7 8 9 10 12 13 14
11 15
CNS12
P29 12 - B
TO DISPLAY PWB
• The numbers 1 to 12 are waveform numbers shown in page 16.
7
C38
0.01
60 59 58 57 56 55 54 53 52 51 50
64 63 62 61
-COM
INTERFACE
DEF1
1
2
TA1
PDO 2KX8
3
RAM
4 VVSS
5
ISET
ERROR COERECT
FLAG CONTROL
6 VVDD
FR
7
8 VSS
EFMO
SLICE
9 SYNC-DETECT
LEVEL
EFM DEMODULATE
EFMIN
10
CONTROL
IC2
TEST2
11
LC78622NE
CLV+
CLV
12
SERVO/SIGNAL
DIGITAL
CLV_
13
SERVO CONTROL
V/P
14
HLF
EXTERNAL
15
SERVO
TES
OUTPUT
COMMAND
16
20 21 22 23 24 25 28
17 18 19 26 27
+B
C56
0.022
R82
R80
390
820
R81
820
2 3
D93
1
1SS133
R84
2.2K
Q51
KRC102 M
8 9
Figure 21 SCHEMATIC DIAGRAM (2/10)
CD SIGNAL
+B
49
EFLG
48
XL1
NC
C41
SUB-CODE SBSY 16.934 MHz
12P
47
NC
C42
46
XVSS
15P
XIN
45
X-TAL
XOUT R93
44
GENERATOR
220
XVDD
43
MUTER
42
NC
C72
RVDD 41
10/50
RCHO
40
R72
R74
39
RVSS
2.7K
4FS
100K
DIGITAL
FILTER
R71 R73
LVSS 38 C71
2.7K 100K
LCHO 10/50
37
LVDD
36
R55
MUTEL
+B
35
100
NC
C43
34 330/6.3
R65
TEST4
33
1K
L61
0.82 H
DIGITAL +B
OUT
C50
0.022
29 30 31 32
+B
+B
BI1B +B
R54
2
330
1
+B
+B
D91
1SS133
1 SOL+
2 SOL–
M–
3 M–
M+
M+
4
GND(D)
5
DISC NO.
6
CD_D_NO
OPEN CLOSE
7
8 GND(D)
9 MECHA UP
10
GND(D)
CNP10
10
– 21 –
CD-C622/C2900
R-CH
1
A_GND
2
CD_RCH
L-CH
C74 3
220P D-GND
4
A_GND
+7V
5
C73
220P +12V
6
CD_LCH
Q52
KTC3203 Y
+B
R66
220
R64
22
+B
+B
BI1A
2
1
3
2
+B
1
CD SERVO PWB-B
SOLM2
SOLENOID
LOCK
BIM05
1 1
M3
2 2
T/T
–
3
3 M UP/DOWN
LOADING
4
4
+
5
5 SW1
OPEN
6 6
CLOSE
7
SENSOR PWB-D
8
9
SW2
MECHA UP
10
CNS10
DISC NO
1 1 SW3
DISC NUMBER
2 2
CNS5
11
P24 1 - B
CNS11
TO MAIN PWB
P25 10 - B
CNS99
TO DIGITAL
OUTPUT PWB
12