Sharp CD-K491W Service Manual page 23

0.047
R52
27K
C23
0.0027
C22
220P
C57
0.001
D1
SS133
4A
2 3 4 5 6 7 8 9 10 11 12 13 14
CNSF12
TO MAIN PWB
P24 1-D
• The numbers 1 to 12
7
R57 1K
R58 1K
R59 1K
R61 1K
R62 1K
R63 1K R60
1K
C38
0.01
64 63 62 61 60 59 58 57 56
µ-COM
INTERFACE
0V DEF1
1
R51
0V TA1
2
3.3M
C39
0V
R50
PDO 2Kx8
3
680 RAM
0V VVSS
4
1.9V
ISET
5
C40
0.047 VCO CLOCK
ERROR COERECT
OSC CONTROL
FLAG CONTROL
4.8V
VVDD
6
0V
FR
7
R53 1.2K
0V
VSS
8
2.5V EFMO
SYNC-DETECT
9
SLICE LEVEL
EFM DEMODULATE
EFMIN
2.5V
CONTROL
10
0V
TEST2
11
0V CLV+
12
CLV
0V CLV2
DIGITAL SERVO
13
4.8V V/P
14
HLF
0V
15
SERVO
TES
0V
COMMAND
16
11
17 18 19 20 21 22 23
4.8V
4.8V
IC2
LC78622K
SERVO/SIGNAL
CONTROL
C56
0.022
CD2LD2M–
+B
IC81
TA7291S
LOADING MOTOR DRIVER
R81
3.9K
1 2 3 4 6 8 9
5 7
C82
R82
47/16
6.8K
R85
56
(1/2W)
are waveform numbers shown in page 52.
8
Figure 23 SCHEMATIC DIAGRAM (2/20)
55 54 53 52 51 50 49
EFLG
48 2.2V
SBSY
SUB-CODE
47 0V
0V
XVSS 46
XIN 2.1V
45
X-TAL
XOUT 2.2V
44
GENERATOR
4.8V
XVDD
43
MUTER
42 4.8V
4.5V
RVDD
41
RCHO
40 2.0V
0V
RVSS 39
4FS
DIGITAL
FILTER
0V
LVSS
38
LCHO
37 0V
4.5V
LVDD 36
4.8V
MUTEL
35 NC
34
0V
TEST4 33
0V R55
150
EXTERNAL DIGITAL
OUTPUT
OUT
24 25 26 27 28 29 30 31
32
R54
330
Q51
KRC107 M
2 0V
3
0V
R80
1
6.8K
0V
+B
Q91
KTA1271 Y
0V
12V
Q93
12V
KRC102 M
3 2 12V
0V R86
1 2.2K
0V
SOL
M–
M+
CD2D2NO
CNP10
9 10
– 23 –
CD SERVO PWB-B
+B
C41
12P
XL1
16.934MHz
C42
15P
R93
220
C83
0.022
Q52
KTC3203 Y
+B
C43
330/6.3
R66
R64 330
22
L61
0.82µH
C52
100/16
+B +7.3V
BI99
1 1
CNPR11
2 2
TO MAIN PWB
3 3
P28 2-C
CNS99
+B
SOLENOID 2
BIM05
SENSOR PWB-J
SOL
1 1 1
GND(M)
2 2 2
–
M–
3 3 3
M
M+
4 4 4
+
GND(D)
5 5 5
OPEN CLOSE
6 6 6
DISC NO.
7 7
GND(D)
8 8
MECHA UP
9 9
SW2
GND(D)
10 10
MECHA UP
CNS10
1 1
2 2
CNS5
11
CD-K491W
TO MAIN PWB
CD-GND
1
P24 1-C
+7.3V
2 CNSF11
+12V
3
CNP11
+B
+B
LOCK
M3 T/T
UP/DOWN
LOADING
SW1
OPEN/
CLOSE
SW3
DISC
NUMBER
12