Sharp CD-C449W Service Manual page 25

+B
29 C28
/50 0.1
R44
33K
C26
0.033
R41
R42
47K
47K
C25
R40
27P
5.6K
R39
R43
1K
56K
R38
C23
470
0.0027
HF
C22 C57
220P 0.001
D1
1SS133
R47
10K
C37
0.022
D3
D4
RL104A
RL104A
1 2 3 4 5 6 7 8 9
CNP12
FROM MAIN PWB
• The numbers 1 to 12
7
R57 1K
R58 1K
R59 1K
R60 1K
R61 1K
R62 1K
R63 1K
C38
0.01
64 63 62 61 60 59 58 57 56 55 54 53
TEST1
0V
DEFI
1
2
µ-COM
TA1
0V
R50 INTERFACE
680
IC2
3
0V PDO
LC78622K
R51 3.3M
4
VVSS
SERVO/SIGNAL
0V
C40
CONTROL
0.047
2K x8BIT
5
ISET
RAM
2.2V
R52
27K
5V
VCO CLOCK
ERROR CORRECT
6 VVDD
OSC CONTROL FLAG CONTROL
7
1V FR
R53
1.2K
0V
VSS
8
2.5V
EFMO
9
SLICE LEVEL SYNC-DETECT
EFMIN
2.5V
CONTROL
10 EFM DEMODULATE
0V
11
TEST2
0V CLV+
12
CLV
0V CLV–
13 DIGITAL SERVO
5V
14
V/P
15
SERVO EXTERNAL
HFL
COMMAND OUTPUT
16
TES
24 25 26 27 28 29 30 31
17 18 19 20 21 22 23
+B
IC81
TA7291S
LOADING
MOTOR DRIVER
1 2 3 4 5 6 7 8 9
+B
R83 R82
C82
3.9K 6.8K
47/16
R85
56
10 11 12 13 14
CNSF12
P24 1-D
are waveform numbers shown in page 18.
8 9
Figure 23 SCHEMATIC DIAGRAM (2/15)
CD SIGNAL
52 51 50 49
EFLG
C41
48
12P
47
SUB-CODE
SBSY
C42
XVSS
46
15P
XIN
45
X-TAL R93 @ 220
44
GENERATOR
XOUT
D82
XVDD
43
1SS133
C53
0.022
D81
1SS133
42
MUTER
41
RVDD
40
RCHO
R72
C72
39
RVSS
2.7K
4FS 1BIT 10/50
LVSS 38
DIGITAL DAC
C43
R71
FILTER
330/6.3
LCHO 2.7K
37
C71
LVDD
36
MUTEL 10/50
35
PCCL 34
TEST4 33
DIGITAL
OUT
32
R54
330
Q51
KRC107 M
3
2
L61
1 0.82µH
C50
C51
3.3/16
100/16
R80
R81
6.8K
3.9K
Q91
KTA1271 Y
R87
Q93
10K
KRC102 M
3 2
D91
1SS133
R86
1
2.2K
CD SERVO PWB-B
10
– 23 –
CD-C449W/K449W
+B
R74 C74
CNP11
560 0.001
1 CD R-CH
R73 C73
GND(AU)
2
560
0.001
CD L-CH
3 FROM MAIN PWB
GND(CD)
4
+7.3V
5
+B
12V(M)
6
+B
1 1 DOUT
+B
+4.3V
2 2
TO MAIN PWB
GND
3 3
Q52
KTC3203 Y
R66
R64
330
22
+B
+B
1 SOL
1
GND(M)
2 2
M–
3 3
4 M+ 4
GND(D)
5 5
OPEN
6 6
/CLOSE
7 DISC NO. 7
8
GND(D) 8
9 MECHA UP 9
10 GND(D) 10
GND(D)
11
CNSF11
P24 1-B
CNPR11
P27 12-D
SOLENOID2
LOCK
1
2
M3 T/T
–
3 UP/DOWN
M
+ LOADING
4
MOTOR
5 SW1
OPEN
6
CLOSE
SENSOR PWB-J
SW2
MECHA UP
SW3
1 1
DISC NUMBER
2 2
CNS5
12