Sharp CD-C470H Service Manual page 23

+B
+B
C50
0.1
R38
34
33K
033
6
R37
C41
K
47K
0.047
2 R34
P 1K
2
K
5
C31
0
0.0027
C53
220P
C21 C90
1/50
0.01
D2
1SS133
D7
RL104A
4A
4A
C46 R49
0.022 10K
UIN
21 20 19 18 17 16 15 14 13 12
TO MAIN SECTION
P26 1-B
• The numbers 1 to 12 are waveform numbers shown in page 43.
7
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CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
R77 1K
R46 1K
R47 1K
R45 1K
R78 1K
R48 1K
R60
C22
1K
0.01
µ-COM
INTERFACE
DEF1
1
R18
2 TA1
3.3M
PDO
2KX8
3
RAM
R58
680
4 VVSS
ISET
5
C42
VCO ERROR
0.047
CLOCK COERECT
OSC FLAG
R57
CONTROL
CONTROL
27K
VVDD
6
FR
7
R56
VSS
8
1.2K
EFMO
9 SLICE
SYNC-DETECT
LEVEL
EFMIN EFM DEMODULATE
10
CONTROL
IC2
TEST2
11
LC78623D
CLV+
CLV
12
DIGITAL SERVO/SIGNAL
CLV_
13 SERVO
CONTROL
V/P
14
HLF
15 EXTERNAL
SERVO
OUTPUT
TES
COMMAND
16
+B
CD_LD_M–
+B
LOADING MOTOR
DRIVER
IC91
TA7291S
R97
3.9K
+B
R98
C91
47/16 6.8K
8 9
Figure 23 SCHEMATIC DIAGRAM (2/14)
+B
EFLG
48 C61
12P (CH)
SBSY
SUB-CODE 47
C62
XVSS 46
15P (CH)
XIN
45
X-TAL
XOUT R61
GENERATOR 44
220
XVDD
43
MUTER
42
+B
RVDD
41
RCHO
40
R74 R76
C68
RVSS
39
2.7K 390
10/50
C67
R75
LVSS 38
10/50
390
LCHO
37
R73
36
LVDD 2.7K
MUTEL
35 C43
330/6.3
NC 34
TEST4
33
D_OUT
DIGITAL
OUT
CD_GND
R90
330
SWITCHING
DRIVER
Q94
KRC107 M
3 2
R82
R94
150
6.8K
1
L1
0.82H
C52
C51
100/16
0.022
+B
Q91
KTA1271 Y
R96
10K
Q93
KRC102 M
3 2
R92
1 2.2K
SOL
SOL
1
GND(M)
2
M–
3 M–
M+
4 M+
D_GND
GND(D)
5
OPEN CLOSE
6
CD_D_NO
DISC NO.
7
D_GND
8 GND(D)
MECHA UP
9
D_GND
GND(D)
10
11 10 9 8
TO MAIN
SECTION
P26 3-H
10
– 23 –
MAIN PWB-A1(1/3)
+B
Q84
TO MAIN
1
KTC3199 GR SECTION
P27 9-A
CD_R-CH
C70
R80
220P
4.7K
A_GND
TO DECK/MAIN
2
C69 SECTION
220P CD_MUT P27 9-A,P29 12-E
3
CD_L-CH
R79
C82
TO MAIN
4.7K 1/50
SECTION
+B Q83
P27 9-A
4
KTC3199 GR
D_OUT1
1 1 1
+4R3V
2 2 2
L99
3 3 2.2µH 3
CDGND
IC99
GP1F32T
OPTICAL FIBER
DATA LINK
Q81
KTC3203 Y
+B CD_7V
5
R81
220
TO MAIN
SECTION
R84
P27 8-H
22
CD_GND
6
+7.3V
M_12V TO MAIN/DECK
7
SECTION
P27 7-H,
P29 12-B
SOLM2
SOLENOID
1 1
2 2
M3
–
3 3
M T/T
4 4 UP DOWN
+
5 5 SW1
OPEN
6 6
CLOSE
7
TRAY MOTOR
8
PWB-G
9
10
SW2
MECHA UP
1 1
SW3
2 2
DISC NO
11 12