Service manual

QT-CD700W
19
Figure 18 SCHEMATIC DIAGRAM (4/4)
C126A
1UF/50V
R128A
220
R505A
10K
C502A
104
L202
100uH
C133A
100UF/10
104
C134A
C128A
104
C132A
15P
R302A
3K
C306
4.7UF/50V
R306A
560
R305A
560
CD-RCH
1
2
3
CD-LCH
CN8
1
2
1
2
CN5
CN9B
S4
PLAY
S7
RANDOM
S3
STOP
S2
FF
S1
FB
S6
REPEAT
S5
PROG
R515A
10K
R514A
4K7
R513A
3.3K
R512A
2K7
R511A
1K8
CN9A
CN5A
C305A
4.7UF/50V
R304A
2K7
R303A
2K7
R24
1K
AMUTE
3.29V
-0.8V
0.66V
REC-SYN
FMST-
FMST+
-0.8V
0V0V
0V
3.27V
B
E
C
R16
0
Q4
9014
Q5
9014
R15
10K
R14
10K
R13
10K
OPEN/CLOSE
LEAF SW
SW810
FM ST
LED1
C505A
104
R301A
3K
C301A
560P
C302A
560P
C304A
560P
C303A
560P
Q301
DTA124ESA
C138
104
C131A
15P
C127A
100UF/10
X1
16.9344M
R120A 1M
R540 OPEN
C503A 104
R506A 10K
R507A 10K
R508A 1K8
R531 0
R529 0
104 C508A
LCD DISPLAY
00
LCD 1
CD CONTROL PWB-A3
MAIN PWB-A1
CN4B
CN4B
CN4A
R541 OPEN
R542 OPEN
R543 OPEN
R545 470K
R546 470K
R547 470K
A
VDD
R1 4.7
R503A 1K
9
K
D4
1N4148
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
DVDD
RESETB
PWC/W_REMOTE
P11/SYNC
P10/PLAY
P03/PRO_LED
P02/MMUTE
P01/LID
P00/INNER
SEG6/AMUTE
CCOM1/SEG5
COM0/SEG4
SEG./3
SEGG/2
SEGF/1
SEGE/0
26
27 28 29 30 31 32
ADC1/KEY
CLK88
LON SEGA/COM0 SEGB/COM1 SEGC/COM2
SEGD/COM3
55
54 53 52 51 50 49
RDAC0
VCDAC
LDAC0
AVDD3
DGND
X0 X1
1 2 3 4 5 6 7 8 9
10
1 2 3 4 5 6 7 8 9
10
1 2 3 4 5 6 7 8 9
10
COM0 COM1 COM2 COM3
SEG0 SEG1 SEG2 SEG3 SEG4 SEG5
A00 A01 A02 A03 A04 A05 A06 A07 A08 A09
A00 A01 A02 A03 A09 A08 A07 A06 A05 A04
IC201A BU24530-9A
VOLTAGE(V)PIN NO
3.32
1.72
1.72
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1.66
2.58
2.27
1.67
1.66
1.71
1.71
0
1.66
1.03
0.20
15
16
17
18
19
20
21
22
23
24
1.63
0.65
1.67
1.64
3.33
1.66
VOLTAGE(V)PIN NO
1.61
0
1.56
49
50
51
52
53
54
55
56
57
58
59
60
61
62
1.65
0.42
0.77
0.77
3.32
1.66
1.67
0
1.85
1.66
1.67
63
64
1.66
1.62
1.53
0
1.65
1.67
VOLTAGE(V)PIN NO
1.82
1.66
3.32
25
26
27
28
29
30
31
32
33
34
35
36
37
38
1.60
1.60
1.54
1.57
3.39
1.49
1.46
1.46
1.46
1.63
1.63
39
40
41
42
43
44
45
46
47
48
3.30
3.31
3.32
3.32
3.29
3.30
0.94
0.06
0
0.02
7 8 9 10 11 12