Service manual

QT-CD131/131C
– 17 –
78 9101112
Figure 17 SCHEMATIC DIAGRAM (6/6)
SEG10
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG9 SEG8
SEG27
RESET
HOLD(KE0)
PLL(CLOCK)R92(SCK)
PLL(PEREOD)R90(SI)
R80(INT2)
R81(T2)
R82(INT1)
R83(T1)
R70(PULSE)
R71(WTO)
R73(XTOUT)
R72(XTIN)
VLC
P10
VSS P11 P12 P13 P20 P21 P22 P23 COM1 COM2 COM3 COM4 VASS(A/D GND)
PLL(DATA)R91(SO)
VDD
R40
R61(AIN5)
R53(AIN3)
R60(AIN4)
R62(AIN6)
R63(AIN7)
R41
R42
KO0
KO1
KO2
KO3
XIN
XOUT
TEST
4.3V
0V
5.2V
R514
1K
R513
1K
XL501
4.19MHz
R511
820
R512
1M
R527
1.8K
R526
10K
C507
0.022
IC502
PST9142
RESET
R506
1.8K
C506
0.022
D503
1N4148
D504
1N4148
D502
1N4148
C502
0.022
C501
10/16
ZD501
MTZJ5.6A
C504
0.022
C503
100/6.3
R501
220
R529
1K
Q501
2SC1815GR
RESET
R507
100K
5.6K
R508
D506
1N4148
C511
0.1/50
D505
1N4148
C512
0.0047
Q502
2SC1815GR
RESET
R510
47K
R509
10K
C509
0.01
L501
470µH
LCD501
R530
1K
1 4
1
4
FW501
L503
470µH
+B
R505
2.7K
C505
2.2/50
L502
470µH
D501
1N4148
+B
BI501
1 2 3
4
5
6
7
8
9
1 2 3 4
5
6
7
8
9
10 10
CNS501
BACK UP +B
MONO/STEREO
MUTE
TUNED
STEREO
GND(D)
PLL(PERIOD)
PLL(DATA)
PLL(CLOCK)
+7.3V
SW501
BAND
R519
1K
R521
10K
R518
3.3K
SW503
TUNER
UP
SW502
TUNER
DOWN
R516
5.6K
R517
5.6K
SW504
MEMORY
R515
8.2K
SW506
PRESET
DOWN
SW505
PRESET
UP
R525 10K
R524
3.3K
R523
1K
SWITCH PWB-B2
TUNER DISPLAY PWB-B1
1 2 3 4
5
6
7
8
9
10
11
12 13
14
15 16 17 18 19
20 21
20
23
24
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50 51
52 53 54 55 56 57 58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
7879
80
1 2 3 4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
C510
0.01
C508
0.022
C513
0.01
IC501
IX0003SJ
TUNER CONTROL
MICROCOMPUTER
P16 5 - A
TO MAIN PWB
CNP501
VAREF R50(AIN0) R51(AIN1) R52(AIN2)
21
22
23
24
R528
10K
+B
+B
R502 560 R503 560 R504 560
1 2
3
R520 1K R522 1K
C530
0.022