Service manual
QT-CD161/141
– 19 –
Figure 19 SCHEMATIC DIAGRAM (6/6)
78 9101112
R519 560
C512
0.022
C513
0.022
R510 1K
R509 1K
R532
1K
R534 1K
R535 1K
R536 1K
R537 1K
R538 1K
R531
15K
R539
1K
Q501
KTC3199 GR
RESET
C509
0.1/50
C508
0.022
IC502
PST9142
RESET
R503
1.8K
D501
1SS133
C502
0.022
ZD501
DZ5.6BSB
C504
0.022
C503
10/16
R501
150 (1/4W)
D502
1SS133
C501
100/10
D505
1SS133
R504
100K
R505
5.6K
D506
1SS133
C510
0.1(M)
R508
56K
R511 560
R512 560
R513 560
Q502
KRC107M
RESET
R523
15K
R518
10K
R517
10K
R524
56K
R520 1K
R522 1K
R521 1K
R533 1K
R507
1K
SW507
CD LID
OPEN/CLOS
SW501
TUNER
UP
SW505
PREST
DOWN
SW502
TUNER
DOWN
SW506
PREST UP
SW503
BAND
SW504
MEMORY
R546
15K
R545
5.6K
R544
3.3K
R547
3.3K
C516
100P
IC501
IX0016SJ
CD/TUNER CONTROL
MICROCOMPUTER
R506
2.7K
R541
1K
XL501
4.19MHz
R540
1K
R543
6.8K
R542
3.3K
42
43
LCD501
C511
0.022
R527
10K
R528
10K
R526
10K
R530
15K
C519
10/16
R548
47
R550
15K
R549
15K
L501
100µH
C505
0.022
D503
1SS133
D504
1SS133
R502
2.7K
C506
2.2/50
C521
0.0047
R552
1K
3
1
2
MONO/STEREO
STEREO
PLL(PERIOD)
PLL(DATA)
PLL(CLOCK)
TUNED
GND(D)
BACK UP +B
SQ OUT
SL+
RWC
COIN
CQCK
RESET
DRF
PU IN
WRQ
+7.4V
SL–
25
26
27
25
27
28
29
30
31
32
33
34
35
36
37
38
39
40
4142434445464748495051525354555657585960616263
80
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
123456789
FUNC(CD)
P-MUTE
VL3
COM0
COM1
COM2
COM3
AVSS
VREF
VCC
SEG0
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
VL1
LID SW
CLOCK
DATA
PERIOD
T-MUTE
AREA
KEY1
KEY0
STEREO
MONO/ST
WRQ
SD
PU IN
DRF
RESET
CQCK
COIN
RWC
SL+
SL–
RESET
P-MUTE1
P-MUTE2
SYNC IN
FUNC
VSS
XOUT
XIN
REMOCON
SYS
STOP
SQ OUT
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG8
SWITCH PWB-A5
FW501
1
3
1
3
RX501
REMOTE
SENSOR
31
30
29
26
25
24
12
2
1
3
2
1
1
40
+B +B
1
2
3
21
20
19
18
17
16
15
14
1312
11
10
9
8
7
6
5
4
3
2
1
MAIN PWB-A1(4/4)
+B
+B
32
5
11
10
9
8
7
6
4
QT-CD161 ONLY
QT-CD161
ONLY
P16 1-F,P14 2-H
P18 5-A
P14 3-F
P16 1-F
< >: Recording
[ ]: Play
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO.
VOLTAGE
IC101
<0V> [3.23V]
<0V> [0V]
<0.6V> [0.6V]
<0V> [0V]
<0V> [0V]
<0V> [0V]
<0V> [0V]
<7.43V> [7.43V]
<0V> [0V]
<7.37V> [7.37V]
<0.6V> [0.6V]
<3.3V> [3.3V]
9
8
7
6
5
4
3
2
1
13
12
11
10
PIN
NO.
VOLTAGE
IC202
0.1V
0V
11.2V
0V
11.3V
0V
0.1V
12V
10.4V
5.8V
0V
5.8V
10.4V
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO.
VOLTAGE
IC501
3.0V
1.5V
––
––
––
––
––
––
5.0V
5.0V
5.0V
––
2.1V
5.0V
4.6V
4.9V
4.9V
3.9V
––
––
––
––
15
14
13
47
46
45
41
40
39
38
37
36
35
34
33
44
43
42
18
17
16
50
49
48
21
20
19
53
52
51
23
22
55
54
26
25
24
58
57
56
29
28
27
61
60
59
73
72
71
75
74
78
77
76
80
79
32
31
30
64
63
64
63
62
PIN
NO.
VOLTAGE
PIN
NO.
VOLTAGE
––
––
––
––
––
––
––
––
––
––
––
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
67
66
65
70
69
68
PIN
NO.
VOLTAGE
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
5.0V
––
––
––
––
––
––
––
––
4.0V
0.5V
––V
5.0V
––
––
2.0V
2.3V
GND
––
5.0V
5.4V
––
––
––
––
––
––
––
––
––