Sharp QT-CD180(BL) Service Manual page 13

C825
47/16
R824
10K
C826
47P
12
50 49
TMAX
LPFN
51
R827 C827
52 LPFO
15K 0.015(ML)
PVREF
53
C830
54 VCOF
1.50V
0.01(ML)
55 AVSS 0V
C828
SLCO 2.10V
56
0.0027
C829
2.10V
57 RFI
0.0047
AVDD 4.98V
58
R828
RFCT 2.10V
59
10K
RFZI 2.10V
60
C833
2.73V(1.15V)
RFRP
61
0.033(ML)
FEI 2.30V(2.1V)
62
SBAD 2.94V(0.989V)
63
R812
TEI 2.14V
64
1K
C854
TEZI 2.14V
65
0.0068
R829
FOO 2.18V
66
3.3K
R830
67 TRO 2.11V
10K
VREF 2.10V
68
R831
2.14V
RFGC
69
3.3K
R832
TEBC 2.10V
70
3.3K
R833
71 FMO 2.10V
3.3K
R834
DMO 2.17V
72
3.3K
4.18V
73 2VREF
SEL 2.47V(0V)
74
4.97V
75 VDD2
C840
VSS2 0V
76
0.047
0V
77 XVSS
7(ML)
X801
XI 2.08V
78
16.93MHz
7(ML)
79 XO 2.57V
7(ML)
XVDD
80
7(ML)
R840
4.92V
10
C845
0.047
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
R860
100
C844
100/10
C857
0.01
801
4004
+B
+B
V) +B
R456
39K
R455
39K
L801
0.82µH
R215
2.7K
R216
2.7K
TAPE
11
SW201-B
AM 10
12
FM 9
L-CH
CD 8
SW201
FANCTION
TAPE 14
SELECTOR
AM 15
R-CH
13
FM 16
CD 17 SW201-C
TAPE
AM
FM
SW102-D
+B CD
SW102
R
P
RECORD/
SW201-A
12 11 10
PLAYBACK
SW201
R351 FANCTION
100 SELECTOR
C354
L301
0.022(ML) 3.32V
RECORDING
BIAS OSCILATOR
R353
33K
Q351
KTC3199 GR
R352
BIAS OSC.
0V
150
C353
C352 R354
0.0056(ML)
100/10 4.7
• NOTES ON SCHEMATIC DIAGRAM can be found on page 11.
7
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C823
0.022
0V
0V
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 0V
PUSEL2
PU IN
4.97V
0V MUTE
4.98V ADIN2
13
4.98V ADIN1
0V DISPLAY
( ): STOP
50 2.08V(0V)
4.98V PUSEL1
51 2.10V(1.34V)
0V PUSEL0
52 2.01V(4.12V)
0V TRAY OPEN
2.10V
53
0V TRAY CLOSE
IC802
5
0V MVSS1
7 4.98V MVDD1
SERVO/
0V DOOR OUT
SIGNAL
0V DOOR IN
6
0V CDSEL1
1
CONTROL
0V CDSEL0
TC9457F0 2.49V
11 SEG14
2.49V SEG13
2.49V
SEG12
2.49V SEG11
15
2.49V SEG10
14
2.49V SEG9
2.49V SEG8
4
2.49V SEG7
98 2.33V
2.48V
82 SEG6
2.49V
16
99 2.33V
2.37V
83 2.49V SEG5
SEG4
84 4.72V 2.49V
17 2.49V SEG3
SEG2
2.49V
SEG1
2.33V
+B
R839
47K
C846
1/50
R838 R837
10K 10K
VOLUME
PWB-A2
C219
10/16
C217
0.0015
R219
VR201-A
2.7K
20K(B)
C215
VOLUME
0.047(ML)
C216
0.047(ML)
R220
2.7K
VR201-B
C218
20K(B)
0.0015
VOLUME
C220
10/16
+B
D201
1N4148
SW201
+B
FUNCTION
SELECTOR
REGULATOR
SW201-D
Q204
20 TAPE
5
KTA1046 Y
4 21 AM
5.08V 9.05V 19
6
22 FM
3
R202
2 23 CD
4.7K
8.44V
R201
2.2K
8.44V
D203
1N4148
4.39V
C202
47/16
8 9
Figure 13 SCHEMATIC DIAGRAM (2/2)
MAIN PWB-A1
+B
0V
R821
30
22K
29
R843
28
3.3K
27
+B
26
R844
25
3.3K
24
23
R862
22 NC
22K
21 NC
20
19
C824
18
0.022
17
R861
16
3.3K
15
14
NC
13 NC
12 NC
11 NC
10 NC
9 NC
8
NC
7 NC
6 NC
5
4
3
2
1
NC
+B
2.49V
+B
+B
IC201
POWER AMP.
TA8227P
C233
470/10
7 11
0V 0V
+
8 0V –
4.67V 10
C239
0.15(ML)
9 0.56V
4.33V 13
0V
4
14
9.05V
C240
0.15(ML)
8.01V
3
–
5 0V
+
4.27V
0.56V 2
6
C234
1 12
470/10
8.35V
8.02V
+B
C226
0.022
POWER PWB-A4
+B +B
1 1
2 2
BATTERY
DC 9V[ "D" SIZE
(UM/SUM-1,R20 OR HP-2)
BATTERY x 6]
SW601
TAPE
R230
MAIN
2.7
+
M601
M
TAPE
–
MOTOR
10
– 13 –
QT-CD180
SW810
CD LID
OPEN/CLOSE
IC801
PIN PIN
VOLTAGE VOLTAGE
NO. NO.
1 4.84V 13 2.86V(0.99V)
2 2.04V 14 2.12V
3 2.04V 15 2.05V
4 2.12V(0V) 16 2.05V
5 2.11V(0V) 17 2.63V(1.15V)
6 0.18V(0V) 18 2.04V
7 2.84V(0V) 19 2.07V
8 2.41V(0V) 20 2.17V
9 2.05V 21 2.04V
10 4.08V 22 1.47V(0.77V)
11 2.05V 23 0V
2.08V
12 24 2.05V
( ): CD STOP
CD CONTROL PWB-A3
LCD801
LCD DISPLAY
FW806
10 10
+B 1 2 3 4 5 6 8
7
1
1
R847 R848 R849
1K 2.2K 6.8K
+B
SW804
SW801 SW803 TRACK UP/
SW802
PLAY/ STOP TRACK CUE
PAUSE DOWN/
REVIEW
FM SIGNAL
AM SIGNAL
CD SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
+
SP201
L-CH
4 OHM
1 1 –
2 2 SPEAKERS
–
3 3
SP202
R-CH
+ 4 OHM
SO651
AC INLET
SOCKET
T651
AC 120V, 60Hz
POWER
TRANSFORMER
AC INPUT
AC/DC SELECTOR
11 12