CD-C75HR
Writer and Editor: Quality & Reliability Control Center of Communication & Audio Systems Group, Sharp Corp.
A9609-4558NS•HA•M
Printed in Japan
In Japan gedruckt
Impremé au Japon
SG
A
B
C
D
E
F
G
H
1
2
3
4
5
6
Figure 40 SCHEMATIC DIAGRAM (5/14)
4.83V
4.93V
4.83V
0.17V
0.16V
4.94V
0V
0V
2.21V
2.1V
0V
4.81V
0V
4.93V
0.17V
0.15V
0.17V
3.64V
0.82V
0V
4.83V
0V
0.81V
3.84V
0V
0.13V
4.69V
0V
0V
0V
4.8V
4.79V
4.8V
4.77V
0V
0V
4.69V
0V
0V
4.69V
5V
4.22V
0V
0V
0V
0V
0V
0V
4.78V
4.79V
4.83V
4.83V
4.82V
4.8V
4.82V
5.31V
12.2V
4.92V
0.01V
4.85V
5.01V
4.94V
4.94V
4.81V
4.83V
0V
4.79V
0V
0V
12.2V
12.2V
4.85V
4.94V
0V
4.94V
0V
0V
5V
5V
5V
C
2
B-DI
C
2
B-DO
SD
AVDD
SPE1
SPE2
SPE3
SPE4
RESET
T1 SOL
SPAN 9K
LINE MUTE
VSS
SYS STOP
SP PROT
RELAY
CNP303
TO TUNER PWB
CNS701
TO DISPLAY PWB
R257 ~ R266,
R284 ~ R286 : 1K
R242 ~ R253 : 1K
R204 ~ R221 : 1K
R230 ~ R234 : 1K
R222 ~ R226,
T2 CrO2
S-MUTE
V-CAN
TUN MUTE
SPE5
T2 RUN
T1 RUN
HI SPEED
SPEED H/L
CD
CD MUTE
MIC
AVREF
XT1-OUT
XT1-IN
VSS
X1-IN
C
2
B-CLK
X1-OUT
C
2
B-CE
P.B MUTE
REC MUTE
P. B EQ
T2 A-FP
T2 PL/ST
T1 CrO
2
T1 PL/ST
REC/P. B
T1/T2
BIAS
POWER
SRS PASS
SRS/3D-MONO
VSS
SRS A
SRS B
SRS INH
SRS
T2 B-FP
BEET CAN
AUTO SCAN
CD NO/U/D
DISC NO
CD CLOSE
CD OPEN
VDD
MOTOR
T2 SOL
CD DRF
AVSS
CD PUIN
DISP STB1
DISP SI1
DISP COM1
DISP SCK1
CD RWC
CD WRQ
CD SQOUT
CD COIN
CD CQCK
VDD
CD SL+
CD SL–
CD RES
R288 ~ R291 : 10K
R203
1K
1K
R280
+B
+B
+B
+B
+B
+B
+B
+B
R254
1K
R235
1K
R236
R237
R238
R239
R240
R241
R242
R243
R244
R245
R246
R247
R248
R249
R250
R251
R252
R253
+B
R202
1K
+B
R299
47K
3
2
1
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
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
78
79
80
63
64
23 24
9
8
7
6
5
4
3
2
1
14
13
12
11
10
9
8
7
6
5
4
3
2
CNP201
1
3
1
2
1
1
1
10
9
8
7
6
5
4
3
2
CNS202
1
R298
47K
D207
1SS133
D205
1SS13
R278
10K
R279
10K
C202
15P
(CH)
C201
18P(CH)
X202
R287
10K
R292
10K
R288
R289
R290
R291
D206
1SS133
R255
1K
R256
10K
R201
1K
R286
R285
R284
R283
10K
C206
47/25
C205
0.022
R259
R258
R257
R266
R265
R264
R263
R262
R260
R261
R216
R221
R220
R219
R217
R215
R214
R213
R212
R211
R210
R209
R208
R207
R206
R205
R204
R222
R223
R224
R225
R226
R230
R231
R234
R233
R232
IC201
µPD78045A
SYSTEM
MICROCOMPUTER
P39 1-F
P49 8-G
Figure 44 SCHEMATIC DIAGRAM (9/14)
0V
0.29V
2.62V
4.69V
0V
0V
0V
32.7V
–32.7V
31.1V
–1.3V
0V
–0.15V
–0.11V
0V
0.69V
0V
0.01V
0.01V
–12.59V
0.03V
5.62V
6.24V
11.92V
12.2V
18.3V
12.8V
12.8V
13.4V
18.3V
12.2V
18.3V
12.8V
12.8V
13.4V
18.3V
13.4V
13.4V
0.62V
2
V
R922
0.2 (1W)
R916
1K
C916
100/35
C992
47/50
R938
2.2K
R912
56K
R992
39K
C914
15P
C912
47P
R940
1K
C918
0.022
R910
1K
R918
2.2K
R924
0.2 (1W)
C908
2.2/50
J681
D699
1SS133
D698
1SS133
C698
0.022
R693
33K
R694
33K
C691
390P
C692
390P
R695
1.8K
R696
1.8K
Q996
KRC102 M
R994
390
D902
1SS133
Q904
KTC3199 GR
R920
10K
C994
100/35
R942
12K
C940
0.1
(ML)
R944
100K
R946
2.2K
C942
0.15
(ML)
R699
47K
R698
15K
R697
15K
C699
4.7/50
Q699
KRA107 M
C948
0.022
MUTING
Q902
KTC3199 GR
C904
0.001
R906
5.6K
C906
2.2/50
R832
330
R833
330
C910
470P
R908
56K
Q823
KTC3199 GR
VOLTAGE
REGULATOR
C824
47/25
R825
1K
R835
33K
Q822
2SD2012
R824
47
R823
47
Q827
KTC3199 GR
R834
1K
C833
47/25
C823
0.022
D824
1SS133
C832
22/50
R831
22K
C827
47/25
R828
100
C826
0.022
Q825
2SD468 C
VOLTAGE REGULATOR
Q824
2SD2012
D826
1SS133
Q826
KRA107 M
C825
47/25
ZD820
MTZJ13C
R826
560
R836
10K
C822
22/25
R948
6.8K
C946
330P
R902
2.7K
C902
10/16
R904
2.2K
R993
100
R987 100 Fusible
R914
470
C936
47/50
1
CNP903
3 4 5 6 7
9
7
11
12
15
16
17
18
14
13
4
+B
+B
+B
ZD821
MTZJ6.2C
R829
1.5K
+B
+B
7
5
6
40
73
FW903
+B
75
40
72
GND (A)
–
+
GND (A)
POWER ON/STB
PROT
RELAY
–15V
GND (A)
GND
GND (A)
L-CH
R-CH
L-CH IN
R-CH IN
R-CH
IC902
(2/2)
S-MUTE
GND (A)
R-CH IN
GND (D)
+12V (A)
+12V (M)
+12V (M)
+5.6V (D)
GND (M)
Fusible
IC901 (2/2)
L-CH
R-CH
R-CH
L-CH
INPUT
VIDEO/AUX
VIDEO IN
L-CH OUT
GND(A)
R-CH OUT
L-CH IN
VIDEO OUT
VTR
L-CH
R-CH
VIDEO/AUX
OUT
–B
Fusible
R827
4.7
–B
VOLTAGE REGULATOR
SWITCHING
VOLTAGE
REGULATOR
1
2
3
1
3
SWITCHING
–B
–B
TO MAIN S
E
–B
2
8
2
P41 1
0
TO MAIN SECTION
P42 8-H
R681
1K
R691
4.7K
R683
100K
R684
100K
C684
2.2/50
C683
2.2/50
R953
1K
R685
12K
R687
1.5K
R688
1.5K
C697
0.022
C696
0.022
C688
47P
C687
47P
R690
100K
R689
100K
C689
2.2/50
C690 2.2/50
R685
180P
R692
4.7K
R682
1K
Q682
2SC3199 GR
Q681
2SC3199 GR
C681
330P
C682
330P
8
7
5
6
3
4
1
2
–
+
(2/2)
(1/2)
IC681
IC681
C686
180P
R686
12K
R954
1K
1
3
2
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