Read Sharp LC-20M4E (serv.man5) Service Manual online
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19
20
A
B
C
D
E
F
G
H
I
J
LC-20M4E
LC-20M4E
Ë
MAIN Unit -2/8
NC
1
I2C_CL
2
I2C_D
A
3
I2S_CL
4
I2S_WS
5
I2S_D
A_OUT
6
I2S_D
A_IN1
7
ADR_D
A
8
ADR_WS
9
ADR_CL
10
D
VSUP
11
D
VSUP
12
D
VSUP
13
D
VSS
14
D
VSS
15
D
VSS
16
I2S_D
A_IN2
17
NC
18
NC
19
NC
20
RESETQ
21
NC
22
NC
23
D
A
CA_R
24
DACA_L
25
VREF2
26
DACM_R
27
DACM_L
28
NC
29
DACM_SUB
30
NC
31
ASQ3
32
SC2_OUT_R
33
SC2_OUT_L
34
VREF1
35
SC1_OUT_R
36
SC1_OUT_L
37
CAPL_A
38
A8VSUP
39
CAPL_M
40
NC
41
NC
42
AHVSS
43
AHVSS
44
A
GNDC
45
NC
46
SC4_IN_L
47
SC4_IN_R
48
ASG4
49
SC3_IN_L
50
SC3_IN_R
51
ASG2
52
SC2_IN_L
53
SC2_IN_R
54
ASG1
55
SC1_IN_L
56
SC1_IN_R
57
VREFT
OP
58
NC
59
MONO_IN
60
A
VSS
61
A
VSS
62
NC
63
NC
64
AVSUP
65
AVSUP
66
ANA_IN1+
67
ANA_IN-
68
ANAIN2+
69
TESTEN
70
XTAL_IN
71
XTAL_OUT
72
TP
73
AUD_CL_OUT
74
NC
75
NC
76
D_CTL_I/O_1
77
D_CTL_I/O_0
78
ADR_SEL
79
STANDBYQ
80
IC901
IX3370CE
X901
B0250GE
B0250GE
R917
1M
1M
C930
5P
C931
5P
R971
0
0
AGND
R901
100
100
R902
100
100
SD
A1
SCL1
SSYSTEM
C980
0.1u
C902
0.1u
+
C938
100u/6.3V/APFN
L901
4.7uH
4.7uH
C979
0.1u
0.1u
FB972
0006TA
AGND
SRESET
R903
100
100
C928
56P
C929
56P
C971
56P
C974
100P
100P
C975
100P
100P
C976
100P
C977
100P
100P
AGND
C925
1u/10V/KZ1025
1u/10V/KZ1025
FB951
0035TA
L902
100uH/1M
+
C912
10u/16V/APF
+
C911
10u/16V/APF
+
C914
150u/16V/EZ0417
C913
0.1u
C916
0.1u
0.1u
+
C915
3.3u/50V/APF
3.3u/50V/APF
+
C924
10u/16V/APF
C923
0.1u
0.1u
C973
0.1u
+
C937
100u/6.3V/APFN
AGND
C978
0.1u
1
2
3
4
5
6
7
8
-
+
-
-
+
+
IC903
NJM4560
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
L
L
L
H
H
H
IC303
NJM2283F
NJM2283F
AGND
+
C944
10u/16V/APF
10u/16V/APF
+
C905
10u/16V/APF
+
C906
10u/16V/APF
+
C945
2.2u/50V/APF
+
C946
2.2u/50V/APF
C943
0.1u
C942
560P
C940
1500P
1500P
C939
560P
C941
1500P
R921
8.2KF
R920
8.2KF
R923
22K
22K
R919
8.2KF
R924
47K
47K
R918
8.2KF
R925
47K
47K
AGND
AGND
AGND
AGND
R922
22K
R910
1K
R909
1K
C909
6800P
6800P
C910
6800P
6800P
R908
0
1
2
3
4
5
6
7
8
-
+
-
-
+
+
IC902
NJM4560
R967
18K
R969
6.8K
R968
6.8K
R966
18K
R954
0
R951 0
+
C957
4.7u/25V/APF
AGND
AGND
+
C958
4.7u/25V/APF
AGND
C955
1u/16V/TV
C956
1u/16V/TV
R964
47K
R965
47K
R963
22K
22K
R962
15K
+
C954
10u/16V/APF
10u/16V/APF
AGND
STBY
1
L_OUT
2
BS
3
NF
4
L_IN
5
RF
6
PRE_GND
7
R_IN
8
NF
9
BS
10
R_OUT
11
VCC
12
GND
13
GND
14
PO
WER
PO
WER
IC301
LA4227
+
C301
10u/16V/APFN
AGND
+
C302
100u/16V/APFN
C303
0.1u
R302
8.2/1/2W
R303
330
330
R329
100K
100K
+
C304
47u/16V/APFN
AGND
AGND
R335
0
0
+
C306
470u/16V/APWN
C305
1000P
1000P
AGND
AGND
R328
100K
R304
330
330
AGND
AGND
+
C310
47u/16V/APFN
R333
0
0
C309
1000P
1000P
AGND
R305
8.2/1/2W
C311
0.1u
+
C312
100u/16V/APFN
C313
1u/16V/TV
+
C314
2200u/16V/A4U
R327
0
0
R301
0
Q302
A1162Y
+
C317
1u/50V/APFN
+
C318
1u/50V/APFN
STBY
1
L_OUT
2
BS
3
NF
4
L_IN
5
RF
6
PRE_GND
7
R_IN
8
NF
9
BS
10
R_OUT
11
VCC
12
GND
13
GND
14
PO
WER
PO
WER
IC302
LA4227
C329
1u/16V/TV
AGND
+
C321
10u/16V/APFN
AGND
+
C322
100u/16V/APFN
C323
0.1u
R319
8.2/1/2W
R320
15
15
R330
100K
100K
+
C324
100u/16V/APFN
AGND
+
C326
470u/16V/APWN
470u/16V/APWN
C325
0.027u
0.027u
AGND
AGND
R318
0
R308
22K
22K
R309
2.2K/1/4W
C316
0.1u
0.1u
AGND
1
2
3
Q308
DTC144EE
AGND
R315
2.7K
R317
2.7K
R316 6.8K
R314
6.8K
1
2
3
Q303
C314TK
1
2
3
Q304
C314TK
AGND
AGND
+
C307
2.2u/50V/APFN
+
C308
2.2u/50V/APFN
+
C319
22u/6.3V/APFN
AGND
+
C327
1u/50V/APFN
R324
4.7K
R321
3.3K
R322 4.7K
1
2
3
Q305
C314TK
AGND
AGND
+
C330
2.2u/50V/APFN
+
C320
22u/6.3V/APFN
22u/6.3V/APFN
R323
4.7K
AGND
RSMUTE
FSMUTE
AV2_R
AV2_L
AV1_R
AV1_L
AGND
L/R
FSMUTE
RSMUTE
L/R
FSMUTE
RSMUTE
L/R
PAVCC
PA_GND
FLSP
FRSP
RSP
V2_RO
V2_LO
B5V500MA
SSYSTEM
SCL1
SDA1
SRESET
SSYSTEM
SCL1
SDA1
SRESET
B8V30MA
B9V200MA
SSTBY
C932
0.1u
AGND
TV
+
C328
1000u/16V/EZ1274
C983
1u/10V/KZ1025
C984
1u/10V/KZ1025
1u/10V/KZ1025
C985
1u/10V/KZ1025
1u/10V/KZ1025
C986
1u/10V/KZ1025
1u/10V/KZ1025
+
C982
150u/16V/EZ0417
150u/16V/EZ0417
AGND
AGND
R7706
0
0
AGND
18.432MHz
R376
8.2K
R377
8.2K
8.2K
R378
8.2K
8.2K
R379
8.2K
8.2K
4.8
4.8
1.5
1.5
0.7
0
2.2
2.1
1.3
2.2
0
0
0
0
0
5.0
0
0
0
0
3.7
0
2.5
3.7
3.7
0
3.7
3.7
0
3.7
3.7
0
3.7
3.7
0
3.7
0
0
0
0
0
2.5
2.3
0.9
0.8
0.8
1.0
1.0
1.0
1.0
5.0
5.0
5.0
0
0
0
0.9
0
0
0
5.0
0
0
0
7.0
8.5
7.6
3.7
3.7
0
3.7
0
0
0
1.3
0
1.3
1.3
0
0
8.5
4.2
4.2
4.2
0
4.2
4.2
4.2
4.3
0
3.7
0
3.6
3.6
0
4.3
4.3
0
4.3
0
8.5
4.3
0
4.3
10
5.0
5.0
5.0
0
5.0
5.0
5.0
0
0
0
0
0
0
5.0
0
0.1
12.7
13.4
13.5
13.5
6.9
13
0
1.1
0
0
13
0
1.1
0
12
7.0
13
0
0
0
13.5
6.7
13
0
1.2
0
0
13
0
1.1
0
12
7.0
13
26~27
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