Sharp LC-70UD20KN (serv.man2) Service Manual ▷ View online
9
LC-60UD20
LC-70UD20
FRC Unit Side B
8
1
2
3
4
5
6
7
9
10
G
F
E
D
C
B
A
10
LC-60UD20
LC-70UD20
FRC Unit Side B (Chip Parts)
8
1
2
3
4
5
6
7
9
10
G
F
E
D
C
B
A
R8044
R8045
R8046
R8047
R8048
C9010
C9011
R8049
C9012
C9013
C9014
C9015
C9016
C9017
C9018
R8050
R8051
C9019
C9401
R8052
C9402
R8053
C9403
R8054
C9404
R8055
R8056
R8057
C9020
R8058
R8059
C9021
C9022
C9023
C9024
C9025
C9026
C9027
R8060
C9028
C9029
C9411
C9412
R9002
C9413
R9003
R9004
R9005
R9006
R9007
C9030
C9031
R9009
C9032
C9033
IC9003
C9034
C9035
C9036
C9037
C9038
R9010
C9039
R9011
R9012
R9013
R8074
R9014
R9015
C9040
C9041
FB9501
C9042
R9402
FB9502
C9043
FB9503
C9044
R9404
FB9504
C9045
C9046
R9406
C9047
C9048
R9408
R9020
R9021
R8081
R9022
C9627
R9023
R9600
R9024
C9628
C9629
R9027
R9603
R9028
R9604
C9050
R8088
R9029
C7305
C9051
R9411
C9052
R9607
C9053
R9608
C9054
R9414
C9630
R9609
C9055
C7309
R9415
C9631
C9632
C9056
C9633
C9057
R9030
C9058
RJ7704
R9031
RJ7705
R9032
R9033
R9610
R9611
R9611
R8095
FB7001
R9612
R9036
FB7002
R9613
C7313
FB7003
R9037
R9614
C9060
C7314
FB7004
R9038
LUG8020
FB7005
R9615
C9061
C7315
R9039
LUG8021
FB7006
R9616
C9062
C7316
LUG8022
FB7007
C7317
LUG8023
R9617
FB7008
C7318
RJ7710
LUG8024
LUG8025
FB7009
C7319
LUG8026
LUG8027
C9067
LUG8028
R9428
R9040
LUG8029
R9041
Q7701
FB7201
R9042
FB7202
FB7010
C7320
R9044
Q7704
FB7011
C7321
R9045
RJ7331
Q7705
FB7012
Q7706
C7322
R9046
RJ7332
Q7707
R9047
R9430
C7324
R9048
C9071
C7325
R9049
C7326
C9072
C7327
C9073
C7328
C7329
LUG8018
R9050
R9051
LUG8019
R9052
R9053
R9054
R9055
C7719
R9057
R9058
C7720
C7339
C7722
C7723
R9060
R9061
D7701
R9062
D7702
D7703
R9064
C7340
D7704
C7341
D7705
C7342
R9066
D7706
R7703
D7707
LUG8030
R7704
D7708
LUG8031
D7709
C7347
C7348
FL9004
FL9005
FL9006
R7323
FL9007
D7710
FL9008
IC7704
FL9009
D7711
D7712
R7326
D7713
IC7707
R9074
C7738
D7714
C7351
R7329
C7739
D7715
IC7709
R9075
C7352
R9078
FL9010
C7355
FL9011
R7715
C7356
FL9012
FL9013
R7330
FL9014
R7718
IC7710
R7331
R7719
FL9015
R7332
C7742
R7333
C7743
R7334
C7744
R9080
R7335
R9082
R7336
C7747
R7337
R7338
R7720
R7339
R7721
R9086
R7723
R7724
R9089
Q8303
R7340
C7369
R7341
R7342
R7343
R7344
R7345
R7345
R7346
R9092
C7757
R9094
C7758
R9095
C7372
R9096
R7732
C7373
C7374
R7734
FB8004
R9099
Q8507
Q8508
R7739
C7761
C8701
Q8509
C8702
C8703
LUG8008
C8705
C8706
C8707
C8708
Q8510
R7359
Q8513
C8324
Q8514
R8109
C8325
Q8515
Q8516
Q8517
C8710
C7770
Q8518
R7749
R8301
Q8519
C8712
R8302
C8713
R8110
C8714
C7775
C8715
C8521
C8716
C8522
C7777
R8307
C8523
R8308
Q8520
C8524
R7751
C7779
R8309
C8719
C8525
FL7302
C8526
R7753
C8527
R7754
FL7304
C8528
C7395
FL7305
C7396
FL7306
R7756
C7397
FL7307
R7757
R8503
C7398
C7780
R8310
FL7308
C8720
R7758
R8504
C7399
R7759
R8311
FL7309
C8721
R8505
R8312
C8722
C7782
R8506
R8313
C8723
R8314
C8724
C8530
R8315
R8509
C8531
C8726
C8532
R8317
C8727
C8533
R7760
R8318
C8728
FL7310
C8534
R7761
R8319
FL7311
R7762
FL7312
C8536
R8127
R7763
C8537
R7764
C8538
R7765
C8539
R7766
R7767
R8513
R7768
C8731
R8515
R8322
C8732
R8518
C8540
C8735
IC8705
R8519
C8736
C8542
C8737
R7770
C8738
C8544
R7771
C8739
C8545
R7772
R8712
C8546
R8713
C8547
R8714
R8520
C8548
R8715
R8521
C8549
R8716
R8522
R8523
C8740
R8524
C8741
C8743
R8527
C8744
R8528
C8550
RJ9501
C8745
R8529
C8551
C8746
C8552
C8747
C8553
C8748
C8554
C8749
C8555
C8556
C8557
R8530
C8558
R8725
C8559
R8726
R8727
C8750
R8728
C8751
R8729
C8752
R8343
C8754
R8344
C8755
R8345
C8561
C8756
R8346
C9502
R8347
R8348
R8730
C8758
C8564
R8349
R8731
C8759
C9505
C9506
FB9002
C8566
C9507
FB9003
C8567
C9508
FB9004
C8568
C9509
C8569
R8543
R8350
C8760
R8544
R8351
C8761
R8545
R8352
R8546
R8353
R8547
R9100
R8354
C8764
R8160
C9510
R8548
C8570
R8355
C8765
R8161
C9511
C8571
R9102
R8356
C8766
C9512
C8572
R9103
R8357
C8767
C9513
C8573
R9104
R8358
C8768
C9514
C8574
R9105
R8359
C8769
C9515
R9106
C9516
C8576
R8743
R9108
R8744
C8578
R8745
C8579
R8746
R8747
R8748
R8360
C8770
R8361
C8771
FB9401
R8749
R8362
C8772
R8363
R8364
C8774
C8580
R8365
C8775
C9521
Q7001
R8559
C8581
R8366
Q7002
C8582
R8367
C9523
Q7003
C8583
R8368
R9114
C8778
C9524
Q7004
R8750
C8584
R8369
R9115
C8779
C7009
C9525
Q7005
D9501
R8751
C8585
R9116
C9526
R8752
C8586
C9527
C9528
R8754
R8560
C9529
R8561
R8562
R8757
R8563
R8370
C8780
C7010
R8564
Q7201
C8781
C7011
R8565
Q7202
C8782
C7012
C7206
R8566
R9507
C8783
C7013
R8567
C9530
C7014
R8568
C8785
C9531
C7015
R8569
C8786
C9532
C7016
IC9502
C8787
C9533
C7017
IC9503
IC9504
C7400
C9534
C8788
C7018
C7401
C8789
C9535
C7019
C7402
C9536
C7403
C9537
R9127
C7404
R9510
C9538
R9128
R8570
C7405
C9539
R9511
R8571
C7406
R9512
R8572
C7407
R9513
R8573
C7408
C7020
R9514
R8574
C7409
C8791
C7021
R9515
FL8701
C7215
R8575
C8792
C7022
R9516
FL8702
C7216
R8576
C7023
R9517
FL8703
R8577
C7024
C9540
R9518
FL8704
R9130
R8578
C7025
C9541
R9519
R9131
R8579
R9132
C9542
C7026
C7027
C9543
C7410
C9544
C7028
C7411
C7029
C9545
R7001
C7412
C9546
R7002
C7413
C9547
R7003
C7414
C9548
R9520
R7004
R8580
C7415
C9549
R9521
R7005
R8581
C7416
R9522
R7006
R8582
R7007
R9523
R8583
R9524
R7008
R8584
R9525
R7009
R8585
R9526
R8586
IC7003
R9527
R8587
C9550
C7034
R9528
R8588
C9551
R9529
C7035
FB7301
R8589
C9552
FB7302
C9553
C9554
R7010
R7205
C9555
R7011
R7206
C9556
R7012
C9557
R7013
R7208
C9558
R9530
R7014
R8590
R7209
C9559
R9531
R7015
R8591
R9532
R7016
R8592
R7017
R9533
C7040
R7018
C7041
R7019
R8597
R9537
R8598
C9560
R9538
C9561
R9539
C9562
C9563
C9564
R7020
C9565
C9566
R7022
R7023
C9567
C9568
R7024
C9569
R7025
R7219
R9542
R7026
R7027
C7050
R7028
C7051
R7029
R9545
RJ8001
C7052
R9546
RJ8002
C7053
RJ8003
C9570
RJ8004
R7220
R7221
C9571
RJ8005
R7222
C9572
RJ8006
R7223
C9573
RJ8007
R7224
C9574
R7030
RJ8008
R7225
R7031
RJ8009
R7226
C9576
R7032
R7227
C9577
R7033
R7228
C9578
R7035
R7036
R7036
R9553
R9554
R9554
R9555
C8001
R9556
C8002
R9557
C8003
C8004
C8005
Q8001
C8007
R7044
R9560
R9561
R7046
R9562
R7047
R9563
R9566
C8012
C8013
C8014
C8015
FL9501
C8016
FL9502
C8017
FL9503
C8018
FL9504
C8019
FL9505
FL9506
FL9507
FL9508
R9572
R9573
R9574
R9575
C8026
C8027
R8001
R8002
R9580
C8803
C8804
C8806
C8808
C8809
C8810
C8811
FB8501
FB8502
R9597
C8813
FB8503
C8814
FB8504
C8815
FB8505
FB8506
FB8507
FB8508
FB8508
R8021
R8022
R8023
R8024
R8025
R8026
R8027
R8028
R8029
C8821
C8822
C8823
C8824
C8825
C8826
C8827
R8030
C8828
R8031
C8829
R8032
R8033
R8034
R8035
R8036
R8037
R8038
R8039
C9002
C9004
C9005
Q9002
C9006
C9007
R8040
C9008
C9009
R8041
RJ9401
R8042
RJ9402
R8043
RJ9403
11
LC-60UD20
LC-70UD20
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH “ ” ( ) ARE
IMPORTANT FOR MAINTAINING THE SAFETY OF THE
SET. BE SURE TO REPLACE THESE PARTS WITH
SPECIFIED ONES FOR MAINTAINING THE SAFETY
AND PERFORMANCE OF THE SET.
IMPORTANT FOR MAINTAINING THE SAFETY OF THE
SET. BE SURE TO REPLACE THESE PARTS WITH
SPECIFIED ONES FOR MAINTAINING THE SAFETY
AND PERFORMANCE OF THE SET.
SCHEMATIC DIAGRAMS
Description of schematic diagrams:
VOLTAGE MEASUREMENT CONDITION:
1. The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 220-240V.
Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a
20k ohm/V tester.
20k ohm/V tester.
INDICATION OF RESISTOR & CAPACITOR:
RESISTOR
1. The unit of resistance “
1. The unit of resistance “
Ω ” is omitted. (K=kΩ=1000 Ω, M=MΩ).
2. All resistors are ± 5%, unless otherwise noted. (K= ± 10%, F= ± 1%, D= ± 0.5%)
3. All resistors are 1/16W, unless otherwise noted.
4. All resistors are 1/16W, unless otherwise noted.
3. All resistors are 1/16W, unless otherwise noted.
4. All resistors are 1/16W, unless otherwise noted.
CAPACITOR
1. All capacitors are μF, unless otherwise noted. (P=pF=μμ
1. All capacitors are μF, unless otherwise noted. (P=pF=μμ
F).
2. All capacitors are 50V, unless otherwise noted.
CAUTION:
This circuit diagram is original one, therefore there may be a
slight difference from yours.
slight difference from yours.
SAFETY NOTES:
1) DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACING PARTS.
2) SEMICONDUCTOR HEAT SINKS SHOULD BE
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
WHEN THE CHASSIS IS OPERATING.
!
12
LC-60UD20
LC-70UD20
8
1
2
3
4
5
6
7
9
10
G
F
E
D
C
B
A
SLOW_SW
FAST_SW
%82288
%82289
HP_L_ANALOG_OUT
HP_R_ANALOG_OUT
OPTICAL_OUT
OPTICAL_OUT
UART_232CTOCPU
UART_CPUTO232C
PC_RED
PC_GREEN
PC_BLUE
SC1_V_OUT
SC1_V_OUT
SC1FSW
SC/Y_CVBS2_IN
HP_PLUG
RCA_COMP1_PLUG
CVBS2_PLUG
RCA_CVBS1_PLUG
SLOWSW1
RCA_L_ANALOG
RCA_L_ANALOG
RCA_R_ANALOG
RCA_R_ANALOG
AUDIO_IN_R
PC_HDMI_L
PC_HDMI_R
CVBS2_SC_R
CVBS2_SC_L
HP_L_ANALOG_OUT
HP_R_ANALOG_OUT
PC_HDMI_L
PC_HDMI_R
SC_RED1/C1
SC_GREEN1
SC_BLUE1
CVBS2_SC_R
CVBS2_SC_L
RCA_COMP1_Y
RCA_COMP1_Y
RCA_COMP1_PB
RCA_COMP1_PB
RCA_COMP1_PR
RCA_COMP1_PR
PC_RGB_COM
PC_RGB_COM
RCA_COMP1_COM
SC_RGB_COM
SC_RGB_COM
RCA_CVBS_COM
TUNER_R_OUT
TUNER_L_OUT
CVBS_TU_OUT
TUNER_L_OUT
TUNER_R_OUT
I2C_VGA_SCL
I2C_VGA_SDA
EDID_WP_VGA
SLOWSW1
D5PLUG
RCA_CVBS1
RCA_CVBS1
RCA_COMP1_SOY
RS232C_OUT
RS232C_IN
HP_L
HP_R
PC_GREEN
PC_BLUE
PC_RED
SC1FSW
SC/Y_CVBS2_IN
SC/Y_CVBS2_IN
SC_RED1/C1
SC_RED1/C1
SC_GREEN1
SC_GREEN1
SC_BLUE1
SC_BLUE1
SC_BLUE1
AUDIO_OUT_R
*SC650
ZA263WJQZ
1
2
3
4
5
6
7
8
9
10
NC
11
12
NC
13
14
15
16
17
18
19
20
21
*R654
51K
*R673
1K
*R668
220
1/10W
1/10W
*C650
100P
(CH)
*C658
1000P
*C652
1000P
*VA654
VXA236WJ
*VA652
VXA002WJ
VXA002WJ
*C653
1000P
1000P
*D650
EXA689WJQZ
3.9V
*C656
1000P
*VA650
VXA002WJ
VXA002WJ
*VA651
VXA002WJ
VXA002WJ
*C657
1000P
*C659
1000P
*R652
10K
*R553
220
1/10W
220
1/10W
*C655
0.01u
*C654
0.01u
*VA653
VXA236WJ
VXA236WJ
*R674
1K
GND_A
*C663
1u
10V
1u
10V
KZA520WJQZ
NJW1351B
CAPLESS VIDEO AMP with LPF
1
CP1
2
V+
3
VIN
4
POWER SAVE
5
VOUT
6
GND
7
V-
8
CP2
*C662
1u
1u
10V
KZA520WJQZ
*C665
1u 10V
KZA520WJQZ
*C667
4.7u
10V
KZA931WJQZ
*FB655
A374WJQZ
*C666
0.1u
RCA_CVBS1_PLUG
005
SC_RED1/C1
005
R534 100
1/4W
CVBS2_SC_R
005
D516
EXA741WJQZ
EXA741WJQZ
5.6V
GND_A
SC_GREEN1
005
PC_VSYNC
005
R535
100
1/4W
R580
75
1/10W
HTL_RCOUT_IR_RS
007
I2C_VGA_SDA
002
R517
1K
C516
1000P
CZB
1000P
CZB
R510
100K
1
2
3
4
5
6
7
8
PC_HSYNC
005
GND_A
C508
1000P
50V
PC_BLUE
005
J501
EA111WJQZ
R502
56
56
1/10W
R508
100K
1
2
3
4
5
6
7
8
PC_RED
005
GND_A
C514
1000P
CZB
1000P
CZB
HP_PLUG
005
HP_R_ANALOG_OUT
010
D508
CDL37114
1
2
3
4
5
6
7
D3.3V
016
RCA_CVBS1
005
UART_232CTOCPU
007
C507
1000P
50V
D515
EXA741WJQZ
5.6V
R597
10K
1
2
3
4
5
6
7
8
R507
56
56
1/10W
PC_GREEN
005
R522
1K
OPTICAL_OUT
010
RCA_COMP1_PLUG
005
UART_CPUTO232C
007
HP_L_ANALOG_OUT
010
R578
75
1/10W
D5V
016
R516
1K
SC_BLUE1
005
R512
75
1/10W
75
1/10W
R579
75
1/10W
CVBS2_SC_L
005
I2C_VGA_SCL
002
R523
1K
R513
56
56
1/10W
SC501
NB116WJQZ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
C631
0.1u
16V
1
2
3
4
5
6
7
8
SC630
NB115WJQZ
RS232C
D-SUB
Vertical type
1
DCD
2
RxD
3
TxD
45
6
DSR
7
RTS
8
CTS
9
10
11
R633
100
1/10W
TL636
VA631
VXA236WJ
VXA236WJ
TL635
VA630
VXA236WJ
R636
10K
TL630
C630
0.1u
10V
D630
EXA741WJQZ
5.6V
5.6V
TL633
R634
100
1/10W
R635
100
100
1/10W
M3221EIP
1
EN
2
C1+
3
V+
4
C1-
5
C2+
6
C2-
7
V-
8
R1_in
9
R1_out
10
NC
11
T1_in
12
FORCEON
13
T1_out
14
GND
15
Vcc
16
SHDN
BU3.3V
016
C502
1000P
CZB
C501
1000P
CZB
C505
33P
CCZ
GND_A
C518
0.01u
25V
C517
0.01u
25V
R505
18
1/10W
R509
18
1/10W
C515
1000P
CZB
1000P
CZB
C510
1000P
CZB
1000P
CZB
SC/Y_CVBS2_IN
005
SC1FSW
005
CVBS_TU_OUT
005
SLOWSW1
005
*R671
100K
1
2
3
4
5
6
7
8
TUNER_R_OUT
010
PC_HDMI_L
005
PC_HDMI_R
005
TUNER_L_OUT
010
*C651
220P
*R653
75
75
1/10W
*R656
75
75
1/10W
*R660
75
1/4W
*R657
75
1/10W
*R658
75
75
1/10W
*R651
75
1/10W
J502
JA154WJPZ
YELLOW
WHITE
RED
1234567
R518
1K
1
2
3
4
5
6
7
8
*VA655
VXA236WJ
VXA236WJ
*VA656
VXA236WJ
VXA236WJ
*VA657
VXA236WJ
*VA658
VXA236WJ
VA523
VXA236WJ
*D651
EXA689WJQZ
3.9V
*R655
100
J503
JA054WJQZ
1
2
3
6
C503
1000P
CZB
C504
1000P
CZB
R503
18
1/10W
D510
EXA741WJQZ
5.6V
D509
EXA741WJQZ
5.6V
CVBS2_PLUG
005
R504
0
J504
JA157WJQZ
GREEN
BLUE
RED
1234567
D501
EXA741WJQZ
5.6V
R501
10
R536
33
TQ
33
TQ
R537
33
TQ
33
TQ
M24C02RM
EEPROM(DDC2)
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
EDID_WP_VGA
002
RCA_COMP1_PR
005
RCA_COMP1_Y
005
RCA_R_ANALOG
005
RCA_L_ANALOG
005
RCA_COMP1_PB
005
PC_RGB_COM
005
R515
0
SC501
付近に配置ください
RCA_COMP1_SOY
005
RCA_COMP1_COM
005
R514
0
J504
付近に配置ください
SC_RGB_COM
005
R659
0
SC650
付近に配置ください
R511
0
J502
付近に配置ください
RCA_CVBS_COM
005
D502
RU715UM
1
2
3
R524
220
SB1FF
1
2
3
4
5
6
7
8
R538
47K
1
2
3
4
5
6
7
8
GND_A
VGA_DDC5V
002
TL501
TL502
TL503
TL505
TL506
TL507
TL508
TL509
TL504
TL510
TL511
TL512
TL515
TL513
TL514
TL516
TL517
TL518
TL519
TL520
TL521
TL522
H:NORMAL
L:PDN
TO_CPU(005)
TO_POWER (016)
TO_HP_LINE-OUT(010)
HP_PLUG
UN-PLUGGED:H
PLUGGED:L
TO_HDMI(002)
TO_CPU(007)
TO_CPU(005)
4:POWSAVE
TO_CPU(005)
(
)
TO_CPU(005)
TO_CPU(005)
TO_CPU(005)
TO_HP_LINE-OUT(010)
ALTAIR
*IC650
IC630
DUNTKG445WE**
IC503
SPDIF
PC AUDIO INPUT
INPUT6/EXT2
INPUT6
INPUT6/EXT2
HP-OUT/AUDIO-OUT
1.7
3.3
0
2.5
0
0
-3.0
-1.7
1.6
5.0
0
0
0
0
0
0
3.3
3.3
3.3
3.3
0
0
0
3.3
0
3.3
0
0
0
3.3
3.3
0
0
0
0
4.7
4.7
0
4.8
MAIN Unit-1
(TERMINAL)
Click on the first or last page to see other LC-70UD20KN (serv.man2) service manuals if exist.