![background image](http://html.mh-extra.com/html/sharp/lc-20dv20u/lc-20dv20u_service-manual_373836076.webp)
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
C568
680
16V
FM
C542
1200
35V
FM
C550
10
50V
MHE
C511
100
200V
ED
C525
4.7
50V
YXF
C516
1
50V
YXF
C510
590
200V
EE
C526
4.7
50V
YXF
C501
22
16V
KA
C539
1200
35V
FM
C583
100
200V
ED
C519
1
50V
YXF
C505
100
16V
MHE
Q513
KTC3875S_Y_RTK
LCD5V_SW
Q511
KTC3875S_Y_RTK
P.CONSW
Q501
KTC3198
RELAY DRIVE
R594
4.7K
R590
4.7K
R583
2.7K +-1%
R586
560 +-1%
R568
8.2K
R571
4.7K
R556
1K
+-1%
R558
2.7K
+-1%
R557
390
+-1%
R579
1K
+-1%
R547
1K
R538
1K 1/4W
R541
22
1/2W
R545
2.2K 1/4W
R574
0.047 1/4W
R573
0.047 1/4W
R572
0.047 1/4W
R564
33K
R582
22K
1/4W
R587
2.2K
R589
10K
R592
100
R577
2.7K +-1%
R575
1K+-1%
R553
22K
R523
15K
1/4W
R522
15K
1/4W
R540_1
1K1/4W
R531
1K
R501
2.7K
1/4W
R542
10
1/2W
R536
1K 1/4W
R526_1
1K1/4W
R584
1K
+-1%
R588
470
+-1%
R585
2.7K
+-1%
R578
22K
R576 1001/4W
R591
4.7K
R520
27K 1/4W
R517
27K 1/4W
R552
2.7K
+-1%
R551
1.8K
+-1%
R550
22K
+-1%
R514
1K
R512
150
R561
1001/4W
R595
1K
R567
100
R543
1.5K
1/4W
R548
10K
R546
1K 1/4W
R544
1001/4W
R506
2.2K
R510
1K
R504
10K
+-1%
R513
100 1/4W
R555
1K
R559
10K
R580
270
+-1%
R533
1K
R525
10K
1/4W
R507
1.5M
1W
R518
4.7K
1/4W
R503
270
+-1%
R508
100 1/4W
R519
15K 1/4W
R502
10K
1/4W
R521
100
R505
2.7K
+-1%
R515
100
R509
10K
R563
2.2K
R549
3.9K 1/4W
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
C544
0.1
B
C564
0.15
B
C531
220P
2KV
R
C532
220P
2KV
R
C553
0.01
B
C552
0.1
B
C559
27P
CH
C556
0.01
B
C554
0.1
B
C557 0.1 B
C533
0.1 B
C573
0.1
B
C565
0.47
B
C563
0.1
B
C520
0.01
B
C524
0.01
B
C503
0.22
275V
ECQUL
C507
0.1
275V
ECQUL
C513
0.0018
2KV
R
C517
0.01
B
C514
470P CH
C518
470P B
C536
220P R
C566
0.01
B
C571
0.1 B
C534
0.15 B
C581
0.1
B
C577
0.1
B
C506
0.0015
250V
KX
C504
0.1 B
C502
0.0047 B
C522
0.0047
B
C527
0.039
400V
ECWF
C515
680P
2KV
R
C530
220P
250V
KX
C529
470P
250V
KX
C509
0.22
275V
ECQUL
C523
0.039
400V
ECWF
C521
220P
2KV
R
C580
0.1
B
C575
0.1 B
C576
0.1 B
C574
0.1 B
C578
0.1
B
C585
0.22
B
C546_1
100
16V
MHE
C541_1
100
16V
MHE
C560
680
16V
FM
C535
1000
25V
FM
C548
220
16V
MHE
C545
1000
16V
FM
C543
1000
16V
FM
C555
680
16V
FM
C582
4.7
50V
MHE
C540
1000
25V
FM
C569_1
100
16V
MHE
C567_1
100
16V
MHE
C562_1
100
16V
MHE
C547
220
16V
MHE
C549
1200
35V
FM
C537
2200
10V
FM
C572
680
16V
FM
C584
1000
6.3V
MHE
C558_1
100
16V
MHE
C538
2.2
50V
MHE
W825
W805
W821
W822
W824
W806
W801
W804
W816
W820
W818
W823
CAUTION: DIGITAL TRANSISTOR
Q514
KRC102SRTK
LCD5V_SW
Q507
KRC102SRTK
DTV+5V SW
Q515
KRC102SRTK
DTV+5V SW
Q505
KRC102SRTK
ST-BT_CTL
Q502
KRC102SRTK
PROTECT
D515
MTZJ6.2B
D517
MTZJ6.2B
D514
MTZJ5.6B
D506
MTZJ2.2B
D534
MTZJ27B
Q508
KTA1504S_Y_RTK
POWER_FAIL
Q503
KTA1504S_Y_RTK
PROTECT
:SINCE THESE PARTS MARKED BY
CAUTION
DESCRIBED IN PARTS LIST ONLY
CRITICAL FOR SAFETY,USE ONES
ARE
DANS LA NOMENCLATURE DES PIECES
N’UTILISER QUE CELLS DECRITES
DANGEREUSES AN POINT DE VUE SECURITE
:LES PIECES REPAREES PAR UN
ETANT
ATTENTION
TR504
W5T29X7.5X19
TR507
W5T29X7.5X19
HS506
763WAAA070
HS503
763WAAA070
HS507
763WAAA070
R537
100K
2W
R530
0.22
1W
R534
100K
2W
R524
0.27
1W
R527
0.27
1W
D540
EC31QS04
D538
1SS355
D520
SARS01-V1
D522
1SS133
D523
1H3-E
D535
21DQ09N
D543
SR340-004
D542
EC31QS04
D541
EC31QS04
D545
1N4005-EIC
D539
EC31QS04
D502
21DQ09N
D529
1H3-E
D519
1SS133
D501
1H3-E
D524
1H3-E
D516
1SS133
D527
1SS133
D525
1SS133
D526
1SS133
D513
1SS133
D511
RM11C-EIC
D510
RM11C-EIC
D521
1SS133
D512
1SS133
D509
RM11C-EIC
D508
RM11C-EIC
D518
RU3AM
D504_2
DSS-302M
D505
ENE271D-10A
D503
ENE241D-10A-Q6
CP514
003P-2100
1
CP513
003P-2100
1
CP505
003P-2100
1
CP504
003P-2100
1
CP506
A2001WV2-14P
1
10
11
12
13
14
2
3
4
5
6
7
8
9
RY501
ALKS329_A60
1
2
3
4
D530
FMX-22S
1
2
3
D531
FMX-22S
1
2
3
D528
FMX-22S
1
2
3
D532
RB085T-40
1
2
3
D533
YG862C15R
1
2
3
IS THE LIVE CONNECTION
CAUTION:
L506
SS30V-R250092
COIL,LINE FILTER
1
2
3
4
L507
SS30V-R250092
COIL,LINE FILTER
1
2
3
4
FH502
EYF-52BCY
FH501
EYF-52BCY
F501
6.3A125V
6.3A 125V
IC511
PS2561AL1-1-V(W)
FEED BACK
1
2
34
IC512
PS2561AL1-1-V(W)
1
2
34
R535
100
1/4W
R532
100
1/4W
R529
0.22 1W
L504
33uH7313N
L502
6.8uH
RCH8011NP-6R8L
L501
22uHTSL0808
L505
10uH7313N
L503
6.8uH
RCH8011NP-6R8L
IC501
KIA431A-AT
REGULATOR
1
2
3
IC504
KIA431A-AT
REGURATOR
1
2
3
CP510
A2501WV2-2P
1
2
CP511
A2501WV2-12P
1
10
11
12
2
3
4
5
6
7
8
9
CP512
A2501WV2-4P
1
2
3
4
CP509
A2001WV2-4P
1
2
3
4
CP508
A2001WV2-7P
1
2
3
4
5
6
7
CP507
A2501WV2-7P
1
2
3
4
5
6
7
B507
BLM18PG181SN1D
B506
BLM18PG181SN1D
B502_1
W4BRH3.5X6X1.0
B505
BLM18PG121SN1D
B508
BLM18PG121SN1D
B501
W4BRH3.5X6X1.0X2
F502
20N_7000FSW
T502
81420774
1
10
11
12
13
14
15
16
2
3
4
6
7
8
9
HS505
763WAAA145
HS504
763WAAA142
HS501
763WAAA143
HS502
763WAAA142
IC503
STR-W6735
POWER_SW_CTL
1
3
4
5
6
7
IC502
STR-X6737
POWER_SW_CTL
1
2
3
4
5
6
7
T501
81350964
1
10
11
12
13
14
15
16
2
3
5
6
7
8
9
Q504
RSS050P03
P.CONSW
1234
5
6
7
8
IC509
AL1015
DTV 5V CONTROL
1
2
3
4
5678
IC510
PQ090RDA1SZH
24
9V_REGULATOR
1
2
3
4
IC505
BA7810T-V5
24
5V_REGULATOR
1
2
3
4
5
IC508
LA5774-E
24
5V_REGULATOR
1
2
3
4
5
IC506
BA00BC0WCP-V5
24
5V_REGULATOR
1
2
3
4
5
D507
RBV-608
1
2
3
4
TH501
NTPAN3R0LDKB0
CD505
CU2E5101
CD508
CD010701
CD507
CD010701
S
D
G
Q512
2SJ650
DC/DC SW
6.3A 125V
6.3A 125V
REPLACE ONLY WITH THE SAME TYPE FUSE
:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
CAUTION
N’UTILISER QUE DES FUSIBLE DE MEME TYPE
:POUR UNE PROTECTION CONTINUE LES RISQUES D’INCEIE
ATTENTION
J502
CCT2302-0911
12
R600
17W
SH504
TP00385-21
SH503
TP00385-21
SH501
TP00385-21
SH502
TP00385-21
BACKLIHGTON
LIGHT_CTL
GND
P.CON+5V
GND_DTV
AT+5V
D4V
DTV+5V
DTV+5V
GND
AT+12V
GND_DTV
SOUND+B
AT+12V
SOUND_GND
P.CON+9V
GND
P.CON+9V
P.CON+5V_LCD
P.CON+12V
UNREG+12V
P.CON+5V
AT+5V
P.CON+12V
GND
ST-BY_H
POWER_ON-H
P.CON+9V
SOUND+B
POWER_FAIL
SOUND_GND
P.CON+5V_LCD
POWER_FAIL
LCD-H
AT+5V
GND
AT+5V
BACKLIHGTON
LIGHT_CTL
POWER_ON-H
LCD-H
P.CON+5V
UNREG+12V
UNREG+6V
UNREG+12V
SOUND+B
AT+5V
P.CON+5V
UNREG+6V
SOUND+B
ST-BY_H
GND
H-48
H-47
(POWER PCB)
POWER3 SCHEMATIC DIAGRAM
0
380
0
3.0
0
0
6.5
0
NC
NC
+24V
+24V
+24V
GND
GND
GND
GND
+24V
BL ON/OFF
+24V
GND
Brightness Ctl
SIGNAL GND
NC
NC
NC
0
0
0
0
3.0
6.0
0
0.7
5.0
FROM/TO AC INLET
7A 250V
CHASSIS GND
9.8
0
2.5
REF
ANODE
CATHODE
PCB240
7A 250V
6.3A 125V(F501)
6.3A 125V(F501)
:F503 IS MANUFACTURED BY SKYGATE CO.,LTD, TYPE 20N.
CAUTION
S
S
VCC
SS/OLP
FB OCP/BD
D
20
0
0.1
NC
0
0
NC
0
0.7
0.6
G
D
D
D
SSS
D
VIN
VOUT
G
FB ON/OFF
CATHODE
ANODE
REF
19.6
0
2.4
VIN
VOUT
ADJ
TO INVERTER PCB
ON/OFF VIN
GND
VOUT
AND 7A 250V(F502)
ET 7A 250V(F502)
380
0.5
0.5
19.5
1.0
0.8
380
250
250
170
11.9
10.8
8.9
20.5
12
6
6
0
NC
12
0
NC
4.5
11.9
4.5
2.5
1.25
0
5.0
11.9
2.5
11.9
5.0
5.0
11.95
11.95
11.95
11.95
7
12
12
12
1.25
5.0
0
12.0
12.0
GND
VIN
ON/OFF
0
9.0
GND
1.25
VADJ
5.1
1.25
0
5.9
2.5
VOUT VADJ
19.6
20.7
8.4
VIN
CS
EXT
GND
FB
CC
VREF
V5/PWOH
DTV UNREG+4V
DTV UNREG+4V
(CP3808)
FROM/TO POWER
D
S
VCC
SS/OLP
FB OCD/BD
0.1
1.0
0.8
170
380
NC
0
18
250
250
GND
GND
GND
NC
345
24
24
11.8
5.1
0
1.3
6.8
11.2
DTV UNREG+5V
DTV UNREG+5V
0
7.5
0
1.7
9.8
1.7
0
0
0
4.2
5.0
CEF171
GND
POWER_FAIL
LCD-H
AT+5V
POWER ON-H
(CP3804)
BACKLIGHT ON
LIGHT_CTL
FROM/TO POWER
SOUND GND
SOUND GND
SOUND+B
SOUND+B
(CP3801)
FROM/TO POWER
12VSC
12VSC
GND
GND
GND
GND
GND
ST-BY_H
INVETER_DET
5V SC
5V SC
5V SC
(CP3803)
FROM/TO POWER
GND
9VSC
(CP3802)
FROM/TO POWER
GND
DVD+12V
GND
DVD+12V
(CD501)
FROM/TO REGULATOR2
19.5
20.5