![background image](http://html.mh-extra.com/html/sharp/lc-20dv20u/lc-20dv20u_service-manual_373836075.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
W808
C3420
100
6.3V
SJV
C3423
47
16V
SJV
C3424
220
6.3V
SJV
C3428
330
6.3V
TZV
C3432
100
6.3V
SJV
C3435
220
6.3V
SJV
D3405
EC31QS04
D3403
EC11FS2-TE12L
D3404
EC11FS2-TE12L
D3406
EC31QS04
D3402
EC31QS04
D3408
RSX301L-30
D3407
RB520S-30-TE61
Q3404
KRC103SRTK
SW
Q3406
KRC103SRTK
POWER_SW
IC3403
BD7820FP
DH
REG+1.8V
1
2
4
5
6
IC3402
BA00BC0WFP
DH
REG+3.3V
1
2
4
5
6
CAUTION: DIGITAL TRANSISTOR
CAUTION: DIGITAL TRANSISTOR
: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
IC3401
AL1042
DC/DC CTL
1
10
11
12
13
14
15
16
2
3
4
5
6
7
8
9
IC3404
BA7810HFP
REG+2.6V
1
2
3
4
5
6
Q3405
SP8K3
DUAL FET
1
2
3
4
5
6
7
8
L3401
4.7uH
ELLCTV4R7N
Q3403
KTC3875S_Y_RTK
SW
Q3407
KRA101SRTK
POWER_SW
C3407
470
6.3V
CV-EX
C3416
100
6.3V
TZV
C3415
150
2V
CD
C3434
0.1
B
C3430
0.1
B
C3408
0.001
B
C3410
1B
C3409
15P
CH
C3425
1B
C3426
0.1
B
C3421
0.1
B
C3419
0.1
B
C3418
0.1
B
C3431
1B
C3411
0.22
B
C3412
10
B
C3413
10
B
C3429
0.1
B
R3434
1.8K
R3412
12K
+-1%
R3410
1.2K
+-1%
R3411
5.6K
+-1%
R3406
4.7K
R3433
5.6K
R3432
220
R3405
10K
R3401
3.3K
R3420
560
+-1%
R3419
39
R3418
1K
+-1%
R3421
1K
+-1%
R3423
680
+-1%
R3422
10
R3426
820
+-1%
R3425
120
R3424
1K
+-1%
R3414
5.6
R3413
15K
R3429
100
R3430
100
R3428
0.047
1/4W
R3427
0.047
1/4W
B3402
BLM31PG391SN1L
B3401
BLM18PG330SN1D
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
CORE_1.2V
CORE_1.2V
+1.8V
+3.3V
D_GND
+3.3V
D_GND
+3.3V
+1.8V
D_GND
+5V
+3.3V
+3.3V
+1.8V
+1.8V
+2.6V
+2.6V
UNREG+5V
D_GND
UNREG+4V_M
UNREG+4V
AT+5V
DTV_ON-H
D_GND
D_GND
+3.3V
+3.3V
+1.8V
+1.8V
+2.6V
+2.6V
H-46
H-45
0
3.1
5.3
5.3
5.2
5.2
D1
D1
D2
D2
S1
G1
S2
G2
POWER2 SCHEMATIC DIAGRAM
(DIGITAL PCB)
3.18
4
0
1.27
2.6
GND
EN
Vin
Vout
Vadj
0
4.5
0
0
0
2.9
0
1.25
1.8
3.25
3.18
V_ADJ
V_OUT
V_IN
V_C
GND
0
3.3
4
3.18
1.26
V_ADJ
V_OUT
V_IN
V_C
GND
FROM/TO AV OUT
TO FRONT END
TO FLASH
TO ASIC
TO SDRAM
TO AV OUT
PCBDH0
CEF169
1.2
0.8
3.3
0
3.3
2.9
0
3.3
1.3
10.3
0.1
5.4
0
5.1
5.2
5.2
5
5 1.3 1.3
2.7 1.3 3.5
0