Schematic; Main Board - Hitachi 19LD4550U Service Manual

19"LCD TV
9. Schematic Diagram

9.1 Main Board

CN505
DB15
11 1 RED
6 RED_GND
VGASDA_IN 12 2 GRN
7 GRN_GND
HSY NC# 13 3 BLU
8 BLU_GND
VSY NC# 14 4
9
VGASCL_IN 15 5
10
L515
HSY NC# 1
80 OHM
C557
5pF
L517
VSY NC# 1
80 OHM
C561
5pF
FB511
1 2
300 OHM
CN506
R567
1
2 VGAL_IN
8.2K OHM 1/10W
R570
3 VGAR_IN
8.2K OHM 1/10W
PHONEJACK
R550
0 OHM 1/10W
VGA_PLUGPWR
2
HSY NC 4
ZD510 R561
2.2K OHM 1/10W
2
VSY NC 4
ZD512 R566
2.2K OHM 1/10W
R568 C563 10uF/10V
3K OHM 1/10W
R571 C564 10uF/10V
3K OHM 1/10W
R551
0 OHM 1/10W
L513
GRN 1 2
80 OHM ZD508
C552
5pF
GRN_GND R555
0 OHM 1/10W
L514
BLU 1 2
80 OHM ZD509
C555
5pF
BLU_GND R559
0 OHM 1/10W
L516
RED 1 2
80 OHM ZD511
C559
5pF
RED_GND R564
0 OHM 1/10W
R582
14,20 HDMIED_WP
R569
AIN0_L 11
20K OHM 1/10W
VGASCL_IN
VGASDA_IN
R572
AIN0_R 11
20K OHM 1/10W
T P V ( Top Victory
絬 隔 瓜 絪 腹
Key Component VGA IN L/R
Date Friday , June 20, 2008
77
R552 C550 4700pF
SOG
0 OHM 1/10W
R553 C551 0.01uF/25V
GP
39 OHM +-1% 1/10W
R556 C553 0.01uF/25V
GN
100 OHM 1/10W
R557 C554 0.01uF/25V
BP
39 OHM +-1% 1/10W
R560 C556 0.01uF/25V
BN
100 OHM 1/10W
R562 C558 0.01uF/25V
RP
39 OHM +-1% 1/10W
R565 C560 0.01uF/25V
RN
100 OHM 1/10W
D512 BAT54C
+5VSB 2
Q505
MMBT3904 VGA_PLUGPWR 1
RN501
10K OHM 1/10W 4.7KOHM +-5% 1/16W
1 8
2 7
3 6
4 5
R573 100 OHM 1/10W
R574 100 OHM 1/10W
ZD515 ZD516
Electronics Co . , Ltd. ) OEM MODEL
TPV MODEL
PCB NAME
715T3009
Sheet 3 of 21
Hitachi 19LD4550U
4
4
4
4
4
4
4
3
C562
0.22uF
U510
8 1
VCC E0
7 2
WC E1
6 3
SCL E2
5 4
SDA VSS
M24C02-WDW6P
R722
Size B
Rev H
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