Schematic; Main Board - AOC L19W765 Service Manual

19'' LCD TV
9. Schematic Diagram

9.1 Main Board

VCC5_0
FB706
FB701
+ C733 + C724 C725 C726
470uF/16V 10uF/16V 0.0015uF 560pF
VCC5_TU
*Place very close to TU1 pins.
R729
R715 4.7K 1/10W
R2050
4.7K 1/10W
R730 470
9 TU_5V_SW
Q701
10K 1/10W 2SC2412KR
VCC5_0_T1
R732
NC
Q703
NC L712
L702
TV1_CVBS R733
3
NC
TV1_CVBS R728
3 TV1_CVBS
TU1
TUNER
VCC5_TU
VCC5_0_T1
600OHM
600OHM VCC5_0_T1
C734 C736 + C731
0.1uF 0.001uF 470uF/16V
R2051
NC
Q702 VCC5_0_T2
2SA1037AK(R)
R731
VCC5_0_T2
0 1/10W C737 C735
1/10W + C732
0.1uF 0.001uF
470uF/16V
C706
R734 C740
NC TV_OUT
NC NC
1
NC
0 1/10W TV_OUT
Tuner / Demodulator
DTT76832
22
TH1
23
TH2
24
TH3
25
TH4
R701 100 1/10W
L701
NC/0.22uH
C708
R702 100 1/10W
0.001uF
*Place C708 very
close to TU1.
VCC3_3 IF_AGC
R708 R709
3.3K 1/10W
3.3K 1/10W
FB703 2 1 600OHM TU_SDA
FB704 2 1 600OHM TU_SCK
C713 C712
22pF 22pF Place parts very close to TU1.
0.1uF SIF
T P V ( Top
T2486-1-X-X-5-070904
絬 隔 瓜 絪 腹
Key Component 02-Tuner and Demodulator
Tuesday , September 04, 2007
Date
34
C702
C709 C710
NC/56pF
NC NC
SIF R703 47 1/10W
C703
47pF
R713 2K 1/10W
C715
0.1uF
LED701
GREEN
1 2 R727 NC LOCK
4 3
YELLOW R726 NC FAIL
NC
VCC3V3_G9
R725 4.7K 1/10W
TU_SCK
TU_SDA
VCC1V8_G9
FB712 2 1 600OHM
C739 C738
0.01uF 4.7uF/25V
Victory Electronics Co . , Ltd. ) OEM MODEL
L32W761
TPV MODEL TV3267W-8AD
PCB NAME 715T2486
Sheet 2 of 15
AOC L19W765
U401A
Demodulator
R1
IFE_AIN_N
R2
IFE_AIN_P
P2
SIF_IN
N2
SIF_TRM
C705
0.1uF
P5
IF_AGC
R5
RF_AGC
T15
DEMOD_LOCK
N1
DEMOD_FAIL
D13
PARAM[2]
W1
PARAM[1]
R4
PARAM[0]
T6
I2C_TNR_CLK
T5
I2C_TNR_DAT
R3
IFE_VDD1V8
N4
IFE_GND1
P3
IFE_GND2
ZR39760BGCG-A1
Size Custom
Rev 1
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