Operating instructions
26’’ LCD TV Envision L26W761
35
9. Schematic Diagram
9.1 Main Board
TV1_CVBS3
R731
0 1/10W
IF_AGC
+
C733
470uF/16V
VCC3V3_G9
LOCK
C726
560pF
+
C740
NC
R715
4.7K 1/10W
+
C732
470uF/16V
TV1_CVBS
VCC5_0
VCC5_0_T1
R730
10K 1/10W
TV_OU TL712 NC
R708
3.3K 1/10W
TU_5V_SW9
R2050
470 1/10W
+
C724
10uF/16V
GREEN
FB712 600OHM12
Demodulator
U401A
ZR39760BGCG-A1
R5
P5
T15
N1
P2
R1
R2
R4
W1
N2
D13
T6
T5
R3
N4
P3
RF_AGC
IF_AGC
DEMOD_LOCK
DEMOD_FAIL
SIF_IN
IFE_AIN_N
IFE_AIN_P
PARAM[0]
PARAM[1]
SIF_TRM
PARAM[2]
I2C_TNR_CLK
I2C_TNR_DAT
IFE_VDD1V8
IFE_GND1
IFE_GND2
TU_SD A
R701 100 1/10W
R702 100 1/10W
C713
22pF
R729
4.7K 1/10W
R728 0 1/10W
Place parts very close to TU1.
L701
NC/0.22uH
C709
NC
VCC5_TU
R703 47 1/10W
LED701
NC
2
3
1
4
C703
47pF
VCC5_0_T1
FB706 600OHM
+
C731
470uF/16V
R709
3.3K 1/10W
C725
0.0015uF
FAIL
Tuner / Demodulator
TU_SD A
C712
22pF
C735
0.001uF
C710
NC
FB701 600OHM
C706 0.1uF
R727 NC
*Place very close to TU1 pins.
R733
NC
TV_OU T
VCC1V8_G9
C734
0.1uF
C705
0.1uF
C737
0.1uF
R713 2K 1/10W
TU_SC K
L702
NC
1
2
3
Q702
2SA1037AK(R)
R734
NC
R726 NC
DTT76832
SIF
C739
0.01uF
FB703 600OHM12
R732
NC
C736
0.001uF
TU_SC K
Q701
2SC2412KR
C715
0.1uF
VCC5_0_T2
VCC5_TU
TU1
TUNER
22
21
14
17
18
16
20
13
12
11
19
15
10
9
8
7
6
5
4
3
2
1
23
24
25
TH1
D-IFOUT2
SCL
IF_OUT
IF_AGC
AS
D-IFOUT1
NC3
GND1
VT
GND2
SDA
NC2
NC1
VCC2
AF_OUT
DC_FEED
RF_AGC
CVBS
SIF
VCC1
OOB_OUT
TH2
TH3
TH4
TV3267W-8AD 1
L32W761
Custom
215Tuesday , September 04, 2007
715T2486
<
称爹
>
02-Tuner and Demodulator
T2486-1-X-X-5-070904
OEM MODEL Size
Rev
Date
Sheet
of
TPV MODEL
PCB NAME
称爹
T P V ( Top Victory Electronics Co . , Ltd. )
Key Component
絬
隔
瓜
絪
腹
C708
0.001uF
TV1_CVBS
C738
4.7uF/25V
VCC3_3
R2051
NC
VCC5_0_T1
FB704 600OHM12
VCC 5_0_T2
SIF
*Place C708 very
close to TU1.
R725 4.7K 1/10W
Q703
NC
YELLOW
C702
NC/56pF