Schematic Diagram; Main Board - Norcent LT3290 Service Manual

32'' LCD TV

9. Schematic Diagram

9.1 Main Board

ANT IN
TU701
TH1
TH2
TH3
TH4
C706 0.1uF
9 TV1_CVBS
C4L1
NC/1800pF
VCC5_0_T1
VCC5_0_T2 FB703 600OHM
R708 47K 1/10W 2
R709 10K 1/10W 2
FB704 600OHM
C712 C713
22pF 22pF
L711 0.33uH
C727 C729
47pF 82pF
FB705
600OHM
VCC5_0
2 1 L706
CHIP INDUCTOR 1.0uH +-10%
R717
2K 1/10W 680 1/10W
R718
C718
R720 0.01uF C720
0.01uF
68 1/10W
Q701
BFR93A
R722 R723
2K 1/10W C721 68 1/10W
0.01uF
I2C0CLK
6,12 I2C0CLK
I2C0DATA
6,12 I2C0DATA
U702
13 IF_AGC 4
VAGC OUT1
14
OUT2
15 2
IN1
16 3
IN2
GND
1
Vcc GND
UPC3218GV-E1-A
2
C707
SIF C708
0.1uF 0.001uF
C709 C710
0.01uF 0.01uF
1 TU_SDA
1 TU_SCK C714
NC/ 1pF * Do notinstall.
L710 0.33uH
R715 3.9K 1/10W
C728
L707 1.8uH
47pF
C716 C717
0.001uF 0.1uF
SF701
EMI FILTER
C719 1 5
INPUT OUTPUT
0.01uF
IF
Filter
2 4
INPUT OUTPUT
VCC5_0
C733 + C724 C725
+
470uF/16V 10uF/16V 0.0015uF
R701
7 C701 100 1/10W 94
0.01uF
6 C702 93
56pF
L701 97
8 0.22uH 96
5 C705
C704 C703 4
0.01uF 47pF
0.1uF 10
R702 100 1/10W 14
R703 21
1 25
VCC5_0
FB702 47 1/10W 27
600OHM 31
38
SIF 42
47
C711 89
90
0.1uF
100
1
VCC3V3_DM R725 10K 1/10W 58
59
I2C0DATA 20
I2C0CLK 19
TU_SDA 16
TU_SCK 18
VCC3V3_DM R714 10K 1/10W 13
61
3 OREN_RST
2
8
80
79
R721
100
C722
22pF
FB701
600OHM
C737 C734 C735 C736
0.1uF 0.1uF 0.001uF 0.001uF
FB706
C726
+
560pF C731
470uF/16V
600OHM
Tuner / Demodulator
32
U701A
36
AIN2_P D_OUT0
OREN 39
AIN2_N D_OUT1
Demodulator 40
D_OUT2
41
AIN1_P D_OUT3
43
AIN1_N D_OUT4
44
D_OUT5
48
D_IN0 D_OUT6
49
D_IN1 D_OUT7
TP700
D_IN2
29
D_IN3 D_VALID
34
D_IN4 D_SOP
28
D_IN5 D_CLK
32
D_IN6 D_FAIL
D_IN7
24
D_IN8 STAT0
26
D_IN9 STAT1
50
STAT2
51
AIN_OOB_P STAT3
52 47 1/10W R704 TU_VALID
AIN_OOB_N STAT4
54 47 1/10W R705 TU_FRAME
STAT5
56 47 1/10W R706 TU_SCLK
PARAM0 STAT6
57 47 1/10W R707 TU_SDATA
PARAM1 STAT7
PARAM2
66 47 1/10W R710
PARAM3 AU_CLK
63 47 1/10W R711
AU_WS
65 47 1/10W R712
SDA_I2C AU_SD
64
SCL_I2C AU_MCLK
TU_SDA
11 R713 2K 1/10W
TU_SCL IF_AGC
12
I2C_ADDR RF_AGC
C715
71
RST LO_OUTP
72 0.1uF
SCAN_EN LO_OUTN
R716
SCAN_MODE
67
NC/ 10K
CRX
68
XTI DRX
XTO
VCC3V3_DM
CAS-220/CS
1/10W
X701
25MHz
C723
22pF
VCC5_0_T1
VCC5_0_T2 VCC5_0_T2
+ C732
470uF/16V
Title
Page 02 - Tuner and Demodulator
Size Document Number
T1961-F-X-X-1-070118
B
Date: Thursday , January 18, 2007
Norcent LT3290
TP701
TU_VALID 3
TU_FRAME 3
TU_SCLK 3
TU_SDATA 3
BCLK
BCLK 8,14
LRCLK
LRCLK 8,14
TU_DATA
TU_DATA 14
IF_AGC
C730
22pF
Rev
F
Sheet 2 of 19