AOC 55C2U-DVB, Service Manual

Page: 56 / 57

5
5
4
4
3
3
2
2
1
D D
C C
B B
A A
IF-IN+
SCL-T
SDA-T
V
DD_1.8V
_O
UT
P
U
T
V
DD_1.8V
_O
UT
P
U
T
SCL-T
SDA-T
IFAGC
IF-IN-
DIFP
DIFM
RF
VDD_1.8V_OUTPUT
IF-AGC IFAGC
RF-IN
IF-
IN-
IF-
IN+
IF-AGC_T
IF-_T#
IF+_T#
SDA_T
SCL_T
IFAGC_T IF-AGC_T
VDD_1.8V_T
TUNER_RESET_T
IF-
IN+
_T
IF-
IN-
_T
V
DD_1.8V
_T
SDA_T#
SCL_T# RF_IN
RF_Air
RF_Cable
RF_SW
RF_IN
RF_AIR#
RF_Cable#
RF_SW
TUNER_RESET_T
IF+_T
IF-_T
IF-AGC_T
SDA_T
SCL_T
SDA_T
SCL_T SCL_T#
SDA_T# SDA_T#
IF-IN+_T
IF-IN-_T
IF+_T
IF-_T
SDA_T# SDA_T#
IF-_T
IF+_T
+3.3V_TU
+3.3V_TU
+3.3V_TU
+3.3V_TU
+3.3V_TU_T
GND_TUNER
GND_TUNER
+3.3V_TU_T
+3.3V_TU_T
+3.3V_TU_T
+3.3V_TU_T
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER GND_TUNER
GND_TUNER
GND_TUNER
+3.3V_TU_T
GND_TUNER
GND_TUNER
GND_TUNER
+3.3V_TU_T
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
+5V_Normal_T
+5V_Normal
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER +3.3V_TU
+3.3V_TU_T
+5V_Normal_T
GND_TUNER
+3.3V_TU_T
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
GND_TUNER
I2C-SDA 3,4,6,10
I2C-SCL 3,4,6,10
DIFM 4
DIFP 4
IF-AGC 4,10
TUNER_RESET 4
TUNER_RESET 4
I2C-SDA 3,4,6,10
I2C-SCL 3,4,6,10
DIFP 4
DIFM 4
IF-AGC 4,10
Close Tuner
75 ohm Line
AGC RC Filter &I2C(IIC
串的电阻在
IC
端已经有）
DIF IN&OUT
For S11 test
replace for Balun
Part Num BALUN NO BALUN
L908
R909
R908
L907
L903
C936
NC
0R
NC
2.2nH
nc
NC
18nH
NC
0R
8.2nH
18nH
5.6pF
kick back filter:220nH/47pF
改善
ATV
水波纹！
Addr 0xC0
RF SIGNAL INPUT
This document for ShenZhen KTC Technology CO., Ltd and presented party internal use only,
Do not spread to third party without the written permission.
Copyright@ ShenZhen KTC Technology Co., LTD
后面要求
NC.
选用
Close Tuner
Addr 0xC0
replace for Balun
75 ohm Line
Part Num NO BALUN BALUN
RF SIGNAL INPUT
R909
L908
L903
L907
R908
C936
NC
0R
NC
For S11 test
560nH
2.2nH
NC
18nH
8.2nH
0R
NC
5.6pF
18nH
改用
150pf
改用
150pf
C1 RF2 RF1 C2
ON
LOW
HIGH GND
GND OFF
OFF
ON
CABLE
AIR
RF SWITCH
TUNER POWER
kick back filter:220nH/47pF
改善
ATV
水波纹！
MXL661
C939
10nF
C939
10nF
R907
1M R907
1M
TD3
BAV99 TD3
BAV99
3
1 2
U906
MxL661
U906
MxL661
VDD_3p3_1
1
LNA_INP
2
LNA_INN
3
VDD_1p8_1
4
AGC_2/GPO3
5
AGC_1
6
IF
_O
UT
N_1
9
IF_OUTP
_1
10
IF
_O
UT
N_2/G
P
O
_1
7
IF
_O
UT
P
_2/G
P
O
_2
8
V
DD_3p3_2
11
V
DD_1p8_2
12
VDD_1p2
13
GND_DIG
14
VDD_IO
15
SCL
16
SDA
17
CLK_OUT
18
X
T
A
L_N
19
XT
AL
_P
20
G
ND_X
T
A
L
21
V
DD_1p8_3
22
R
E
SET
_N
23
AS
24
GN
D
25
GN
D
26
GN
D
27
GN
D
28
GN
D
29
GN
D
30
GN
D
31
GN
D
32
GN
D
33
C934 1nF C934 1nF
CON3
VGA
CON3
VGA
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
16
17
L907
2.2nH
L907
2.2nH
C906
33pF
C906
33pF
TC55
0.1uF
TC55
0.1uF
T902
BW21S7511A01TF
T902
BW21S7511A01TF
1
2
4
3
L906
FB(1000ohm,200mA)
L906
FB(1000ohm,200mA)
R910
1M
R910
1M
L904
560nH
L904
560nH
C929 1nF C929 1nF
TC54
10uF
TC54
10uF
TC26 4.7NF/1KV TC26 4.7NF/1KV
C931
1uF
C931
1uF
C918
0.1uF C918
0.1uF
D01
BAV99 D01
BAV99
3
2
1
TC29 1NF/2KV TC29 1NF/2KV CON1
TUNER_CONNECTOR
CON1
TUNER_CONNECTOR
1
2
3
4
TC57
0.1uF TC57
0.1uF TC60
10uF/6.3V
TC60
10uF/6.3V
L910
2.2nH
L910
2.2nH
C813
2.2uF
C813
2.2uF
C925 1nF C925 1nF
C921
0.1uF C921
0.1uF
R916 33R R916 33R
C940 1nF C940 1nF
C916
NC/47pF C916
NC/47pF
C928
0.1uF C928
0.1uF
TCON1
VGA_ 公座
TCON1
VGA_ 公座
1
6
2
7
3
8
4
9
5
11
12
13
14
15
10
16
17
C6
0.1uF/NC
C6
0.1uF/NC
CON2
Mxl661
CON2
Mxl661
DIFN
3
CLK_OUT
4
SDA
6
GND
5
GND
11
ANT_DC
9
GND
10
GND
12
GND
13
IF_AGC
1
DIFP
2
SCL
7
3.3V
8
C945
33pF
C945
33pF
TU2
PE42750
TU2
PE42750
GN
D
1
RF
1
2
GN
D
3
GND
4
RFC
5
GND
6
C2
10
C1
11
VCC
12
GN
D
7
RF
2
8
GN
D
9
P
13
C913 1nF C913 1nF
R905 0R R905 0R
TC61
2.2uF
TC61
2.2uF
L909
FB(1000ohm,200mA)
L909
FB(1000ohm,200mA)
J3
22*16MM
屏蔽罩
J3
22*16MM
屏蔽罩
1
2
3
4
R909 0R R909 0R
C805
0.1uF C805
0.1uF
C943
2.2nF C943
2.2nF
Y001
16.000MHz
Y001
16.000MHz
C912
0.1uF C912
0.1uF
R917 0R R917 0R
C937 1nF C937 1nF
C920 0.1uF C920 0.1uF
C942 0.1uF C942 0.1uF
C947
NC/47pF C947
NC/47pF
C915
NC/47pF C915
NC/47pF
TC23 10NF/1KV TC23 10NF/1KV
TC51
1nF TC51
1nF
C907
0.1uF C907
0.1uF
C946
NC/10pF C946
NC/10pF
TC52 180pF TC52 180pF
C917
0.1uF
C917
0.1uF
R908 0R R908 0R
R911 100R R911 100R
U905
MxL661
U905
MxL661
VDD_3p3_1
1
LNA_INP
2
LNA_INN
3
VDD_1p8_1
4
AGC_2/GPO3
5
AGC_1
6
IF
_O
UT
N_1
9
IF_OUTP
_1
10
IF
_O
UT
N_2/G
P
O
_1
7
IF
_O
UT
P
_2/G
P
O
_2
8
V
DD_3p3_2
11
V
DD_1p8_2
12
VDD_1p2
13
GND_DIG
14
VDD_IO
15
SCL
16
SDA
17
CLK_OUT
18
XT
AL
_N
19
XT
AL
_P
20
G
N
D
_XT
AL
21
V
DD_1p8_3
22
R
ESET
_N
23
AS
24
GN
D
25
GN
D
26
GN
D
27
GN
D
28
GN
D
29
GN
D
30
GN
D
31
GN
D
32
GN
D
33
L911
560nH
L911
560nH
C932
0.47uF
C932
0.47uF
C919
NC/10pF C919
NC/10pF
C927
0.1uF
C927
0.1uF
C905
33pF C905
33pF
C923
0.1uF
C923
0.1uF
TC25 4.7NF/1KV TC25 4.7NF/1KV
L905
18nH/nc
L905
18nH/nc
C930
0.1uF
C930
0.1uF
L903
18nH/nc L903
18nH/nc
R913 33R R913 33R
TC56
10uF/6.3V
TC56
10uF/6.3V
TC24 10NF/1KV TC24 10NF/1KV
TR17 100R TR17 100R
L901 0R L901 0R
R918 0R R918 0R
C926
0.1uF
C926
0.1uF
C941
0.47uF
C941
0.47uF
TU4 AS1084-3.3V TU4 AS1084-3.3V
VIN
3
GN
D
1
VOUT
2
VOUT
4
C933
NC/0.1uF
C933
NC/0.1uF
Y2
16.000MHz
Y2
16.000MHz
TR19
300K TR19
300K
R915 33R R915 33R
F C onn
90
JT1
F C onn
90
JT1
5
2
7 4 8 6 3
1
9
10
R914 100R R914 100R
L912
560nH
L912
560nH
C914
0.1uF
C914
0.1uF
C936
33pF C936
33pF
C944
0.1uF C944
0.1uF
C910
10nF
C910
10nF
L902 0R L902 0R
C938
0.1uF
C938
0.1uF
R904 0R R904 0R
TC27 470PF/1KV TC27 470PF/1KV
T901
BW21S7511A01TF
T901
BW21S7511A01TF
1
2
4
3
C948
NC/47pF
C948
NC/47pF
TC62
0.1uF TC62
0.1uF
TC50
0.1uF TC50
0.1uF
C909
2.2nF C909
2.2nF
TC53 180pF TC53 180pF
R912 33R R912 33R
C924
1uF
C924
1uF
R906 0R R906 0R
TD4
BAV99 TD4
BAV99
3
1 2
L913
560nH L913
560nH
C935 NC/0.1uF C935 NC/0.1uF
55