LG 55EC9300 Repair Manual page 37

+2.5V_NORMAL
L6502
BLM18PG121SN1D
+2.5V_DEMOD
C6508
0.1uF
DVB-T GND
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TU_TDJW-B251F
TU6700
TDJW-B251F
B1[+3.3V]
1
RF_S/W_CTL
2
NC_1
3
SCL_RF
4
SDA_RF
5
NC_2
6
NC_3
7
M_SIF
8
M_CVBS
9
NC_4
10
B2[+3.3V]
11
NC_5
12
GND_1
13
M_RESET_DEMOD
25
B3[+3.3V]
26
SCL_DEMOD
27
B4[+1.1V]
28
NC_6
29
SDA_DEMOD
30
NC_7
33
M_ERROR
34
FE_DEMOD2_TS_ERROR
GND_2
35
M_SYNC
36
FE_DEMOD2_TS_SYNC
M_MCLK
37
FE_DEMOD2_TS_CLK
NC_8
38
+2.5V_DEMOD
M_VALID
39
FE_DEMOD2_TS_VAL
M_DATA
40
FE_DEMOD2_TS_DATA
S_ERROR
41
FE_DEMOD1_TS_ERROR
S_SYNC
42
FE_DEMOD1_TS_SYNC
TU_W
S_MCLK
R6804
0
43
FE_DEMOD1_TS_CLK
S_VALID
44
FE_DEMOD1_TS_VAL
S_RESET_DEMOD
45
/TU_RESET2_TU
TU_W
S_DATA
R6805
0
46
FE_DEMOD1_TS_DATA[0]
A1 B1
A1 B1
47
SHIELD
ATSC_TDJM_H151F
DVB_TDJM_G251D
TU6707
TDJM-G251D
B1[+3.3V]
1
NC_1
2
NC_2
3
SCL_RF
4
SDA_RF
5
NC_3
6
NC_4
7
SIF
8
CVBS
9
NC_5
10
B2[+3.3V]
11
ERROR
12
GND_1
13
MCLK
14
SYNC
15
VAILD
16
D0
17
D1
18
D2
19
D3
20
D4
21
D5
22
D6
23
D7
24
RESET_DEMOD
25
B3[+3.3V]
26
SCL_DEMOD
27
B4[+1.1V]
28
F22_OUTPUT
29
SDA_DEMOD
30
LNB
31
GND_2 A1
32 A1
47
A1 B1
A1 B1
47
SHIELD
TU6701
TDJM-H151F
B1[+3.3V]
1
NC_1
2
M_DIF_AGC
3
SCL_RF
4
SDA_RF
5
M_DIF[P]
6
M_DIF[N]
7
S_SIF
8
S_CVBS
9
NC_2
10
+3.3V_TU
B2[+3.3V] A1
11
+3.3V_TU
S_ERROR
12
FE_DEMOD1_TS_ERROR
GND_1
13
TU_M
S_MCLK R6802
0
14
FE_DEMOD1_TS_CLK
S_SYNC
15
FE_DEMOD1_TS_SYNC
S_VAILD
16
FE_DEMOD1_TS_VAL
TU_M
S_DATA
R6803
0
17
FE_DEMOD1_TS_DATA[0]
NC_3
18
FE_DEMOD1_TS_DATA[1]
NC_4
19
FE_DEMOD1_TS_DATA[2]
NC_5
20
FE_DEMOD1_TS_DATA[3]
NC_6
21
FE_DEMOD1_TS_DATA[4]
NC_7
22
FE_DEMOD1_TS_DATA[5]
NC_8
23
FE_DEMOD1_TS_DATA[6]
NC_9
24
FE_DEMOD1_TS_DATA[7]
S_RESET_DEMOD
25
/TU_RESET1_TU
B3[+3.3V]
26
+3.3V_DEMOD_TU
SCL_DEMOD
27
I2C_SCL4_TU
B4[+1.1V]
28
D_Demod_Core
NC_10
29
LNB_TX
SDA_DEMOD
30
I2C_SDA4_TU
LNB_OUT
B1
B1
SHIELD
ATSC_TDJH_H251F
TU6703
TDJH-H251F
B1[+3.3V]
1
+3.3V_LNA_TU
NC
2
RF_SWITCH_CTL_TU
DIF_AGC
3
IF_AGC_TU
SCL
4
I2C_SCL6_TU
SDA
5
I2C_SDA6_TU
DIF[P]
6
IF_P_TU
DIF[N]
7
IF_N_TU
SIF
8
TU_SIF_TU
CVBS
9
TU_CVBS_TU
B1
A1 B1
47
SHIELD
DVB_TDJM-G255D DVB_TDJM-C351D
TU_TDJW_152F
TU6701-*2
TU6701-*1
TDJM-C351D
TU6700-*1 TDJM-G255D
TDJW-K152F
B1[+3.3V]
B1[+3.3V] B1[+3.3V]
1 1
1
SWITCH_CTR RF_SW_CTL
2 NC_1
2
NC_1 2
3
NC_1
SCL_RF NC_2
4 3
3
SDA_RF SCL_RF
5 SCL_RF
4
NC_2 4
6
SDA_RF
NC_3 SDA_RF
7 5
5
S_SIF NC_2
8 NC_3
6
S_CVBS 6
9
NC_3
NC_4 NC_4
10 7
7
B2[+3.3V] SIF
11 SIF
8
NC_5 8
12
CVBS
GND_1 CVBS
13 9
9
NC_4
NC_5
10
10
NC_5
B2[+3.3V]
11
11
ERROR
ERROR
12
12
GND_1
GND_1
13
13
MCLK
MCLK 14
14
SYNC
SYNC 15
15
VAILD
VAILD 16
16
D0
M_RESET_DEMOD
D0 17
25 17
B3[+3.3V] D1
26
D1 18
SCL_DEMOD 18
27
D2
B4[+1.2V]
D2 19
28 19
NC_6
29 D3
D3 20
SDA_DEMOD 20
30
D4
D4 21
21
D5
D5 22
NC_7 22
33
D6
M_ERROR D6 23
34 23
GND_2
35 D7
D7 24
M_SYNC 24
36
RESET_DEMOD
M_MCLK RESET_DEMOD 25
37 25
NC_8
38 B2[+3.3V]
B3[+3.3V] 26
M_VALID 26
39
SCL_DEMOD
M_DATA SCL_DEMOD 27
40 27
S_ERROR
41 B3[+1.1V]
B4[+1.2V] 28
S_SYNC 28
42
NC_6
S_MCLK F22_OUTPUT 29
43 29
S_VALID
44 SDA_DEMOD
SDA_DEMOD 30
S_RESET_DEMOD 30
45
S_DATA
46
A1 B1
A1 B1 A1 B1
A1 B1 A1 B1
A1 B1
47
47 47
SHIELD
SHIELD
SHIELD
TU_SYMBOL 2012.09.14
LGE Internal Use Only