LG 50LN54 Series Service Manual page 32

NETCAST4.0 EU&CHUNA_TUNER_BLOCK
TU2603
TDSS-G501D
TUNER_T/C_H/NIM
NC
1
RESET
2
SCL
3
SDA
4
3.3V
5
ALIF_[N]
6
1.8V
7 TUNER_CHINA_F/NIM
ALIF_[P]
8
IF_AGC
9
DLIF_[P]
10
DLIF[N]
11
B1 A1
B1 A1
12
SHIELD
RF_S/W_CTL
50
RESET
51
SCL
52
SDA
53
+B1[3.3V]
54
SIF
55
+B2[1.8V]
56
B1
B1
GND seperation for CHINA tuner
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TU2602
TDSQ-G601D
TUNER_T2/C/S2_F/NIM
NC_1
1
RESET
2
SCL
3
TU2604
SDA
TDSM-C601D
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBS CVBS
8 8
NC_1 NC_2
9 9
NC_2 NC_3
10 10
NC_3 NC_4
11 11
+B3[3.3V] NC_5
12 12
+B4[1.23V] NC_6
13 13
DEMOD_RESET NC_7
14 14
GND GND_1
15 15
NC_4 ERROR
16 16
SYNC SYNC
17 17
VALID VALID
18
18
MCLK MCLK
19 19
D0 D0
20 20
D1 D1
21 21
D2 D2
22 22
D3 D3
23 23
D4 D4
24 24
D5 D5
25 25
D6 D6
26 26
D7 D7
27 27
GND_2
28
A1 GND_3
A1 29
B2 59 A2 +B3[1.23V]
30
S2/T2_RESET
31
+B4[3.3V]
32
S2_F22_OUTPUT
33
S2/T2_SCL
34
S2/T2_SDA
35
LNB
36
GND_4
37
B1 A1
B1 A1
38
SHIELD
RF_SW_OPT
R2603
0
RF_SWITCH_CTL
Close to TUNER
C2603
0.1uF
TU2601
16V
RF_SW_OPT
TDSQ-G501D
R2611
100
TU_I2C_FILTER
R2609-*1
MLG1005SR27JT
+3.3V_TU
TUNER_T/C/S2_F/NIM
NC_1
TU_I2C_FILTER
1 R2610-*1
MLG1005SR27JT
RESET
R2615
2
TU_I2C_NON_FILTER
SCL
R2609 33
3
SDA TU_I2C_NON_FILTER
4 R2610 33
C2607 C2612
+B1[3.3V] 20pF 20pF
5 50V 50V
NC_2
6
+1.8V_TU
+B2[1.8V]
7
C2602 C2604
NC_3
100pF 0.1uF
8
50V 16V
T/C_IF_AGC
9
H_NIM/NON_T2
T/C_DIF[P]
10 C2600
0.1uF
NON_T2_C_S2/CHINA
T/C_DIF[N] R2602
16V
11 10
NC_4
12
NON_T2_C_S2/CHINA
NC_5
R2601
13
10
NC_6
14
GND_1
15
ERROR
16
SYNC
17
VALID
AR2601
18
MCLK
19
D0
20
CHINA
D1
21
D2
AR2602
22
D3
23
D4
24
CHINA
D5
25
AR2603
D6
26
D7
27
GND_2
CHINA
28
GND_3
29
+B3[1.23V] BLM18PG121SN1D
30
DVB_S DVB_S
S2_RESET C2608 C2611
31 100pF
0.1uF
50V 16V
+B4[3.3V]
32
DVB_S
R2600
S2_F22_OUTPUT
51
33
LNB_TX
S2_SCL
34
S2_SDA
35
LNB
DVB_S
36
R2605 22
GND_4
DVB_S
37
R2604 22
B1 A1
B1 A1
38
SHIELD
+3.3V_TU
R2614
100K
TUNER_RESET
C2622
0.1uF
16V
R2620
1K 1K
TU_SCL
+3.3V_TU
TU_SDA
C2651 C2652
20pF 20pF
close to TUNER
50V 50V
C2621 C2623
100pF 0.1uF
C2626
50V 16V
0.1uF
16V
IF_AGC_MAIN
R2635 R2637
680 680
R2636
R2608 OPT OPT
should be guarded by ground
2K
0
OPT
+3.3V_TU_CHINA
CHINA
R2606
0
CHINA CHINA CHINA
C2614 C2617 C2618
100pF 0.1uF 10uF +1.23V_TU
50V 16V 6.3V CHINA
L2601
BLM18PG121SN1D
CHINA CHINA
C2616 C2620
0.1uF 0.1uF
16V 16V
47
FE_TS_ERR
FE_TS_SYNC
FE_TS_VAL
FE_TS_CLK
Close to the tuner
FE_TS_DATA[0-7]
47
FE_TS_DATA[0]
AR2601-*1
FE_TS_DATA[1]
0
+3.3V_TU
1/16W
FE_TS_DATA[2]
FE_TS_DATA[3]
DVB_S
47
AR2602-*1
FE_TS_DATA[4]
0
FE_TS_DATA[5] 1/16W
FE_TS_DATA[6]
FE_TS_DATA[7]
DVB_S
AR2603-*1
0
+1.23V_TU
DVB_S
1/16W
L2600
Vo=VREF*(1+R2/R1)
DVB_S
VREF=1.25V
DVB_S
C2615
10uF
6.3V
F_NIM/CHINA
R2613
S2_RESET
10
F_NIM/CHINA
+3.3V_S2_DE
C2619
0.1uF
16V
DVB_S DVB_S
C2624 C2625
100pF 0.1uF C2635
DEMOD_SCL 0.1uF
50V 16V
16V
DEMOD_SDA
LNB_OUT
+3.3V_TU +3.3V_S2_DE
DVB_S
L2602
BLM18PG121SN1D
CAP_10uF_X5R_DVB_S
C2630
C2632
0.1uF
16V 10uF
10V
+3.3V_TU_CHINA
CHINA
L2603
BLM18PG121SN1D
CAP_10uF_X5R_CHINA
C2631
10uF
10V
ERROR & VALID PIN
R2628
FE_TS_VAL
0
FE_TS_VAL_ERR
FE_TS_ERR
GPIO must be added.
R2607 0
OPT
+3.3V_TU +3.3V_TU
R2618
470
R2619
T2_C_S2/CHINA
82
TU_SIF
T2_C_S2/CHINA
R2625
E R2624
220 220
T2_C_S2/CHINA T2_C_S2/CHINA
Q2600
B MMBT3906(NXP)
R2616 T2_C_S2/CHINA
4.7K C
TU_CVBS
T2_C_S2/CHINA
E
Q2601
MMBT3906(NXP)
B
T2_C_S2/CHINA
C
R2612 0
IF_P_MSTAR
OPT
IF_N_MSTAR
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet.
BR_RESET_DEMOD
IC2603 +1.8V_TU
IF_AGC_SEL
AP1117E18G-13
LNA2_CTL
R1
INADJ/GND LNA_CTRL_1
OPT
OUT LNA_CTRL_2
R2648
200
1%
R2632
R2647
1
0
R2
C2641 C2642
C2642-*1
0.1uF 10uF
10uF
16V 10V
10V
CAP_10uF_X5R
CAP_10uF_X7R
CAP_10uF_X7R_FNIM/CHINA
C2647-*1
F_NIM/CHINA
10uF
IC2602 10V
TJ4220GDP-ADJ
[EP]GND
Vo=0.8*(1+R2/R1)
NC_1 GND +1.23V_TU
1 8
F_NIM/CHINA
F_NIM/CHINA
R2633
R2629 R2
12K
3.3K EN2 ADJ/SENSE
1%
2 7
VIN3 VOUT
3 6
NC4 NC_2
CAP_10uF_X5R_FNIM/CHINA
4 5 F_NIM/CHINA F_NIM/CHINA
C2645 C2647
R2634
0.1uF 10uF
22K
16V
1% 10V
R1
+3.3V_TU +3.3V_Normal
L2606
CIS21J121
DVB_S
C2634 CAP_10uF_X7R_DVB_S
C2632-*1
0.1uF
C2648
10uF C2643 C2644 C2646
16V
10V 22uF 0.1uF 22uF 0.1uF
10V 16V 10V 16V
CHINA
CAP_10uF_X7R_CHINA
C2633
C2631-*1
0.1uF
10uF
16V
10V
NC4_S7LRM 2012/06/19
TUNER_EU 26
LGE Internal Use Only