LG 28LN45 Series Service Manual page 31

NETCAST4.0 EU&CHUNA_TUNER_BLOCK
(OPT)TUNER_T/C_H/NIM
TU2603
TDSS-G501D(B)
NC_1
1
RESET
2
SCL
3
SDA
4
3.3V
5
NC_2
6
1.8V
7
NC_3
8
IF_AGC
9
DLIF_[P]
10
DLIF_[N]
11
B1 A1
B1 A1
12
SHIELD
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
TU2601
TU2602
TDSQ-G601D(B) TDSQ-G501D(B)
TUNER_T2/C/S2_F/NIM
TUNER_T/C/S2_F/NIM
NC_1 NC_1
1 1
RESET RESET
2 2
SCL SCL
3 3
SDA SDA
4 4
+B1[3.3V] +B1[3.3V]
5 5
SIF NC_2
6 6
+B2[1.8V] +B2[1.8V]
7 7
CVBS NC_3
8 8
NC_2 IF_AGC
9 9
NC_3 DIF[P]
10 10
NC_4 DIF[N]
11 11
NC_5 NC_4
12 12
NC_6 NC_5
13 13
NC_7 NC_6
14 14
GND_1 GND_1
15 15
ERROR 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 GND_2
28 28
GND_3 GND_3
29 29
+B3[1.23V] +B3[1.23V]
30 30
DEMOD_RESET DEMOD_RESET
31 31
+B4[3.3V] +B4[3.3V]
32 32
F22_OUTPUT F22_OUTPUT
33 33
DEMOD_SCL DEMOD_SCL
34 34
DEMOD_SDA DEMOD_SDA
35 35
LNB LNB
36 36
GND_4 GND_4
37 37
B1 A1 B1 A1
B1 A1 B1 A1
38 38
SHIELD SHIELD
OPT
R2603
0
RF_SWITCH_CTL
+3.3V_TU
Close to TUNER
C2603
0.1uF
16V
OPT
R2614
100K
R2611
12.08.14
100
diagonal noise improve
TUNER_RESET
OPT
C2629
C2622
0.1uF
0.1uF
16V (OPT)TU_I2C_FILTER
16V
R2609-*1
MLG1005SR27JT
+3.3V_TU
(OPT)TU_I2C_FILTER
R2610-*1
MLG1005SR27JT
R2615 R2620
1K 1K
TU_I2C_NON_FILTER
R2609 33
TU_SCL
TU_I2C_NON_FILTER +3.3V_TU
R2610 33
TU_SDA
C2607 C2612
C2651 C2652
20pF 20pF
20pF 20pF
50V 50V
50V 50V
C2628
C2621 C2623
100pF 0.1uF 100uF
50V 16V 16V
OPT
+1.8V_TUNER
C2602 C2604
C2627
100pF 0.1uF 100uF
50V 16V 16V
OPT
IF_AGC_MAIN
T/C/S2
R2608
C2600 should be guarded by ground
0
0.1uF T/C/S2
16V R2602
10
T/C/S2
+3.3V_TU_CHINA
OPT
R2601
R2606
10
0
OPT OPT OPT
C2614 C2617 C2618 C2649
100pF 0.1uF 10uF 100uF +1.23V_TUNER
50V 16V 6.3V 16V
OPT
OPT
L2601
BLM18PG121SN1D
OPT OPT
C2650
C2616 C2620
100uF
0.1uF 0.1uF
16V
16V 16V
OPT
AR2601 0
FE_TS_ERR
FE_TS_SYNC
FE_TS_VAL
FE_TS_CLK
FE_TS_DATA[0-7]
AR2602 0
FE_TS_DATA[0]
FE_TS_DATA[1]
FE_TS_DATA[2]
FE_TS_DATA[3]
AR2603 0
FE_TS_DATA[4]
FE_TS_DATA[5]
FE_TS_DATA[6]
FE_TS_DATA[7]
+1.23V_TUNER
L2600
BLM18PG121SN1D
C2608
C2611 C2615
100pF 0.1uF 10uF
50V 16V 6.3V
R2600
51
R2613
LNB_TX 10 S2_RESET
+3.3V_S2_DE
C2619
0.1uF
16V
C2624 C2625
R2605 22 100pF 0.1uF
DEMOD_SCL
50V 16V
R2604 22
DEMOD_SDA
LNB_OUT
+3.3V_TU
BLM18PG121SN1D
C2630
0.1uF
16V
BLM18PG121SN1D
ERROR & VALID PIN
FE_TS_VAL
FE_TS_ERR
GPIO must be added.
DEMOD_RESET
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet.
R2607 0
OPT
+3.3V_TU +3.3V_TU
R2618
470
T2/C/S2 R2619
82
close to TUNER TU_SIF
T2/C/S2
R2624
E
220
C2626
T2/C/S2
Q2600
B MMBT3906(NXP)
0.1uF
R2616 T2/C/S2
16V
T2/C/S2 4.7K C
T2/C/S2 E
Q2601
MMBT3906(NXP)
B
C
R2635 R2637
680 680
OPT R2636 OPT
2K
OPT
R2612 0
IF_P_MSTAR
OPT
IF_N_MSTAR
+3.3V_S2_DE
+3.3V_TU
121118
SS BEAD->SUNLORD BEAD
L2602
UBW2012-121F
C2632 C2634
C2643
C2644
10uF 0.1uF
22uF 0.1uF
10V 16V
10V 16V
+3.3V_TU_CHINA
OPT
L2603
OPT OPT
C2631 C2633
10uF 0.1uF
10V 16V
EAX65303801
NC4_S7LRM
TUNER_EU
R2628
0
FE_TS_VAL_ERR
R2625
220
T2/C/S2
TU_CVBS
T2/C/S2
+3.3V_TUNER
L2606
C2646 C2648
22uF 0.1uF
10V 16V
2013.1.14
26 13
LGE Internal Use Only