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LG 42LB65 Series - Maintenance; TV Cleaning Procedures; Troubleshooting

LG 42LB65 Series
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THERMAL
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.
FE_DEMOD1_TS_DATA[7]
FE_DEMOD1_TS_DATA[4]
FE_DEMOD1_TS_DATA[0]
FE_DEMOD1_TS_DATA[5]
FE_DEMOD1_TS_DATA[1]
FE_DEMOD1_TS_DATA[3]
FE_DEMOD1_TS_DATA[2]
FE_DEMOD1_TS_DATA[6]
C6517
22uF
10V
85C
R6521-*1
18K
TU_M/W_1.1V
FE_DEMOD1_TS_SYNC
FE_DEMOD2_TS_VAL
FE_DEMOD1_TS_DATA[0-7]
FE_DEMOD2_TS_CLK
+3.3V_TUNER
I2C_SDA4
FE_DEMOD1_TS_DATA[0]
R6517
200
TU_ALL_2178B
C6513
18pF
50V
OPT
FE_DEMOD1_TS_SYNC
IF_N_TU
I2C_SCL6_TU
IF_P
POWER_ON/OFF2_1
R652 1
10K
TU_M/W_1.2V
L6504
BLM18PG121SN1D
Demod_Core
/TU_RESET1
+5V_NORMAL
+3.3V_TUNER
FE_DEMOD1_TS_ERROR
LNB_OUT
FE_DEMOD1_TS_VAL
FE_DEMOD2_TS_SYNC
LNB_TX
R6503
10K
TU_K/M/W_TW/BR/CO/CN
/TU_RESET2
C6511
0.1uF
TU_M/W
LNB_OUT
C6515
1uF
10V
TU_M/W
C6510
0.1uF
TU_M_KR/EU // W_ALL
IC6500
AP2132MP-2.5TRG1
TU_M/W
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
Q6502
MMBT3906(NXP)
TU_ALL_2178B
E
B
C
L6505
BLM18PG121SN1D
TU_M/W
FE_DEMOD1_TS_DATA[7]
FE_DEMOD1_TS_CLK
IF_P_TU
C6504
0.1uF
TU_K/M/W_TW/BR/CO/CN
L6501
BLM18PG121SN1D
TU_M_KR/EU // W_ALL
I2C_SDA6_TU
IF_N
+3.3V_TUNER
C6509
0.1uF
16V
TU_W
FE_DEMOD2_TS_CLK
R6510 33
TU_M/W
R6502
100
TU_W
RF_SWITCH_CTL_TU
I2C_SDA4_TU
+3.3V_DEMOD_TU
FE_DEMOD1_TS_ERROR
FE_DEMOD1_TS_DATA[2]
R6509 33
TU_M/W
FE_DEMOD1_TS_DATA[4]
I2C_SDA6
FE_DEMOD1_TS_CLK
D_Demod_Core
R6505
10
TU_ALL_IntDemod
FE_DEMOD2_TS_ERROR
I2C_SCL4
TU_CVBS_TU
FE_DEMOD1_TS_DATA[1]
FE_DEMOD2_TS_VAL
IF_AGC
R651 9
10.5 K
TU_M/W_1.2V
C6512
18pF
50V
OPT
C6506
0.1uF
TU_M/W
0.1uF
C6516
TU_M/W
Demod_Core
C6501
0.1uF
+3.3V_LNA_TU
/TU_RESET2
FE_DEMOD2_TS_DATA
+3.3V_TU
/TU_RESET2_TU
R6504
10
TU_ALL_IntDemod
I2C_SCL4_TU
TU_SIF_TU
TUNER_SIF
FE_DEMOD1_TS_VAL
FE_DEMOD1_TS_DATA[3]
/TU_RESET1_TU
FE_DEMOD2_TS_ERROR
R6501
100
TU_M/W
+3.3V_NORMAL
C6518
10uF
10V
TU_M/W
R6500
10K
TU_M/W
FE_DEMOD1_TS_DATA[5]
IF_AGC_TU
TU_CVBS
RF_SWITCH_CTL
R6507
1K
TU_K/M/W_TW/BR/CO/CN
R6519-*1
16K
TU_M/W_1.1V
FE_DEMOD1_TS_ERROR
L6503
BLM18PG121SN1D
TU_M/W
C6500
10uF
10V
TU_M/W
+3.3V_TUNER
FE_DEMOD1_TS_DATA[6]
LNB_TX
L6500
BLM18PG121SN1D
/TU_RESET2_TU
C6507
0.1uF
16V
TU_M/W
FE_DEMOD2_TS_DATA
R6513 0
TU_ALL_2178B
C6502
0.1uF
16V
TU_ALL_IntDemod
FE_DEMOD2_TS_SYNC
+3.5V_ST
R6516
200
TU_ALL_2178B
I2C_SCL6
+3.3V_TUNER
R6506
1K
TU_ALL_IntDemod
C6519
33pF
TU_H/M_EU/BR/TW/CO
C6503
47pF
50V
OPT
C6505
47pF
50V
OPT
C6520
33pF
TU_H/M_EU/BR/TW/CO
AR6500
33
1/16W
Non_TU_W_CO
AR6500-*1
200
1/16W
TU_W_CO/TW
65
TUNER
2012.07.10
25
6
16
45
28
12
40
close to Tuner
4
34
39
Signal to Signal Width = 12mils
37
2A
Ground Width >= 24mils
23
close to Tuner
22
else : Max 0.7A
11
29
14
1. should be guarded by ground
3. Signal Width >= 12mils
close to Tuner
18
T2 : Max 1.7A
1
R2
7
Vout=0.6*(1+R1/R2)
38
31
15
24
2
3
26
2. No via on both of them
5
close to TUNER
27
19
21
9
should be guarded by ground,Match GND VIA
36
R1
1608 perallel
because of derating
10
30
17
8
20
14’ Tuner Type for Global
TDJ’H’-G101D : Half NIM for EU,AJJA
TDJ’H’-H101F : Half NIM for US, KR
TDJ’K’-T101F : Half NIM for TW
TDJ’M’-C301D,F : FULL NIM for China
TDJ’M’-B101F : Brazil NIM with Isolater Type
TDJ’M’-K101F : colombia NIM
TDJ’M’-G101D,G105D,G151D : EU Combo&Full NIM
TDJ’M’-H101F,H151F : Korea PIP tuner
TDJ’W’-A151D : AJJA T2 PIP
Global F/E Option Name
1. TU
2. Tuner Name = TDJ’H’,TDj’M’...
3. Country Name = KR,US,BR,EU ...
Example of Option name
TU_ALL_IntDemod = All Tuner type for Internal demod
TU_M/W = apply TDSM&TDSW Type Tuner
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

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