LG 42LX6500-UB (CHASSIS:LA02R) Service Manual ▷ View online
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.
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.
GAS12
GAS1
DEV
GAS2
GAS3
GAS7
GAS5
GAS9
GAS10
GAS6
GAS8
GAS4
GAS11
GAS10-*1
GAS7-*1
GAS8-*1
GAS11-*1
GAS6-*1
GAS4-*1
GAS3-*1
GAS2-*1
GAS1-*1
DEV
GAS12-*1
GAS9-*1
GAS5-*1
MDS61887710
GAS7-*3
MDS61887710
GAS1-*3
MDS61887710
GAS5-*3
MDS61887708
GAS3-*2
MDS61887710
GAS12-*3
MDS61887708
GAS5-*2
MDS61887710
GAS3-*3
MDS61887708
GAS11-*2
MDS61887710
GAS10-*3
MDS61887708
GAS6-*2
MDS61887708
GAS2-*2
MDS61887710
GAS8-*3
MDS61887708
GAS8-*2
MDS61887708
GAS12-*2
MDS61887710
GAS6-*3
MDS61887710
GAS4-*3
MDS61887708
GAS10-*2
MDS61887708
GAS9-*2
MDS61887710
GAS11-*3
MDS61887710
GAS2-*3
MDS61887708
GAS7-*2
MDS61887708
GAS1-*2
MDS61887708
GAS4-*2
MDS61887710
GAS9-*3
MDS62110206
GAS11-*4
MDS62110206
GAS7-*4
MDS62110206
GAS2-*4
MDS62110206
GAS8-*4
MDS62110206
GAS10-*4
MDS62110206
GAS1-*4
MDS62110206
GAS4-*4
MDS62110206
GAS5-*4
MDS62110206
GAS9-*4
MDS62110206
GAS3-*4
MDS62110206
GAS6-*4
MDS62110206
GAS12-*4
G A S K E T o n t h e B o t t o m
SMD GASKET FOR EMI (8*6*5.5 FOR LE5400/5500/7500)
GAS1
GAS3
GAS4
GAS5
GAS6
GAS7
GAS8
GAS9
GAS10
GAS11
GAS12
EAX61538101
D r a w b o t t o m l o c a t i o n w h e n m a k e a n e w p c b
GAS2
GAS5
EAX61746401
GAS4
GAS9
GAS12
GAS2
GAS7
GAS10
GAS11
GAS1
GAS3
GAS8
GAS6
SMD GASKET FOR EMI (8*6*7.5 FOR LE8500)
G A S K E T o n t h e B o t t o m
GASKET_9.5T
GASKET_12.5T
SMD GASKET FOR EMI (8*6*12.5T)
SMD GASKET FOR EMI (8*6* 9.5T)
GASKET_6.5T
SMD GASKET FOR EMI (8*6*6.5 FOR 32LE7500)
0 9 / 1 0 / x x
SMD_GASKET
GP2_BCM_ATSC
5 1 0 0
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.
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.
47pF
50V
50V
C720
4.7K
R728
+5V_TU
3.3K
R722
TU_CVBS
011:C4
+3.3V_TU
M_IF_N
011:D2
22uF
16V
16V
C704
100K
R704
OPT
0 . 1 u F
16V
C719
OPT
IF_AGC_CHB
015:A2
IF_P_CHB
015:A3
0 . 1 u F
16V
C716
CVBS_CHB
0 1 5 : B 5 ; 0 0 7 : A I 7
0 . 1 u F
16V
C708
100pF
50V
50V
C703
3.3K
R723
0 . 1 u F
16V
C707
22uF
16V
16V
OPT
C702
+5V_TU
SCL0_3.3V
SCL0_3.3V
TU_SIF
011:C5
TUNER_SUB_RESET
009:G5
SDA0_3.3V
+5V_TU
SDA0_3.3V
+3.3V_NORMAL
100
R705
CHB
ISA1530AC1
Q701
E
B
C
100K
R711
OPT
0 . 1 u F
16V
C713
CHB
0 . 1 u F
16V
16V
C715
OPT
1K
OPT
R730
0
R708
M_IF_AGC
011:D1
3.3K
R713
CHB
+3.3V_TU
100
R719
+3.3V_TU
47pF
50V
50V
C714
CHB
0 . 1 u F
16V
C712
1K
OPT
R726
1K
OPT
R727
+32V_TU
0
R725
TU_CVBS_TR
+3.3V_TU
100 R720
ISA1530AC1
Q702
TU_CVBS_TR
E
B
C
0 . 1 u F
16V
C709
100 R706
CHB
TUNER_MAIN_RESET
009:G4
100
R703
CHB
+5V_TU
M_IF_P
011:D2
ISA1530AC1
Q700
CHB
E
B
C
+3.3V_TU
0
R724
CHB
+1.26V_TU
BLM18PG121SN1D
L701
47pF
50V
50V
C710
CHB
1K
OPT
R729
0 . 1 u F
16V
16V
C711
100
R707
100pF
50V
50V
C700
CHB
+5V_TU
BLM18PG121SN1D
L700
0
R709
IF_N_CHB
015:A3
47pF
50V
50V
C721
100pF
50V
C725
22uF
16V
16V
C705
22uF
16V
16V
OPT
C701
3.3K
R712
CHB
+3.3V_TU
0 . 1 u F
16V
C706
CHB
+5V_TU
0
NON_CHB
R714
0 CHB
R701
0
NON_CHB
R734
CVBS_CHB
+1.8V_TU
2 . 2 u F
16V
C718
500
L702
2 . 2 u F
16V
C717
0 . 1 u F
50V
50V
C724
+1.26V_TU
+3.3V_TU
AP1117EG-13
IC700
ADJ/GND
OUT
IN
BLM18PG121SN1D
L703
1
R721
120
R718
0
R710
0
CHB
R717
200
R735
CHB
200
R731
CHB
470
R732
82
R737
+5V_NORMAL
TDVJ-H031F
TUNER_NON_CHB_V
TU700
DEV
14
3.3V
13
1.2V
5
N.C
12
GND
11
CVBS
2
N.C
10
N.C
4
N.C
1
N.C
17
IF_N
9
S I F
8
N.C
3
+5V
16
IF_AGC
7
SDA
6
SCL
15
RESET
18
I F _ P
SHIELD
19
TDVJ-H001F
TU700-*1
TUNER_NON_CHB_H
DEV
14
3.3V
13
1.2V
5
AS
12
GND
11
VIDEO
2
BST_CNTL
10
NC
4
NC[RF_AGC]
1
ANT_PWR[OPT]
17
DIF_1
9
S I F
8
NC(IF_TP)
3
+B
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
SHIELD
19
TDTD-V035F
TU701-*1
TUNER_CHB_H
DEV
14
CVBS[MAIN]
13
S I F
5
DIF_2[SUB]
12
+B3[32V]
11
+B2[5V]
2
SCL[SUB]
19
IF_AGC[MAIN]
18
RESET[MAIN]
10
SDA[MAIN]
4
RESET[SUB]
1
+ B 1 [ 1 . 8 V ]
17
+B5[3.3V][MAIN]
9
SCL[MAIN]
8
CVBS[SUB]
3
SDA[SUB]
16
+B4[1.2V][MAIN]
7
IF_AGC[SUB]
6
DIF_1[SUB]
15
GND
22
SHIELD
20
DIF_1[MAIN]
21
DIF_2[MAIN]
TDTD-V055F
TUNER_CHB_V
TU701
DEV
14
CVBS[MAIN]
13
S I F
5
IF_N[SUB]
12
32V
11
5V
2
SCL[SUB]
19
IF_AGC[MAIN]
18
RESET[MAIN]
10
SDA[MAIN]
4
RESET[SUB]
1
1.8V
17
3.3V[MAIN]
9
SCL[MAIN]
8
CVBS[SUB]
3
SDA[SUB]
16
1.2V[MAIN]
7
IF_AGC[SUB]
6
IF_P[SUB]
15
GND
22
SHIELD
20
IF_N[MAIN]
21
IF_P[MAIN]
+5V_TU
200
OPT
OPT
R739
CVBS_CHB_SEARCH
0 1 1 : C 4 ; 0 0 7 : A I 6
200
OPT
R738
ISA1530AC1
OPT
Q703
E
B
C
CVBS_CHB_SEARCH
0
NON_CHB
R740
220
R733
TU_CVBS_TR
220
R736
TU_CVBS_TR
0
R702
0
R741
TU_CVBS_BYPASS
10pF
50V
50V
CHB
C726
10pF
50V
50V
CHB
C727
300
CHB
R716
300
CHB
R715
22uF
C722
22uF
16V
C723
TDTD-V056F
TU701-*2
14
CVBS[MAIN]
13
S I F
5
DIF_2[SUB]
12
+B3[32V]
11
+B2[5V]
2
SCL[SUB]
19
IF_AGC[MAIN]
18
RESET[MAIN]
10
SDA[MAIN]
4
RESET[SUB]
1
+ B 1 [ 1 . 8 V ]
17
+B5[3.3V][MAIN]
9
SCL[MAIN]
8
CVBS[SUB]
3
SDA[SUB]
16
+B4[1.2V][MAIN]
7
IF_AGC[SUB]
6
DIF_1[SUB]
15
GND
22
SHIELD
20
DIF_1[MAIN]
21
DIF_2[MAIN]
0
LE5500 EXCEPT DTV Measure
R743
0
LE5500 EXCEPT DTV Measure
R742
200mA
ATSC TUNER
60mA
CHB OPTION
CHB OPTION
NON CHB OPTION
R1
R2
VOUT = VREF *(1+R2/R1)
V e r t i c a l
H o r i z o n
TUNER TYPE
LE5500 EXCEPT DTV Measure OPTION
0 9 / 1 0 / x x
ATSC_TUNER
7 1 0 0
GP2_BCM_ATSC
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