Read LG 42SL90-UA (CHASSIS:LA92S) Service Manual 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.
TUNER
5 10
SL90
09/08/24
TS_DATA[2]
TS_DATA[1]
TS_DATA[7]
TS_DATA[5]
TS_DATA[6]
TS_DATA[0-7]
@netLa
TS_DATA[3]
TS_DATA[4]
TS_DATA[0]
R516
4.7K
4.7K
TU500-*1
UCA36AL
Tuner-Sanyo
14
IF_AGC
13
D_IF2
5
NC_3[RF_AGC]
12
D_IF1
11
NC_5
2
NC_2
19
VIDEO
18
NC_7
10
AS
4
+5V[MAIN]
1
NC_1
17
NC_6[AFT]
9
SCL
8
SDA
3
GND_1
16
SIF
7
GND_2
6
NC_4[VT]
15
+5V[VIF]
20
SHIELD
C531
0.1uF
50V
0.1uF
50V
C551
0.1uF
50V
0.1uF
50V
C550
100uF
100uF
16V
+5V_TU
C535
0.1uF
50V
+5V_EXT
C552
1uF
10V
10V
C528
36pF
50V
OPT
R546 OPT
C512
0.047uF
50V
OPT
L509
MLB-201209-0120P-N2
R523-*1
0
IF_Short
VSB_RESET
R501
0
0
C500
0.1uF
16V
R548
22
R528
100
+1.2V_DVDD_PVSB
JP500
C539
0.1uF
50V
0.1uF
50V
C525
0.1uF
50V
IF_P
C504
0.01uF
25V
L511
500
OPT
+3.3V_AVDD_PVSB
C534
10uF
16V
16V
3216
+12V
C555
100uF
100uF
16V
R549
20K
R541
100
OPT
AR500
100
1/16W
100
1/16W
R532 OPT
IF_AGC
C502
0.1uF
16V
C538
0.1uF
R512
4.7K
4.7K
C540
0.1uF
50V
R502
100
100
OPT
+3.3V_AVDD_PVSB
R506
22
R539
1M
C548
27pF
50V
27pF
50V
C520
27pF
27pF
50V
OPT
+3.3V_AVDD_PVSB
C521
0.1uF
0.1uF
C544
0.1uF
50V
0.1uF
50V
C507
100pF
100pF
50V
C553
OPT
C543
0.1uF
50V
IC504
SC156515M-1.8TR
2
VIN
1
EN
3
GND
5
ADJ
4
VO
R545
OPT
R534
5.1K
OPT
C546
27pF
50V
JP502
C524
0.01uF
25V
0.01uF
25V
IC500
AS7809DTRE1
2
GND
3
OUTPUT
1
INPUT
R533 OPT
C532
10uF
16V
3216
C542
0.01uF
C537
0.1uF
50V
0.1uF
50V
R527
100
C519
47uF
16V
16V
TS_CLK
+3.3V_PVSB
+1.2V_PVSB
R538
20K
20K
R540
4.7K
R535
470
PV
C508
0.1uF
50V
R524
220nH
IF_LC_Filter
+3.3V_DVDD_PVSB
Q501
ISA1530AC1
E
B
C
L510
CB3216PA501E
TS_VALID
R510
0
0
OPT
+5V_TU
FE_DEMOD_SCL
+3.3V_PVSB
IC502
LGDT3305
1
NC_1
2
VINA2
3
VINA1
4
INCAP
5
VSSAAD10A
6
I2CSEL
7
ANTCON
8
VDD_1
9
I2CRPT_SCL
10
I2CRPT_SDA
11
IFOUT
12
RFOUT
13
TPERR
14
VDD33_1
15
TPVALID
16
TPDATA[0]
17
VSS33_1
18
TPDATA[1]
19
TPDATA[2]
20
TPDATA[3]
21
TPDATA[4]
22
TPDATA[5]
23
TPDATA[6]
24
TPDATA[7]
25
TPCLK
26
TPSOP
27
NIRQ
28
SDA
29
VDD33_2
30
SCL
31
VSS_1
32
VDD_2
33
VSS_2
34
VSS33_2
35
PLLAVDD
36
PLLAVSS
37NRST
38OPM
39VDD33_3
40NC_2
41VSS33_3
42XTALI
43XTALO
44VSS_3
45XM
46VDD_3
47VSSDAD10
48VCCAAD10A
JP501
X500
25MHz
+3.3V_FE
VSB_CTRL
R519
0
0
R505
22
L507
CB3216PA501E
FE_TUNER_SDA
POWER_EN
006:AR30;004:X20;004:AL8;004:AN20
R500
0
OPT
Q500
ISA1530AC1
E
B
C
C558
0.1uF
50V
0.1uF
50V
C513
0.01uF
0.01uF
50V
C556
100uF
100uF
16V
C505
0.33uF
0.33uF
16V
LD500
PV
FE_VMAIN
006:C23
C527
36pF
50V
OPT
VCOMO
006:C23
R542
0
OPT
C533
0.1uF
0.1uF
+1.2V_PVSB
IC503
SC4215ISTRT
3
VIN
2
EN
4
NC_2
1
NC_1
5
NC_3
6
VO
7
ADJ
8
GND
R508
10K
IC501
KIA78R05F
1
VIN
2
VC
3
VOUT
4
NC
5
GND1
6
GND2
L502
CM2012F6R8KT
6.8uH
IF_P
R531
0
R515
270
FE_TUNER_SCL
+5V_TU
C506
0.1uF
50V
AR501
100
C554
OPT
R530
100
R511
0
0
C557
0.1uF
50V
0.1uF
50V
C514
10uF
10V
10uF
10V
L506
270nH
R552
8.2K
IF_N
C526
82pF
50V
82pF
50V
TU500
TDVW-H103F
Tuner-LGIT
14
IF_AGC
13
DIF[-]
5
RF_AGC
12
DIF[+]
11
NC_3
NC_2
2
19
VIDEO
18
AUDIO
10
AS
4
+B1
NC_1
1
17
NC_4
9
CLOCK
8
DATA
3
GND_1
16
SIF
7
GND_2
6
NC[VT]
15
+B2
20
SHIELD
TS_DATA[0-7]
+3.3V_DVDD_PVSB
GND
AR502
100
C511
0.1uF
16V
0.1uF
16V
OPT
C536
0.1uF
0.1uF
+3.3V_DVDD_PVSB
+3.3V_PVSB
R551
15K
C541
0.01uF
R520
0
0
C530
10uF
16V
3216
R526
1K
C547
2.2uF
16V
2.2uF
16V
L508
500
R514
270
IF_AGC
C510
100pF
50V
100pF
50V
R547
22
L500
BG2012B800
IF_N
R509
OPT
OPT
C545
2.2uF
16V
2.2uF
16V
C501
100uF
16V
16V
R525
0
1/4W
5%
5%
+5V_TU
R524-*1
0
IF_Short
R513
470
R504
2.2K
2.2K
OPT
R529
1K
C523
27pF
50V
27pF
50V
OPT
FE_TUNER_SDA
TS_VALID
L503
CM3216F100KE
10uH
R550
10K
C503
100uF
16V
FE_TUNER_SCL
TS_SYNC
TS_SYNC
R517
0
TS_CLK
R518
0
+1.2V_DVDD_PVSB
C516
0.1uF
50V
OPT
R507
12K
FE_DEMOD_SDA
FE_SIF
006:V30
C549
1uF
16V
16V
+5V_TU
R544
47K
D500
1N4148W
R523
220nH
IF_LC_Filter
R503
10K
OPT
OPT
R543
1K
1K
C529
47pF
C517
100uF
16V
16V
C522
100uF
16V
16V
VSB +3.3V B+ BLOCK
VSS33
PLLAVDD
The value of coil & cap’ could be changed to optimized each
MStar Application
VSB +1.0V B+ BLOCK
TPDATA[0]
VDD
Option for FM Rejection
TPVALID
VSS33
R2
JTAG
SDA
R1
VDD33
TPCLK
TPDATA[7]
SCL
TPERR
VDD33
TPDATA[6]
VSS
TPDATA[5]
VROA
TPDATA[4]
ANTCON
TPDATA[3]
INCAP
TPDATA[2]
VDD
TPDATA[1]
RF OUT
XTALI
Close to tuner
VSS
VINA2
(I2C Channel 6)
OPM
I2CSEL
NRST
SLIM_SCAN
XTALO
VSS33
VINA1
XM
VDD
I2CRPT_SCL
NIRQ
VCCAAD10A
I2CRPT_SDA
VSS
VSSAD10
IF OUT
TPSOP
MStar Application
VDD33
VSSAAD10A
PLLAVSS
V0 = 0.8(R1+R2) / R2
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