LG 22LN45XX / 22LN4500 (CHASSIS:LJ31A) Service Manual ▷ View online
THERMAL
THERMAL
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.
LED DRIVER
11 12
R1132
220K 1%
23.6"
C1127
1uF
100V
100V
23.6"
P1101
SM14B-SRSS-TB
24V
24V
24V
24V
24V
GND
GND
GND
GND
GND
ERROR_OUT
INV_ON
NC
PWN_DIM
GND
21.6"/26"
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
L1100
10uH
21.6"/26"
R1113
3.3
3.3
1/16W
21.6"/26"
VOUT
Q1101
AOD478
AOD478
21.6"/26"
S
D
G
+19V
WLED_ENABLE
R1102
10K
21.6"/26"
C1139
1uF
50V
1uF
50V
OPT
JP1105
R1115
0.1
1W
21.6"/26"
R1136
0
23.6"
+24V_BLU
C1124
33uF
100V
33uF
100V
23.6"
C1126
0.22uF
16V
21.6"/26"
C1117
2200pF
50V
2200pF
50V
21.6"/26"
IC1101
TPS40210DGQR
21.6"/26"
3
DIS/EN
2
SS
4
COMP
1
RC
5
FB
6
GND
7
ISNS
8
GDRV
9
BP
10
VDD
11
[EP]
C1115
0.1uF
50V
0.1uF
50V
OPT
C1120
47pF
50V
47pF
50V
21.6"/26"
C1111
100pF
50V
23.6"
ERROR_OUT
Q1103
AOD478
AOD478
23.6"
S
D
G
R1106
1.5K
1/16W
21.6"/26"
C1118
47uF
25V
47uF
25V
23.6"
R1105
10K
10K
1/16W
21.6"/26"
WLED_DIM_ADJ
C1114
1000pF
50V
1000pF
50V
23.6"
C1136
68uF
35V
35V
21.6"/26"
JP1107
R1121
100
100
23.6"
C1130
1uF
1uF
100V
OPT
D1103
100V
BR210
23.6"
JP1104
JP1109
R1133
1.5K 1%
23.6"
VOUT
R1114
0.1
1W
21.6"/26"
C1134
100pF
50V
100pF
50V
21.6"/26"
R1134
30K 1%
23.6"
P1100
05002HR-H12J05
23.6"
1
2
3
4
5
6
7
8
9
10
11
12
13
C1122
1uF
25V
1uF
25V
23.6"
JP1088
JP1100
+3.3V_ST
R1100
510K
510K
1/8W
1%
1%
23.6"
C1116
100pF
50V
100pF
50V
23.6"
WLED_ENABLE
R1123
100K
100K
1%
23.6"
R1137
0.1
1W
1%
23.6"
+19V
JP1111
R1101
4.7K
4.7K
21.6"/26"
L1101
33uH
23.6"
Q1102
MMBT3904(NXP)
MMBT3904(NXP)
21.6"/26"
E
B
C
WLED_DIM_ADJ
JP1110
JP1108
C1128
1uF
100V
100V
23.6"
R1127
100
100
23.6"
C1129
1uF
1uF
100V
OPT
R1131
39K 1%
23.6"
C1125
0.047uF
25V
23.6"
R1128
22K
1%
23.6"
C1123
4700pF
50V
23.6"
JP1103
C1135
68uF
35V
35V
21.6"/26"
R1135
1.5K 1%
23.6"
R1111
1K
1K
1/16W
21.6"/26"
C1113
10uF
25V
10uF
25V
21.6"/26"
C1119
100pF
100pF
50V
21.6"/26"
BLU_CURRENT_CTL
R
1
1
0
3
1
0
K
1
/
1
6
W
21.6"/26"
C1121
4.7uF
50V
4.7uF
50V
23.6"
JP1102
JP1101
C1137
1uF
50V
1uF
50V
21.6"/26"
R1125
24K
1%
23.6"
+24V_BLU
R1109
30K
30K
1/16W
21.6"/26"
C1112
47uF
25V
25V
21.6"/26"
MULTI_ON
JP1106
C1138
1uF
50V
1uF
50V
21.6"/26"
D1101
100V
BR210
21.6"/26"
R1110
100
100
1/16W
OPT
R1122
100K
100K
23.6"
R1108
51K
51K
1/16W
21.6"/26"
R1104
470K
1/16W
21.6"/26"
C1133
1uF
10V
1uF
10V
OPT
R1124
1.5K
1%
23.6"
R1107
220K
220K
1/16W
21.6"/26"
R1129
100K
1%
23.6"
R1112
0
1/16W
OPT
IC1100
DT1641AS
23.6"
3
NC_1
2
OVP
4
PGND_1
1
EN
6
PDIM
5
PGND_2
7
RISET
8
LS8
9
LS7
10
LS6
11
LS5
12
NC_2
13
LGND
14
LS4
15
LS3
16
LS2
17
LS1
18
RT
19
COMP
20
RSS
21
NDRV
22
CS
23
VREF
24
VIN
25
[EP]GND
C1132
0.1uF
25V
0.1uF
25V
21.6"/26"
C1131
1uF
25V
1uF
25V
21.6"/26"
NC4_S7LRM
LED DRIVER
12.03.08
EAE61103401 2.2uF MLCC 1ea(3225)
->EAE61381601 1uF MLCC 2ea(3216)
EAE61103401 2.2uF MLCC 1ea(3225)
->EAE61381601 1uF MLCC 2ea(3216)
11.11.15
1K->100ohm
1000pF->100pF
1K->100ohm
1000pF->100pF
11.12.02
22uF 2EA->47uF 1EA
EAE60365101->EAE61423901
22uF 2EA->47uF 1EA
EAE60365101->EAE61423901
12.08.11
270K+270K
->510K 2012size
270K+270K
->510K 2012size
11.11.15
1000pF->100pF
1000pF->100pF
12.08.11
24K->22K
24K->22K
11.10.27
Parallel 0ohm DEL
Parallel 0ohm DEL
12.05.17 To improve audible noise
C1103 2200pF->47pF
C1105 47pF->OPT
C1103 2200pF->47pF
C1105 47pF->OPT
11.11.29
Diode change canceled(111202)
EAH61112701->EAH61533501
Diode change canceled(111202)
EAH61112701->EAH61533501
12.07.03 To improve backlight blinking
C1103 47pF->2200pF
C1105 47pF->Apply
R1103 18K->470K
C1103 47pF->2200pF
C1105 47pF->Apply
R1103 18K->470K
12.05.17
C1110 EAE62721801 33uF,
C1111 0CH8106J691 10uF
-> EAE60171701 68uF 2EA
C1110 EAE62721801 33uF,
C1111 0CH8106J691 10uF
-> EAE60171701 68uF 2EA
12.01.10
Main AOD478
Sub AP18T10GH
Main AOD478
Sub AP18T10GH
11.11.29
0DSKE00048A Diode DEL
0DSKE00048A Diode DEL
12.10.16
EAN62407801->EAN62656301
EAN62407801->EAN62656301
2012.11.18
EAX65077302
121118
C1132
0CK104BF56A
->0CK104BH56A
C1132
0CK104BF56A
->0CK104BH56A
121118
C1132
0CK105CD56A
->0CK105CK56A
C1132
0CK105CD56A
->0CK105CK56A
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_NON_EU
26 12
SIGN1501491
R3782
2K
2K
OPT
R3714
0
NON_LN4500 ASIA
C3738
0.1uF
16V
0.1uF
16V
C3742
20pF
50V
20pF
50V
BR(TU_I2C_FILTER)
TU_GND_A
Q3703
MMBT3906(NXP)
BR(TU_BUFFER_VIDEO)
E
B
C
+3.3V_TU
+3.3V_TU
TU3704-*1
TDSN-T601F
(OPT)SI2178_TW_2INPUT_H
1
RF_S/W_CTL
2
RESET_TUNER
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
IF_AGC
10
DIF[P]
11
DIF[N]
12
NC_1
13
NC_2
14
NC_3
15
GND
16
NC_4
17
NC_5
18
NC_6
19
NC_7
20
NC_8
21
NC_9
22
NC_10
23
NC_11
24
NC_12
25
NC_13
26
NC_14
27
NC_15
28
SHIELD
A1
A1
B1
B1
C3703
0.1uF
16V
OPT
+3.3V_TU
C3716
0.1uF
16V
HALF_NIM
C3743
20pF
50V
20pF
50V
BR(TU_I2C_FILTER)
C3737
100pF
50V
100pF
50V
TU_CVBS
IF_N_MSTAR
R3801-1*
47
47
BR(FULL_NIM_D_DEMODE_47)
C3707
100pF
50V
100pF
50V
Q3705
MMBT3906(NXP)
(OPT)TU_BUFFER_SIF
E
B
C
R3802-1*
47
47
BR(FULL_NIM_D_DEMODE_47)
LNA_CTRL_1
+3.3V_TU
TU3700-*1
TDSS-G501D(B)
(ASIA_M33)SI2176_ATSC_1INPUT_H
5
3.3V
11
DLIF_[N]
2
RESET
10
DLIF_[P]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
1.8V
6
NC_2
12
SHIELD
A1
A1
B1
B1
R3740-*3
2.2K
BR(TU_IIC_2.2K)
C3702
0.1uF
16V
BR
R3733
100K
R3753
4.7K
(OPT)TU_BUFFER_SIF
LNA_CTRL_2
R3804
0
0
(OPT)FULL_NIM_D_DEMODE_0
R3732
100
100
TUNER_RESET
R3780
3.3
3.3
OPT
TU_SCL
R3803
0
0
(OPT)FULL_NIM_D_DEMODE_0
+3.3V_TUNER
R3803-*1
47
47
BR(FULL_NIM_D_DEMODE_47)
R3804-*1
47
47
BR(FULL_NIM_D_DEMODE_47)
+3.3V_TU
BR_RESET_DEMOD
R3735
NON_BR(TU_I2C_NON_FILTER)
33
R3801
0
0
(OPT)FULL_NIM_D_DEMODE_0
TU_GND_A
R3749
0
BR(TU_BUFFER_VIDEO)
TU3702
TDSH-G501D(B)
TDSH-G501D(B)
(ASIA_LN4xxx)ISOLATOR_DVB_1INPUT_H
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
A1
A1
B1
B1
A2
A2
B2
B2
+3.3V_TU
R3796
2.2K
2.2K
(OPT)TW_FE_LNA
TU_GND_A
R3775
0
0
BR(TU_NON_BUFFER_SIF)
R3741
1.8K
KR/US(TU_IIC_ATSC_1.8K)
C3708
0.1uF
16V
16V
R3802
0
0
(OPT)FULL_NIM_D_DEMODE_0
TU3700
TDSS-H501F(B)
(KR/US)SI2158_ATSC_1INPUT_H
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
+B2[1.8]
6
NC_2
12
SHIELD
A1
A1
B1
B1
C3706
100uF
16V
16V
OPT
R3799
10K
BR(FULL_NIM)
C3753
0.1uF
16V
(OPT)TW_FE_LNA
C3701
0.1uF
16V
0.1uF
16V
BR(RF_SW_OPT)
C3754
0.1uF
16V
0.1uF
16V
BR(FULL_NIM)
C3705
100uF
16V
16V
OPT
C3723
22uF
10V
22uF
10V
R3704
100
HALF_NIM
FE_TS_SYNC
FE_TS_VAL_ERR
C3725
0.1uF
16V
16V
R3784
0
BR
R3741-*1
1K
ASIA(TU_IIC_NON_ATSC_1K)
C3750
5pF
50V
OPT
5pF
50V
OPT
R3741-*3
2.2K
BR(TU_IIC_2.2K)
IF_P_MSTAR
R3797
2.2K
2.2K
(OPT)TW_FE_LNA
R3715
0
NON_LN4500 ASIA
R3798
1K
BR(FULL_NIM)
C3751
5pF
50V
5pF
50V
OPT
R3783
0
BR
TU3704
TDSN-T701F(B)
(OPT)SI2178_TW_LNA_2INPUT_H
1
RF_S/WCTL
2
RESET
3
SCL
4
SDA
5
B1[+3.3V]
6
SIF
7
B2[1.8V]
8
CVBS
9
IF_AGC
10
DIF[P]
11
DIF[N]
12
NC_1
13
NC_2
14
NC_3
15
GND
16
NC_4
17
NC_5
18
NC_6
19
NC_7
20
NC_8
21
NC_9
22
NC_10
23
NC_11
24
NC_12
25
NC_13
26
NC_14
27
NC_15
A1
59
LNA_CTRL_1
57
LNA_CTRL_2
58
A1
B1
SHIELD
B1
+1.8V_TUNER
R3760
10
KR/US(HALF_NIM)
FE_TS_DATA[0]
R3761
10
KR/US(HALF_NIM)
R3750
1K
OPT
R3751
220
BR(TU_BUFFER_VIDEO)
R3774
470
(OPT)TU_BUFFER_SIF
470
(OPT)TU_BUFFER_SIF
TU_SIF
+3.3V_TU
TU3703
TDSN-B601F(B)
(BR)SI2178_BR_2INPUT_H
1
RF_S/W_CTL
2
RESET_TUNER
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+B3[3.3V]
13
+B4[1.23V]
14
RESET_DEMOD
15
GND
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
DATA
21
NC_4
22
NC_5
23
NC_6
24
NC_7
25
NC_8
26
NC_9
27
NC_10
28
SHIELD
A1
A1
B1
B1
R3762
2K
2K
OPT
+1.23V_TUNER
R3756
0
(OPT)TU_NON_BUFFER_VIDEO
R3740-*1
1K
ASIA(TU_IIC_NON_ATSC_1K)
C3715
22uF
10V
22uF
10V
C3727
0.1uF
16V
RF_SWITCH_CTL
R3740
1.8K
KR/US(TU_IIC_ATSC_1.8K)
R3752
220
BR(TU_BUFFER_VIDEO)
C3710
0.1uF
16V
FE_TS_CLK
R3758
82
82
BR
IF_AGC_MAIN
TU_GND_A
R3781
3.3
OPT
C3718
0.1uF
16V
BR(FULL_NIM)
TU_SDA
R3736
NON_BR(TU_I2C_NON_FILTER)
33
C3752
0.1uF
16V
(OPT)TW_FE_LNA
TU_GND_A
R3705
0
BR(RF_SW_OPT)
L3703
UBW2012-121F
L3706
120OHM
BR(FULL_NIM)
L3707
R3761-*1
10
10
ASIA(HALF_NIM/IF_FILTER)
R3760-*1
10
10
ASIA(HALF_NIM/IF_FILTER)
R3736-*1
BR(TU_I2C_FILTER)
R3735-*1
BR(TU_I2C_FILTER)
C3713-*1
20pF
50V
20pF
50V
BR(TU_I2C_FILTER)
C3711-*1
20pF
50V
20pF
50V
BR(TU_I2C_FILTER)
C3711
18pF
50V
18pF
50V
NON BR(TU_I2C_NON_FILTER)
C3713
18pF
50V
18pF
50V
NON BR(TU_I2C_NON_FILTER)
GLOBAL tuner block except EU and China
NC4_S7LRM
EAX65077302
2012.11.18
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
BRAZIL(WITH AD)
0
Pull-up can’t be applied
because of MODEL_OPT_2
because of MODEL_OPT_2
0
TUNER MULTI-OPTION
close to TUNER
1
close to TUNER
Size change,0929
60mA
HPF
ASIA,M33 (WO AD)
0
TW_FE_LNA FILTER_SETTING
should be guarded by ground
GND seperation for ASIS tuner
12.08.14
diagonal noise improve
diagonal noise improve
ASIA,LN4xxxx(WO AD)
close to TUNER
54MHz~350MHz
TAIWAN(WITH AD)
KR/US(WO AD)
121118
TU3700-*1 TDSS-H101F DEL
TU3700-*2 TDSS-G501D ->TU3700-*1
TU3700-*1 TDSS-H101F DEL
TU3700-*2 TDSS-G501D ->TU3700-*1
LPF
CTRL_2
0
CTRL_1
350Hz~450MHz
Close to the tuner
1
450Hz~870MHz
Filter_Type
Through
TAIWAN (WITH AD)
close to the tuner pin, add,09029
Add,0929
Frequence
close to TUNER
121118
SS BEAD->SUNLORD BEAD
SS BEAD->SUNLORD BEAD
121118
R3705 1K->0
R3800 DEL
R3705 1K->0
R3800 DEL
121118
SS BEAD->SUNLORD BEAD
SS BEAD->SUNLORD BEAD
121118
SS BEAD->SUNLORD BEAD
SS BEAD->SUNLORD BEAD
121220
US(+3.3V_TU Pull-up) 1.2K->1.8K
US(+3.3V_TU Pull-up) 1.2K->1.8K
130118
Option DEL
Option DEL
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.
COMP
28 12
ZD2803
5.6B
C2829
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER
C2830
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER
L2805
CM2012FR10KT
(OPT)COMP_ADC_FILTER_L
R2824
75
D2818
5.6V
OPT
C2810
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER(AUDIO)
R2842
1K
COMP_L_IN
ZD2804
5.6B
ZD2807
5.6B
JP2813
C2826
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER
C2837
1000pF
50V
50V
+3.3V_Normal
L2806
CM2012FR10KT
(OPT)COMP_ADC_FILTER_L
C2811
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER(AUDIO)
L2811-*1
0
0
COMP_NON_ADC_FILTER(AUDIO)
JP2814
R2834
12K
L2812
CM2012FR10KT
(OPT)COMP_ADC_FILTER_L(AUDIO)
R2837
10K
C2838
1000pF
50V
50V
JP2812
JP2815
ZD2802
5.6B
C2828
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER
R2823
75
AV_CVBS_DET
L2805-*1
0
0
COMP_NON_ADC_FILTER
C2825
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER
R2831
10K
10K
COMP_Pb+
L2812-*1
0
0
COMP_NON_ADC_FILTER(AUDIO)
R2841
10K
C2827
47pF
50V
47pF
50V
(OPT)COMP_ADC_FILTER
C2813
0.1uF
0.1uF
16V
COMP_Pr+
L2806-*1
0
0
COMP_NON_ADC_FILTER
D2817
5.6V
OPT
R2833
12K
R2832
10K
10K
ZD2806
5.6B
ZD2805
5.6B
L2807-*1
0
0
COMP_NON_ADC_FILTER
R2822
75
COMP_DET
R2838
1K
L2807
CM2012FR10KT
(OPT)COMP_ADC_FILTER_L
R2825
470K
470K
JP2811
L2811
CM2012FR10KT
(OPT)COMP_ADC_FILTER_L(AUDIO)
+3.3V_Normal
JP2810
R2826
470K
COMP_Y+/AV_CVBS_IN
JK2800
PPJ234-05
5A
[GN]O-SPRING
6A
[GN]E-LUG
4A
[GN]CONTACT
7B
[BL]E-LUG-S
5B
[BL]O-SPRING
7C
[RD]E-LUG-S
5C
[RD]O-SPRING_1
4C
[RD]CONTACT_1
5D
[WH]O-SPRING
4E
[RD]CONTACT_2
5E
[RD]O-SPRING_2
6E
[RD]E-LUG
20V
D2816
D2815
20V
COMP_R_IN
NC4_S7LRM
COMPONENT&CVBS
2012.11.18
EAX65077302
COMPONENT&CVBS
121017
Change
Change
121019
ADC_FILTER(AUDIO) ADD
ADC_FILTER(AUDIO) ADD
121128
Change
Change
121017
Change
Change
121229
OPT -> APPLY for ESD
OPT -> APPLY for ESD
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