DOWNLOAD LG 22LN45XX / 22LN450U / 22LN457U (CHASSIS:LC31A / LD31T) Service Manual ↓ Size: 6.69 MB | Pages: 33 in PDF or view online for FREE

Model
22LN45XX 22LN450U 22LN457U (CHASSIS:LC31A LD31T)
Pages
33
Size
6.69 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
22ln45xx-22ln450u-22ln457u-chassis-lc31a-ld31t.pdf
Date
PREV: LG 22LN41XX / 22LN4110 / 22LN4130 (CHASSIS:LM91M) Service Manual

LG 22LN45XX / 22LN450U / 22LN457U (CHASSIS:LC31A / LD31T) 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.
PCMCI
19     12
CI_DATA[6]
CI_ADDR[11]
CI_ADDR[14]
CI_ADDR[6]
CI_DATA[0]
FE_TS_DATA[0]
FE_TS_DATA[3]
FE_TS_DATA[7]
CI_DATA[2]
CI_ADDR[10]
CI_DATA[0-7]
CI_ADDR[0]
FE_TS_DATA[0-7]
CI_ADDR[13]
CI_DATA[0-7]
CI_DATA[0-7]
CI_ADDR[5]
FE_TS_DATA[4]
FE_TS_DATA[2]
PCM_D[7]
FE_TS_DATA[6]
CI_DATA[7]
CI_DATA[2]
CI_DATA[7]
CI_DATA[3]
CI_ADDR[2]
CI_ADDR[1]
CI_ADDR[9]
FE_TS_DATA[5]
PCM_D[1]
CI_DATA[1]
CI_ADDR[3]
CI_DATA[1]
PCM_D[0-7]
CI_DATA[4]
CI_ADDR[4]
PCM_D[3]
PCM_D[6]
CI_ADDR[12]
PCM_D[4]
PCM_D[0]
PCM_D[2]
CI_DATA[0]
CI_DATA[4]
PCM_D[5]
CI_DATA[5]
CI_DATA[5]
CI_DATA[6]
CI_ADDR[7]
FE_TS_DATA[1]
CI_DATA[3]
CI_ADDR[8]
R1918
47
PCM_A[5]
C1907
0.1uF
16V
R1927
33
/CI_CD2
PCM_A[1]
CI_ADDR[4]
R1904
10K
PCM_A[3]
GND
/PCM_CD
CI_DATA[0-7]
C1915
0.1uF
16V
CI_MCLKI
C1913
0.1uF
16V
L1902
BLM18PG121SN1D
CI_MISTRT
R1915
47
C1912
0.1uF
16V
OPT
R1925
100
/CI_CD2
R1919
47
R1933
22
CI_DET
CI_MDI[1]
/PCM_WE
CI_TS_DATA[2]
CI_MDI[4]
IC1901
74LVC1G32GW
3
GND
2
A
4
Y
1
B
5
VCC
+5V_Normal
AR1906
33
C1905
0.1uF
R1905
10K
CI_ADDR[1]
GND
+3.3V_CI
R1930
33
CI_ADDR[13]
CI_TS_DATA[7]
CI_MDI[1]
CI_MDI[7]
PCM_A[8]
PCM_D[0-7]
REG
NAND_EN
R1902
47
/PCM_OE
CI_IOWR
CI_ADDR[7]
AR1909
33
C1902
0.1uF
CI_ADDR[2]
CI_DET
CI_TS_SYNC
CI_ADDR[10]
R1912
10K
OPT
R1929
33
/PCM_WAIT
+3.3V_CI
CI_ADDR[11]
PCM_A[14]
C1914
2pF
50V
R1910
0
OPT
/PCM_CE
CI_MDI[3]
PCM_A[10]
+5V_Normal
FE_TS_CLK
CI_TS_VAL
CI_MDI[2]
R1932
22
CI_IORD
CI_MDI[5]
+3.3V_Normal
CI_ADDR[14]
FE_TS_SYNC
PCM_A[2]
CI_ADDR[12]
C1901
0.1uF
OPT
PCM_A[11]
CI_MIVAL_ERR
CI_MDI[3]
+3.3V_CI
CI_DATA[0-7]
CI_IORD
AR1905
33
FE_TS_VAL_ERR
CI_MCLKI
R1903
10K
C1909
0.1uF
CI_TS_CLK
CI_OE
Q1901
MMBT3904(NXP)
E
B
C
GND
/PCM_IORD
AR1901
33
GND
CI_MDI[2]
PCM_A[4]
R1928
10K
CI_ADDR[8]
CI_OE
AR1908
33
CI_MDI[0]
+5V_Normal
+5V_Normal
R1914
22K
GND
R1920
100
PCM_5V_CTL
CI_MIVAL_ERR
PCM_A[6]
CI_MDI[5]
R1908
100
R1913
10K
CI_ADDR[3]
PCM_RST
CI_TS_DATA[6]
AR1913
33
AR1903
33
CI_MDI[7]
CI_MISTRT
+5V_CI_ON
R1911
10K
CI_MDI[6]
CI_ADDR[5]
R1923
10K
OPT
+5V_CI_ON
CI_TS_DATA[1]
C1911
4.7uF
10V
R1909
0
OPT
C1910
0.1uF
16V
GND
L1901
BLM18PG121SN1D
PCM_A[9]
PCM_A[7]
Q1902
AO3407A
G
D
S
AR1912
33
R1916
0
OPT
R1906
10K
IC1902
74LVC245A
3
A1
2
A0
4
A2
1
DIR
6
A4
5
A3
7
A5
8
A6
9
A7
10
GND
11
B7
12
B6
13
B5
14
B4
15
B3
16
B2
17
B1
18
B0
19
OE
20
VCC
R1922
2.2K
CI_MDI[4]
CI_ADDR[6]
R1901
47
PCM_A[0]
AR1907
33
CI_ADDR[0]
REG
FE_TS_DATA[0-7]
+5V_Normal
/CI_CD1
+3.3V_CI
C1906
10uF
10V
PCM_A[13]
CI_TS_DATA[0]
R1924
10K
GND
CI_IOWR
R1917
10K
R1921
10K
P1900
10067972-000LF
EAG41860102
G1
G2
57
21
52
16
10
47
41
5
36
59
23
45
54
18
49
43
13
7
38
2
25
56
20
51
15
9
46
40
4
35
58
22
53
17
11
48
42
12
6
37
1
24
55
19
50
44
14
8
39
3
26
60
27
61
28
62
29
63
30
64
31
32
33
34
65
66
67
68
69
CI_WE
R1931
100
CI_TS_DATA[4]
CI_ADDR[9]
R1926
33
R1907
100
/PCM_REG
C1903
0.1uF
16V
/PCM_IOWR
CI_ADDR[0-14]
CI_MDI[0]
CI_WE
CI_TS_DATA[5]
C1904
0.1uF
16V
CI_MDI[6]
PCM_A[12]
/PCM_IRQA
C1908
0.1uF
16V
CI_TS_DATA[3]
/CI_CD1
CI TS INPUT
CI SLOT
CI HOST I/F
* Option name of this page : CI_SLOT
CI Region
(because of Hong Kong)
CI POWER ENABLE CONTROL
CLOSE TO MSTAR
CI DETECT
NC4_S7LRM
EAX65077401
2012.09.15
CLOSE TO MSTAR
120915
ADDED
CLOSE TO MSTAR
120915
ADDED
120915
ADDED
120915 BufferIC change
0ITO742440D
->0ISTLPH048A
OE
H
DIR
L
L
INPUT
HIGH-Z
CI ADDRESS
HIGH-Z
OUTPUT
H
INPUT
NAND ADDRESS
X
L
OUTPUT
120915 
Array->normal resistor
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.
TUNER_EU
26     12
+3.3V_TU
C2651
20pF
50V
IF_P_MSTAR
C2626
0.1uF
16V
A_DEMODE
R2609-*1
MLG1005SR27JT
TU_I2C_FILTER
C2602
100pF
50V
C2603
0.1uF
16V
RF_SW_OPT
IF_AGC_SEL
R2636
2K
NON_A_DEMODE
C2627
100uF
16V
OPT
R2614
100K
Q2601
MMBT3906(NXP) 
A_DEMODE
E
B
C
C2643
22uF
10V
+3.3V_TU
TU_SDA
C2621
100pF
50V
+3.3V_TUNER
C2600
0.1uF
16V
TU_SIF
R2618
470
A_DEMODE
R2603
0
RF_SW_OPT
TU_CVBS
R2611
100
C2648
0.1uF
16V
C2623
0.1uF
16V
R2635
680
NON_A_DEMODE
R2870
1K
Q2600
MMBT3906(NXP) 
A_DEMODE
E
B
C
R2638
0
A_DEMODE
C2644
0.1uF
16V
C2628
100uF
16V
OPT
R2610
TU_I2C_NON_FILTER
33
C2604
0.1uF
16V
C2622
0.1uF
16V
R2610-*1
MLG1005SR27JT
TU_I2C_FILTER
TU2600
TDSS-G501D 
5
3.3V
11
DLIF[N]
2
RESET
10
DLIF_[P]
4
SDA
1
NC
9
IF_AGC
8
ALIF_[P]
3
SCL
7
1.8V
6
ALIF_[N]
12
SHIELD
A1
A1
B1
B1
+3.3V_TU
R2619
82
A_DEMODE
R2608
0
C2652
20pF
50V
TU_SCL
LNA2_CTL
R2616
4.7K
A_DEMODE
+1.8V_TUNER
R2602
0
+3.3V_TU
C2624
0.1uF
16V
OPT
C2607
20pF
50V
TUNER_RESET
IF_AGC_MAIN
+3.3V_TU
RF_SWITCH_CTL
C2646
22uF
10V
R2601
0
L2606
CIS21J121
R2871
1K
R2637
680
NON_A_DEMODE
IF_N_MSTAR
R2625
220
A_DEMODE
+3.3V_TU
R2609
TU_I2C_NON_FILTER
33
C2612
20pF
50V
DEMOD_RESET
R2624
220
A_DEMODE
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet. 
NETCAST4.0 EU(DVB-T/C)_TUNER_BLOCK
should be guarded by ground
Close to TUNER
close to TUNER
NC4_S7LRM
EAX65077401
2012.09.15
12.08.14 
diagonal noise improve
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.
SCART&COMP
28    12
GP4L_S7LR2
C2829
47pF
50V
COMP_ADC_FILTER
R2813
10K
SCART JACK
IC2800
SN324
SCART JACK
3
NON_INV_IN1
2
INV_IN1
4
VCC
1
OUT1
6
INV_IN2
5
NON_INV_IN2
7
OUT2
8
OUT3
9
INV_IN3
10
NON_INV_IN3
11
GND
12
NON_INV_IN4
13
INV_IN4
14
OUT4
R2814
15K
SCART JACK
C2824
33pF
SCART JACK
D2800
20V
OPT
R2854
10K
SCART JACK
C2832
47pF
50V
SCART_ADC_FILTER
JP2807
L2807
CM2012FR10KT 
COMP_ADC_FILTER_L
COMP_DET
C2811
1000pF
50V
R2819
12K
SCART JACK
R2846
2.2K
SCART JACK
R2831
10K
DTV/MNT_L_OUT
JP2808
JK2801
PSC008-01
SCART JACK
1
AUDIO_R_OUT
2
AUDIO_R_IN
3
AUDIO_L_OUT
4
AUDIO_GND
5
B_GND
6
AUDIO_L_IN
7
B_OUT
8
ID
9
G_GND
10
D2B_IN
11
G_OUT
12
D2B_OUT
13
R_GND
14
RGB_GND
15
R_OUT
16
RGB_IO
17
SYNC_GND1
18
SYNC_GND2
19
SYNC_OUT
20
SYNC_IN
21
COM_GND
22
AV_DET
R2844
10K
OPT(EU_SCART mute)
+19V_SCART
R2837
10K
SCART1_Rout
D2815
5.6V
OPT
JP2814
R2835
10K
SCART JACK
C2802
220pF
50V
OPT
C2808
4700pF
OPT
0
R2809
SCART JACK
C2817
0.1uF
50V
R2852
33K
SCART JACK
R2851
470K
OPT
L2806-*1
0
COMP_NON_ADC_FILTER
C2819
330pF
SCART JACK
D2803
20V
SCART JACK
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
SCART1_MUTE
L2808
CM2012FR10KT 
SCART_ADC_FILTER_L
R2856
200
SCART JACK
SC1_R+
COMP_Y+/AV_CVBS_IN
D2812
20V
C2834
47pF
50V
SCART_ADC_FILTER
R2838
1K
JP2801
MMBT3904(NXP)
Q2802
OPT(EU_SCART mute)
+3.3V_Normal
R2808
4.7K
SCART JACK
C2821
10uF
10V
SCART JACK
DTV/MNT_R_OUT
C2813
0.1uF
16V
R2807
75
SCART JACK
R2841
10K
L2810-*1
0
SCART_NON_ADC_FILTER
R2826
470K
R2858
100
SCART JACK
D2817
5.6V
OPT
R2802
75
SCART JACK
L2805
CM2012FR10KT 
COMP_ADC_FILTER_L
C2812
47uF
25V
SCART JACK
C2820
330pF
SCART JACK
R2850
470K
OPT
COMP_L_IN
COMP_R_IN
D2806
20V
OPT
C2825
47pF
50V
COMP_ADC_FILTER
C2823
33pF
SCART JACK
SCART1_DET
R2820
0
SCART JACK
C2833
47pF
50V
SCART_ADC_FILTER
C2814
10uF
25V
SCART JACK
Q2800
MMBT3906(NXP) 
SCART JACK E
B
C
R2839
2K
OPT(EU_SCART mute)
5.6V
OPT
D2816
SC1_R_IN
D2818
5.6V
OPT
R2804
470K
SCART JACK
R2821
200
SCART JACK
SC1_L_IN
R2828
470
SCART JACK
C2816
0.1uF
OPT(EU_SCART mute)
R2842
1K
+3.3V_Normal
Q2804
MMBT3906(NXP) 
OPT(EU_SCART mute)
1
2
3
R2840
2K
OPT(EU_SCART mute)
JP2803
+3.3V_ST
D2814
20V
L2808-*1
0
SCSRT_NON_ADC_FILTER
C2826
47pF
50V
COMP_ADC_FILTER
R2818
12K
SCART JACK
D2811
20V
SCART JACK
R2805
470K
SCART JACK
L2805-*1
0
COMP_NON_ADC_FILTER
R2833
12K
R2845
220K
SCART JACK
R2825
470K
R2812
10K
SCART JACK
D2802
20V
OPT
R2823
75
COMP_Pr+
R2849
5.6K
SCART JACK
+19V_SCART
C2804
1000pF
50V
OPT
R2824
75
R2857
360
SCART JACK
R2834
12K
C2807
4700pF
OPT
L2809-*1
0
SCART_NON_ADC_FILTER
JP2811
R2848
5.6K
SCART JACK
R2816
75
SCART JACK
R2806
75
SCART JACK
SC1_ID
JP2809
+3.3V_Normal
D2819
MMBD6100
OPT(EU_SCART mute)
A2
C
A1
SC1_FB
R2853
33K
SCART JACK
D2810
20V
OPT
DTV/MNT_VOUT
JP2802
DTV/MNT_L_OUT
JP2810
L2807-*1
0
COMP_NON_ADC_FILTER
C2815
0.1uF
50V
SCART JACK
C2800
47pF
50V
SCART JACK
C2822
10uF
10V
SCART JACK
R2810
1K
SCART JACK
DTV/MNT_R_OUT
C2827
47pF
50V
COMP_ADC_FILTER
SCART1_MUTE
JP2804
SC1_SOG_IN
D2813
20V
SB_MUTE
R2800
2K
SCART JACK
JP2805
SC1_B+
L2809
CM2012FR10KT 
SCART_ADC_FILTER_L
Q2801
MMBT3904(NXP)
SCART JACK
E
B
C
D2808
20V
OPT
C2835
47pF
50V
SCART_ADC_FILTER
R2822
75
R2803
75
SCART JACK
R2832
10K
R2829
47K
SCART JACK
L2810
CM2012FR10KT 
SCART_ADC_FILTER_L
SC1_G+
D2807
20V
OPT
D2805
20V
SCART JACK
JP2813
R2836
10K
SCART JACK
R2817
3.9K
SCART JACK
L2806
CM2012FR10KT 
COMP_ADC_FILTER_L
C2831
47pF
50V
SCART_ADC_FILTER
JP2815
C2803
1000pF
50V
OPT
C2818
0.1uF
50V
SCART JACK
R2827
180
SCART JACK
JP2800
DTV/MNT_R_OUT
R2830
15K
SCART JACK
SC1_CVBS_IN
C2828
47pF
50V
COMP_ADC_FILTER
MMBT3904(NXP)
Q2803
OPT(EU_SCART mute)
R2847
2.2K
SCART JACK
AV_CVBS_DET
SCART1_Lout
JP2812
JP2806
R2815
22
SCART JACK
DTV/MNT_L_OUT
Q2806
MMBT3906(NXP) 
SCART JACK
1
2
3
COMP_Pb+
R2855
10K
SCART JACK
C2810
1000pF
50V
D2801
20V
SCART JACK
C2830
47pF
50V
COMP_ADC_FILTER
C2809
100uF
16V
SCART JACK
R2811
75
SCART JACK
D2809
20V
OPT
C2836
47pF
50V
SCART_ADC_FILTER
D2804
20V
SCART JACK
R2843
220K
SCART JACK
MMBT3904(NXP)
Q2805
SCART JACK
C2806
1000pF
50V
SCART JACK
C2805
1000pF
50V
SCART JACK
FULL SCART
COMPONENT&CVBS
Rg
Rf
[SCART AUDIO MUTE]
SCART AMP
SCART / COMPONENT&CVBS
Gain=1+Rf/Rg
EAX65077401
2012.09.15
120927
OPT->APPLY
120927
OPT->APPLY
120927
OPT->APPLY
120927
OPT->APPLY
120927
OPT->APPLY
120927
OPT->APPLY
120927
OPT->APPLY
121107 OPT->APPLY
To solve EMS Issue
121107 OPT->APPLY
To solve EMS Issue
121107 OPT->APPLY
To solve EMS Issue
121107 OPT->APPLY
To solve EMS Issue
Page of 33
Display

Click on the first or last page to see other 22LN45XX / 22LN450U / 22LN457U (CHASSIS:LC31A / LD31T) service manuals if exist.

RANDOM: