DOWNLOAD LG 32LD450 / 32LD450N / 32LD455 / 32LD458 (CHASSIS:LD01B) Service Manual ↓ Size: 5.39 MB | Pages: 44 in PDF or view online for FREE

Model
32LD450 32LD450N 32LD455 32LD458 (CHASSIS:LD01B)
Pages
44
Size
5.39 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ld450-32ld450n-32ld455-32ld458-chassis-ld01b.pdf
Date

LG 32LD450 / 32LD450N / 32LD455 / 32LD458 (CHASSIS:LD01B) 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.
EN2
R644
3.6K
VCC_LCM
(+3.3V)
C649
1uF
50V
VCC_LCM
(+3.3V)
PANEL_VCC
(+12V)
C603
0.1uF
50V
VCOMLFB
C636
1uF 50V
C643
0.1uF
50V
C637
0.1uF
50V
PANEL_VCC
GCLK2_I
GSP/GVST_I
GCLK4
R667
0
GIP
RXD3-
C632
1uF
50V
VCOM
C642
1uF
50V
VGL_I
GSC/GCLK3_I
C601
0.1uF
50V
VCC_LCM
(+3.3V)
GMA12
GMA7
VDD_EVEN
VCOM_FB0
R666
0
GIP
R607
7.5K
R625
100
GIP
D602
KDS226
A
AC
C
RXD4-
RXA4-
VGL
(-5V)
VDD_LCM
(+16V)
DISCHG
C666
15pF
50V
C634
0.1uF
50V
GIP
VGL
(-5V)
C657
22uF
25V
GVDD_ODD_I
GVDD_ODD
VGL_FB
R664
0
GIP
GMA6
C641
150pF
50V
C669
15pF
50V
OPT
VGI_N
C671
15pF
50V
OPT
R601
1K
NON_GIP
RXA3-
GSP/GVST_I
RXD4+
C663
22uF
25V
HVDD
VCC_LCM
(+3.3V)
SOE
GMA13
R659
0
VGI_P
C668
15pF
50V
OPT
VDD_ODD
C618
1uF
50V
GIP
FLK
R655
0
GCLK5_I
D605
40V
MBRA340T3G
C646
0.1uF
50V
PANEL_VCC
(+12V)
VGL
(-5V)
R654
0
L602
22UH
2.8A
AMP_SDA
VST
VGH
(+25V)
GVDD_EVEN_I
VCOM_FB0
GMA16
R651
5.1K
C635
0.1uF
50V
GVDD_ODD_I
R665
0
GCLK2
C602
0.1uF
50V
R600
3K
GIP
D604
40V
MBRA340T3G
C672
15pF
50V
NON_GIP
RXA4+
C667
15pF
50V
NON_GIP
VGL
(-5V)
GCLK6_I
GMA3
R608
10
C630
10uF
16V
R661
0
R648
1K
GMA4
VGH_FB
C673
15pF
50V
OPT
FLK
R602
1K
NON_GIP
VCC_LCM
(+3.3V)
C670
15pF
50V
OPT
AMP_SCL
VCOM
GCLK4_I
C644
0.1uF
50V
RXDCK+
GVDD_EVEN
C611
1uF
50V
GIP
R606
20K
R662
0
GOE/GCLK1_I
VDD_LCM
(+16V)
VCOML
GMA15
C640
1uF
50V
POL
R647 2.2
R646
0
GIP
VGL_FB
VGH
(+25V)
R642
10K
GIP
C665
15pF
50V
GVDD_EVEN_I
R663
0
GIP
VDD_LCM
(+16V)
C674
15pF
50V
OPT
R653
0
GIP
D603
KDS226
A
AC
C
C675
15pF
50V
NON_GIP
VCOMR
VGH_FB
VCOMRFB
VGH
(+25V)
C600
OPT
OPT
C628
OPT
OPT
C629
OPT
OPT
C655
OPT
OPT
R649
OPT
OPT
C654
22uF
25V
R619
18K
R668
18K
C648
22uF
10V
R634
0
R660
0
R617
0
R645
0
OPT
R615
0
GIP
R614
0
GIP
R628
3.3K
GIP
R618
10
1/8W
R669
33
R670
33
R650
9.1K
1/8W
C652
22pF
50V
GCLK5_I
CLK5
GSC/GCLK3_I
CLK1
CLK4
CLK2
GOE/GCLK1_I
CLK3
GCLK6_I
GCLK2_I
GCLK4_I
CLK6
DISCHG
C627
1uF
50V
R604
10
NON_GIP
C605
15pF
50V
NON_GIP
DPM_A
RXDCK-
RXD3+
R685
0
NON_GIP
R642-*1
33K
NON_GIP
C625
27pF 50V
NON_GIP
C645-*1
560pF
50V
NON_GIP
C645
1000pF
50V
GIP
L601
22UH
2.8A
R656
360
PANEL_VCC
(+12V)
C653
22uF
25V
C634-*1
2200pF
50V
NON_GIP
R686
0
GIP
R687
0
NON_GIP
FLK
R689-*1
0
GIP
VDD_LCM
(+16V)
R688
33K
NON_GIP
R689
2.7K
NON_GIP
R690
0 GIP
R691
0 GIP
R692
0
NON_GIP
R693
0
NON_GIP
C621
0.47uF
25V
C615
1uF
50V
C677
0.047uF
NON_GIP
VGH
(+25V)
VGH_M
(+25V)
R605
47K
OPT
VGH
(+25V)
R633
10
GIP
R630
10
GIP
R603
OPT
OPT
R696
0
GIP
R698
1M
NON_GIP
C661
10uF
16V
REF
REF
R632
10K
GIP
R627
0
C617
1uF
50V
R629
10
GIP
R631
10
GIP
EN2
R613
1K
EN2
EN2
D606
100V
MMSD4148T1G
OPT
D607
100V
MMSD4148T1G
VDD_LCM
(+16V)
C639
2.2uF
16V
R616
10K
OPT
R652-*1
1K
NON_GIP
R652
0
GIP
R638
0
OPT
R631-*1
200
NON_GIP
R629-*1
200
NON_GIP
P700
12505WS-03A00
1
2
3
4
AMP_SCL
AMP_SDA
C651
1uF
10V
C606
1uF
50V
C626
1000pF
50V
GIP
R694
510 NON_GIP
R695
510
NON_GIP
C612
0.22uF
50V
GIP
R658
6.2K
OPT
C626-*1
470pF
50V
NON_GIP
R694-*1
0
GIP
R695-*1
0
GIP
VCC_LCM
(+3.3V)
H_CONV
R5266
3.3K
OPT
R5267
0
MINI_LVDS
IC603
MAX17113ETL+
MINI_LVDS
3
GND2
2
DRVP
4
SRC
1
THR
6
DRN
5
GON
7
MODE
8
DLP
9
FBP
10
GPGND
11
CTL
12
DRVN
13
AGND
14
FBN
15
REF
16
DEL1
17
FB2
18
BST
19
LX2
20
LX2
21
OUT
22
IN2
23
IN2
24
VIN
25
FSEL
26
EN1
27
DEL2
28
VL
29
EN2
30
PGND
31
PGND
32
LX1
33
LX1
34
SW1
35
SW0
36
FB1
37
COMP
38
PGOOD
39
CRST
40
AGND
IC600
TPS62110RSAR
MINI_LVDS
1
PGND_1
3
VIN_2
7
LBI
9
AGND
10
FB
11
GND_1
12
GND_2
13
PG
14
SW_1
15
SW_2
16
PGND_2
5
SYNC
8
VINA
6
LBO
4
EN
2
VIN_1
L600
6.8uH
MINI_LVDS
R635
910K
1%
42_FHD_60_LAMP
R636
510K
1%
42_FHD_60_LAMP
R641
27K
1%
42_FHD_60_LAMP
R637
27K
42_FHD_60_LAMP
R610
33K
1%
42_FHD_60_LAMP
R623
300
GIP
R624
300
GIP
R626
10
GIP
IC602
MAX17119DS
GIP
1
A9
3
A7
7
A3
9
A1
10
GON1
11
GOFF
12
GON2
13
Y1
14
Y2
15
Y3
16
Y4
17
Y5
18
Y6
19
Y7
20
Y8
21
Y9
22
YDCHG
23
GND
24
RE
25
FLK3
26
FLK2
27
FLK1
28
VSENSE
5
A5
8
A2
6
A4
4
A6
2
A8
29
EP[VGOFF]
R640
470K
1%
42_FHD_60_LAMP
R643
150K
42_FHD_60_LAMP
R609
150K
1%
42_FHD_60_LAMP
R611
100K
1%
42_FHD_60_LAMP
C610
10uF
C619
10uF
IC601
MAX9668ETP+
MINI_LVDS
1
SDA
3
DVDD
7
AVDD_AMP
9
NC_1
10
GMA1
11
GMA2
12
GMA3
13
GMA4
14
GMA5
15
GMA6
16
AVDD_2
17
NC_2
18
GMA7
19
GMA8
20
SCL
5
VCOM
8
AVDD_1
6
VCOM_FB
4
AGND_AMP
2
A0
21
EP[GND]
C633
4.7uF
50V
R612
10
C622
1uF
10V
C659
22uF
16V
R671
4.7K
R639
0
R657
6.2K
OPT
R672
0
MINI_LVDS
EN2
D608
40V
MBRA340T3G
TH700
47k-ohm
NCP18WB473F10RB
MINI_LVDS
C604
1uF
50V
C638
47uF
25V
R620
56K
1%
TCON_42_FHD_LAMP
R621
220K
5%
TCON_42_FHD_LAMP
R622
11K
5%
TCON_42_FHD_LAMP
C676
1uF
NON_GIP
[POWER Block]
10uF/25V(3216)
Slave Address : 0xE8h
 (AO Pin - GND)
[HVDD Block]
Vo = 1.153*(1+R1/R2)
[P-GAMMA Block]
[LEVEL Shift Block]
R2
CHECK Value!!
6.8uH/1.8A
(6x6x2mm)
GSP_R
GP2_Saturn7M
T-CON
Ver. 2.0
7
For P-Gamma Data Download
1uF/50V(2012)
4.7uF/50V(3216)
Change 100ohm -> 10ohm
R1
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.
DDC_SCL_3
R845
0
R831
0
IC801
AT24C02BN-10SU-1.8
HDMI_1
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
R842
0
DDC_SCL_3
R822
0
R885
4.7K
5V_HDMI_1
JP801
CK+_HDMI2
Q802
2SC3052
E
B
C
R817
0
CK+_HDMI3
D1-_HDMI4
D801
DDC_SCL_4
D1+_HDMI2
D2+_HDMI1
HPD3
5V_HDMI_1
Q803
2SC3052
E
B
C
HDMI_CEC
R841
100
R834
0
DDC_SCL_1
R895
1K
R897
1K
D1-_HDMI3
R873
10K
C801
0.1uF
16V
JP805
5V_HDMI_3
R810
0
R824
100
R807
0
R805
22
DDC_SCL_1
R886
4.7K
Q804
2SC3052
E
B
C
D0-_HDMI3
R838
1.8K
HPD4
D2+_HDMI2
DDC_SDA_3
JP808
D0+_HDMI2
IC803
AT24C02BN-10SU-1.8
HDMI_3
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
R848
0
DDC_SDA_4
R827
0
R801
3.3K
R844
0
JP807
D2-_HDMI2
5V_HDMI_2
5V_DET_HDMI_1
D0-_HDMI4
R877
22
JP812
R879
22
DDC_SCL_2
R896
1K
HPD1
R888
4.7K
C807
0.1uF
R847
0
D811
R823
0
CK-_HDMI2
D1+_HDMI3
D2-_HDMI1
IC802
AT24C02BN-10SU-1.8
HDMI_2
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D2-_HDMI3
D0+_HDMI1
R872
10K
+5V_Normal
D1-_HDMI2
Q801
2SC3052
E
B
C
D822
ENKMC2838-T112
A
1
C
A
2
R832
0
EDID_WP
D0-_HDMI2
DDC_SDA_4
R875
22
C809
0.1uF
DDC_SDA_2
R880
22
R843
0
R837
1.8K
R816
0
D2-_HDMI4
5V_HDMI_4
DDC_SDA_2
C808
0.1uF
HPD2
JK802
EAG59023302
HDMI_1
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
JP803
R811
0
R889
4.7K
HDMI_CEC
5V_HDMI_2
D1+_HDMI4
D802
R808
0
JP806
D1+_HDMI1
R890
4.7K
5V_HDMI_4
R862
10K
CK-_HDMI4
D0+_HDMI4
D823
ENKMC2838-T112
A
1
C
A
2
EDID_WP
R876
22
JP809
R802
3.3K
R849
0
D821
ENKMC2838-T112
A
1
C
A
2
CK+_HDMI4
D0+_HDMI3
R829
0
JP811
+5V_Normal
R806
22
R871
10K
R860
100
R820
0
R878
22
IC804
AT24C02BN-10SU-1.8
HDMI_SIDE
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
R846
0
CK-_HDMI1
C803
0.1uF
16V
DDC_SCL_4
JK804
EAG59023302
HDMI_3
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
R803
1.8K
R819
0
C802
0.1uF
16V
R852
0
JP804
EDID_WP
D0-_HDMI1
R894
1K
DDC_SDA_1
R835
3.3K
JP810
R836
3.3K
R809
0
R830
10K
5V_DET_HDMI_3
D2+_HDMI3
JP802
R818
0
D2+_HDMI4
HDMI_CEC
D824
ENKMC2838-T112
A
1
C
A
2
+5V_Normal
R826
22
5V_DET_HDMI_2
EDID_WP
R828
10K
R814
0
5V_HDMI_3
CK-_HDMI3
D1-_HDMI1
C804
0.1uF
16V
C806
0.1uF
R813
0
R833
0
R804
1.8K
HDMI_CEC
DDC_SDA_1
R884
4.7K
R815
100
R812
0
R821
0
JK801
EAG59023302
HDMI_2
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
D812
DDC_SCL_2
CK+_HDMI1
+5V_Normal
R850
0
5V_DET_HDMI_4
DDC_SDA_3
R874
10K
R864
10K
D826
AVRL161A1R1NT
OPT
GND
HDMI_CEC
CEC_REMOTE_NEC
C810
0.1uF
16V
GND
R893
10K
D825
R883
0
OPT
R825
22
R859
22
R851
22
R839
22
R840
22
R881
22
R882
22
R887
4.7K
R891
4.7K
JK803
EAG42463001
HDMI_SIDE
14
13
5
D1_GND
20
JACK_GND
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
BSS83
Q805
S
B
D
G
R892
68K
+3.5V_ST
R853
68K
CEC_ON/OFF
GND
R854
68K
R857
68K
OPT
R855
0
OPT
C805
0.1uF
16V
D803
AVRL161A1R1NT
OPT
D804
R856
10K
GND
BSS83
Q806
S
B
D
G
+3.3V_Normal
R858
0
CEC_REMOTE_S7
HDMI
GP2_Saturn7M
Ver. 1.2
SIDE_HDMI
$0.055
$0.253
HDMI_1
HDMI_3
HDMI_2
$0.055
HDMI EEPROM
$0.253
$0.253
$0.055
$0.253
$0.055
For CEC
8
Fiber Optic
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.
C1125
OPT
OPT
DSUB_R-
D1116
5.6V
OPT
SPDIF_OUT
2:X18
+3.3V_Normal
C1127
18pF
50V
R1142
10K
D1113
30V
JK1104
SPG09-DB-010
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
R1108
15K
DSUB_G-
D1117
5.6V
D1110
30V
EDID_WP
D1114
5.6V
OPT
DSUB_G+
C1108
100pF
50V
C1126
68pF
50V
OPT
D1111
30V
R1126
22
OPT
DSUB_HSYNC
C1128
18pF
50V
RGB_DDC_SCL
R1138
0
R1107
15K
R1136
0
R1103
470K
PC_R_IN
2:S16
R1140
4.7K
DSUB_R+
R1111
10K
D1101
5.6V
OPT
AMOTECH
C1117
0.1uF
16V
OPT
R1102
470K
DSUB_B-
IC1105
AT24C02BN-10SU-1.8
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
JK1103
JST1223-001
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
C1129
0.1uF
16V
R1139
4.7K
+3.3V_Normal
C1121
100pF
50V
R1147
1K
C1123
OPT
OPT
RGB_DDC_SDA
DSUB_B+
DSUB_VSYNC
D1109
30V
R1110
10K
C1107
100pF
50V
D1102
5.6V
OPT
AMOTECH
C1124
OPT
OPT
C1122
68pF
50V
OPT
+5V_Normal
R1143
22
D1115
ENKMC2838-T112
A1
C
A2
PC_L_IN
2:S16
IC1104
NL17SZ00DFT2G
OPT
3
GND
2
B
4
Y
1
A
5
VCC
R1134
0
DSUB_DET
D1112
30V
R1148
0
R1150
0
R1146
10K
R1127
0
C1131
0.1uF
16V
R1141
22
R1152
4.7K
OPT
Q1103
MMBT3904-(F)
E
B
C
HP_ROUT
2:X19
+3.5V_ST
R1130
10K
C1115
1000pF
50V
OPT
SIDE_HP_MUTE
C1116
1000pF
50V
OPT
+3.3V_Normal
SPK_R-_HOTEL
2:X19
SPK_R+_HOTEL
2:X19
HP_DET
R1155
1K
HP_LOUT
2:X19
Q1101
MMBT3904-(F)
E
B
C
Q1102
MMBT3904-(F)
E
B
C
C1119
10uF
16V
EXCEPT_CHINA_HOTEL_OPT
C1118
10uF
16V
EXCEPT_CHINA_HOTEL_OPT
Q1104
MMBT3904-(F)
E
B
C
R1125
1K
R1128
1K
R1133
75
R1135
75
R1137
75
JK1102
PEJ027-01
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
R1112
0
R1113
0
JK3301
KJA-PH-0-0177
3
DETECT
4
L
5
GND
1
R
Q1105
ISA1530AC1
E
B
C
Q1106
2SC3052
E
B
C
R1129
3.3K
COMMON AREA
GP2_Saturn7M
5.15 Mstar Circuit Application
PC AUDIO
RGB PC
SPDIF OPTIC JACK
COMMON AREA
Ver. 1.0
New Item Development
EARPHONE BLOCK
9
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.
C1101
0.33uF
C1105
0.1uF
R1157 0
R1156 0
R1124
100
NEC_RXD
C1106
0.1uF
+3.5V_ST
R1153 0
R1154 0
D1108
30V
CDS3C30GTH
IR_OUT
C1103
0.1uF
S7_TXD1
D1107
30V
CDS3C30GTH
R1114
4.7K
OPT
NEC_TXD
IC1101
MAX3232CDR
EAN41348201
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
C1104
0.1uF
R1109
4.7K
OPT
C1102
0.1uF
+3.5V_ST
S7_RXD1
R1123
100
R1122
0
OPT
JK1101
SPG09-DB-009
1
2
3
4
5
6
7
8
9
10
JP1121
JP1122
RS232C
RS232C 9PIN
Ver. 1.0
GP2_Saturn7M
10
Page of 44
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