LG 26LH2000 Service Manual
Have a look at the manual LG 26LH2000 Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 1069 LG manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
![Page 16
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.
DDR2SDDR_A[12] SDDR_A[11]
SDDR_A[10]
SDDR_A[9] SDDR_A[0]
SDDR_A[1]
SDDR_A[2]
SDDR_A[3]
SDDR_A[4]
SDDR_A[5]
SDDR_A[6]
SDDR_A[7]
SDDR_A[8] SDDR_A[1]
SDDR_A[10]
SDDR_A[12]
SDDR_A[7]
SDDR_A[0]
SDDR_A[2]
SDDR_A[4]...](http://img.usermanuals.tech/thumb/47/38658/w64_LG_26LH2000_Service_Manual-15.png "Page 16
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.
DDR2SDDR_A[12] SDDR_A[11]
SDDR_A[10]
SDDR_A[9] SDDR_A[0]
SDDR_A[1]
SDDR_A[2]
SDDR_A[3]
SDDR_A[4]
SDDR_A[5]
SDDR_A[6]
SDDR_A[7]
SDDR_A[8] SDDR_A[1]
SDDR_A[10]
SDDR_A[12]
SDDR_A[7]
SDDR_A[0]
SDDR_A[2]
SDDR_A[4]...")
![Page 18
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.
PCMCIACI_ADDR[4]
CI_DATA[7] CI_DATA[5]
CI_ADDR[5]
CI_DATA[0]
CI_DATA[4]
CI_ADDR[13]CI_ADDR[7]
CI_ADDR[12]
CI_ADDR[6]
CI_ADDR[14]
FE_TS_DATA[0-7]
CI_ADDR[0] CI_ADDR[2]
CI_ADDR[1] CI_ADDR[3]
CI_ADDR[11]...](http://img.usermanuals.tech/thumb/47/38658/w64_LG_26LH2000_Service_Manual-17.png "Page 18
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.
PCMCIACI_ADDR[4]
CI_DATA[7] CI_DATA[5]
CI_ADDR[5]
CI_DATA[0]
CI_DATA[4]
CI_ADDR[13]CI_ADDR[7]
CI_ADDR[12]
CI_ADDR[6]
CI_ADDR[14]
FE_TS_DATA[0-7]
CI_ADDR[0] CI_ADDR[2]
CI_ADDR[1] CI_ADDR[3]
CI_ADDR[11]...")
![Page 23
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.
TUNERFE_TS_DATA[5] FE_TS_DATA[6]
FE_TS_DATA[1]
FE_TS_DATA[0]
FE_TS_DATA[3] FE_TS_CLK
FE_TS_DATA[2] FE_TS_DATA[4] FE_TS_SYN
FE_TS_DATA[7]
FE_TS_VAL +5V_GENERAL
+3.3V_TUNER +5V_GENERAL
FE_BOOSTER_CTL
/FE_RESET...](http://img.usermanuals.tech/thumb/47/38658/w64_LG_26LH2000_Service_Manual-22.png "Page 23
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.
TUNERFE_TS_DATA[5] FE_TS_DATA[6]
FE_TS_DATA[1]
FE_TS_DATA[0]
FE_TS_DATA[3] FE_TS_CLK
FE_TS_DATA[2] FE_TS_DATA[4] FE_TS_SYN
FE_TS_DATA[7]
FE_TS_VAL +5V_GENERAL
+3.3V_TUNER +5V_GENERAL
FE_BOOSTER_CTL
/FE_RESET...")
![Page 26
Block Diagram Block Diagram
RGB COMPONENT
F-SCART
AV3
BUF_TS_CLK/ERR/SYN/DATA[0]
AV_CVBS_IN
DDR2 SDRAM
(1Gb)
IC300NAND Flash
HYNIX
IC102
USB
Digital amp
(NTP3100L)
IC701 COMP_Y/Pb/Pr
SC1_CVBS_IN
SC2_CVBS_IN
I2S DSUB_ R/G/B
Tuner
(TDFW-G235D1)
TU1000
LCD Panel
- 19/22/26/32/37/42LH2000
- 32/37/42/47LH3000
- 32/37/42/47LH4000
74LVC541A
Buffer
IC502
CI Slot
(P500)
74LCX244
Buffer
IC501
PCM_A[0:7]
FE_VMAIN
PCM_A[0:7]SDDR_D[0:15]
DDR2 SDRAM
(512Mb)
IC301
TDDR_D[0:15]SDDR_A[0:12]
Mstar S6LGE3368A...](http://img.usermanuals.tech/thumb/47/38658/w64_LG_26LH2000_Service_Manual-25.png "Page 26
Block Diagram Block Diagram
RGB COMPONENT
F-SCART
AV3
BUF_TS_CLK/ERR/SYN/DATA[0]
AV_CVBS_IN
DDR2 SDRAM
(1Gb)
IC300NAND Flash
HYNIX
IC102
USB
Digital amp
(NTP3100L)
IC701 COMP_Y/Pb/Pr
SC1_CVBS_IN
SC2_CVBS_IN
I2S DSUB_ R/G/B
Tuner
(TDFW-G235D1)
TU1000
LCD Panel
- 19/22/26/32/37/42LH2000
- 32/37/42/47LH3000
- 32/37/42/47LH4000
74LVC541A
Buffer
IC502
CI Slot
(P500)
74LCX244
Buffer
IC501
PCM_A[0:7]
FE_VMAIN
PCM_A[0:7]SDDR_D[0:15]
DDR2 SDRAM
(512Mb)
IC301
TDDR_D[0:15]SDDR_A[0:12]
Mstar S6LGE3368A...")
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. POWERPANEL_POWER +5V_ST +3.3V_ST+12V/+15V PANEL_CTL 1:AK10 +3.3V_AVDD_MPLL +3.3V_ST Q805 2SC3052 E B C Q804 2SC3052 E B C L803 BLM18PG121SN1D C803 0.1uF 16V C808 0.1uF 16V +5V_GENERAL +5V_USB_SIDE +12V/+15V R84756K 1% R852 9.1K C839 0.47uF 25V R853 12.4K1% IC808 MP2305DS3 SW 2 IN 4 GND 1 BS 5FB 6 COMP 7 EN 8 SS +3.3V +1.8V_AMP GND +5V_ST +1.8V_DDR GND L827 2.2uH L826 2.2uH C879 10uF 10V C878 10uF 10V C883 330pF C882 330pF R873 56000 R874 75K 5% POWER_ON/OFF1 1:AK11 +3.3V +1.2V_TUNERQ806 RSR025P03 S D G +3.3V_CI A_DIM C824 220uF 16V +5V_GENERAL +5V_ST ERROR_OUT +12V PWM_DIM PWM_DIM A_DIM_1 Q802 2SC3052 EB C +24V/+15V PWM_DIM ERROR_OUT +3.3V_ST +5V_ST INV_CTL PWM_DIM A_DIM_1 +3.3V_AVDD +3.3V C813 0.1uF 50V +3.3V C864 0.1uF 50V C854 0.1uF 50V 19~22 C855 2.2uF19~22 +12V/+15V Q807 19~22 S D G POWER_ON/OFF1 C862 0.01uF 50V +24V/+15V Q803 19~22E B C +12VL817 BLM18PG121SN1D L814 BLM18PG121SN1D L810 BLM18PG121SN1D 12V_PANEL +5V_USB_REAR R843 1.8K AMP_VCC L823 BLM18PG121SN1D 19~22 L809 BLM18PG121SN1D 26~52 L808 BLM18PG121SN1D 26~52 R871 8.2K 1% R809 10.5K 1% L819 22UHC860 5.6nF 50V IC803 AP1117E18G-13 2 OUT 3 IN 1ADJ/GND IC801 AP1117E33G-13 2 OUT 3 IN 1ADJ/GND R82610 1/10W1% 0.1uF C856 L813 3.6uH NR8040T3R6N +1.26V_VDDC +3.3V +5V_ST +3.3V_ST L821 BLM18PG121SN1D Q809 RSR025P03 S D G Q808 2SC3052 E B C +5V_ST PANEL_POWER L816 BLM18PG121SN1D OPT POWER_ON/OFF1 1:AK11 L807 CB3216UA121 L804 CB3216UA121 L806 CB3216UA121 L800 BLM18PG121SN1D 19~22 L802 BLM18PG121SN1D L805 BLM18PG121SN1D L812 BLM18PG121SN1D L824 BLM18PG121SN1D 19~22 IC805 MP2212DN3 IN 2 GND 4 BS 1 FB 5VCC 6 SW_1 7 SW_2 8 EN/SYNC R827 75K 1/8W 1% C847 4.7uF 16V C845 10uF 16V OPT C826 100uF 16V IC804 AZ1117H-1.2TRE1 1ADJ/GND 2 OUT 3 IN C884 0.1uF 16V P801 WAFER-ANGLE 19~22 1 2 3 4 5 6 7 8 9 10 11 C866 10uF C891 0.47uF 25V C837 22uF 10V OPT C838 22uF 10V C849 22uF OPT C843 22uF 10V C880 22uF 10V C876 22uF 10V C832 68uF 35V C821 68uF 35V OPT +5V_ST Q801 RT1P141C-T112 1 2 3 +3.3V_ST R807 33K OPT Q800 2SC3052 EB C POWER_ON/OFF1 +1.8V_DDR R810 0OPT R806 0 +3.3V_TUNER +5V_GENERAL IC809 AP1117E33G-13 2 OUT 3 IN 1ADJ/GND R808 0 22 INV_CTL R845 0 21 ERROR R875 0 21 GND R851 0 21 ADIM R812 0 22 GND R855 0 22 PDIM R858 0 20 INV_CTL 0 R841 22 ERROR R870 0OPT C848 0.01uF 25V C841 0.01uF 25V C816 0.1uF 16V C8170.1uF 16V 0.1uF C818 1 6 V OPT C820 0.1uF 16V C865 0.1uF 16V C890 0.1uF 16V C885 0.1uF 16V C802 0.1uF 16V C812 0.1uF 16V C811 0.1uF 16V C852 0.1uF 16V C825 0.1uF 16V C815 0.1uF 16V C827 0.1uF 16V C828 0.1uF 16V OPT C894 0.1uF 16V C807 0.1uF 16V OPT C805 0.1uF 16VC814 0.1uF 16V C863 0.1uF 16V C842 0.1uF 16V C859 0.1uF 16V C877 0.1uF 16V C 8 5 0 0 . 1 u F 1 6 V R814 100 R848 100K R831 10K 1/16W R804 10K OPT R83010K 1/16W OPT R829 10K 19~22 R802 10K R832 10K OPT R87210K R833 10K R823 10K OPT R822 10K R80010K R840 10K R864 10K OPT R842 10K R821 10K C804 1uF 6.3V C823 1uF 6.3V OPT C840 1uF 6.3V C829 1uF 6.3V R834 2.2K 19~22 22 R859 24 PDIM R824 22K 1% R825 22K 1% R839 22K R835 22K 19~22 R837 22K R857 22K R865 33K R856 4.7K R803 4.7K R815 6.8K OPT P800 FW20020-24S 26~52 19 . 14 . 9 . 4 . 18 . 13 . 8 . 3 . 17 . 12 . 7 . 2 . 16 . 11 . 6 . 1 . 20 12 15 . 10 . 5 . 2111 22 14 23 . 24 13 R818 3.3K C893 100uF16V C892 100uF 16V C810 100uF 16V C801 100uF 16V C800 100uF 16V C822 100uF 16V C806 100uF 16V C809 470uF 16V C868 0.1uF 50V C853 1uF25V R8011 R811 1 IC806 BD9150MUV 1 PGND2_1 3 PVCC_2 7 SW1_1 9 EN1 10 FB1 11 ITH1 12 AGND 13 NC 14 AVCC 15 ITH216 FB2 17 EN2 18 SW2_1 19 SW2_2 20 PGND2_2 5 PGND1_1 8 SW1_2 6 PGND1_2 4 PVCC_3 2 PVCC_1 R813 0 OPT L801 BLM18PG121SN1D 5V_PANEL +5V_ST R842-*122K R843-*1 2.7K R862 0 R805 4.7K C836 0.1uF 50VC858 22uF 16V C835 22uF 25V OPC_OUT R860 22 OPC Stand-by +3.3V 8 11 POWER +5V $0.048 50 mA 180 mA $0.05 450 mA FROM LIPS & POWER B/D +12V S6 core 1.26 volt $0.28 $0.048 R1 R2 NOT_OPC O X R860 OPC PANEL_POWER Vout=0.8*(1+R1/R2) Replaced Part Replaced Part R1Close to IC $0.07 C IN 465 mA @85% efficiencyClose to IC Placed on SMD-TOP Placed on SMD-TOP Replaced Part 1600 mA MAX 3A $0.24 4.9A 0.0150OHM 34MHZ R2 R1 R2 Vout=0.8*(1+R1/R2) Vout=0.923*(1+R1/R2) DEVELOPE $0.048 Replaced Part R859 O X 2009.03.25 EAX60686904 OPT 5V_PANEL_OPT AUO PSU 20 INV_CTL 21 ERROR LGD V3 NC 20 PIN OPC22 PDIM 24 PDIM 22 ERROR 22 PIN 21 ADIM 20 INV_CTL 21 PIN 22 ERROR LGD V4 24 PIN 20 INV_CTL 21 ADIM Sharp PSU20 INV_CTL 21 ERROR 22 GND 24 PDIM Copyright \251 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only
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. SCARTGND C1103 330pF 50V SCART1_DET C1124330pF 50V SC2_ID SC1_G SC1_CVBS_IN SC1_R_IN2:S14 C1123 330pF 50V SC1_ID 2:E16 REC_8 SC1_B SC1_L_IN C1108 220pF 50V OPT SC2_L_INSC2_R_IN SC1_FB C1107 100uF 16V SC2_CVBS_IN C1125 220pF 50V OPT C1102 330pF 50V SC1_R SCART2_DET C1122 100uF 16V +3.3V +3.3V SC_RE1 1:AJ19 REC_8AI8 Q1116 2SC3052 E B C SC_RE2 1:AJ19 +12V/+15V Q1117 2SC3052 E B C Q1118 2SC3052 E B C C1109 47uF 16V Q1111 2SC3052 EB C +12V/+15V DTV/MNT_VOUT R1188 51K 19~22 R1186-*1 13K 19~22 R1123 11K D1101 30V OPT D1102 30V OPT D1103 30V OPT D1104 30V OPT D1106 30V OPT D1109 30V OPT D1111 30V OPT D1112 30V OPT D1115 30V OPT D1118 30V OPT D1100 5.6V OPT D1105 5.6V OPT D1107 5.6V OPT D1108 5.6V OPT D1113 5.6V OPT D1114 5.6V OPT D1116 5.6V OPT D1117 5.6V OPT R1118 62K L1100 120-ohm L1101 120-ohm L1105 120-ohm L1106 120-ohm L1109 BLM18PG121SN1D Q1109 ISA1530AC1 @optio E B C C1141 0.1uF 50V C1139 0.1uF 50V C1104 10uF 35V Q1120 2SC3052 EB C L1104 BLM18PG121SN1D +12V/+15V C1144 0.1uF 50V FE_VSCART_OUT C1142 47uF 16V C1145 0.1uF 50V Q1119 ISA1530AC1 @optio E B C SCART1_Rout DTV/MNT_L_OUT SCART2_Lout DTV/MNT_R_OUT +12V/+15V IC1103 LM324D3 3 2 2 4 4 1 1 6 6 5 5 7 7 88 9 9 10 10 11 11 12 12 13 13 14 14 TV_L_OUT SCART2_Rout SCART1_Lout TV_R_OUT TV_L_OUT 2SC3052Q1129 DTV/MNT_R_OUT Q1131 RT1P141C-T112 1 2 3 2SC3052 Q1128 DTV/MNT_L_OUT 2SC3052 Q1127 Q1130 RT1P141C-T112 1 2 3 2SC3052 Q1126 TV_R_OUT TV_L_OUT 002:P7 TV_R_OUT 002:P7 DTV/MNT_R_OUTDTV/MNT_L_OUT R1179 680 19~22 C1126 0.1uF 50V R1185 0 R1187 0 R1182 0 0 R1117 R1105 0 0 R1133 R1134 0 C1105 0.1uF 16V C1113 0.1uF 16V C1132 0.1uF C1131 0.1uF R1147 10K R1108 10K R1121 10K R1128 10K R1154 10K R1153 10K R1110 10K R1178 10K R1148 10K R1127 12K R1111 12K R1112 12K R1129 12K R1186 12K 26~52 R1167 15K R1175 15K R1184 15K R1181 1K R1180 1K R1126 1K R11591K R1196 2.2K R1191 2.2K R1190 2.2K R1197 2.2K R1114 22 R11502K R1151 2K R1149 2K R1152 2K R1176 2K OPT R1146 33KR1155 33K R1156 33K R1145 33K C112933pF R1130 33pF C1128 33pF C1127 33pF R1122 4.7K R1124 4.7K R1162470 R1140 470 R1192 470K OPT R1195 470K OPT R1103 470K R1115 470K R1116 470K R1100 470K R1194 470K OPT R1193 470K OPT R1166 47K R1174 47K C1119 47pF 50V C1106 47pF 50V R1158 5.6K R1157 5.6K R1144 5.6K R1143 5.6K R1177 560 OPT R1139 75 R1109 75 R1106 75 R1104 75 R1102 75 R1101 75 R1137 75 C1120 OPT C1101 OPT C1121 OPT C1100 OPT JK1101 1 R_OUT 2 R_IN 3 L_OUT 4 GND 5 GND 6 L_IN 7 . 8 SC2_ID 9 . 10 . 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 23 23 22 22 JK1100 1 R_OUT 2 R_IN 3 L_OUT 4 GND 5 GND 6 LIN 7 B 8 SC_ID 9 . 10 . 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 23 23 22 22 R1136 75 R1107 75 R1131 390 R1113 390 R1161 120 R1138 120 C1134 10uF 16V C1133 10uF 16V C1135 10uF 16V C113610uF 16V L1107 BLM18PG121SN1D L1108 BLM18PG121SN1D L1102 BLM18PG121SN1D L1103 BLM18PG121SN1D C1110 1000pF 50V C1114 1000pF 50V C1112 1000pF 50V C1111 1000pF 50V R1125 62K R1132 11K R1135 0 R1164 0 R1163 0 R1160 0 +3.3V_ST D1120 ENKMC2838-T112 A1 C A2 +3.3V R1141 10K SB_MUTE D1119 ENKMC2838-T112 A1 C A2R1119 10K R1120 10K SB_MUTE SCART1_MUTE SCART2_MUTE C1143 10uF 35V D1110 5.6V OPT C1116 4700pF C1115 4700pF C1117 4700pF C1118 4700pF 9 11 SCART SCART2 PIN 8 Scart Audio Mute Audio Out Amp 2009.03.25 EAX60686904 Copyright \251 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only
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. TUNERFE_TS_DATA[5] FE_TS_DATA[6] FE_TS_DATA[1] FE_TS_DATA[0] FE_TS_DATA[3] FE_TS_CLK FE_TS_DATA[2] FE_TS_DATA[4] FE_TS_SYN FE_TS_DATA[7] FE_TS_VAL +5V_GENERAL +3.3V_TUNER +5V_GENERAL FE_BOOSTER_CTL /FE_RESET FE_TS_DATA[0-7],FE_TS_CLK,FE_TS_VAL,FE_TS_SYN FE_DEMOD_SDA +1.2V_TUNERQ1200 2SC3052 EB C FE_AGC_SPEED_CTL FE_TS_ERR Q1203 2SC3052 EB C +3.3V_TUNER FE_TUNER_SDA FE_SIF +5V_GENERAL FE_DEMOD_SCL FE_TUNER_SCL FE_TS_VAL IC1201 NL17SZ08DFT2G 3 2 4 1 5 FE_TS_ERR +3.3V_TUNER FE_TS_VAL_ERR GND FE_TS_VAL FE_VMAIN +5V_GENERAL L1202 MLB-201209-0120P-N2 L1201 MLB-201209-0120P-N2 L1204 MLB-201209-0120P-N2 C1212 47uF 16V R12380 R1241 200 R1240 200 R1239 1K OPT R1205 0 R1208 47 R1207 47 C1205 47pF 50V OPT C1206 47pF 50V OPT C1220 0.1uF16V C1215 0.1uF 16V Q1201ISA1530AC1 E B C Q1205 ISA1530AC1 E B C Q1202 ISA1530AC1 E B C C1209 68uF 10V R1223 0 C1222 0.01uF 25V C1208 0.1uF 16V OPT C12100.1uF 16V C1219 0.1uF 16V C1214 0.1uF 16V C12270.1uF 16V C1200 0.1uF 16V C1221 0.1uF 16V R1229 10 R1224 100 R1225 100K C1216 100pF 50V C1207 100pF 50V R1209 10K R1231 10K R1232 10K R1230 2.2K R1222 33 R1221 33 R1226 4.7K R1213 47 R1218 47 R1211 47 R1210 47 R1219 47 R1216 47 R1220 47 R1217 47 R1214 47 R1212 47 R1215 47 R124547 R1227 470 C1217 47pF 50V C1218 47pF 50V R1228 82 TU1200 TDFW-G235D TUNER1 ANT[5V] 2 BB[CTR] 3 GND_1 4 +B[5V] 5 NC_1 6 RF_AGC 7 TP[VT] 8 NC_2 9 GND_2 10 SDA_T 11 SCL_T 12 AIF_1 13 NC_3 14 GND 15 VIDEO 16 NC_4 17 SIF 18 SDA 19 SCL 20 RST 21 3.3V 22 1.2V 23 ERR 24 MCL 25 D7 26 D6 27 D5 28 D4 29 D3 30 D2 31 D1 35 SHIELD 32 D0 33 VAL 34 SYNC Tuner PLL : 0xC2 Analog Tuner : 0x86 Digital Tuner : 0x1E 10 11 TUNER OPTION : RF AGC DVB-CI DETECT DVB-T/C : 1.2V(MICRONAS demod) DVB-T : 1.8V(INTEL demod) 2009.03.25 EAX60686904 Copyright \251 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only
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. LVB_3MLVB_0M LVB_1P LVB_2M LVB_CKP LVB_CKM LVB_4P LVB_0P LVB_2P PANEL_POWER LVB_1M LVB_4M LVB_3P +3.3VSDA_SUB/AMP IR +5V_ST SCL_SUB/AMP KEY1 KEY2 +3.3V_ST LED_ON/LED_R R1318 100 R1317 100 C1314 0.1uF16V C1305 0.1uF C1310 0.1uF 16V 12PIN IR C1307 0.1uF C1306 0.1uF 16V 19~22/26LH2000 C1308 0.1uF 16V 19~22/26LH2000 C1312 1000pF 50V 8PIN IR C1315 1000pF 50V C1313 1000pF 50V 8PIN IR C1311 1000pF 50V 12PIN IR C1309 100pF 50V ZD1305 5.6V AMOTECH 8PIN IR ZD13035.6V AMOTECH ZD1300 5.6V AMOTECH 19~22/26LH2000 ZD13025.6V AMOTECH ZD1301 5.6V AMOTECH 19~22/26LH2000 ZD1306 5.6V AMOTECH 8PIN IR ZD1304 5.6V AMOTECH D1300 5.6V CDS3C05HDMI1 12PIN IR D1301 5.6V CDS3C05HDMI1 12PIN IR LVA_CKM LVA_3P LVA_0P LVA_4M LVA_2M LVA_0M LVA_1M LVA_2P LVA_1P LVA_3M LVA_CKP LVA_4P MEMC_RESET MEMC_SDA 1:L21 MEMC_SCL 1:L21 R13703.3K OPT R1379 0 LVDS_SEL_GND R1371 0 BIT_SEL_GND(8bit) R1366 22 R1365 22LVDS_SEL R1367 22 OPT R1373 0 OPT BIT_SEL C1303 220uF 16V OPT WARM_LED_ON/LED_W LVB_CKP LVB_CKM LVB_1M LVB_0M LVB_3M LVB_2M LVB_0PLVB_3P LVB_2P LVB_1P LVA_2P LVA_3P LVA_2M LVA_3M LVA_CKP LVA_CKM LVA_1M LVA_1P LVA_0M LVA_0P +3.3V OPC_EN OPC_OUT 1:V17;8:M8 PWM_DIM+3.3V +3.3V L1300 BLM18PG121SN1D L1301 BLM18PG121SN1D L1302 BLM18PG121SN1D 19~22/26LH2000 L1303 BLM18PG121SN1D L1304 BLM18PG121SN1D 19~22/26LH2000 L1305 BLM18PG121SN1D 8PIN IR L1306 BLM18PG121SN1D 8PIN IR L1307 BLM18PG121SN1D L1308 BLM18PG121SN1D 12PIN IR P1304 12507WS-12L 12PIN IR1 SCL 2 SDA 3 GND 4 KEY1 5 KEY2 6 5V_ST 7 GND 8 WARM_ST 9 IR 10 GND 11 3.3V 12 PWR_ON 13 IR_OUT +5V_ST +5V_ST Q1301 2SC3052 OPT E B C Q1300 2SC3052 OPT EB C P1305 12507WS-08L 8PIN IR1 KEY1 2 KEY2 3 GND 4 5V_ST 5 GND 6 IR 7 LED_B 8 LED_R 9 . R1322 100 12PIN IR R1321 100 12PIN IR R1325 4.7K12PIN IR C1302 0.1uF16V 12PIN IR R1319 4.7K R1320 4.7K C1300 0.1uF 16V R1313 OPT R1315 OPT R1312 OPT R1314 OPT R1305 100 C1301 1000pF 50V R1302 10K OPT R1300 22 OPT R130447K OPT R1303 47K OPT R1301 47K OPT P1301 TF05-51S FHD_LVDS_WAFER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 P1300 FF10001-30 LVDS_HD_19~22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 P1302 FF10001-30 LVDS_HD_26~42 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 R1378 3.3K LVDS_SEL_PULLUP R1372510 OPC P1303 12507WR-03L 19~22/26LH2000 1 KEY1 2 KEY2 3 GND 4 R1323 10012PIN IR R130610K 12PIN IR LVA_CKP LVB_CKP LVB_CKM LVB_0M LVA_CKM LVB_1P LVA_3P LVB_0P LVA_0P LVB_2P LVA_2MLVB_1M LVA_0M LVA_1M LVA_2P LVB_3P LVA_1P LVA_3M LVB_2M LVB_3M R1612 0 EXCEPT_22LU50 R1613 0 EXCEPT_22LU50 P1306 FF10001-30 LVDS_MNT_HD_19~22 1 2 3 4 5 6 7 8 9 101 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 930 31 11 11 MODULE&CTL Module CONTROL IR & LED close to wafer Zener Diode is V4 OPTION OPC_OUTPUT OPC_EABLE External VBR Small X 8BIT R1370 10BIT X R13710 R1378 HD O FHD R1379 XO 2009.03.25 EAX60686904 X X Copyright \251 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only
Block Diagram Block Diagram
RGB COMPONENT
F-SCART
AV3
BUF_TS_CLK/ERR/SYN/DATA[0]
AV_CVBS_IN
DDR2 SDRAM
(1Gb)
IC300NAND Flash
HYNIX
IC102
USB
Digital amp
(NTP3100L)
IC701 COMP_Y/Pb/Pr
SC1_CVBS_IN
SC2_CVBS_IN
I2S DSUB_ R/G/B
Tuner
(TDFW-G235D1)
TU1000
LCD Panel
- 19/22/26/32/37/42LH2000
- 32/37/42/47LH3000
- 32/37/42/47LH4000
74LVC541A
Buffer
IC502
CI Slot
(P500)
74LCX244
Buffer
IC501
PCM_A[0:7]
FE_VMAIN
PCM_A[0:7]SDDR_D[0:15]
DDR2 SDRAM
(512Mb)
IC301
TDDR_D[0:15]SDDR_A[0:12]
Mstar S6LGE3368A
(No-DVIX)
(IC100)
MP6211DH
USB Power
IC402
USB Power
FE_TS_DATA[0:7] CI_MDI[0:7]
H-SCART
SC1_R/G/B
SC1/2_L/R_IN,
FE_AM_AUDIO,AV_L/R_IN,
COMP_L/R_IN, PC_L/R_INFE_ VOUTDTV/MNT_VOUT
TDDR_A[0:12]
TPA6110A
IC700
Head
Phone
RS-232C
MAX3232CDR
IC403
SPDIF
SPDIF_OUT
DSUB_H/VSYNC
HP_L/ROUT
L/R
CI_TS_DATA[0:7]
PCM_D[0:7] CI_DATA[0:7]
CI_ADDR[0:7]AUDIO INDGB_TX/RX
HPD1/2/3, HDMI_CECTMDS[0:7] ( Data, Clock (+/-)) USB_DM/DP
EEPROM
AT24C512
(IC105)EEPROM
AT24C512
(HDCP)IC107
I2C
LVDS (10 bit)
Serial Flash
IC104
For TritonSerial Flash
IC103
For Boot
KIA7027
(IC101)
Voltage Detector
74LX1G14C
(IC108)
Schmitt Trigger
Reset
5V_HDMI_1/2/3
HDMI
1/2/3
Block diagram
Main Block
37 GIP Block Diagram37 GIP Block Diagram TCON with FRC MST7327N IC101 M+S T-Con Block SPI_CZ/CK & DI/DODDR_A_D[0:15] DDR2 SDRAM (512MB / 533MHz) HYNIX IC201 DDR_B_D[16:31]DDR_A_A[0:12] DDR_B_A[0:12] Serial Flash W25X32VSSIG IC102DDR2 SDRAM (512MB / 533MHz) HYNIX IC202 Multi Channel DC/DC Converter TPS 65161 IC401 P-Gamma IC BUF16821 IC402 VCC VDD VGH VGL VCC VDD Level Shifter MAX17108 IC403 GVST GVDD_EVEN GVDD_ODD GCLK1~6 VGH VGL VGH VDD SOE POL Left mini-LVDS (8Bit)Right mini-LVDS (8Bit) LVDS (10Bit) FRC IICFRC Reset VCOMGAMMA FRC_3.3V FRC_1.8V FRC_1.26V DC/DC Converter BD9130 IC301 LDO SC4215 IC303 FRC_1.8V FRC_1.26V FRC_3.3V VCC LVDS (10Bit)From Main Board FRC IIC FRC Reset Panel 12VTo Left LCD PanelTo Right LCD Panel VST VDD_EVEN VDD_ODD CLK1~6 Shifted level (HIGH=VGH/Low=VGL) VCC VDD VGH VGL VST VDD_EVEN VDD_ODD CLK1~6 SOE POL VCOM GAMMA VCC VDD VGH VGL VST VDD_EVEN VDD_ODD CLK1~6 SOE POL VCOM GAMMA LVDS Wafer P 10 1 mini-LVDS Wafer P 40 1 Only for 37LH4000Block diagram *M+S : Main B/D + T-con B/D In different
42/47 Normal Block Diagram42/47 Normal Block Diagram TCON with FRC MST7327N IC101 SPI_CZ/CK & DI/DODDR_A_D[0:15] DDR2 SDRAM (512MB / 533MHz) HYNIX IC201 DDR_B_D[16:31]DDR_A_A[0:12] DDR_B_A[0:12] Serial Flash W25X32VSSIG IC102DDR2 SDRAM (512MB / 533MHz) HYNIX IC202 Multi Channel DC/DC Converter TPS 65162 IC401 P-Gamma IC BUF16821 IC402 VCC VDD VGL VCC VDD GSP GSC GOE SOE POL VCOMGAMMA DC/DC Converter BD9130 IC301 LDO SC4215 IC303 FRC_1.8V FRC_1.26V FRC_3.3V VCC VGHM Left mini-LVDS (8Bit) Right mini-LVDS (8Bit) LVDS (10Bit)FRC IICFRC ResetFRC_3.3V FRC_1.8V FRC_1.26V LVDS Wafer P 10 1LVDS (10Bit) FRC IIC FRC Reset Panel 12V mini-LVDS Wafer P 40 1 To Left LCD PanelTo Right LCD Panel VCC VDD VGHM VGL GSP GSC GOE SOE POL VCOM GAMMA VCC VDD VGHM VGL GSP GSC GOE SOE POL VCOM GAMMA From Main Board Only for 42/47LH4000Block diagram M+S T-Con Block *M+S : Main B/D + T-con B/D
Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page Remarks 1 A. Video errorNo video/Normal audio 1 2 No video/No audio 2 3 Video error, video lag/stop 3 4 Color error 4 5Vertical/Horizontal bar, residual image, light spot, external device color error5 6 B. Power errorNo power 6 7Off when on, off while viewing, power auto on/off7 8 C. Audio errorNo audio/Normal video 8 9 Wrecked audio/discontinuation/noise 9 10 D. Function errorNo response in remote controller, key error, recording error, memory error10 11 External device recognition error 11 12 E. Noise Circuit noise, mechanical noise 12 13 F. Exterior error Exterior defect 13 First of all, Check whether there is SVC Bulletin in GCSC System for these model.
Normal audioY N Move to No video/No audio No video Normal audio Check Back Light On with naked eye OnY N Check Power Board 12v,5v etc. Normal voltageY N Replace Main BoardReplace T-con Board or module And Adjust VCOM OR Repair Power Board or parts Check Power Board 20V /12V or 24v output Normal voltageY Replace Inverter or module N Repair Power Board or parts End Always check & record S/W Version and White Balance value before replacing the Main Board Replace Main Board Re-enter White Balance value Precaution Established date Standard Repair Process Revised date 2008. 3 .05 1/13 LCD TV Error symptom A. Video error No video/ Normal audio First of all, Check whether all of cables between board is inserted properly or not.(Main B/D Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) 1