LG 26LQ630H Page 1 Service Manual Download

Page: 1 / 41

Printed in Korea

P/NO : MFL67406205(1202-REV00)

CHASSIS : LA1EY

MODEL : 26LQ630H

26LQ630H-UA

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

LCD TV

SERVICE MANUAL

North/Latin America

http://aic.lgservice.com

Europe/Africa

http://eic.lgservice.com

Asia/Oceania

http://biz.lgservice.com

Internal Use Only

Summary of Contents for 26LQ630H

Page 1: ...ODEL 26LQ630H 26LQ630H UA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LCD TV SERVICE MANUAL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ... LG Electronics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 6 TROUBLESHOOTING 14 BLOCK DIAGRAM 22 EXPLODED VIEW 24 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...inals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed m...

Page 4: ... 20 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety UL CSA IEC specification EMC FCC ICES IEC specification 4 General Specification No Item Specification Remark 1 Receiving System 1 ATSC NTSC M 2 Available Channel 1 VHF 02 13 2 UHF 14 69 3 DTV 02 69 4 CATV 01 135 5 CADTV 01 135 3 Input Voltage 1 AC 100 240V 50 60Hz Mark ...

Page 5: ...68 70 09 25 17 EGA Х 2 720 400 31 469 70 08 28 32 DOS O 3 640 480 31 469 59 94 25 17 VESA VGA O 4 800 600 37 879 60 31 40 00 VESA SVGA O 5 1024 768 48 363 60 00 65 00 VESA XGA O 6 1280 768 47 776 59 870 79 5 CVT WXGA Х 7 1360 768 47 712 60 015 85 50 VESA WXGA O DTV 1 720 480 31 47 60 27 027 SDTV 480P 2 720 480 31 47 59 94 27 00 SDTV 480P 3 1280 720 45 00 60 00 74 25 HDTV 720P 4 1280 720 44 96 59 9...

Page 6: ...t items can be also performed in Final Assembly if needed Both Board level and Final assembly adjustment items can be check using In Start Menu 1 Adjust Check Component 1080p and RGB PC Adjust will be calculated by 480i adjust value 3 2 Final assembly adjustment 1 White Balance adjustment 2 RS 232C functionality check 3 Factory Option setting per destination 4 Shipment mode setting In Stop 3 3 Etc...

Page 7: ...ed and ADC RGB is completed If ADC calibration is failure ADC RGB Fail is displayed 3 If ADC calibration is failure after rechecking ADC pattern or condition retry calibration 5 2 EDID DDC Download EDID PCM 5 2 1 Overview It is a VESA regulation A PC or a MNT will display an optimal resolution through information sharing without any necessity of user input It is a realization of Plug and Play 5 2 ...

Page 8: ...r training and service purposes 5 2 4 EDID DATA 1 22LQ630H FHD HDMI1_EDID table CHECK SUM 02 04 HDMI2_EDID table CHECK SUM 02 F4 Analog RGB EDID table CHECK SUM EC 2 26 32LQ630H HD HDMI 1 EDID table CHECK SUM 5A 74 HDMI 2 EDID table CHECK SUM 5A 64 Analog RGB EDID table CHECK SUM 74 ...

Page 9: ...pattern is not available Color Analyzer Matrix should be calibrated using CS 1000 5 3 3 Equipment connection 5 3 4 Adjustment Command Protocol 1 RS 232C Command used during auto adj RS 232C COMMAND Explanation CMD DATA ID Wb 00 00 Begin White Balance adj Wb 00 ff End White Balance adj internal pattern disappears Ex wb 00 00 Begin white balance auto adj wb 00 10 Gain adj ja 00 ff Adj data jb 00 c0 ...

Page 10: ...is inner ON By selecting OFF you can adjust using RF signal in 204 Gray pattern Adj condition and cautionary items 1 Lighting condition in surrounding area Surrounding lighting should be lower 10 lux Try to isolate adj area into dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10cm and perpendicular of the module surface 80 100 3 Aging time After Aging Start Keep the ...

Page 11: ...es If Test is passed execute next process Hi pot test Remove A V CORD from A V JACK BOX 5 HI POT test Auto If Test is failed Buzzer operates If Test is passed GOOD Lamp on and move to next process automatically 6 3 Checkpoint 1 Test voltage GND 1 5KV min at 100mA SIGNAL 3KV min at 100mA 2 TEST time 1 second 3 TEST POINT GND Test POWER CORD GND and SIGNAL CABLE GND Hi pot Test POWER CORD GND and LI...

Page 12: ...turned on check your updated version and Tool option If downloading version is more high than your TV have TV can lost all channel data In this case you have to channel recover If all channel data is cleared you didn t have a DTV ATV test on production line After downloading TOOL OPTION setting is needed again 1 Push IN START key in service remote controller 2 Select Tool Option 1 and Push OK butt...

Page 13: ... LINK CFG Phone Jack UTC 1000 RF1 b_LAN RF IN 10 4 2 2 Power on JIG Switch on front of the JIG 10 4 2 3 Test Start UTC 1000 TOP2 JIG 11pin Connection 10 4 2 4 Checking b LAN MAC Address Check whether it is same their address numbers or not between B LAN Label and on the pc address numbers Checking JIG contents 1 Check whether displaying all Pass or not at the number 3 4 6 7 9 contents of UTC 1000 ...

Page 14: ...signal OK N Replace Power Board Check Q409 application circuit Or replace Q409 N Replace Cable N 2 No OSD Trouble Shooting guide Check P401 All Voltage Level 3 5V 12V 24V Y N Check IC1602 RESET and UPDATE pin Y Check X1600 Clock 32 768MHz Y Check IC1602 IIC Communication status Y Check IR input state of IC1602 57pin Y Re download PTC Micom Check power connector and RL_ON signal OK N Replace Power ...

Page 15: ...Analog RF Video Trouble Shooting guide Check RF cable signal Check TU1003 Pin7 Video output Y Check tuner 5V power L3702 Y Check tuner 3 3V power L3703 Y Check tuner 1 8V power IC3703 2pin 1 8V Y Check Mstar LVDS output Replace Tuner N Check IC406 Replace L3703 Replace IC3703 N N N Replace IC101 N Replace IC406 N Y Y ...

Page 16: ... circuit Check IC406 Replace L3703 Replace IC3703 N N N Replace IC101 N Replace IC406 N Y Replace X201 Check input signal format Is it supported Y Check AC cable for damage For damage or open conductor Y Check JK9901 Can you see the normal waveform Check the input of Mstar IC101 Measure waveform at C227 because it s more easy to check Can you see the normal waveform Y This board has big problem be...

Page 17: ...en conductor Y Check JK801 JK802 Can you see the normal waveform Y Check HDCP key NVRAM IC103 Power I2C signal Y Check the input of Mstar IC101 Measure waveform at R4024 R4025 because it s more easy to check Can you see the normal waveform Y This board has big problem because Main chip Mstar have some troubles After checking thoroughly all path once again You should decide to replace Mstar or not ...

Page 18: ...pen conductor Y Check JK801 JK802 Can you see the normal waveform Y Check HDCP key NVRAM IC103 Power I2C signal Y Check the input of Mstar IC101 Measure waveform at R4024 R4025 because it s more easy to check Can you see the normal waveform Y This board has big problem because Main chip Mstar have some troubles After checking thoroughly all path once again You should decide to replace Mstar or not...

Page 19: ...ining and service purposes 8 Analog RF Audio Trouble Shooting guide Check RF cable signal Check TU5001 Pin1 SIF output Y Check Audio AMP output L503 L504 L505 L506 Y Check IC501 Y Check C250 SIF signal to IC101 Replace Tuner N Replace L503 L504 L505 L506 Replace IC501 N N Replace IC101 Y ...

Page 20: ...open conductor Y Check JK9901 JK1102 Can you see the normal waveform Y Check the input of Mstar IC101 Measure waveform at C227 C244 C245 because it s more easy to check Can you see the normal waveform Y This board has big problem because Main chip Mstar have some troubles After checking thoroughly all path once again You should decide to replace Mstar or not Replace JK9901 JK1102 N Check Audio AMP...

Page 21: ...Is it supported Y Check AC cable for damage For damage or open conductor Y Check JK801 JK802 Can you see the normal waveform Y This board has big problem because Main chip Mstar have some troubles After checking thoroughly all path once again You should decide to replace Mstar or not Replace JK801 JK802 N Check Audio AMP output L503 L504 L505 L506 Replace L503 L504 L505 L506 N Y ...

Page 22: ...30F5419IPZR IC1602 24MHz JACK PACK JACK PACK at REAR at REAR SCL SDA_3 3V RF S7LR LGE2111 TE IC101 CPU Service SVC S W Reset TDVJ H031F EXT_OUT I2C SCL SDA S_FLASH 8M bit MX25L8005M2I 15G IC200 Power AMP TPA6011A4PWPRG4 IC1100 JK1100 JK501 Pro Idom LGDT1101 IC1209 TS_CLK VALID SYNC 0 7 PM_TS_CLK VALID SYNC 0 7 TMMB H002F TV link CFG Game control TV link CFG Game control Audio L R PC Audio P1103 JK...

Page 23: ...3V_Normal B LCD PANEL USB DC DC AOZ1051PI IC401 B 12V FET AO3407A Q409 PANEL_VCC B PANEL_CTL B EEPROM IC103 4 NAND Flash IC102 VDD33_DVI VDD33 AU33 AVDD_DMPLL B B B B B B B AU25 AVDD2P5 AVDD25_PGA EEPROM IC801 2 IC1105 B B LAN TMMB H002F TU1003 5V_BLAN_TU B Regulator AZ1117 IC3703 1 2V 1 8V_TU HALF_NIM 3 3V_TU B Current Lim AP2191 IC1450 B 26 PSU 3 5V 3 0A 12V 3 1A 24V 4 0A 26 PSU 3 5V 3 0A 12V 3 ...

Page 24: ...cal parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFET...

Page 25: ...8 AB22 PCMDATA 3 GPIO120 AE20 PCMDATA 4 GPIO119 AA15 PCMDATA 5 GPIO118 AE21 PCMDATA 6 GPIO117 AB21 PCMDATA 7 GPIO116 Y15 PCMADR 0 GPIO125 W20 PCMADR 1 GPIO124 V20 PCMADR 2 GPIO122 W22 PCMADR 3 GPIO121 AB18 PCMADR 4 GPIO99 AA20 PCMADR 5 GPIO101 AA21 PCMADR 6 GPIO102 Y19 PCMADR 7 GPIO103 AB17 PCMADR 8 GPIO108 Y16 PCMADR 9 GPIO110 AB19 PCMADR 10 GPIO114 AB20 PCMADR 11 GPIO112 AA16 PCMADR 12 GPIO104 A...

Page 26: ... DDCDD_CK GPIO29 U6 HOTPLUGD GPIO22 P5 CEC GPIO5 R4 HSYNC0 P2 VSYNC0 R3 RIN0P N2 RIN0M P3 GIN0P N3 GIN0M N1 BIN0P M3 BIN0M M2 SOGIN0 M1 HSYNC1 V2 VSYNC1 V3 RIN1P U3 RIN1M U2 GIN1P T1 GIN1M T2 BIN1P R2 BIN1M R1 SOGIN1 T3 HSYNC2 AA2 RIN2P Y2 RIN2M AA3 GIN2P W2 GIN2M Y3 BIN2P V1 BIN2M W3 SOGIN2 W1 CVBS0 AA8 CVBS1 Y4 CVBS2 W4 CVBS3 AA5 CVBS4 Y5 CVBS5 AA4 CVBSOUT0 Y6 CVBSOUT1 AA1 VCOM AB4 VIFP AC4 VIFM...

Page 27: ... C488 L413 FB_CORE 3 3V_Normal 1 16W 27K 1 R442 0 1uF 16V C431 3 5V_ST 10uF 10V C461 1 5V_DDR BLM18PG121SN1D L420 3 5V_ST 0 1uF 16V C476 1 16W 4 3K 1 R457 560pF 50V C467 10K R433 22uF 10V C472 THERMAL AP7173 SPG 13 HF DIODES IC407 3 VCC 2 PG 4 EN 1 IN 5 GND 6 SS 7 FB 8 OUT 9 EP 3 3V_Normal 10K R464 3 5V_ST 5V_Normal 2 2K R461 10K R497 OPT THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPEC...

Page 28: ...Y 1000pF 50V C2406 12507WR 15L P2402 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 AMOTECH 5 6V D2401 18pF 50V OPT C906 0 1uF C2401 47K R2426 18pF 50V OPT C907 100pF 50V C2407 3 3V_Normal 5 6V D2405 BLM18PG121SN1D L2401 JP2410 BLM18PG121SN1D L2404 FRONT_USB_DM FRONT_USB_DP 0 Front_USB R2450 0 Front_USB R2451 0 1uF C2432 Front_USB MLB 201209 0120P N2 120 ohm L2410 Front_USB USB_OCD2 3 3V_Normal AP2191DSG ...

Page 29: ... 44 45 46 47 48 49 50 51 52 0 R707 LVDS_51PIN_GND SCAN_BLK2 RXA2 0 1uF 16V C710 WAFER_FHD 1000pF 50V C709 OPT RXB1 RXB2 RXBCK 10K BIT_SEL_LOW R709 RXB2 3 3K OPT R705 3 3V_Normal MDS61887706 13T_GAS GAS6 MDS61887706 13T_GAS GAS2 MDS61887706 13T_GAS GAS4 MDS61887706 13T_GAS GAS5 MDS61887706 GAS3 13T_GAS MDS61887706 13T_GAS GAS1 MDS61887706 13T_GAS GAS7 MDS61887704 11T_GAS GAS2 4 MDS61887704 11T_GAS ...

Page 30: ... IC801 1 3 A2 2 A1 4 VSS 1 A0 5 SDA 6 SCL 7 WP 8 VCC R1EX24002ASAS0A HDMI_2_RENESAS IC802 1 3 A2 2 A1 4 VSS 1 A0 5 SDA 6 SCL 7 WP 8 VCC AT24C02C SSHM T IC801 HDMI1_ATMEL_E type 3 A2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC AT24C02C SSHM T IC802 HDMI2_ATMEL_E type 3 A2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC D804 OPT GND CEC_REMOTE_S7 0 R855 10K R856 OPT GND 68K R854 OPT HDMI_CEC AVRL161A1R1NT OPT D80...

Page 31: ... 16V C1129 0 OPT R1120 SUB_MUTE 001 AB13 009 R25 1K R1119 0 OPT R1121 1uF 10V C1133 10K OPT R1129 100 OPT R1126 3 3K R1125 4 7K R1132 OPT 1K R1124 4 7K R1131 100 R1128 CB3216PA501E L1100 5V_Normal 100 R1123 1uF 10V C1136 5V_Normal EXT_SPK_L 009 X24 10uF 16V C1134 EXT_SPK 002 V10 TPA6011A4PWPRG4 IC1100 3 PVDD_1 2 ROUT 4 RHPIN 1 PGND_1 6 RIN 5 RLINEIN 7 VDD 8 LIN 9 LLINEIN 10 LHPIN 11 PVDD_2 12 LOUT...

Page 32: ...X 010 N14 016 N14 016 Y25 016 AA4 0 R1042 0 R1044 0 R1045 PTC_TX 016 X9 EXT_PTC_RESET 001 AE6 10K R1047 10K R1048 EXT_PTC_UPDATE 001 AE6 Update_SW 016 F22 3 5V_ST 47K R1046 47K R1049 KJA PH 0 0177 EAG61030001 P1000 3 DETECT 4 L 5 GND 1 R 10K R1050 0 R1051 0 R1052 1K R1053 0 R1054 10K R1055 5V_ST 0 R1056 3 5V_ST 3 5V_ST RS232_TX 010 N16 RS232_RX 010 N15 RS232_TX_5V 010 V26 RS232_RX_5V 010 V24 RS232...

Page 33: ...N_IR_IN_MODEM 016 AN12 3 3V_Normal 220 R617 RJ12_MPI 47K R1880 B LAN 5 6V D1402 OPT 0 R1415 B LAN 0 R5034 22uF 10V C3715 3 3V_TU BEXT_Game_Control_Latch 011 N14 1W 200 R1471 B LAN 220pF C600 RJ12_MPI 0 1uF 16V C3725 3 3V_TU 5V_ST COIL R3735 1 TU_I2C_FILTER BEXT_5V 1uF 10V C1802 B LAN RJ12_MPI_DIN 016 AI8 0 RJ12_MPI R614 0 1uF 16V C1412 B LAN 30V D1408 OPT 3 3V_TU 623PU 6 FS B JK1401 1 2 3 4 5 6 7 ...

Page 34: ...M18PG121SN1D XMARK L1253 TS 0 001 AL17 TS_CLK 001 AL17 0 1 u F 16V C2203 XMARK_1 8V 10K R1788 0 1 u F 16V C2187 10K R2422 0 1 u F 16V C2202 0 1 u F 16V C2217 0 1 u F 16V C2218 BLM18PG121SN1D XMARK L1252 0 LGDT1129 R2582 MLB 201209 0120P N2 L1231 BLM18PG121SN1D XMARK L1255 0 XMARK R2583 0 1 u F 16V C2205 1K R2403 4 7uF 16V C2186 0 1 u F 16V C2194 0 1 u F 16V C2204 TS 2 001 AL17 0 1 u F 16V C2206 3 ...

Page 35: ...1 4W 10 5 R1553 GND 200 1 1 10W R1555 4 7K R2702 GND 12VDC_1 014 I6 014 N18 0 1uF C2704 12VD TPA3124D2PWPR IC2700 3 PVCCL_2 2 SD 4 MUTE 1 PVCCL_1 6 RIN 5 LIN 7 BYPASS 8 AGND_1 9 AGND_2 10 PVCCR_1 11 VCLAMP 12 PVCCR_2 13 PGNDR_1 14 PGNDR_2 15 ROUT 16 BSR 17 GAIN1 18 GAIN0 19 AVCC_1 20 AVCC_2 21 BSL 22 LOUT 23 PGNDL_1 24 PGNDL_2 5VD 014 D10 014 H13 014 L10 014 U28 5VD 014 D10 014 L10 014 U28 014 AK1...

Page 36: ...1 P3 6 UCB1STE UCA1CLK 42 P3 7 UCB1SIMO UCB1SDA 43 P4 0 TB0 44 P4 1 TB1 45 P4 2 TB2 46 P4 3 TB3 47 P4 4 TB4 48 P4 5 TB5 49 P4 6 TB6 50 P4 7 TBCLK SMCLK 51 P5 4 UCB1SOMI UCB1SCL 52 P5 5 UCB1CLK UCA1STE 53 P5 6 UCA1TXD UCA1SIMO 54 P5 7 UCA1RXD UCA1SOMI 55 P7 2 TBOUTH SVMOUT 56 P7 3 TA1 2 57 P8 0 TA0 0 58 P8 1 TA0 1 59 P8 2 TA0 2 60 P8 3 TA0 3 61 P8 4 TA0 4 62 VCORE 63 DVSS2 64 DVCC2 65 P8 5 TA1 0 66...

Page 37: ...C18 A_DDR3_DQSU B18 A_DDR3_DQSUB A18 A_DDR3_DQML E15 A_DDR3_DQMU A21 A_DDR3_DQL 0 D17 A_DDR3_DQL 1 G15 A_DDR3_DQL 2 B21 A_DDR3_DQL 3 F15 A_DDR3_DQL 4 B22 A_DDR3_DQL 5 F14 A_DDR3_DQL 6 A22 A_DDR3_DQL 7 D15 A_DDR3_DQU 0 G16 A_DDR3_DQU 1 B20 A_DDR3_DQU 2 F16 A_DDR3_DQU 3 C21 A_DDR3_DQU 4 E16 A_DDR3_DQU 5 A20 A_DDR3_DQU 6 D16 A_DDR3_DQU 7 C20 B_DDR3_A 0 B23 B_DDR3_A 1 D25 B_DDR3_A 2 F22 B_DDR3_A 3 G22...

Page 38: ... R1300 SPI_CS 4 7K R1303 OPT 0 1uF C1200 3 3V_Normal 3 3V_Normal KRC103S Q1300 OPT E B C 3 3V_Normal 10K R1302 OPT 33 R1304 SPI_SDO SPI_SDI MX25L8006EM2I 12G IC200 S_FLASH_MAIN_MACRONIX 3 WP 2 SO SIO1 4 GND 1 CS 5 SI SIO0 6 SCLK 7 HOLD 8 VCC W25Q80BVSSIG S_FLASH_MAIN_WINBOND IC200 1 3 WP IO2 2 DO IO1 4 GND 1 CS 5 DI IO0 6 CLK 7 HOLD IO3 8 VCC 23 S f l a s h S6500 Saturn7LR LA1EY 2 0 1 1 0 8 1 6 Co...

Page 39: ...9914 10K R9911 470K R9905 BLM18PG121SN1D L9901 BLM18PG121SN1D L9903 10K R9913 12K R9916 ADMC5M03200L_AMODIODE 5 6V D9904 BLM18PG121SN1D L9902 ADUC30S03010L_AMODIODE 30V D9901 100pF 50V C9905 75 R9907 100pF OPT C9907 100pF C9901 470K R9906 ADMC5M03200L_AMODIODE 5 6V D9903 ADMC5M03200L_AMODIODE 5 6V OPT D9902 3 3V_Normal 1K R9915 AV_CVBS_DET AV_CVBS_IN AV_R_IN AV_L_IN 31 AV1 AV jack SIDE CVBS PHONE ...

Page 40: ...GND_PLL 2 AVDD_PLL 3 DVDD_PLL 4 LF 5 DGND_PLL 6 GND_1 7 DGND 8 DVDD 9 SDATA 10 WCK 11 BCK 12 SDA 13 SCL 14 FAULT 15 MONITOR0 16 MONITOR1 17 MONITOR2 18 BST2B 19 PGND2B 20 OUT2B_1 21 OUT2B_2 22 PVDD2_1 23 PVDD2_2 24 PVDD2_3 25 OUT2A_1 26 OUT2A_2 27 PGND2A 28 BST2A 29 VDR2 30 GND_2 31 VCC_5 32 VDR1 33 BST1B 34 PGND1B 35 OUT1B_1 36 OUT1B_2 37 PVDD1_1 38 PVDD1_2 39 PVDD1_3 40 OUT1A_1 41 OUT1A_2 42 PGN...

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