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LG 22LQ630H Service Manual Download Page 15

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LGE Internal Use Only

Copyright © 

 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

4. Digital RF Trouble Shooting guide

5. Composite Video (Side AV) Trouble Shooting guide

Check RF cable & signal

Check tuner 5V power L3702

Y

Check IIC Signal

TU1003 Pin#3,4

Y

Check IF Signal

TU1003 Pin#10,11

Y

Check X201

and application circuit

Check IC404

Replace L3703

Replace IC3703

N

N

N

Replace IC101

N

Replace IC404

N

Y

Replace X201

Check input signal format.
Is it supported?

Y

Check AC cable for damage
For damage or open conductor

Y

Check JK1202
Can you see the normal waveform?

Y

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 because Main chip (Mstar) have some troubles.
After checking thoroughly all path once again, You should decide to replace Mstar or not.

Replace JK1202

N

Summary of Contents for 22LQ630H

Page 1: ...ODEL 42CQ610H 42CQ610H 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 13 BLOCK DIAGRAM 21 EXPLODED VIEW 22 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: ...t 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: ... 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: ...ion of Full Dynamic range and data one of R G B is fixed at 192 and the other two is lowered to find the desired value 3 Adj condition normal temperature Surrounding Temperature 25 5 ºC Warm up time About 5 Min Surrounding Humidity 20 80 5 3 2 Equipment 1 Color Analyzer CA 210 NCG CH 9 WCG CH12 LED CH14 2 Adj Computer During auto adj RS 232C protocol is needed 3 Adjust Remocon 4 Video Signal Gener...

Page 9: ... OK Sing check adj status of pre mode Cool Medium Warm 6 Remove probe and RS 232C cable to complete adj W B Adj must begin as start command wb 00 00 and finish as end command wb 00 ff and Adj offset if need 5 3 5 2 Manual adj method 1 Set TV in Adj mode using POWER ON 2 Zero Calibrate the probe of Color Analyzer then place it on the center of LCD module within 10cm of the surface 3 Press ADJ key E...

Page 10: ...select Tool option Model Tool 1 Tool 2 Tool 3 Tool 4 Tool 5 COMMERCIAL OPTION 42CQ610H UA 24576 8202 53257 2564 8448 114 5 7 Ship out mode check In stop After final inspection press In Stop key of the Adj R C and check that the unit goes to Stand by mode 6 GND and HI POT Test 6 1 GND HI POT auto check preparation 1 Check the POWER CABLE and SIGNAL CABE insertion condition 6 2 GND HI POT auto check...

Page 11: ... socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is lower than that of TV set it didn t work Otherwise USB data is automatically detected 3 Show the message Copying files from memory 5 Updating Completed The TV will restart automatically 6 If your TV is turned on check your updated version and Tool option If downloading version is more high...

Page 12: ...C LAN Port 10 4 2 Working procedure 10 4 2 1 Connection UTC 1000 LAN PC LAN Port UTC 1000 TOP1 Game port RJ21 TV 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 number...

Page 13: ...Check power connector and RL_ON signal OK N Replace Power Board Check Q409 application circuit Or replace Q409 N Replace Cable N 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 14: ...Analog RF Video Trouble Shooting guide Check RF cable signal Y 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 IC404 Replace L3703 Replace IC3703 N N N Replace IC101 N Replace IC404 N Y ...

Page 15: ... circuit Check IC404 Replace L3703 Replace IC3703 N N N Replace IC101 N Replace IC404 N Y Replace X201 Check input signal format Is it supported Y Check AC cable for damage For damage or open conductor Y Check JK1202 Can you see the normal waveform Y 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 ...

Page 16: ...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 17: ... AC cable for damage For damage or open conductor Y Check JK1104 Can you see the normal waveform 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 Replace JK1104...

Page 18: ...ining and service purposes 8 Analog RF Audio Trouble Shooting guide Check RF cable signal Check TU1003 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 19: ...open conductor Y Check JK1202 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 JK1202 JK1102 N Check Audio AMP...

Page 20: ...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 21: ...com MSP430F5419IPZR IC1602 24MHz JACK PACK JACK PACK at REAR at REAR SCL SDA_3 3V RF S7LR LGE105DB LF 1 IC101 RS 232C SVC S W Reset TDVJ H031F EXT_OUT I2C SCL SDA S_FLASH 8M bit MX25L8006EM2I 12G IC200 Power AMP TPA6011A4PWPRG4 IC1100 JK1100 JK6000 RJP_CTRL JK501 Pro Idom LGDT1129 IC1209 TS_CLK VALID SYNC 0 7 PM_TS_CLK VALID SYNC 0 7 TMMB H001P B LAN TV link CFG Game control TV link CFG Game contr...

Page 22: ...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 23: ...3 RESET T2 DQSL F3 DQSL G3 DQSU C7 DQSU B7 D M L E7 D M U D3 DQL0 E3 DQL1 F7 DQL2 F2 DQL3 F8 DQL4 H3 DQL5 H8 DQL6 G2 DQL7 H7 DQU0 D7 DQU1 C3 DQU2 C8 DQU3 C2 DQU4 A7 DQU5 A2 DQU6 B8 DQU7 A3 VREFCA M8 VREFDQ H1 ZQ L8 VDD_1 B2 VDD_2 D9 VDD_3 G7 VDD_4 K2 VDD_5 K8 VDD_6 N1 VDD_7 N9 VDD_8 R1 VDD_9 R9 VDDQ_1 A1 VDDQ_2 A8 VDDQ_3 C1 VDDQ_4 C9 VDDQ_5 D2 VDDQ_6 E9 VDDQ_7 F1 VDDQ_8 H2 VDDQ_9 H9 NC_1 J1 NC_2 J...

Page 24: ...7 4 5 7 2 5 1 R 0 7 4 1 W 8 1 R1556 PILLOW_OUT 220uF 25V C1502 F u 0 7 4 V 6 1 5 8 7 1 C 10uF 16V C1517 10uF 16V C1525 10K R2717 EFD3030 APPLIED FOR BPR T1501 2 6 5 7 8 9 11 12 1 3 5V_ST 3K R1540 3K R1536 5VD 47K R1544 47K R1546 47K R1533 47K R1545 22K R1550 2 2K R1551 5V_ST Pillow_POWER_MANAGE JK1500 CH_UP 3 2 NC 1 ON OFF 6 CH_DN 5 AUDIO 4 COM 4 7K R2772 0 1uF 50V C2707 2 2uF 50V C2713 L2700 PILL...

Page 25: ...I_CEC DDC_SDA_1 DDC_SCL_2 CK _HDMI1 0 R824 OPT 0 R815 OPT 0 1uF C1504 10uF 10V C1501 USB1_OCD SIDE_USB_DP 22uF 16V C1500 1 8W 2K 1 R1510 5V_USB USB1_CTL 1 8W 2K 1 R1509 4 7K OPT R1504 SIDE_USB_DM MLB 201209 0120P N2 120 ohm L1451 10K R1503 3 3V_Normal 47 R1500 CIS21J121 L1451 1 M A E R T S N W O D B S U G L C Z 5 0 3 S 4 0 U A 3 JK1450 USB_JACK 1 2 3 4 5 AP2191DSG EAN61849601 IC1500 3 IN_2 2 IN_1 ...

Page 26: ... RXB0 RXA4 RXA1 RXA3 RXBCK RXACK 0 1uF 16V C710 WAFER_FHD PANEL_VCC 120 WAFER_FHD L702 RXB4 10K BIT_SEL_LOW R709 RXA0 RXA0 RXBCK RXA2 RXB2 RXB4 RXACK 10K OPT R710 10uF 16V OPT C700 1000pF 50V C709 OPT RXA3 RXA2 RXB3 RXB1 3 3V_Normal RXB2 RXB3 SCAN_BLK2 RXB1 3 3K OPT R705 TF05 51S P703 WAFER_FHD 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...

Page 27: ... E B C 0 POWER_22_A_DIM R485 3 5V_ST 3 3V_Normal 0 POWER_24_GND R475 0 POWER_22_PWM_DIM R471 3 3V_Normal 10K R401 3 9K R496 PWM_PULL DOWN_3 9K 0 POWER_20_A_DIM R453 FM20020 24 P404 NORMAL_32 19 14 9 4 18 13 8 3 17 12 7 2 16 11 6 1 20 15 10 5 21 22 23 24 25 0 POWER_20_PWM_DIM R484 6 8K OPT R418 10K R427 PWM_DIM ERROR_OUT 0 1uF 50V C418 3 5V_ST 1K R419 0 POWER_23_GND R476 CIS21J121 L402 1 SMAW200 H2...

Page 28: ...0pF OPT C264 0 1 u F C299 OPT PC_L_IN PILLOW_SPK 014 AD22 DDC_SDA_1 D2 _HDMI1 BLM18PG121SN1D L206 0 1 u F C4036 0 1uF C273 CK _HDMI2 2 2uF C244 1K OPT R290 IF_N_MSTAR 4 7uF 10V C200 MODEL_OPT_2 SIDE_USB_DM 0 1 u F C4042 BLM18PG121SN1D L219 VDD33 33 R244 10 R217 0 047uF C206 AVDD2P5 68 R231 10uF C281 OPT MODEL_OPT_5 1 10V_VDDC 0 047uF C205 0 1uF C4062 0 047uF C225 KDS181 D200 68 R252 0 R298 AVDD_NO...

Page 29: ...2_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 1 _ A 1 T U O 41 OUT1A_2 42 PGND1A 43 BST1A 44 RESET 45 AD 46 GND_IO 47 CLK_I 48 VDD_IO 49 E P 3 3K R505 33pF 50V C509 0 1uF 50V C502 390pF 50V C532 0 1uF 50V C501 BLM18PG121SN1D L502 1uF 25V C529 3 3 OPT R507 22000pF 50V C527 SPK_L AUD_LRCK 10...

Page 30: ... 47pF 50V C1262 AV COMPONENT 75 R1243 AV COMPONENT D1245 OPT COMP2_L_IN 002 T12 PPJ238 01 JK1207 AV COMPONENT 5D GN2 O SPRING 6D GN2 E LUG 4D GN2 CONTACT 7E BL2 E LUG S 5E BL2 O SPRING 7F RD2 E LUG S 5F RD2 O SPRING_1 5G WH2 O SPRING 4H RD2 CONTACT 5H RD2 O SPRING_2 6H RD2 E LUG 6A YL1 E LUG 5A YL1 O SPRING 4A YL1 CONTACT 5B WH1 O SPRING 4C RD1 CONTACT 5C RD1 O SPRING 6C RD1 E LUG 10K R1211 AV COM...

Page 31: ...M 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 LD503 0 R1694 0 1uF 50V C1622 UART3_TX 2SC3875S ALY Q1610 B LAN E B C 3 5V_ST_PTC FRAM_SDA_3 5V 0 1uF C6101 0 01uF C1630 0 1uF 16V OPT C2601 OPT ZD2601...

Page 32: ... 50V C2192 10K R1789 MLB 201209 0120P N2 L1232 TS 7 001 AL17 0 1 u F 16V XMARK C2264 0 1 u F 16V C2216 0 1 u F 16V C2214 0 XMARK R2581 0 XMARK R2572 BLM18PG121SN1D XMARK L1253 0 0 1 u F C2188 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 01...

Page 33: ... 16V C3727 12V_C_MPI 0 RJ12_MPI R616 0 1uF 16V C3717 bLAN_POWER_MANAGE 016 N17 011 AF8 0 R1400 B LAN 3 3V_TU 100pF 50V C5006 18pF 50V C3713 TU_I2C_NON_FILTER 0 R1414 BLAN 1K R604 RJ12_MPI 47K R1893 B LAN TU_CVBS 1M R605 RJ12_MPI 0 1uF 16V C5016 OPT 220 TU_BUFFER R5006 BEXT_MPI_DIN 011 N15 0 1uF 16V C1788 AO3407A Q1804 B LAN G D S 10K R1882 B LAN 2SC3875S ALY Q603 RJ12_MPI E B C 1 2K R3740 TU_IIC_A...

Page 34: ... 010 K23 016 N14 016 Y25 016 AA4 S7_RX 001 AB18 001 AL23 TP1001 100 R1020 UART3_RX 010 N14 016 N14 016 Y25 016 AA4 2SC3875S ALY Q1000 E B C PTC_TX 016 X10 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 1K R1026 100 R1006 100 R1011 100 R1009 100 R1005 100 R1008 100 R1012 100 R1013 100 R1010 100 R1027 0 047uF C1007 220pF C1012 0 33uF C1...

Page 35: ...INAL2 5 T_SPRING 4 R_SPRING 7A B_TERMINAL1 6A T_TERMINAL1 3 E_SPRING EXT_SPK_L 009 H20 EXT_SPK_L 009 O20 1uF 10V OPT C1137 0 R1145 0 R1144 1uF 10V OPT C1138 PEJ027 04 JK1100 6B T_TERMINAL2 7B B_TERMINAL2 5 T_SPRING 4 R_SPRING 7A B_TERMINAL1 6A T_TERMINAL1 3 E_SPRING EXT_SPK_L 009 Z24 9 1K R1130 0 R1122 10uF 16V C1134 PILLOW_MUTE 001 AL22 016 AF16 014 AA23 1uF 10V C1136 2SC3875S ALY Q1116 E B C 10K...

Page 36: ...175 TACT_KEY 1K R121 OPT S7_RX 22 AR101 RGB_DDC_SCL PCM_A 12 SPI_SDO 0 1uF C109 4 7K R127 PF_WE 3 3V_Normal 10K R156 PCM_5V_CTL PWM1 PCM_A 1 MODEL_OPT_0 PCM_A 3 PCM_CD DSUB_DET I2C_SCL RXB3 1K OPT R108 RXACK 22 AR104 PWM0 56 R148 1K R115 OPT 22 R137 PCM_A 4 1K R118 PM_TS_CLK PCM_WE PCM_IRQA PCM_CE TS_CLK PCM_REG F_RB PCM_CE RXB4 RXB4 RXB2 PCM_A 11 22 OPT R194 PCM_CD SPI_CS AMP_SCL 10K R176 PWM_LED...

Page 37: ...LB 201209 0120P N2 L1106 5 6B ZD1106 MLB 201209 0120P N2 L1110 5 6B ZD1103 5 6B ZD1101 1 R1108 5 1K 22 EYE_SENSOR R1177 0 R1102 12507WR 12L P1100 1 2 3 4 5 6 7 8 9 10 11 12 13 5 6B ZD1100 22 EYE_SENSOR R1178 5pF C1113 MLB 201209 0120P N2 L1109 0 R1100 OPT 20pF C1111 0 1uF C1109 5 6B ZD1102 MLB 201209 0120P N2 L1107 3 5V_ST OPT C1112 5 6B ZD1104 0 R1103 OPT 20pF C1114 0 1uF C1100 MLB 201209 0120P N...

Page 38: ...P 0 OPT 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 42LD6DDH UA 2011 12 01 Copyright ...

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