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LG 22LH4530, Service Manual

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LG 22LH4530 Service Manual Download Page 14

- 14 -

LGE Internal Use Only

Copyright  © 

  LG Electronics. Inc. All right reserved. 

Only for training and service purposes

2. No Picture

Replace Cable

N

Module Back Light On?

Check IC700 & Q700

Replace LED Driver IC or FET

Y

N

N

Check Panel Power 5V (P402 #01)

Check IC503 Output 5V

Replace IC503 &

Recheck

Y

N

Check Panel input Clock

P402 (#10, #11, #22, #23 )

Check IC300

Repair Main B/D

Y

N

Check FFC Cable for Damage or 

Open Conductors

Check LED Driver Output

(C706)

Replace T-Con Board or Module

Y

Check IC300

Replace Main SOC

N

Check WLED_ENABLE High?

Y

Summary of Contents for 22LH4530

Page 1: ...Internal Use Only P NO CHASSIS MODEL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL SERVICE MANUAL MFL69169511 1601 REV00 22LH4530 22LH4530 PU LU60A LED TV ...

Page 2: ...c All right reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 TROUBLE SHOOTING 13 BLOCK DIAGRAM 17 EXPLODED VIEW 18 SCHEMATIC CIRCUIT DIAGRAM APPENDIX ...

Page 3: ... 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 metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the ...

Page 4: ...n your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge b...

Page 5: ...e solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced...

Page 6: ... 2 Demanded other specification Safety UL EMI FCC NOTE Specifications and others are subject to change without notice for improvement 4 Model general specification No Item Specification Remarks 1 Market AMERICA CANADA MEXICO LH4530 series is US only MT48x Series is Mexico only 2 Receiving system ATSC NTSC M 64 256 QAM 3 Available Channel VHF 2 13 UHF 14 69 CATV 1 135 DTV 2 69 CADTV 1 135 4 Interfa...

Page 7: ...HDTV 1080P 9 1920 1080 56 250 50 148 5 HDTV 1080P 10 1920 1080 67 43 67 5 59 94 60 148 35 148 50 HDTV 1080P No Resolution H freq kHz V freq Hz Pixel clock MHz Remark 1 720 400 31 468 70 080 28 321 2 640 480 31 469 59 940 25 175 3 640 480 37 500 75 000 31 500 4 800 600 37 879 60 317 40 000 5 800 600 46 875 75 000 49 500 6 1024 768 48 363 60 004 65 000 7 1024 768 56 476 70 069 75 000 HDMI PC 8 1024 ...

Page 8: ...req Hz 1 720x480 15 730 59 940 720x480i 2 15 750 60 000 3 31 470 59 940 720x480p 4 31 500 60 000 5 720x576 15 625 50 000 720x576p 6 31 250 50 000 7 1280x720 44 960 59 940 1280x720p 45 000 60 000 8 37 500 50 000 9 1920x1080 33 720 59 940 1920x1080i 10 33 750 60 000 11 28 125 50 000 1920x1080p 12 56 250 50 000 13 67 432 59 940 14 67 500 60 000 Video Color Format YcbCr 444 422 xvYcc is not supported ...

Page 9: ...tab If display Can t Check connect computer jig and set 4 Click Read tab and then load download file XXXX bin by clicking Read 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message USB DOWNLOAD 1 Make New folder named LG_DTV and put ISP file bin in the folder 2 Put the USB Stick to the USB socket 3 3 Automatically detecting update file in USB Stick If your downloaded p...

Page 10: ...k 3 Write Serial number by use RS 232 4 Must check the serial number at the Diagnostics of SET UP menu 4 2 2 Method notice 1 Model Name Serial Number D L is using of scan equip ment 2 Setting of scan equipment operated by Manufacturing Technology Group 3 Serial number D L must be conformed when it is produced in production line because serial number D L is mandatory by D book 4 0 4 Check the model...

Page 11: ...g time After aging start keep the power on no suspension of power supply and heat run over 5 minutes Using no signal or full white pattern or the others check the back light on Auto adjustment Map RS 232C RS 232C COMMAND CMD ID DATA Wb 00 00 White Balance Start Wb 00 ff White Balance End Caution Color Temperature COOL Medium Warm One of R Gain G Gain B Gain should be kept on 0xC0 and adjust other ...

Page 12: ...heck EDID RGB HDMI is OK After check all Press the EXIT key of ADJ remote controll to go out SVC menu 4 6 Outgoing condition Configuration After all function test press IN STOP Key by SVC Remote controll And make Outgoing Condition 4 7 Ship out mode check In stop After final inspection if monitor is power only mode In stop process is started automatically when PC is turned off by command Check tha...

Page 13: ...ower Replace X300 N Check C500 Voltage Level 19V Check Power connector OK Replace Adapter Y N Y Check IC501 Output Voltage Level 3 3V Replace IC501 Recheck Y N Check X300 Clock 24MHz Replace IC405 Flash Memory Y Check IC503 Output Voltage Level 5V Replace IC503 Recheck Y N Check IC502 Output Voltage Level 1 15V Replace IC502 Recheck N Y ...

Page 14: ...Check IC700 Q700 Replace LED Driver IC or FET Y N N Check Panel Power 5V P402 01 Check IC503 Output 5V Replace IC503 Recheck Y N Check Panel input Clock P402 10 11 22 23 Check IC300 Repair Main B D Y N Check FFC Cable for Damage or Open Conductors Check LED Driver Output C706 Replace T Con Board or Module Y Check IC300 Replace Main SOC N Check WLED_ENABLE High Y ...

Page 15: ...c All right reserved Only for training and service purposes 3 No Video Digital TV Check RF Cable Y 1 Check RF IC L200 Power 3 3V 2 Check IC501 Output voltage 3 3V Replace IC501 Recheck Y N Check SCL SDA Line TU200 3 4 Replace TU200 or IC300 Main Scaler N ...

Page 16: ...or training and service purposes 4 No Video HDMI Replace Main Scaler IC300 Check input signal format Is it supported Check JK100 for proper connection or Damage Replace Connector Y N Check I2C Signal JK100 Re Download EDID Data Y N Y Check HDMI Cable for Damage or Open Connector Y ...

Page 17: ...ideo Encoder BM 28720MUV Di gital AM P I2S M CLK Audio DSP UART RX TX A ir Cable Can tuner S i de USB USB2 0 LVDS Con FHD A nalog Demod EEPROM 64K x 8bi t XTAL 24MHz TMDS 22inch 148 5MHz FHD 20 24 28inch 85 5MHz HD 22inch LVDS 2ch 1920x1080 60hz 175MHz 20 24 28inch LVDS 1ch 1366x768 60hz 82MHz DDR 800MHz MT48 28LH4530 For user 22 24LH4530 Service only MT48 28LH4530 Use Service only 22 24LH4530 Not...

Page 18: ...lated 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 Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE 300 200 120 900 540 910 831 541 832 400 510 LV1 A2 ...

Page 19: ... 7K C105 0 1uF 16V R104 14K R119 10K USB1_CTL USB1_OCD 3 3V 5V AR103 100 RS232C AR100 10K COMP AR104 47K AR105 5 1 AR106 5 1 JP107 JP109 JP110 D102 MMBD6100 A2 C A1 5V AR107 10K COMP 5V_HDMI_1 5V_HDMI_1 R101 100 R103 100 R112 2 2 R111 2 2 VA101 5 6V OPT VA104 5 6V COMP VA105 5 6V OPT VA106 5 6V OPT VA122 5 6V OPT VA113 5 6V COMP VA112 5 6V COMP VA107 5 6V OPT VA100 18V OPT VA103 18V OPT VA102 18V ...

Page 20: ...16V C209 20pF 50V TU_SDA C206 18pF 50V OPT C214 100uF 16V 105C OPT 3 3V_TU IF_AGC DIF_N R206 1K AR200 33 VA4S1UB1388 TU200 6 NC_2 7 IF N 8 IF P 9 SHIELD 1 SCL 2 SDA 3 B 3 3V 4 NC_1 5 IF_AGC C200 0 1uF 16V OPT C201 0 1uF 16V OPT L203 1 0ohm 3 3_TU 0 AR201 200 Tuner block 2 7 TUNER 60mA 1 should be guarded by ground 2 No via on both of them 3 Signal Width 12mils Signal to Signal Width 12mils Ground ...

Page 21: ...B 3 AVDD_MOD_1 4 RXCN_A 5 RXCP_A 6 RX0N_A 7 RX0P_A 8 RX1N_A 9 RX1P_A 10 RX2N_A 11 RX2P_A 12 HSYNC0 13 BIN0P 14 GIN0P 15 GIN0M 16 RIN0P 17 VSYNC0 18 AVDD3P3_ADC 19 BIN1P 20 SOGIN1 21 GIN1P 22 GIN1M 23 RIN1P 24 CVBS0 25 VCOM 26 CVBS_OUT1 27 VDDC_1 28 AVDD_AU33 29 LINEIN_R0 30 LINEIN_L0 31 LINEIN_R1 32 LINEIN_L1 33 VAG 34 VRM_ADC 35 LINEOUT_L3 36 LINEOUT_R3 37 IFAGC 38 VIFP 39 VIFM 40 AVDD3P3_DADC 41...

Page 22: ...5 6K HD 12V Panel R418 4 7K OPT RXBCK RXB3 R419 5 6K FHD 5V Panel RXA0 R420 100 OPT RXA1 JP413 RXA2 RXA3 R414 5 6K HD 12V Panel RXA3 JP412 RXA1 RXB0 R421 5 6K FHD 5V Panel 3 3V 3 3V_ST 3 3V_ST D410 30V CDS3C30GTH D411 30V CDS3C30GTH R405 4 7K IC403 1 BR24G512FJ 3 Rohm_EEPROM 3 A2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC P400 12507WR 08L 1 2 3 4 5 6 7 8 9 AR413 3 3K AR400 100 15Y_CONTROL IC403 AT24C5...

Page 23: ... 7 VCC 8 FB IC503 MP2315GJ 3 SW 2 IN 4 GND 1 AAM 5 BST 6 EN SYNC 7 VCC 8 FB R504 47K R501 47K OPT R529 47K 1 R514 100 R505 100 HD 12V Panel R546 1 75K HD 12V Panel Q503 SSM3J332R S G D Q502 SSM3J332R S G D Q500 2N3904S E B C Q501 2N3904S E B C Q504 2N3904S FHD 5V Panel E B C C524 10uF 16V HD 12V Panel C522 10uF 16V HD 12V Panel C528 0 1uF 16V HD 12V Panel C527 10uF 6 3V C531 10uF 6 3V 10uF C533 6 ...

Page 24: ...P_AMP_SDA C619 680pF 50V AMP_RESET_N 3 3V_ST 3 3V 3 3V 3 3V AMP_MUTE C613 100uF 25V 105C OPT C614 100uF 25V 105C OPT C608 10uF 10V 0 33uF C622 50V 0 33uF C623 50V 0 33uF C624 50V 0 33uF C621 50V IC600 BM28720MUV 1 ADDR 3 LRCK 7 REG15 9 TEST2 10 DVDD 11 TEST3 12 STADAO 13 ERROR 14 NC_1 15 BSP2N 16 OUT2N 17 VCCP2 18 GNDP2 19 BSP2P 20 OUT2P 21 OUT1N 22 BSP1N 23 GNDP1 24 VCCP1 25 OUT1P 26 BSP1P 27 REG...

Page 25: ..._NOT M1006 3 3V_ST CH2 C1011 0 1uF 16V C1032 4700pF 50V M1005 R1000 0 NOT23 6CMI R1063 0 23 6CMI R1042 33K 1 CH4 R1009 3 9K 1 R1001 0 23 6CMI P1004 12507WR 06L UPSIDE WAFER 22 1 2 3 4 5 6 7 CH4 R1039 100 PDIM R1041 2K 1 C1017 0 1uF 50V R1051 33 BLU_CURRENT_CTL P1005 12507WR 06L LEFT WAFER 22 NOT 1 2 3 4 5 6 7 R1010 3 9K 1 R1003 1 500 OPT Bead_500ohm C1028 10uF 6 3V OPT R1029 1 6K 1 R1028 1 6K 1 R1...

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