LG 32LX4DC-UB, Service Manual

Page 1: ...RVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LA53A MODEL 32LX4DC UB 32LX4DCS UB website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ... 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 11 TROUBLE SHOOTING 14 BLOCK DIAGRAM 17 EXPLODED VIEW 18 EXPLODED VIEW PARTS LIST 19 REPLACEMENT PARTS LIST 20 SVC SHEET ...

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

Page 4: ...vely 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 buildup or exposure of the assembly 3 Use only a ground...

Page 5: ...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 component and adjacent components and the circuit boa...

Page 6: ... Channel VHF 02 13 UHF 14 69 CATV 01 135 DTV 02 69 3 Input Voltage AC 100 260V 50 60Hz 4 Market North America 5 Screen Size 32 inch wide 6 Aspect Ratio 16 9 7 Tuning System FS 8 LCD Module LC320W01 SL11 1366x768 LG Philips LCD 9 Operating Environment Temp 0 40 deg Humidity 80 10 Storage Environment Temp 20 50 deg Humidity 10 90 4 Feature and Function No Item Specification Remark 1 Feature AV Input...

Page 7: ...TruSurround XT TV Speaker Off On 6 Time Auto Clock Off On Time Zone Daylight Saving Manual Clock Year Data Time Off Timer Off On Time On Timer Off On Time Ch Vol Sleep Timer Off 10 min 20 min 30 min 60 min 90 min 120 min 180 min 240 min Auto Off Off On 7 Option Aspect Ratio Set By Program 4 3 16 9 Horizon Zoom1 Zoom2 Cinema Zoom 1 16 Caption Off EZ Mute On DTV Horizon disable Caption text CC1 CC2 ...

Page 8: ... 31 468 70 09 25 17 EGA O 8 640x480 31 469 59 94 25 17 VESA VGA O 9 640x480 37 861 72 80 31 50 VESA VGA O 10 640x480 37 500 75 00 31 50 VESA VGA O 11 800x600 35 156 56 25 36 00 VESA SVGA O 12 800x600 37 879 60 31 40 00 VESA SVGA O 13 800x600 48 077 72 18 50 00 VESA SVGA O 14 800x600 46 875 75 00 49 50 VESA SVGA O 15 1024x768 48 363 60 00 65 00 VESA XGA O 16 1024x768 56 476 70 06 75 00 VESA XGA O 1...

Page 9: ...75 VESA XGA O DTV 35 704x480 31 47 59 94 SDTV 480P 36 1280x720 45 00 60 00 HDTV 720P 37 1280x720 44 96 59 94 HDTV 720P 38 1920x1080 33 75 60 00 HDTV 1080I 39 1920x1080 33 72 59 94 HDTV 1080I 6 POWER No Item Min Typ Max Unit Remark 1 AC Power Operating Voltage 100 240 V 2 DC Voltage LCD Panel Drive 11 4 12 0 12 6 V 3 DC Voltage Inverter 22 8 24 0 25 2 V 4 DC Voltage Sound AMP 18 0 19 0 20 0 V 5 DC ...

Page 10: ...g 0 14 000 feet 4 267 2 m Storage Shipment 0 40 000 feet 12 192 0 m 8 Electro Optical Characteristic Specifications No Item Min Typ Max Unit Remark 1 Contrast Ratio 600 800 C It measured at center point 2 Surface Luminance White 400 500 Cd m2 Full white 3 Luminance Variation 1 3 4 Response Time Tr Rising time 16 30 msec 5 Color coordinate RED X 0 632 Full Pattern Y 0 342 GREEN X Typ 0 275 Typ Y 0 ...

Page 11: ...t Adjustment 4 1 Synopsis The menu of MST3385A set let optimum black level and Gain automatically set up during changing from Analog mode to Digital mode and also correct RGB variation 4 2 Test Equipment Service R C MSPG925FA Pattern Generator 720P 480i The Horizontal 100 Color Bar Pattern output will be possible and the output level will accurately have to be revised with 0 7 0 1Vp p 4 3 Adjustme...

Page 12: ...UPD Set and enter the adjustment mode by pressing the right key G 3 When enter the adjustment mode displayed the TV 2CH SPLIT Screen automatic at picture and appear as below figure 4 When the automatic adjustment is over RF Configuration Success is displayed If the adjustment has errors Video Configuration Error is displayed 5 After the RF signal automatic adjustment is over convert the Video Mode...

Page 13: ...put To check the front AV To move channel up down or to select a function displayed on the screen To adjust the volume or accurately control a specific function To set a specific function or complete setting To move the channel down in the PIP screen To use as a red key in the teletext mode To move the channel in the PIP screen To use as a green key in the teletext mode To switch between the main ...

Page 14: ...ge check A board P502 5Pin 5V Check 15V or 5V of Lips Connection of power supply part Check wiring status of the 13 pin connector Connection of power supply part Check wiring status of the 15 pin connector Power on signal level D board P101 power0 3 3V D_board main voltage P100 3 3V 6V P 12V P 30V P Fail Fail Fail Fail Fail Pass Pass Pass Pass Pass Pass Pass Replace Power_board Replace D_board MIC...

Page 15: ...Pass Pass Pass Pass Replace Q202 Q200 Replace D_board Stand by voltage D_board Q202 5 6 7 8 12V D_Board P202 LVDS Signal Exist Check No Power Go to Power Fail Fail Fail Fail Replace D_board Replace A_board A_board P502 13 15V Check No Power Go to Power Check Module T con voltage D board P202 2 3 4pin 12V Replace LCD Module ...

Page 16: ...e Connector Replace Power Board Replace A_Board Replace Speaker Check Sound supply A_board P502 1 2 18V Power board 15Pin Connector check Fail Fail Fail Pass Pass Pass Speaker output check Is there waveform of P600 P601 1 ...

Page 17: ...BLOCK DIAGRAM LCD Built In 17 ...

Page 18: ... 18 EXPLODED VIEW 010 150 160 040 170 180 020 060 071 070 080 090 100 110 120 130 030 140 050 ...

Page 19: ... UB MAIN FRAME LGEMX PHANTOM FOR LOCAL ASS Y 4950TKA210C Plate PRESS SBHG T1 6 SIDE BRACKET LEFT 32LX1D LPL SL01 05 MODULE 4950TKA210D Plate PRESS SBHG T1 6 SIDE BRACKET RIGHT 32LX1D LPL SL01 05 MODULE 6871TPT303B PCB Assembly Power POWER T T DU DCR COMM SH D112 DU DN DI 32LP10 BRAND EBU30789901 Main Total Assembly 32LX4DC UA BRAND LA53A DIGITAL EBR30801401 PCB Assembly SUB T T LA53A 32LX4DC UA AL...

Page 20: ...016S0ANB010 10uF 20 C708 0CE106VF6DC VGV106M016S0ANB010 10uF 20 C709 0CE106VF6DC VGV106M016S0ANB010 10uF 20 C710 0CE106VF6DC VGV106M016S0ANB010 10uF 20 C713 0CE105SK6DC VMV105M050S0ANB010 1uF 20 C714 0CE105SK6DC VMV105M050S0ANB010 1uF 20 C715 0CE105SK6DC VMV105M050S0ANB010 1uF 20 C716 0CE105SK6DC VMV105M050S0ANB010 1uF 20 C801 0CE476VF6DC VGV476M016S0ANE010 47uF 20 C811 0CE476VF6DC VGV476M016S0ANE...

Page 21: ...0nF 10 50 C922 0CH3104K566 0805B104K500CT 100nF 10 50 C923 0CH3104K566 0805B104K500CT 100nF 10 50 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C925 0CH3104K566 0805B104K500CT 100nF 10 50 C100 0CH5150K416 C2012C0G1H150JT 15pF 5 50V C104 0CH3104K566 0805B104K500CT 100nF 10 50 C106 0CH5150K416 C2012C0G1H150JT 15pF 5 50V C200 0CH2474F566 0805B474K160CT 470nF 10 16 C204 0CH6101K416 C20...

Page 22: ... 2V 80 ZD723 0DZRM00178A UDZS5 1B 5 1V 4 98TO5 2V 80 ZD310 0DZ510009EE UDZS5 1B 5 1V 4 98TO5 2V 80 ZD311 0DZ510009EE UDZS5 1B 5 1V 4 98TO5 2V 80 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION ZD312 0DZ510009EE UDZS5 1B 5 1V 4 98TO5 2V 80 ZD313 0DZ510009EE UDZS5 1B 5 1V 4 98TO5 2V 80 ZD314 0DZ510009EE UDZS5 1B 5 1V 4 98TO5 2V 80 ZD315 0DZ510009EE UDZS5 1B 5 1V 4 98TO5 2V 80 ZD704 0DZ...

Page 23: ...202 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q203 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q204 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q205 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q302 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q303 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q304 0TR150400BA 2SA1504S ASY PNP 5V 50V Q305 0TR387500AA 2SC3875S ALY NPN ...

Page 24: ...OHM 5 1 8W R533 0RH1001D622 MCR10EZHJ102 1KOHM 5 1 8W R534 0RH1001D622 MCR10EZHJ102 1KOHM 5 1 8W DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R535 0RH2201D622 MCR10EZHJ222 2 2KOHM 5 1 8 R536 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R537 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R538 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R539 0RH1001D622 MCR10EZHJ102 1KOHM 5 1 8W R540 0RH1501D622 MCR10...

Page 25: ...OHM 5 1 8W R346 0RH0752D622 MCR10EZHJ750 75OHM 5 1 8W R347 0RH1001D622 MCR10EZHJ102 1KOHM 5 1 8W DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R348 0RH0822D622 MCR10EZHJ820 82OHM 5 1 8W R350 0RH0822D622 MCR10EZHJ820 82OHM 5 1 8W R352 0RH1000D622 MCR10EZHJ101 100OHM 5 1 8W R353 0RH0822D622 MCR10EZHJ820 82OHM 5 1 8W R355 0RH1502D622 MCR10EZHJ153 15KOHM 5 1 8W R356 0RH5600D622 MCR10EZ...

Page 26: ...H0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R903 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R904 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R911 0RH1001D622 MCR10EZHJ102 1KOHM 5 1 8W R913 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R914 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R915 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R916 0RH0000D622 MCR10EZHJ000 0OHM 5 1...

Page 27: ...03B104K500CT 100nF 10 50 C1007 0CK104CK56A 0603B104K500CT 100nF 10 50 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C1008 0CK104CK56A 0603B104K500CT 100nF 10 50 C1009 0CK104CK56A 0603B104K500CT 100nF 10 50 C101 0CK103CK56A 0603B103K500CT 10nF 10 50V C1011 0CK104CK56A 0603B104K500CT 100nF 10 50 C1012 0CK104CK56A 0603B104K500CT 100nF 10 50 C1013 0CK104CK56A 0603B104K500CT 100nF 10 50...

Page 28: ...04K500CT 100nF 10 50 C331 0CK104CK56A 0603B104K500CT 100nF 10 50 C332 0CK104CK56A 0603B104K500CT 100nF 10 50 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C333 0CK104CK56A 0603B104K500CT 100nF 10 50 C334 0CK104CK56A 0603B104K500CT 100nF 10 50 C335 0CK104CK56A 0603B104K500CT 100nF 10 50 C337 0CK104CK56A 0603B104K500CT 100nF 10 50 C338 0CK104CK56A 0603B104K500CT 100nF 10 50 C400 0CK1...

Page 29: ...100nF 10 50 C701 0CK104CK56A 0603B104K500CT 100nF 10 50 C702 0CK104CK56A 0603B104K500CT 100nF 10 50 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C703 0CK104CK56A 0603B104K500CT 100nF 10 50 C704 0CK104CK56A 0603B104K500CT 100nF 10 50 C705 0CK104CK56A 0603B104K500CT 100nF 10 50 C706 0CK104CK56A 0603B104K500CT 100nF 10 50 C707 0CK104CK56A 0603B104K500CT 100nF 10 50 C708 0CK104CK56A 0...

Page 30: ...0CK104CK56A 0603B104K500CT 100nF 10 50 C991 0CK104CK56A 0603B104K500CT 100nF 10 50 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C992 0CK104CK56A 0603B104K500CT 100nF 10 50 C993 0CK104CK56A 0603B104K500CT 100nF 10 50 C994 0CK104CK56A 0603B104K500CT 100nF 10 50 C995 0CK104CK56A 0603B104K500CT 100nF 10 50 C996 0CK104CK56A 0603B104K500CT 100nF 10 50 C997 0CK104CK56A 0603B104K500CT 100...

Page 31: ...04K500CT 100nF 10 50 C909 0CK104CK56A 0603B104K500CT 100nF 10 50 C911 0CK104CK56A 0603B104K500CT 100nF 10 50 C927 0CK104CK56A 0603B104K500CT 100nF 10 50 C928 0CK103CK56A 0603B103K500CT 10nF 10 50V DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C957 0CC220CK41A C1608C0G1H220JT 22pF 5 50V C963 0CC220CK41A C1608C0G1H220JT 22pF 5 50V C965 0CC221CK41A C1608C0G1H221JT 220pF 5 50 C966 0CK4...

Page 32: ...ML00003B MLB 201209 0120P N2 120OHM DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION L402 0LCML00003B MLB 201209 0120P N2 120OHM L405 0LCML00003B MLB 201209 0120P N2 120OHM L406 0LCML00003B MLB 201209 0120P N2 120OHM L407 0LCML00003B MLB 201209 0120P N2 120OHM L408 0LCML00003B MLB 201209 0120P N2 120OHM L502 0LCML00003B MLB 201209 0120P N2 120OHM L503 0LCML00003B MLB 201209 0120P N2 1...

Page 33: ...006 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q102 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q103 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q200 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q301 0TR150400BA 2SA1504S ASY PNP 5V 50V Q302 0TR387500AA 2SC3875S ALY NPN 5V 60V 50 Q900 0TR150400BA 2SA1504S ASY PNP 5V 50V Q901 0TR150400BA 2SA1504S ASY PNP 5V ...

Page 34: ... MCR03EZPJ000 0OHM 5 1 10W R228 0RJ1002D677 MCR03EZPJ103 10KOHM 5 1 10 R229 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R236 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W R314 0RJ4701D477 MCR03EZPF472 4 7KOHM 1 1 1 R333 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R339 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R341 0RJ4701D477 MCR03EZPF472 4 7KOHM 1 1 1 R344...

Page 35: ...D622 MCR10EZHJ361 360OHM 5 1 8W R940 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R945 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 1 R956 0RJ2202D677 MCR03EZPJ223 22KOHM 5 1 10 R957 0RJ2202D677 MCR03EZPJ223 22KOHM 5 1 10 R959 0RJ2202D677 MCR03EZPJ223 22KOHM 5 1 10 R960 0RJ2202D677 MCR03EZPJ223 22KOHM 5 1 10 R961 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W ...

Page 36: ...EZPJ101 100OHM 5 1 10 R194 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R195 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R216 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R217 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R222 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W R223 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R224 0RJ1002D477 MCR03EZPF103 10KOHM 1 1 10 R226 0RJ1...

Page 37: ...02 1KOHM 5 1 10W R484 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W R485 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R488 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R490 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R498 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W R499 0RJ0562D477 MCR03EZPF560 56OHM 1 1 10W R500 0RJ0222D677 MCR03EZPJ220 22OHM 5 1 10W R502 0RJ4702D...

Page 38: ...R03EZPJ221 220OHM 5 1 10 R938 0RH3600D622 MCR10EZHJ361 360OHM 5 1 8W R941 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W R946 0RJ1500D677 MCR03EZPJ151 150OHM 5 1 10 R947 0RJ1500D677 MCR03EZPJ151 150OHM 5 1 10 DATE 2006 11 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R948 0RH0912D622 MCR10EZHJ910 91OHM 5 1 8W R949 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R950 0RH0912D622 MCR10EZHJ910 91OHM 5 1 8W R951 0RH...

Page 39: ...PT 1115AM 1C1P 12VDC 0 05A SW202 140 313B KPT 1115AM 1C1P 12VDC 0 05A SW203 140 313B KPT 1115AM 1C1P 12VDC 0 05A SW204 140 313B KPT 1115AM 1C1P 12VDC 0 05A SW205 140 313B KPT 1115AM 1C1P 12VDC 0 05A SW206 140 313B KPT 1115AM 1C1P 12VDC 0 05A SW207 140 313B KPT 1115AM 1C1P 12VDC 0 05A KZD200 0DZRM00178A UDZS5 1B 5 1V 4 98TO5 2V 80 KZD201 0DZRM00178A UDZS5 1B 5 1V 4 98TO5 2V 80 R200 0RH7501D622 MCR1...

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Page 44: ...Nov 2006 Printed in Korea P NO MFL37471801 ...