LG 32LX4DC-UA Service Manual Download Page 1

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LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : AL-04CA

MODEL : 32LX4DC-UA/32LX4DCS-UA

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

Summary of Contents for 32LX4DC-UA

Page 1: ...VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS AL 04CA MODEL 32LX4DC UA 32LX4DCS UA website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...NTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 13 TROUBLE SHOOTING 16 BLOCK DIAGRAM 19 WIRING DIAGRAM 21 EXPLODED VIEW 22 EXPLODED VIEW PARTS LIST 23 REPLACEMENT PARTS LIST 24 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 A6K3 1366x768 LG Philips LCD 9 Operating Environment Temp 0 40 deg Humidity 10 90 10 Storage Environment Temp 20 50 deg Humidity 10 90 4 Feature and Function No Item Specification Remark 1 Feature AV In...

Page 7: ...rround XT TV Speaker Off On 6 Time Auto Clock Off On Time Zone 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 Caption Off EZ Mute On DTV Horizon disable Caption Mode CC1 CC2 CC3 CC4 Text1 Text2 Text3 ...

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: ...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 90 264 V 2 DC Voltage LCD Panel Drive 11 4 12 0 12 6 V 3 DC Voltage Inverter 23 4 24 0 24 6 V 4 DC Voltage Sound AMP 17 4 18 0 18 6 V 5 DC Voltage Stand By 4 6 5 0 5 4 V 6 DC Vol...

Page 10: ...dio Out Frequency Response Low 80 0 Hz High 8 0 10 0 19 0 kHz 17 AV Audio Out Distortion 2 0 18 AV Audio Dynamic Range 2 00 Vpp 19 Component Video Input Level Y CB PB CR PR 0 6 0 7 0 8 Vpp 75 ohm 480i 480p 720p 1080i 20 RGB HV Input Level 0 6 0 7 0 8 Vpp 75 ohm 8 General Specifications No Item Min Typ Max Unit Remark 1 Active Screen Size 800 4 diagonal mm 29 53 inches 2 Outline Dimension 760 0 H x...

Page 11: ...2 msec 5 Color coordinate RED X 0 640 Full Pattern Y 0 343 GREEN X Typ 0 275 Typ Y 0 03 0 605 0 03 BLUE X 0 145 Y 0 065 WHITE X 0 271 Y 0 279 6 Viewing Angle X axis right 0 85 88 degree CR 10 X axis left 180 85 88 Yaxis up 90 85 88 Z axis down 270 85 88 10 Mechanical specification No Item Content Remark 1 Product Width W Length D Height H Dimension 922 182 545 3 With Stand Include D box Rear cover...

Page 12: ...t 100 Brightness 50 Colour 60 Sharpness 60 Tint 0 XD On Color Temperature Medium 6 Sound EZ Sound Normal Audio Language Empty Ch map User Control Balance 0 Treble 50 Bass 50 Ez SoundRite Off AVL Sap Stereo Front Surround Off TV Speaker On Balance 0 7 Timer Auto Clock On Eastern Manual Clock Off Off Timer On Timer Off Sleep Timer Auto Off 8 Option Aspect Ratio 16 9 Caption Off Front Display Off 9 C...

Page 13: ...h Pattern 09CH with significant black white contrast 3 Total Adjustment 3 1 EDID Extended Display Identification Data DDC Display Data Channel download 3 1 1 Summary This function was created by VESA and is intended to realize Plug and Play that the computer automatically communicates with the monitor through mutual change of information and re configure user environment so than the user can immed...

Page 14: ...tment of main subsidiary part is intended to reduce color difference of the main subsidiary part in the PIP POP SPLIT Screen A After entering inner signal enter into the Ez Adjust by pressing the ADJ key of the remote control for adjustment and select the 2 VPX3226 and enter into the Adjustment Mode by pressing the right key B The screen automatically becomes a TV 6CH SPLIT Screen if entering into...

Page 15: ...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 16: ...ge check A board P818 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 P811 power0 3 3V D_board main voltage P810 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 17: ...ass Pass Pass Pass Replace IC480 Q411 Replace D_board Stand by voltage D_board IC480 5 6 7 8 12V D_Board P412 LVDS Signal Exist Check No Power Go to Power Fail Fail Fail Fail Replace D_board Replace A_board A_board P817 13 15V Check No Power Go to Power Check Module T con voltage D board P412 2 3 4pin 12V Replace LCD Module ...

Page 18: ...ace Connector Replace Power Board Replace A_Board Replace Speaker Check Sound supply A_board P817 1 2 18V Power board 15Pin Connector check Fail Fail Fail Pass Pass Pass Speaker output check Is there waveform of P601 1 ...

Page 19: ...BLOCK DIAGRAM LCD Built In 19 ...

Page 20: ... that decodes input signals HD II is a chip that controls nearly all video related functions including brightness sharpness video formatting and scaling If digital broadcasting is available it comes through TP which can be controlled from HD II Video SW CXA2181 is an IC that outputs video signals selectively The selected one is outputted through ADC AD9883A as a digital signal uCom M306H3 interfac...

Page 21: ... B C D E F G H I J K L M N O P 6631T11020Z 30P 6631T20037D 12P 6631T25023R 13P 6631T25019W 5P 6631T25019X 15P 6631V10004A 31P 6631T11017J 31P 6631T25019U 7P 6631T20037E 12P 6631T20033N 12P 6631T20037N 7P 6631T20037W 11P 6631T25025E 10P 6631T11020V 20P 6631T25024G 3P 6631T25024H 4P ...

Page 22: ... 22 EXPLODED VIEW 010 150 160 040 170 180 020 060 071 070 080 090 100 110 120 130 030 140 050 200T 200N 201N ...

Page 23: ...10D Plate PRESS SBHG T1 6 SIDE BRACKET RIGHT 32LX1D LPL SL01 05 MODULE 6871TPT303B PCB Assembly Power DU DN DI 32LP10 POWER TOTAL BRAND DU DCR COMM SH D112 33139D3007A Main Total Assembly 32LX3DC UA DIGITAL PB FREE BRAND AL 04CA 6871TSTA84A PCB Assembly Sub 32LX3DC UA SUB TOTAL BRAND SIDE A V 4951TKK238F Plate Assembly FRAME REAR 32LX3DC CSKD 4815TKK046F Plate Assembly REAR SHIELD ASSY 32LX3DC CSK...

Page 24: ...UF 50V 10 X7R 2012 R TP C234 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C235 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C236 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C237 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C239 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C240 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C242 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C243 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C247 0CH3104K566 0 1UF 5...

Page 25: ...F 50V 10 X7R 2012 R TP C625 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C642 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C657 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C658 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C659 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C660 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C661 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C662 0C...

Page 26: ...R 2012 R TP C218 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C219 0CH3103K516 10000PF 50V 10 B Y5P 2012 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C238 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C241 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C244 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C245 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C246 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C257 0CH3104K566 0 ...

Page 27: ...34F566 0 33UF 16V 10 X7R 2012 R T C845 0CH2334F566 0 33UF 16V 10 X7R 2012 R T DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C850 0CH2334F566 0 33UF 16V 10 X7R 2012 R T C825 0CE227DK618 220UF STD 50V M FL TP5 C829 0CE227DK618 220UF STD 50V M FL TP5 C1201 0CH8106F691 10UF 16V 20 105STD CYL R C124 0CH8106F691 10UF 16V 20 105STD CYL R C125 0CH8106F691 10UF 16V 20 105STD CYL R C1300 0CH...

Page 28: ... DESCRIPTION SPECIFICATION ZD1305 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 IC500 0ICB841500D CS8415AR CSR 28PIN SOIC R T IC200 0ICTMLG009A LGDT1102 HD2 LG IC SBGA 43 IC200 0ICTMLG009D LGDT1102 HD2 LEED FREE LG I Non Pb free IC315 0ICTMLG013A LGDT1901A LG IC 24P SSOP TR IC607 0ICTMLG014A LGDT3302 LG IC 100P TQFP TR IC101 0IZZTSZ667B ATMEL 25P 32LX3DC UA FLASH IC102 0IZZTSZ668B ATMEL 25PINP 32LX3DC U...

Page 29: ...VOLT 1A F408 6200VJT001A BMK400 TA NIIGATA 50VOLT 1A F410 6200VJT006A STC222D NIIGATA 50VOLT 4A 2 F411 6200VJT006A STC222D NIIGATA 50VOLT 4A 2 F800 6200VJT001A BMK400 TA NIIGATA 50VOLT 1A DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION F801 6200VJT001A BMK400 TA NIIGATA 50VOLT 1A F810 6200VJT006A STC222D NIIGATA 50VOLT 4A 2 IC302 6200J00011A H354LAI K5202 TOKO R TP BAN IC303 6200J000...

Page 30: ...0RH0000D622 0 OHM 1 10 W 2012 5 00 D R251 0RH0222D622 22 OHM 1 10 W 2012 5 00 R257 0RH2200D622 220 OHM 1 10 W 2012 5 00 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R258 0RH2200D622 220 OHM 1 10 W 2012 5 00 R259 0RH0222D622 22 OHM 1 10 W 2012 5 00 R260 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R261 0RH2200D622 220 OHM 1 10 W 2012 5 00 R262 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R263 0RH0...

Page 31: ...2012 5 00 R117 0RH0222D622 22 OHM 1 10 W 2012 5 00 R118 0RH1000D622 100 OHM 1 10 W 2012 5 00 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R119 0RH0222D622 22 OHM 1 10 W 2012 5 00 R120 0RH1000D622 100 OHM 1 10 W 2012 5 00 R121 0RH0222D622 22 OHM 1 10 W 2012 5 00 R122 0RH0222D622 22 OHM 1 10 W 2012 5 00 R123 0RH0222D622 22 OHM 1 10 W 2012 5 00 R124 0RH0222D622 22 OHM 1 10 W 2012 5 0...

Page 32: ...OHM 1 10 W 2012 5 00 R248 0RH0332D622 33 OHM 1 10 W 2012 5 00 R252 0RH0222D622 22 OHM 1 10 W 2012 5 00 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R254 0RH2200D622 220 OHM 1 10 W 2012 5 00 R255 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R256 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R265 0RH0222D622 22 OHM 1 10 W 2012 5 00 R266 0RH0222D622 22 OHM 1 10 W 2012 5 00 R268 0RH0222D622 22 OHM 1 1...

Page 33: ...5 00 R632 0RH0102D622 10 OHM 1 10 W 2012 5 00 R633 0RH0222D622 22 OHM 1 10 W 2012 5 00 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R635 0RH3000D622 300 OHM 1 10 W 2012 5 00 R637 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R638 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R639 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R640 0RH4701D622 4 7K OHM 1 10 W 2012 5 00 R642 0RH3300D622 330 OHM 1 10 W 2012 5 0...

Page 34: ...HM 1 10 W 2012 5 00 D RD42 0RH0000D622 0 OHM 1 10 W 2012 5 00 D RD44 0RH0000D622 0 OHM 1 10 W 2012 5 00 D RD5 0RH0000D622 0 OHM 1 10 W 2012 5 00 D RD6 0RH0000D622 0 OHM 1 10 W 2012 5 00 D RD7 0RH0000D622 0 OHM 1 10 W 2012 5 00 D DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION RD8 0RH0000D622 0 OHM 1 10 W 2012 5 00 D X820 6212AC2329A CH 206 SUNNY 32 768KHZ X100 6212AB2015E HC 49 SM BU...

Page 35: ...66 0 47UF 16V 10 X7R 2012 R T C834 0CH2474F566 0 47UF 16V 10 X7R 2012 R T C835 0CH3103K516 10000PF 50V 10 B Y5P 2012 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C838 0CH3103K516 10000PF 50V 10 B Y5P 2012 C839 0CH3105F946 1UF 16V 80 20 F Y5V 201 C859 0CH2474F566 0 47UF 16V 10 X7R 2012 R T C861 0CH2474F566 0 47UF 16V 10 X7R 2012 R T C862 0CH2474F566 0 47UF 16V 10 X7R 2012 R T C863 ...

Page 36: ...0RH0000D622 0 OHM 1 10 W 2012 5 00 D R105 0RH7500D622 750 OHM 1 10 W 5 D R TP R106 0RH0822D622 82 OHM 1 10 W 2012 5 00 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R107 0RH0222D622 22 OHM 1 10 W 2012 5 00 R108 0RH1000D622 100 OHM 1 10 W 2012 5 00 R109 0RH0822D622 82 OHM 1 10 W 2012 5 00 R110 0RH0222D622 22 OHM 1 10 W 2012 5 00 R111 0RH0822D622 82 OHM 1 10 W 2012 5 00 R112 0RH0222D...

Page 37: ...OHM 1 10 W 2012 5 00 R801 0RH4700D622 470 OHM 1 10 W 2012 5 00 R803 0RH1501D622 1 5K OHM 1 10 W 2012 5 00 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R804 0RH2200D622 220 OHM 1 10 W 2012 5 00 R805 0RH1001D622 1K OHM 1 10 W 2012 5 00 R824 0RH1502D622 15K OHM 1 10 W 2012 5 00 R825 0RH6801D622 6 8K OHM 1 10 W 2012 5 00 R826 0RH1001D622 1K OHM 1 10 W 2012 5 00 R827 0RH1502D622 15K OH...

Page 38: ...CE107VF6DC 100UF MV 16V 20 R TP SMD C1868 0CE107VF6DC 100UF MV 16V 20 R TP SMD C1871 0CE107VF6DC 100UF MV 16V 20 R TP SMD DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C602 0CE476VF6DC 47UF MV 16V 20 R TP SMD S C604 0CE107VF6DC 100UF MV 16V 20 R TP SMD C611 0CE476VF6DC 47UF MV 16V 20 R TP SMD S C612 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C613 0CE226VF6DC 22UF MV 16V 20 R TP SMD S C...

Page 39: ...C943 0CH3103K516 10000PF 50V 10 B Y5P 2012 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C944 0CH6101K416 100PF 50V 5 NP0 2012 R TP C946 0CE106VF6DC 10UF MV 16V 20 R TP SMD S C947 0CH6150K416 15PF 2012 50V 5 NP0 R TP C953 0CE475VK6DC 4 7UF MV 50V 20 R TP SMD C954 0CE475VK6DC 4 7UF MV 50V 20 R TP SMD C958 0CH2474F566 0 47UF 16V 10 X7R 2012 R T C959 0CH2474F566 0 47UF 16V 10 X7R 2012...

Page 40: ...12 5 00 R118 0RH1501D622 1 5K OHM 1 10 W 2012 5 00 R121 0RH4703D622 470K OHM 1 10 W 2012 5 00 R123 0RH0000D622 0 OHM 1 10 W 2012 5 00 D DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R124 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R130 0RH1002D622 10K OHM 1 10 W 2012 5 00 R131 0RH1002D622 10K OHM 1 10 W 2012 5 00 R132 0RH4701D622 4 7K OHM 1 10 W 2012 5 00 R133 0RH1000D622 100 OHM 1 10 W 2...

Page 41: ...M 1 10 W 2012 5 00 R822 0RH0822D622 82 OHM 1 10 W 2012 5 00 R823 0RH0822D622 82 OHM 1 10 W 2012 5 00 DATE 2006 06 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R835 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R845 0RH0822D622 82 OHM 1 10 W 2012 5 00 R846 0RH0822D622 82 OHM 1 10 W 2012 5 00 R847 0RH0822D622 82 OHM 1 10 W 2012 5 00 R848 0RH0822D622 82 OHM 1 10 W 2012 5 00 R849 0RH0822D622 82 OHM 1 10 W ...

Page 42: ... 20 S AL LOC NO PART NO DESCRIPTION SPECIFICATION L3102 0RH1000D622 100 OHM 1 10 W 2012 5 00 Q3101 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3102 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3103 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3104 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3105 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3106 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3107 0TR387500AA CHIP 2SC3875S ALY BK KEC R3102 ...

Page 43: ...03 0DLBE0158AA BRIGHT LED ELECTRONICS BL H LED804 0DLBE0158AA BRIGHT LED ELECTRONICS BL H LED805 0DLBE0158AA BRIGHT LED ELECTRONICS BL H LED806 0DLBE0158AA BRIGHT LED ELECTRONICS BL H LED807 0DLBE0158AA BRIGHT LED ELECTRONICS BL H Q3215 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3216 0TR387500AA CHIP 2SC3875S ALY BK KEC Q3217 0TR387500AA CHIP 2SC3875S ALY BK KEC R3101 0RJ4701D477 4 7K OHM 1 10 W 1 1608...

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Page 47: ...Jun 2006 Printed in Korea P NO ...

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