LG 32LB2R Series 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 : LP62E
FACTORY MODEL : 32LB2R-ZH

MODEL : 32LB2R

website:http://biz.LGservice.com

Summary of Contents for 32LB2R Series

Page 1: ...LCD TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LP62E FACTORY MODEL 32LB2R ZH MODEL 32LB2R website http biz LGservice com ...

Page 2: ...NTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 11 SERVICE REMOTE CONTROL 16 TROUBLE SHOOTING 17 BLOCK DIAGRAM 23 EXPLODED VIEW 24 EXPLODED VIEW PARTS LIST 25 REPLACEMENT PARTS LIST 26 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: ...on EMC CE IEC SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 4 General TV Specification No Item Specification Remark 1 Video input applicable system PAL D K B G I NTSC M SECAM NTSC 4 43 2 Receivable Broadcasting System 1 PAL SECAM BG 2 PAL SECAM DK 3 PAL I I 4 SECAM L L only ZH 5 PAL N M 6 NTSC M only TH 3 RF Input Channel VHF E2 E12 PAL UHF E21 E...

Page 7: ... x RGB Pixel Format 1366 x 768 Pixels RGB strip arrangement Coating Hard coating 3H Anti glare treatment of the front polarizer Back Light 32 20CCFL TBD 37 16CCFL No Parameter Symbol Value Unit Remark Min Typ Max 1 Contrast Ratio CR 32 800 1200 100IRE Full white window pattern APC Clear Dynamic 2 Surface Luminance LWH 32 360 450 Cd m2 100IRE Full white window pattern white APC Clear Dynamic 3 Whit...

Page 8: ... 3 EA PC Audio Component 1EA AV 1EA L R Input 12 Audio variable out 1EA 8 Component Video Input Y PB PR No Resolution H freq kHz V freq kHz Pixel clock MHz Remarks 1 720 x 480 15 73 59 94 13 500 SDTV DVD 480I 525I 2 720 x 480 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720 x 576 15 625 50 00 13 500 SDTV DVD 576I 625I 4 720 x 480 31 47 59 94 27 000 SDTV 480P 5 720 x 480 31 50 60 00 27 027 SDTV 480P 6 7...

Page 9: ... 50 60 00 27 027 SDTV 480P 3 720 x 576 31 25 50 00 27 000 SDTV 576P 4 1280 x 720 44 96 59 94 74 176 HDTV 720P 5 1280 x 720 45 00 60 00 74 250 HDTV 720P 6 1280 x 720 37 50 50 00 74 25 HDTV 720P 50Hz 7 1920 x 1080 33 72 59 94 74 176 HDTV 1080I 8 1920 x 1080 33 75 60 00 74 250 HDTV 1080I 9 1920 x 1080 28 125 50 00 74 250 HDTV 1080I 50Hz 11 HDMI Input PC No Resolution H freq kHz V freq kHz Pixel clock...

Page 10: ...920 x 1080 33 75 60 00 74 250 HDTV 1080I 9 1920 x 1080 28 125 50 00 74 250 HDTV 1080I 50Hz No Item Content Remark 1 Product Width Length Height Unit Dimension Before Packing 911 4 259 599 mm SET With Stand After Packing 1018 340 741 mm 2 ProductWeight Only SET 22 6 Kg With BOX 27 1 Kg 3 Container Loading Individual or 20ft 40ft Quantity Palletizing Indi Wooden Indi Wooden 102 96 201 204 4 Stand As...

Page 11: ...4 EDID Δ Caution Use the proper signal cable for EDID Download Analog EDID Pin3 exists Digital EDID Pin3 exists Caution Never connect HDMI DVI D DVI A Cable at the same time Use the proper cables below for EDID Writing 4 1 EDID Data 1 ANALOG 256 Bytes O BLOCK1 128BYTE 2 HDMI 256 Bytes O BLOCK1 128BYTE O BLOCK2 128BYTE Fig 1 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 00 FF FF FF FF FF FF FF...

Page 12: ...ue Black If color sequence is reversed Black White reverse the pattern with REV key when using Master pattern generator like MSPG 925 If Minimum Black Level and or Maximum White Level is not correct Do select 100 Color Bar Pattern 1 Method of Auto Component Color Balance 1 Input the Component 720p 100 Color Bar MSPG 925FA model 217 pattern 33 signal into Component ZH component TH MH component 1 or...

Page 13: ...n 2 Execute the SET Heat Run for 30minutes 3 As below Fig 3 Supply 216Level 85 IRE full screen pattern to Video input 32LB2R ZH 37LB2R ZH 42LB2R ZH AV3 AV4 Input 50Hz 4 Press the FRONT AV KEY on R C for converting input mode 5 Set the PSM to Standard mode in Picture menu 6 Enter the White Balance adjustment mode by pressing the INSTART key twice White Balance on R C 7 Stick sensor to center of the...

Page 14: ... 30 RF 10 AV1 4 20 21 22 23 SAV 30 COMP 41 DVI 50 or 60 HDMI 61 ACK 0 With signal ACK 1 Without signal ACK 2 Power Off Tool Option1 Tool Option2 Area Option1 Option Option2 Option3 Option4 Option Detail list Data Side AV BOOST Woofer SoundSettings Tuner Num EYE INDEX VFD FULL HDMI Type S or A 200PR ACMS TEXT CH AU SYS A2 ST I II SAVE HDEV V Curve MONO Scart CSM Default Lang LANG T LANG 0 1 0 1 0 1...

Page 15: ...me None 8 Picture PSM Dynamic Dynamic Contrast 100 Brightness 50 Colour 50 Sharpness 50 CSM Normal XD Auto Advanced Reset 9 Sound SSM Flat Off AVL Off Balance 0 50 50 Speaker On 10 Time Clock User control Off time Off On time Off Auto sleep Off 11 Special Language English Area management Child Lock Off Set ID 1 XD Demo To start 12 Screen Auto config Manual config XGA VGA mode Variable by each mode...

Page 16: ...omponent input 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 betwee...

Page 17: ...Plug in apower cord Yes No Is the Line Filter and PSU connected Connect a cable Plasma EL11 LCD SC100 Yes No Is normal the fuse of PSU Plasma F101 LCD F111 Replace the fuse Yes No Is it that PSU and 13pin cable in VSC board connected Conncet the 13pin cable After the cable connect isremoved to PSU except the CN101 the AC voltage marking is authorizesd on manual When ST by 5V doesn t operate replac...

Page 18: ... Is the each connector normal Agter connecting well each connector the normality it operates Yes No No Yes Is the output voltage normal after remove P1 connector of Z Boad Replace Z Board Replace the fuse No Yes Is the Y Board normal Is the fuse FS2 FS3 on Y Board normal Is the fuse FS1 FS2 on Z Board normal Yes No Is the output voltage normal after remove P100 P110 200 210 connector of X Board No...

Page 19: ...lowing Is the output voltage normality Low High Voltage except Stan by 5V Replace the Power board Reconnect the link cable in P803 Plasma P804 LCD Check the PDP LCD Module Yes No No Yes Replace the VSC Does minute discharge at Module Is the inverter VaVs on Yes No No Is the link cable normal Is the IC800 s output normal Start check ...

Page 20: ... Cable connected well Is the Input voltage check pin5 Pin4 Yes Yes No No Is video output of CXA2069Q normal Check R324 In case of S Video check R324 R328 Is the LVDS Cable connected well Start check Yes No Is normal the 12C communication Check Pin5 Pin4 Is the input voltage normal Check L308 Yes Is the 12C communication Check R309 R310 5 In the case of becomes unusual display from rear AV mode mai...

Page 21: ...310 7 In the case of becomes unusual dispaly from rear AV mode main Check the input source Same as Block A Yes No Is video input of the A V jack normal Check R343 8 In the case of becomes unusual display from side S Video mode main Check the input source Same as Block A Yes No Is video input of the A V jack normal Check R102 9 In the case of becomes unusual display from SCART 1 mode main Check the...

Page 22: ...rmal Check L111 L112 L106 11 In the case of becomes unusual display from SCART 2 mode main Check the input source Same as Block A Yes No Is video input of the A V jack normal Check R115 12 In the case of becomes unusual display from SCART 2_YC mode main Check the input source Same as Block A Yes No Is video input of the A V jack normal Check R115 R149 ...

Page 23: ...k T200_Pin14 Is the Tunner Cable connected well Is the Input voltage check pin8 Pin6 Yes Yes No No Is video output of CXA2069Q normal Check R312 In case of S Video check R312 R324 Is the LVDS Cable connected well Yes No Is normal the 12C communication Check Pin5 Pin4 Is the input voltage normal Check L308 Yes Is the 12C communication Check R309 R310 14 In the case PIP doesn t display from other mo...

Page 24: ... L128 16 In the case of becomes unusual display from component 2 mode main sub Check the input source Change IC IC800 Yes No Is video input of the JK103 normal CheckL129 L130 L131 17 In the case of becomes unusual display from RGB mode main sub Check the input source Change IC IC800 Yes No Is R G B input and H V sync of the JK500 normal ChecK R509 R511 R512 R513 R515 ...

Page 25: ... the Tuner In Out Yes No No Yes All input mode is no sound Is the speaker on in menu check the Speaker cable No Yes Is the speaker cable normal Replace IC400 Replace IC401 Replace IC402 No Yes IC400 operate normally No Yes IC401 operate normally Replace VSC Board No Yes IC402 operate normally Yes No No No No Only HDMIis no Sound Only AV input is no sound Yes Yes Only RF is no sound Is the output o...

Page 26: ...each port Check HDMI source Change another source or cable Replace IC01200 No No Yes Is only video normal Yes Is only audio normal No Check TMDS line wave R1215 R1222 R1226 R1233 Is wave continuous Normal video Normal audio Yes 1 Check HDMI receiver s status register 0x60 offset 00x6 If the value is 0xf or 0x8 it is normal 2 Check HDCP register 0x6 offset 0x32 Enable bit 6 HDCP key loaded Enable b...

Page 27: ..._DATA 3 3V HDMI_CLK DE 3 3V HDMI_IIS 3 3V HDMI_VS HS 3 3V SCL SDA EEPROM 24C02 HDMI Rx SCL SDA_Part SCL SDA_Part FRC EVEN_R G B_Data 24 DCLK DE DHS DVS FRC_SDA SCL FRC_Reset_NEG FRC_RX TX RAM_ CAS RAS RAM_ CS WE RAM_ CKE CLK RAM_LDQS UDQS RAM_ BA0 1 RAMA_0 11 RAMDQS_0 15 FRC_R G B_Out_ 0 9 FRC_DEN CLK_Out FRC_HS VS_Out Memory RAM_ CAS RAS RAM_ CS WE RAM_ CKE CLK RAM_LDQS UDQS RAM_ BA0 1 RAMA_0 11 ...

Page 28: ... 28 EXPLODED VIEW 010 020 060 060 070 140 080 090 100 030 040 042 041 150 130 050 120 110 ...

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Page 32: ...Oct 2006 Printed in Korea P NO MFL36037301 ...

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