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LG Electronics 32LD320 32LD320-ZA - page 1
LCD TV SER VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : LD91A MODEL : 32LD320 32LD320-ZA MODEL : 32LD320N 32LD320N-ZA North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com Internal Use Only Printed in Korea P/NO : MFL503268 ...
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LG Electronics 32LD320 32LD320-ZA - page 2
- 2 - LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 PRODUCT SAFETY ................................................................................. 3 SPECIFICA T ...
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LG Electronics 32LD320 32LD320-ZA - page 3
LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes - 3 - SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by i n t h e Schematic Diagram and Exploded View. It is essential that these spec ...
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LG Electronics 32LD320 32LD320-ZA - page 4
LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes - 4 - CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict betwe ...
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LG Electronics 32LD320 32LD320-ZA - page 5
LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes - 5 - IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique shoul ...
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LG Electronics 32LD320 32LD320-ZA - page 6
LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes - 6 - SPECIFICA TION NOTE : Specifications and others are subject to change without notice for improvement . 1. Application range This specification is applied to the LCD TV used LD91A chassis. 2. Requirement for T est Each part is ...
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LG Electronics 32LD320 32LD320-ZA - page 7
- 7 - LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes No Specification Proposed Remark Resolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz) 1. 720*400 31.468 70.08 28.321 For only DOS mode 2. 640*480 31.469 59.94 25.17 VESA Input 848*480 60 Hz, 852*480 60 Hz -> 640*480 60 Hz Di ...
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LG Electronics 32LD320 32LD320-ZA - page 8
LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes - 8 - ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LCD TV with LD91A chassis. 2. Designation 1 ) The adjustment is according to the order which is designated and which must be follow ...
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LG Electronics 32LD320 32LD320-ZA - page 9
4) Updating is staring. 5) Fishing the version uploading, you have to put USB stick and “AC Power” off. 6) After putting “AC Power” on and check updated version on your TV. * If downloading version is more high than your TV have, TV can lost all channel data. In this case, you have to channel recover. if all channel data is cleared, you did ...
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LG Electronics 32LD320 32LD320-ZA - page 10
4. T otal Assembly line process 4.1. Adjustment Preparation · W/B Equipment condition CA210 : CH 9, Test signal : Inner pattern (85IRE) · Above 5 minutes H/run in the inner pattern. (“power on” key of adjust remote control) * Connecting picture of the measuring instrument (On Automatic control) Inside PATTERN is used when W/B is controlled. C ...
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LG Electronics 32LD320 32LD320-ZA - page 11
- Auto Download • After enter Service Mode by pushing “ADJ” key, • Enter EDID D/L mode. • Enter “START” by pushing “OK” key. * Edid data and Model option download (RS232) - Manual Download * Caution 1) Use the proper signal cable for EDID Download - Analog EDID : Pin3 exists - Digital EDID : Pin3 exists - Never connect HDMI & ...
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LG Electronics 32LD320 32LD320-ZA - page 12
- 12 - LGE Internal Use Only Copyright ©2010 LG Electronics. Inc. All right reserved. Only for training and service purposes 4.5. V -COM Adjust(Only 37/42/47LH4000-ZA) - Why need Vcom adjustment? A The Vcom (Common Voltage) is a Reference Voltage of Liquid Crystal Driving. -> Liquid Crystal need for Polarity Change with every frame. - Adjust se ...
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LG Electronics 32LD320 32LD320-ZA - page 13
- 13 - LGE Internal Use Only Copyright LG Electronics. Inc. All right reserved. Only for training and service purposes 300 200 801 802 803 804 805 806 520 530 540 550 400 900 120 510 500 320 310 LV 1 A2 A5 A10 Option Option Option EXPLODED VIEW Many electrical and mechanical parts in this chassis have special safety-related characteristics. These p ...
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LG Electronics 32LD320 32LD320-ZA - page 14
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. PCM_A[0] PCM_A[1] PCM_A[2] PCM_A[3] PCM_A[4] PCM_A[5] PCM_ ...
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LG Electronics 32LD320 32LD320-ZA - page 15
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. MAIN_2 SC1_CVBS_IN E21;9:O4 FE_VMAIN 10:AA8 AV_CVBS_IN 4:M ...
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LG Electronics 32LD320 32LD320-ZA - page 16
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. DDR2 SDDR_A[12] SDDR_A[11] SDDR_A[10] SDDR_A[9] SDDR_A[0] ...
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LG Electronics 32LD320 32LD320-ZA - page 17
Fiber Optic USB DOWN STREAM USB DOWN STREAM THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. INTERFACE JP41 ...
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LG Electronics 32LD320 32LD320-ZA - page 18
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. PCMCIA CI_ADDR[4] CI_DATA[7] CI_DATA[5] CI_ADDR[5] CI_DATA ...
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LG Electronics 32LD320 32LD320-ZA - page 19
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. HDMI GND D601 ENKMC2838-T112 A 1 C A 2 DDC_SDA_1 2:E10;AL9 ...
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LG Electronics 32LD320 32LD320-ZA - page 20
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. AMP 0.1uF C729 50V 0.1uF C749 50V 0.1uF C735 50V SPK_R+ AB ...
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LG Electronics 32LD320 32LD320-ZA - page 21
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. POWER PANEL_POWER +5V_ST +3.3V_ST +12V/+15V PANEL_CTL 1:AK ...
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LG Electronics 32LD320 32LD320-ZA - page 22
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. SCART GND C1103 330pF 50V SCART1_DET C1124 330pF 50V SC2_I ...
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LG Electronics 32LD320 32LD320-ZA - page 23
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. TUNER FE_TS_DATA[5] FE_TS_DATA[6] FE_TS_DATA[1] FE_TS_DATA ...
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LG Electronics 32LD320 32LD320-ZA - page 24
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM 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. LVB_3M LVB_0M LVB_1P LVB_2M LVB_CKP LVB_CKM LVB_4P LVB_0P ...
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LG Electronics 32LD320 32LD320-ZA - page 25
Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 26
Block Diagram Block Diagram RGB COMPONENT F-SCART AV3 BUF_TS_CLK/ERR/SYN/DATA[0] AV_CVBS_IN DDR2 SDRAM (1Gb) IC300 NAND Flash HYNIX IC102 USB Digital amp (NTP3100L) IC701 COMP_Y/ Pb/Pr SC1_CVBS_IN SC2_CVBS_IN I2S DSUB_ R/G/B Tuner (TDFW-G235D1) TU1000 LCD Panel - 19/22/26/32/37/42LH2000 - 32/37/42/47LH3000 - 32/37/42/47LH4000 74LVC541A Buffer IC502 ...
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LG Electronics 32LD320 32LD320-ZA - page 27
37 GIP Block Diagram 37 GIP Block Diagram TCON with FRC MST7327N IC101 M+S T-Con Block SPI_CZ/CK & DI/DO DDR_A_D[0:15] DDR2 SDRAM (512MB / 533MHz) HYNIX IC201 DDR_B_D[16:31] DDR_A_A[0:12] DDR_B_A[0:12] Serial Flash W25X32VSSIG IC102 DDR2 SDRAM (512MB / 533MHz) HYNIX IC202 Multi Channel DC/DC Converter TPS 65161 IC401 P-Gamma IC BUF16821 IC402 V ...
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LG Electronics 32LD320 32LD320-ZA - page 28
42/47 Normal Block Diagram 42/47 Normal Block Diagram TCON with FRC MST7327N IC101 SPI_CZ/CK & DI/DO DDR_A_D[0:15] DDR2 SDRAM (512MB / 533MHz) HYNIX IC201 DDR_B_D[16:31] DDR_A_A[0:12] DDR_B_A[0:12] Serial Flash W25X32VSSIG IC102 DDR2 SDRAM (512MB / 533MHz) HYNIX IC202 Multi Channel DC/DC Converter TPS 65162 IC401 P-Gamma IC BUF16821 IC402 VCC V ...
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LG Electronics 32LD320 32LD320-ZA - page 29
Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page Remarks 1 A. Video error No video/Normal audio 1 2 No video/No audio 2 3 Video error, video lag/stop 3 4 Color error 4 5 Vertical/Horizontal bar, residual image, light spot, external device color error 5 6 B. Power error No power 6 7 Off w ...
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LG Electronics 32LD320 32LD320-ZA - page 30
Normal audio Y N Move to No video/No audio No video Normal audio Check Back Light On with naked eye On Y N Check Power Board 12v,5v etc. Normal voltage Y N Replace Main Board Replace T-con Board or module And Adjust VCOM OR Repair Power Board or parts Check Power Board 20V /12V or 24v output Normal voltage Y Replace Inverter or module N Repair Powe ...
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LG Electronics 32LD320 32LD320-ZA - page 31
Normal voltage? Check various voltages of Power Board ( 5V,12V,20V or 24V …) No Video/ No audio Check and replace MAIN B/D Y Replace Power Board and repair parts N End Standard Repair Process A. Video error No video/ No audio Established date Revised date 2008. 3 .05 2/13 LCD TV Error symptom 2 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 32
A. Picture Problem Picture broken/ Freezing Y N N Check RF Signal level Normal Signal? Check RF Cable Connection 1. Reconnection 2. Install Booster Check S/W Version Booster menu On Off: Check Off On: Check S/W Upgrade Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) DVD Player ,Set-Top-Box, Different ...
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LG Electronics 32LD320 32LD320-ZA - page 33
Color error? Y N Check and replace Link Cable (LVDS) and contact condition Y N Replace Main B/D Color error? Check error color input mode Check color by input -External Input -COMPONENT -RGB -HDMI/DVI Y External device /Cable normal External Input/ Component error Check external device and cable Y External device /Cable normal RGB/ HDMI/DVI error C ...
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LG Electronics 32LD320 32LD320-ZA - page 34
Screen normal? N Y Check external device connection condition Y N Check and replace Link Cable Normal? Y N Screen normal? Replace Main B/D Replace module Check color condition by input -External Input -Component -RGB -HDMI/DVI End Vertical/Horizontal bar, residual image, light spot Request repair for external device A. Video error Vertical / Horizo ...
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LG Electronics 32LD320 32LD320-ZA - page 35
B. Power error No power Power LED On? Y N DC Power on by pressing Power Key On Remote control Y N Normal operation? Check Power On ‘”High ” Check Power cord was inserted properly Check Power LED Replace Power B/D Measure voltage of each output of Power B/D N Y Normal voltage? Replace Main B/D N Y OK? Replace Main B/D N Y Normal? Check ST-BY 5 ...
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LG Electronics 32LD320 32LD320-ZA - page 36
B. Power error Off when on, off while viewing, power auto on/off Error? N Y Check Power Off Mode Fix A/C code & Outlet and describe 3 wave length Check A/C code Check for 3 wave length Check outlet Replace Main B/D CPU Abnormal (If Power Off mode is not displayed) Check Power B/D voltage Y N Replace Main B/D Normal voltage? Replace Power B/D Re ...
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LG Electronics 32LD320 32LD320-ZA - page 37
No audio Screen normal Check user menu > Speaker off Off N Y Cancel OFF and describe Check audio B+ 20V or 24V of Power Board Normal voltage Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C. Audio error No audio/ Normal video Disconnection Established date Revised date 2008. 3 .05 ...
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LG Electronics 32LD320 32LD320-ZA - page 38
Wrecked audio/discontinuation/noise is same after “Check input signal ” compared to No audio C. Audio error Wrecked audio/ discontinuation/noise Wrecked audio/ Discontinuation/ Noise for all audio Check and replace speaker and connector Wrecked audio/ Discontinuation/ Noise only for D-TV Wrecked audio/ Discontinuation/ Noise only for Analog Wre ...
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LG Electronics 32LD320 32LD320-ZA - page 39
D. General Function Problem Remote control & Local switch checking Y N 1. Remote control (R/C) operating error Move Power problem Section 2. Local(Mechanical ) switch operating error Check R/C itself Operation Normal operating? Normal operating? Y Close Replace R/C If R/C operate, Explain the customer cause is interference from light in room. C ...
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LG Electronics 32LD320 32LD320-ZA - page 40
Check technical information - Fix information - S/W Version N Y Technical information? Check input signal Signal input? Y N External Input and Component Recognition error Check and fix external device/cable RGB,HDMI/ DVI, Optical Recognition error Replace Main B/D Replace Main B/D Fix in accordance with technical information D. Function error Exter ...
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LG Electronics 32LD320 32LD320-ZA - page 41
Check location of noise Identify nose type Circuit noise Replace inverter Replace LIPS B/D Mechanical noise Check location of noise OR When the nose is severe, replace the module (For models with fix information, upgrade the S/W or provide the description) OR If there is a “Tak T ak” noise from the cabinet, refer to the KMS fix information and ...
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LG Electronics 32LD320 32LD320-ZA - page 42
Replace module Zoom part with exterior damage Module damage Cabinet damage Replace cabinet Replace remote controller Remote controller damage Stand dent Replace stand F. Exterior defect Exterior defect Adjust VCOM Established date Revised date 2008. 3 .05 13/13 LCD TV Error symptom Standard Repair Process 13 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 43
LCD TV Repair Process Index - Trouble shooting by input block (Component level check) No. Symptom (L) Input Block Page Remark 1 Power Problem Power-up Boot fail 1~2 2 Video Problem No OSD 3~ 4 3 Digital TV 5 4 Analog TV 6 5 AV ( Scart / CVBS/ S-Video) 7~12 6 Component 1 3 7 RGB(D-SUB) 14~15 8 HDMI 16~17 9 Audio Problem All Input 18 10 Digital TV 1 ...
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LG Electronics 32LD320 32LD320-ZA - page 44
P800 Pin #7~#10 Voltage Level = 5V ? P800 Pin #2 Voltage level = 5V ? Check Power connector OK ? Replace Power Board YES NO Y E S P800 Pin #13, 14 = 12V P800 Pin #17, 18 = 24V ? NO Replace Power Board YES NO Replace MAIN B ’D Q801 MAIN B’D L803 = 3.3V ? Replace MAIN B ’D IC801 YES NO MAIN B ’D L813 = 1.26V ? Replace MAIN B ’D IC805 YES NO ...
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LG Electronics 32LD320 32LD320-ZA - page 45
Check Power connector OK ? Replace Power Board NO Y E S Replace Power Board NO Replace MAIN B ’D IC801 NO Replace MAIN B ’D IC805 NO Replace MAIN B ’D IC806 NO Replace MAIN B ’D IC100 NO Replace MAIN B ’D IC103 Serial Flash NO Replace MAIN B ’D IC300, IC301 DDR2 Memory NO Replace MAIN B ’D IC100 NO Making Revision 2009. 2 . 1 LCD TV S ...
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LG Electronics 32LD320 32LD320-ZA - page 46
P800 Pin #20 Voltage level = 2V Check Power connector OK ? Replace Power Board YES NO Y E S NO YES Replace MAIN B ’D Q802 MAIN B’D L1300 = 12V ? Replace MAIN B ’D Q806 NO Replace Main Board YES P800 Pin #13, 14 = 12V P800 Pin #17, 18 = 24V ? Check LVDS Cable OK ? YES Replace LVDS Cable NO Making Revision 2009. 2 . 1 LCD TV Symptom No OSD 26~4 ...
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LG Electronics 32LD320 32LD320-ZA - page 47
P801 Pin #9 Voltage level = 2V Check Power connector OK ? Replace Power Board YES NO YES NO YES Replace MAIN B ’D Q802 MAIN B’D L1300 = 12V ? Replace MAIN B’D Q806 NO Replace Main Board YES P801 Pin #1, 2 = 15V? Check LVDS Cable OK ? YES Replace LVDS Cable NO Making Revision 2009. 2 . 1 LCD TV Symptom No OSD 19~22LH2000 4/34 Downloaded From T ...
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LG Electronics 32LD320 32LD320-ZA - page 48
Check RF Cable MAIN B ’D L1201 = 5V ? YES MAIN B’D L1202 = 3.3V ? NO Replace MAIN B ’D IC809 YES NO Replace MAIN B ’D IC808 MAIN B ’D IC804 Pin #2 = 1.2V ? Replace MAIN B ’D IC804 YES NO YES MAIN B ’D R1210 Clock ? NO Replace MAIN B ’D TU1200 Making Revision 2009. 2 . 1 LCD TV Symptom Digital TV Video Problem 26~42LH2000 32~47LH3000 ...
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LG Electronics 32LD320 32LD320-ZA - page 49
Making Revision 2009. 2 . 1 LCD TV Symptom Analog TV Video Problem Check RF Cable MAIN B ’D L1201 = 5V ? YES MAIN B’D L1202 = 3.3V ? NO Replace MAIN B ’D IC809 YES NO Replace MAIN B ’D IC808 MAIN B ’D IC804 Pin #2 = 1.2V ? Replace MAIN B ’D IC804 YES NO YES MAIN B ’D R1210 Clock ? NO Replace MAIN B ’D TU1200 26~42LH2000 32~47LH3000/ ...
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LG Electronics 32LD320 32LD320-ZA - page 50
Check Signal format Is it supported? Check the SCART Cable YES MAIN B ’D JK1100 Check Replace MAIN B’ D JK11 00 YES NO Check MAIN B ’D R1117 Video Signal ? NO YES Check MAIN B ’D C210 Video Signal ? Replace MAIN B ’D C210 NO Replace MAIN B ’D IC 100 YES Making Revision 2009. 2 . 1 LCD TV Symptom AV1(Scart CVBS) No Video Problem 26~42LH2 ...
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LG Electronics 32LD320 32LD320-ZA - page 51
Check Signal format Is it supported? Check the SCART Cable YES Check MAIN B ’D JK1100 Replace MAIN B ’D JK1100 YES NO YES Check MAIN B ’D C200 (RED) C201 (GREEN) C202 (BLUE) Video Signal ? Replace MAIN B ’D C200, C201, C202 NO Replace MAIN B ’D IC 100 YES Making Revision 2009. 2 . 1 LCD TV Symptom AV1(Scart RGB) No Video Problem 26~42LH20 ...
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LG Electronics 32LD320 32LD320-ZA - page 52
Check Signal format Is it supported? Check the SCART Cable YES MAIN B ’D JK1101 Check Replace MAIN B’ D JK11 01 YES NO Check MAIN B ’D R1133 Video Signal ? NO YES Check MAIN B ’D C211 Video Signal ? Replace MAIN B ’D C211 NO Replace MAIN B ’D IC 100 YES Making Revision 2009. 2 . 1 LCD TV Symptom AV2 No Video Problem 26~42LH2000 32~47LH3 ...
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LG Electronics 32LD320 32LD320-ZA - page 53
Check Signal format Is it supported? Check the CVBS Cable YES MAIN B ’D JK402 Check Replace MAIN B ’D JK402 YES NO Check MAIN B ’D R400 Video Signal ? NO YES Check MAIN B ’D C217 Video Signal ? Replace MAIN B’D C217 NO Replace MAIN B ’D IC 100 YES Making Revision 2009. 2 . 1 LCD TV Symptom AV3(CVBS) No Video Problem 26~42LH2000 32~47LH3 ...
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LG Electronics 32LD320 32LD320-ZA - page 54
Check Spec (Refer to User Manual) Is it supported? Check the SCART Cable YES Check the Trouble Shooting Guide Analog TV No video YES Check MAIN B ’D R1205 Video Signal ? NO Replace MAIN B ’D Q1205 YES Check MAIN B ’D C1107 Video Signal ? NO MAIN B ’D JK1100 Check YES Making Revision 2009. 2 . 1 11/34 LCD TV Symptom AV1 No Video Out Problem ...
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LG Electronics 32LD320 32LD320-ZA - page 55
Check Spec (Refer to User Manual) Is it supported? Check the SCART Cable YES YES Check MAIN B ’D C1122 Video Signal ? NO MAIN B ’D JK1101 Check YES Replace MAIN B ’D IC 100 Making Revision 2009. 2 . 1 12/34 LCD TV Symptom AV2 No Video Out Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 56
Check Signal format Is it supported? Check the Component Cable YES MAIN B ’D JK400 Check Replace MAIN B ’D JK400 YES NO Check MAIN B ’D R419 Video Signal ? NO YES Check MAIN B ’D C209, C215 (Y) C216 (Pb ) C214 (Pr) Video Signal ? Replace MAIN B ’D C209 or C214 or C215 or C216 NO Replace MAIN B ’D IC 100 YES Making Revision 2009. 2 . 1 1 ...
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LG Electronics 32LD320 32LD320-ZA - page 57
Check Signal format Is it supported? Check the RGB Cable YES MAIN B ’D P400 Check Replace MAIN B ’D P400 YES NO NO YES Check MAIN B ’D C208 (Video) R246 (HSYNC) R245 (VSYNC) Replace MAIN B ’D C208 or R246 or R247 NO Replace MAIN B ’D IC 100 YES MAIN B ’D P400 Pin #2 Video signal ? R437 has Vsync ? R440 has Hsync ? Making Revision 2009. ...
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LG Electronics 32LD320 32LD320-ZA - page 58
Check Signal format Is it supported? Check the RGB Cable YES MAIN B ’D P400 Check Replace MAIN B ’D P400 YES NO NO YES Check MAIN B ’D C212 (RED) C207 (GREEN) C213 (BLUE) Video Signal ? Replace MAIN B ’D C212 or C207 or C213 NO Replace MAIN B ’D IC 100 YES MAIN B ’D P400 Pin #3 (BLUE) Pin #2 (GREEN) Pin #1 (RED) Video signal ? Making Re ...
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LG Electronics 32LD320 32LD320-ZA - page 59
Check Signal format Is it supported? Check the HDMI Cable YES YES Replace MAIN B ’D IC 100 Check the ADJUST MENU EDID OK ? YES Download EDID (Refer to Adjustment Spec) NO NO Replace MAIN B ’D IC107 (HDCP KEY) Making Revision 2009. 2 . 1 16/34 LCD TV Symptom HDMI 1~3 All No Video Problem HDMI1 – ALL MODELS HDMI2 – Except for 19/22LH20** HDMI ...
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LG Electronics 32LD320 32LD320-ZA - page 60
Check Signal format Is it supported? Check the HDMI Cable YES YES Replace MAIN B ’D IC 100 MAIN B ’D JACK Check JK600 -> HDMI1 JK601 -> HDMI2 JK602 -> HDMI3 YES _ This case is that HDMI Video doesn ’t display at the some HDMI input, not all. Making Revision 2009. 2 . 1 17/34 LCD TV Symptom HDMI1 or 2 or 3 No Video Problem HDMI1 – A ...
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LG Electronics 32LD320 32LD320-ZA - page 61
Check The Speaker Check Speaker Cable YES Check P700 Cable YES NO Replace MAIN B ’D IC 701 YES MAIN B ’D L705 Pin #1 L704 Pin #2 PWM Signal ? Replace Speaker NO Replace Speaker Cable NO CHECK MAIN B ’D JK700 or JK701 YES Replace MAIN B ’D JK700 or JK701 NO _ If headphone is connected, Speaker sound doesn ’ t work. Replace MAIN B ’D IC80 ...
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LG Electronics 32LD320 32LD320-ZA - page 62
Digital TV Video OK ? YES Replace MAIN B ’D IC 100 Making Revision 2009. 2 . 1 19/34 LCD TV Symptom Digital TV No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 63
MAIN B ’D TU1200 Pin #17 Signal (SIF) Replace MAIN B ’D TU1200 NO Analog TV Video OK ? YES Check MAIN B ’D C231 Signal (SIF) NO Replace MAIN B ’D IC100 YES Making Revision 2009. 2 . 1 20/34 LCD TV Symptom Analog TV No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 64
Check the SCART Cable YES Check MAIN B ’D C229, C230 MAIN B ’D C229 (Right Sound) C230 (Left Sound) signal ? YES NO Replace MAIN B ’D IC 100 AV1 Video OK ? YES Check MAIN B ’D JK1100 Replace MAIN B ’D JK 1100 NO YES Making Revision 2009. 2 . 1 21/34 LCD TV Symptom AV1 No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Manu ...
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LG Electronics 32LD320 32LD320-ZA - page 65
Check the SCART Cable YES Check MAIN B ’D C2008, C2009 MAIN B ’D C2008 (Right Sound) C2009 (Left Sound) signal ? YES NO Replace MAIN B ’D IC 100 AV2 Video OK ? YES Check MAIN B ’D JK1101 Replace MAIN B’D JK1101 NO YES Making Revision 2009. 2 . 1 22/34 LCD TV Symptom AV2 No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Ma ...
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LG Electronics 32LD320 32LD320-ZA - page 66
Check the CVBS Cable YES Check MAIN B ’D C2011, C2012 MAIN B ’D C2011 (Right Sound) C2012 (Left Sound) signal ? YES NO Replace MAIN B ’D IC 100 AV3 Video OK ? YES Check MAIN B ’D JK402 Replace MAIN B’D JK402 NO YES Making Revision 2009. 2 . 1 23/34 LCD TV Symptom AV3 No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Manua ...
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LG Electronics 32LD320 32LD320-ZA - page 67
Check the CVBS Cable YES Check MAIN B ’D C2013, C2014 MAIN B ’D C2013 (Right Sound) C2014 (Left Sound) signal ? YES NO Replace MAIN B ’D IC 100 Component Video OK ? YES Check MAIN B ’D JK400 Replace MAIN B’D JK400 NO YES Making Revision 2009. 2 . 1 24/34 LCD TV Symptom Component No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded F ...
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LG Electronics 32LD320 32LD320-ZA - page 68
Check the PC Audio Cable YES Check MAIN B ’D C2015, C2016 MAIN B ’D C2015 (Right Sound) C2016 (Left Sound) signal ? YES NO Replace MAIN B ’D IC 100 RGB Video OK ? YES Check MAIN B ’D JK401 Replace MAIN B’D JK401 NO YES Making Revision 2009. 2 . 1 25/34 LCD TV Symptom RGB, HDMI-PC No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded ...
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LG Electronics 32LD320 32LD320-ZA - page 69
HDMI Video OK ? YES Check the ADJUST MENU EDID OK ? YES Download EDID (Refer to Adjustment Spec) NO Check the HDMI Cable Replace MAIN B ’D IC100 YES Making Revision 2009. 2 . 1 26/34 LCD TV Symptom HDMI-DTV No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 70
Check the SCART Cable YES Replace MAIN B ’D IC1103 MAIN B’D R239 (Right Sound) R240 (Left Sound) signal ? NO YES Replace MAIN B ’D IC 100 Analog TV Audio OK YES Check MAIN B ’D JK1100 Replace MAIN B’D JK1100 NO YES Check the Trouble Shooting Guide Analog TV No video NO Making Revision 2009. 2 . 1 27/34 LCD TV Symptom AV1 No Audio Out Prob ...
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LG Electronics 32LD320 32LD320-ZA - page 71
Check the SCART Cable YES Replace MAIN B ’D IC1103 MAIN B’D R250 (Right Sound) R251 (Left Sound) signal ? NO YES Replace MAIN B ’D IC 100 Speaker Audio OK YES Check MAIN B ’D JK1101 Replace MAIN B ’D JK1101 NO YES Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009. 2 . 1 28/34 LCD TV Symptom AV2 No Audio Out ...
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LG Electronics 32LD320 32LD320-ZA - page 72
Check the Headphone Cable YES Replace MAIN B ’D IC700 MAIN B ’D R237 (Right Sound) R238 (Left Sound) signal ? NO YES Replace MAIN B ’D IC 100 Speaker Audio OK YES Check MAIN B ’D JK700 or JK701 Replace MAIN B ’D JK700 or JK701 NO YES Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009. 2 . 1 29/34 LCD TV Symp ...
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LG Electronics 32LD320 32LD320-ZA - page 73
Check the SPDIF Cable YES Check MAIN B ’D R230 PWM Signal ? Replace MAIN B ’D IC 100 Speaker Audio OK YES Check MAIN B ’D JK403 Replace MAIN B’D JK403 NO YES NO Check the Trouble Shooting Guide Related to Audio Problem NO Making Revision 2009. 2 . 1 30/34 LCD TV Symptom SPDIF No Audio Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From T ...
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LG Electronics 32LD320 32LD320-ZA - page 74
Check MAIN B ’D JK405 Pin #1 5V ? NO Check MAIN B ’D R848 12V ? Check that the USB Memory & HDD are supported by Spec (Refer to User Manual ’ s USB cautions) YES Check MAIN B ’D R801 5V ? Replace MAIN B ’D IC402 YES NO Replace MAIN B ’D IC808 YES YES Replace MAIN B ’D IC 100 Check MAIN B ’D JK405 OK ? YES NO Replace MAIN B ’D ...
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LG Electronics 32LD320 32LD320-ZA - page 75
Check IR B ’ D P1 Wafer & Connector Check MAIN B ’D P1304 Wafer & Connector YES NO Replace it YES Replace IR B ’D Making Revision 2009. 2 . 1 32/34 LCD TV Symptom Remote Control Problem 26~42LH2000 32~47LH3000/LH4000 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 76
Check IR B ’ D P1 Wafer & Connector Check MAIN B ’D P1305 Wafer & Connector YES NO Replace MAIN B ’D IC100 IR B’D IC1 Pin #3 Voltage 4V ? NO NO Replace it YES Replace IR B ’D I C1 NO Replace MAIN B ’D IC100 Making Revision 2009. 2 . 1 33/34 LCD TV Symptom Remote Control Problem 19~22LH2000 Downloaded From TV-Manual.com Manuals ...
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LG Electronics 32LD320 32LD320-ZA - page 77
Check IR B ’ D P1 Wafer & Connector Check MAIN B ’D P1304 Wafer & Connector YES YES NO Replace it Replace IR B ’D Making Revision 2009. 2 . 1 34/34 LCD TV Symptom Intelligent Sensor Problem 32~47LH4000 Downloaded From TV-Manual.com Manuals ...
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