LG 32CS460 Service Manual

[Page 1] LG 32CS460

Printed in KoreaP/NO : MFL67360712 (1203-REV00) CHASSIS : LD21C MODEL : 32CS460/460S/460T/463/465 MODEL : 32CS460/460S/460T/463/465-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. LCD TV SERVICE MANUAL North/Latin...

[Page 2] LG 32CS460

- 2 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 SAFETY PR...

[Page 3] LG 32CS460

- 3 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified ...

[Page 4] LG 32CS460

- 4 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, re...

[Page 5] LG 32CS460

- 5 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and th...

[Page 6] LG 32CS460

- 6 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement . 1. Application range Th...

[Page 7] LG 32CS460

- 7 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Item Specication Remarks 2 Broadcasting system 1) PAL-BG 2) PAL-DK 3) PAL-I/I’ 4) SECAM L/L’ 5) DVB-T/T2/C/S 3 Rec...

[Page 8] LG 32CS460

- 8 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5. Video resolutions (2D) 5.1. Component Input (Y, CB/PB, CR/PR) 5.2. RGB Input (PC) – LS35/LS34/CS46 series models are not...

[Page 9] LG 32CS460

- 9 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5.3. HDMI Input(PC/DTV) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark PC(DVI) DDC 1 640*350 31.468 ...

[Page 10] LG 32CS460

- 10 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LCD TV with LD21C ...

[Page 11] LG 32CS460

- 11 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.1. ADC Process (1) ADC - Enter Service Mode by pushing "ADJ" key, - Enter Internal ADC mode by pushing "�...

[Page 12] LG 32CS460

- 12 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.4 Function Check - Check display and sound ■ Check Input and Signal items. 1) TV 2) AV (SCART / CVBS) 3) COMPONENT (480...

[Page 13] LG 32CS460

- 13 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.2. EYE-Q function check (1) Turn on TV. (2) Press EYE key of Adjustment remote control. (3) Cover the Eye Q II senso...

[Page 14] LG 32CS460

- 14 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5. HI-POT Test 5.1. HI-POT auto-check preparation - Check the POWER cable and SIGNAL cable insertion condition 5.2. HI-POT ...

[Page 15] LG 32CS460

- 15 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 7. MAC Address & CI+ key download 7.1 MAC Address 7.1.1 Equipment & Condition ▪ Play file : Serial.exe ▪ MAC Ad...

[Page 16] LG 32CS460

- 16 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Ethernet RGB PC SPDIF Component1 HDMI1/2(DVI) PC/DVI Audi I IF +/- TU_CVBS SIF L/R LG2111A IC101 SERIAL FLASH IC1401 (8M bit...

[Page 17] LG 32CS460

- 17 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Ethernet RGB PC SPDIF Component1 HDMI1/2(DVI) TDSN TDSN - - G301D G301D (LGIT) (LGIT) PC/DVI Audi In TU_CVBS SIF L/R LG2111A...

[Page 18] LG 32CS460

- 18 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Ethernet RGB P SPDIF Component1 HDMI1/2(DVI) TDSQ TDSQ - - G001D G001D (LGIT) (LGIT) PC/DVI Au TU_CVBS SIF L/R SERIAL FLASH ...

[Page 19] LG 32CS460

- 19 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes LV1 300 200 800 540 521 530 550 810 120 510 400 900 910 A2 A21 A4 A5 A10 * Set + Stand * Stand Base + Body 310 EXPLODED VIEW...

[Page 20] LG 32CS460

THERMAL THERMAL THERMAL 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 ...

[Page 21] LG 32CS460

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 CO...

[Page 22] LG 32CS460

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 CO...

[Page 23] LG 32CS460

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 CO...

[Page 24] LG 32CS460

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 CO...

[Page 25] LG 32CS460

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 CO...

[Page 26] LG 32CS460

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 CO...

[Page 27] LG 32CS460

THERMAL 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 CRI...

[Page 28] LG 32CS460

THERMAL 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 CRI...

[Page 29] LG 32CS460

TH ER MA L 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 ...

[Page 30] LG 32CS460

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 CO...

[Page 31] LG 32CS460

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 CO...

[Page 32] LG 32CS460

US B DO WN S TR EA M 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 SPE...

[Page 33] LG 32CS460

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 CO...

[Page 34] LG 32CS460

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 CO...

[Page 35] LG 32CS460

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 CO...

[Page 36] LG 32CS460

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 CO...

[Page 37] LG 32CS460

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[Page 38] LG 32CS460

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 Tuning fail, Picture broken/ Freezing 3, 4 4 Color error 5 5 Ver...

[Page 39] LG 32CS460

Contents of LCD TV Standard Repair Process Detail Technical Manual No. Error symptom Content Page Remarks 1 A. Video error_ No video/Normal audio Check LCD back light with naked eye A1 2 LED driver B+ 24V measuring method A2 3 Check White Balance ...

[Page 40] LG 32CS460

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,3.5v etc. Normal voltage Y N Replace T-con Board or module Repair Power Board or parts Check Power Board 24v outpu...

[Page 41] LG 32CS460

Normal voltage? Check various voltages of Power Board ( 3.5V,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 ☞A4 Establi...

[Page 42] LG 32CS460

A. Video error Picture broken/ Freezing Y N ☞ A5 N Check RF Signal level Normal Signal? Check RF Cable Connection 1. Reconnection 2. Install Booster Check S/W Version S/W Upgrade Check whether other equipments have problem or not. (By connecting ...

[Page 43] LG 32CS460

A. Video error Tuning fail, Picture broken/ Freezing Y N ☞ A5 Check RF Signal level Normal Signal? Check S/W Version S/W Upgrade SVC Bulletin? Normal Picture? Y N Y Close Check RF signal cable (DVB satellite signal or not) Check whether other eq...

[Page 44] LG 32CS460

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 Externa...

[Page 45] LG 32CS460

Screen normal? N Y Check external device connection condition Y N Check and replace Link Cable Normal? Y Screen normal? Replace module Check color condition by input -External Input -Component -RGB -HDMI/DVI End Vertical/Horizontal bar, residua...

[Page 46] LG 32CS460

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 o...

[Page 47] LG 32CS460

B. Power error Off when on, off while viewing, power auto on/off Error? N Y Check Power Off Mode Fix A/C cord & Outlet and check each 3 phase out Check A/C cord Check for all 3- phase power out Check outlet Replace Main B/D CPU Abnormal (If Po...

[Page 48] LG 32CS460

No audio Screen normal Check user menu > Speaker off Off N Y Cancel OFF Check audio B+ 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. Au...

[Page 49] LG 32CS460

→ abnormal 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 W...

[Page 50] LG 32CS460

D. Function error Remote control & Local switch checking Y N 1. Remote control(R/C) 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 f...

[Page 51] LG 32CS460

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 err...

[Page 52] LG 32CS460

Check location of noise Identify nose type Circuit noise Replace PSU (with LED driver) Replace LED driver Mechanical noise Check location of noise OR ※ When the nose is severe, replace the module (For models with fix information, upgrade the...

[Page 53] LG 32CS460

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 Established date Revised date 14/14 LCD TV...