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Internal Use Only
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LED LCD TV
SERVICE MANUAL
CHASSIS : LB21B
MODEL : 47LS4600/460Y/4610
MODEL : 47LS4600/460Y-TA 47LS4610-TC
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67440119 (1202-REV00) Printed in Korea
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CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ........................................................................ 3 SERVICING PRECAUTIONS .................................................................... 4 SPECIFICATION ....................................................................................... 6 ADJUSTMENT INSTRUCTION ................................................................ 9 SC
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SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. General Guidance Leakage Current Hot Check
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SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service 2. After removing an electrical assembly equipped with ES manual and its supplements and addenda, read and follow the devices, place the assembly on a conductive surface such as SAFETY PRECAUTIONS on page 3 of this publication. aluminum foil, to prevent electrostatic charge buildup or expo- NOTE: If unforeseen circumstances create conflict between the sure of the assembly. following servicing precautions and any
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IC Remove/Replacement 3. Solder the connections. Some chassis circuit boards have slotted holes (oblong) through CAUTION: Maintain original spacing between the replaced which the IC leads are inserted and then bent flat against the cir- component and adjacent components and the circuit board to cuit foil. When holes are the slotted type, the following technique prevent excessive component temperatures. should be used to remove and replace the IC. When working with boards using the familiar r
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SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification is applied to the LB21B chassis. 1) Performance: LGE TV test method followed 2) Demanded other specification - Safety : CE, IEC specification 2. Requirement for Test - EMC : CE, IEC Each part is tested as below without special appointment. 1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 5 °C 2) Relative Humidity: 65 % ± 10 % 3) Po
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5. Component Video Input (Y, PB, PR) No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed 1 720*480i 15.73 59.94 13.500 SDTV, DVD 480I(525I) 2 720*480i 15.73 60.00 13.514 SDTV, DVD 480I(525I) 3 720*576i 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz 4 720*480p 31.47 59.94 27.000 SDTV 480P 5 720*480p 31.50 60.00 27.027 SDTV 480P 6 720*576p 31.25 50.00 27.000 SDTV 576P 50Hz 7 1280*720 44.96 59.94 74.176 HDTV 720P 8 1280*720 45.00 60.00 74.250 HDTV 720P 9 1280*720 37.50 50.00 74.25 HDTV 7
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7. HDMI Input (1) DTV Mode Pixel No. Resolution H-freq(kHz) V-freq.(kHz) Proposed Remarks clock(MHz) 1 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 2 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I) Spec. out but display 3 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz 4 720*480 31.47 59.94 27 SDTV 480P 5 720*480 31.5 60.00 27.027 SDTV 480P 6 720*576 31.25 50.00 27 SDTV 576P 7 1280*720 44.96 59.94 74.176 HDTV 720P 8 1280*720 45 60.00 74.25 HDTV 720P 9 1280*720 37.5 50.00 74.25 HDTV 720
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ADJUSTMENT INSTRUCTION (4) Click "Connect" tab. If "Can't" is displayed, check connection 1. Application Range between computer, jig, and set. This specification sheet is applied to all of the LED LCD TV with LB21B chassis. (2) (3) 2. Designation (1) The adjustment is according to the order which is designated and which must be followed, according to the plan which can be changed only on agreeing. (2) Power adjustment : Free Voltage. (3) Magnetic Field Condition: Nil. (4) Input signa
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(3) Show the message "Copying files from memory". Using "power on" key of the Adjustment remote control, power on TV. * ADC Calibration Protocol (RS232) NO Item CMD 1 CMD 2 Data 0 Enter Adjust When transfer the ‘Mode In’, A A 0 0 Adjust MODE ‘Mode In’ Carry the command. Automatically adjustment ADC adjust ADC Adjust A D 1 0 (The use of a internal pattern) Adjust Sequence ▪ aa 00 00 [Enter Adjust Mode] ▪ xb 00 40 [Component1 Input (480i)] ▪ ad 00 10 [Adjust 480i Comp1] (4) Updating
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3.3. LAN Inspection 4. Total Assembly line process 3.3.1. Equipment & Condition 4.1. Adjustment Preparation ▪ Each other connection to LAN Port of IP Hub and Jig ▪ W/B Equipment condition CA210 : CCFL/EEFL -> CH9, Test signal: Inner pattern(80IRE) LED -> CH14, Test signal: Inner pattern(80IRE) ▪ Above 5 minutes H/run in the inner pattern. ("power on" key of Adjustment remote control)(Only EEFL) X=0.269 (±0.002) Cool 13,000 K Y=0.273 (±0.002) X=0.285 (±0.002) Medium 9,300 K Inne
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▪ Auto adjustment Map(RS-232C) 4.2. EDID DATA RS-232C COMMAND (1) All Data : HEXA Value [CMD ID DATA] (2) Changeable Data : Wb 00 00 White Balance Start *: Serial No : Controlled / Data:01 Wb 00 ff White Balance End **: Month : Controlled / Data:00 ***: Year : Controlled RS-232C COMMAND CENTER ****: Check sum [CMD ID DATA] (DEFAULT) MIN MAX Cool Mid Warm Cool Mid Warm 4.2.1. Auto Download R Gain jg Ja jd 00 172 192 192 192 ▪ After enter Service Mode by pushing "ADJ" key. G Gain jh Jb je 00 1
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(2) FHD 8 bit HDMI EDID data 4.3. Model name & Serial number D/L 3D 0 1 2 3 4 5 6 7 8 9 A B C D E F ▪ Press "Power on" key of service remote control. 0 00 FF FF FF FF FF FF 00 1E 6D A B (Baud rate : 115200 bps) 10 C 01 03 80 A0 5a 78 0A EE 91 A3 54 4C 99 26 ▪ Connect RS232 Signal Cable to RS-232 Jack. ▪ Write Serial number by use RS-232. 20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80 ▪ Must check the serial number at the Product/Service info.. 30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58
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* Manual Download(Model Name and Serial Number) If the TV set is downloaded by OTA or Service man, sometimes model name or serial number is initialized.(Not always) There is impossible to download by bar code scan, so It need Manual download. 1) Press the "Instart" key of Adjustment remote control. 2) Go to the menu "6.Model Number D/L" like below photo. 3) Input the Factory model name or Serial number like photo. 4) Check the model name Instart menu. → Factory name displayed. 5) C heck the
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SCREW ASSEMBLY WORKING GUIDE ■ Screw specification and application situation AA AA AA AA AA AA BB BB AA C C AA AA AA AA BB BB AA C C C C C C C C C C C C C C C C D D D D D D D D Check Screw Type When Screw is assembled at 'A' Part. If 'C' Screw is used at the 'A' part, Module will get damaged. Copyright © LG Electronics. Inc. All rig
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TROUBLE SHOOTING 1. Power-up boot check No ok ok Check stand-by Voltage. Main B/D 3.5V Line Check Power connector Replace Power board. P401 or P404 9~12pin : +3.5V_ST Short Check ok No Check X201 clock Replace X201 24 MHz ok No No Check P401 or P404 PWR_ON. Re-download software. Replace Mstar(IC101) or Main board 1pin : 3.3V ok No Check Multi Voltage Replace Power Board P401 or P404 2~4pin:24V 17, 19, 21 pin:12V ok Check IC402/3/7 Output Voltage IC402 : 2.5V No Replace IC402/3/7, Q403 IC403 :
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2. Digital TV Video Check RF Cable & Signal ok No Check Tuner 3.3V Power Replace L3703 L3703 ok No Check Tuner 1.8V Power Replace IC3703 IC3703 2 pin : 1.8V ok No Check IF_P/N Signal Bad Tuner. Replace Tuner. TU3700 10/11 Pin ok No Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. 3. Analog TV Video Check RF Cable & Signal ok No Check Tuner 3.3V Power Replace L3703 L3703 ok No Check Tuner 1.8V Power Replace IC3703 . IC3703 2 pin : 1.8V ok No Check CVBS Signal Bad Tuner. Replace Tun
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4. AV Video Check input signal format. Is it supported? ok Check AV Cable for damage for damage or open conductor ok No Check JK1601 CVBS Signal Line Replace Jack JK1601 R246 ok No Check CVBS_DET Signal Replace L1603 ok No Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. 5. Component Video Check input signal format. Is it supported? ok Check Component Cable for damage or open conductor. ok No Check JK1601 Replace Jack JK1601 Y/PB/PR signal Line ok No Check COMP_DET Signal Replace L16
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6. RGB Video Check input signal format. Is it supported? ok Check RGB Cable conductors for damage or open conductor ok Check EDID No I2C Signal re-download EDID data ,Replace Mstar(IC101) or Main Board JK1104 Pin12, 15 (SDA,SCL) ok No Check JK1104 Replace Jack H/V_Sync/R/G/B Signal Line ok No Check DSUB_DET Replace R1146 or R1147 ok No Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 19 - Only for trainin
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7. HDMI Video Check input signal format. Is it supported? ok Check HDMI Cable conductors for damage or open conductor. ok Check EDID No JK801, JK802, JK803 Replace the defective IC or re-download EDID data Pin 15, 16 I2C Signal ok No Check JK801, JK802, JK803 Replace Jack ok No Check HDMI_DET(HPD) Replace R830,R828,R862 ok No No Check other set Check HDMI Signal Replace Main Board If no problem, check signal line ok No Check Mstar LVDS Output Replace Mstar(IC101) or Main Board. Copyright © L
