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Internal Use Only
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LED LCD TV
SERVICE MANUAL
CHASSIS : LD23E
MODEL : 55LM960V 55LM960V-ZB
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67361003 (1203-REV00) Printed in Korea
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CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ........................................................................ 3 SERVICING PRECAUTIONS .................................................................... 4 SPECIFICATION ....................................................................................... 6 ADJUSTMENT INSTRUCTION .............................................................. 14 EXP
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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 LCD TV used LD23E 1) Performance: LGE TV test method followed chassis. 2) Demanded other specification - Safety : CE, IEC specification - EMC : CE, IEC 2. Requirement for Test - Wireless : Wireless HD Specification (Option) Each part is tested as below without special appointment. 1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F
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No. Item Specification Remarks 3 Receiving system Analog : Upper Heterodyne ► DVB-T Digital : COFDM, QAM - Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32 - Modulation : Code Rate QPSK : 1/2, 2/3, 3/4, 5/6, 7/8 16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8 64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8 ► DVB-T2 - Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256, - Modulation : Code Rate QPSK : 1/2, 2/5, 2/3, 3/4, 5/6 16-QAM : 1/2, 2/5, 2/3, 3/4, 5/6 64-QAM : 1/2, 2/5, 2/3
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5. Component Video Input (Y, Cb/Pb, Cr/Pr) No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock 1. 720×480 15.73 60.00 SDTV, DVD 480i 2. 720×480 15.63 59.94 SDTV, DVD 480i 3. 720×480 31.47 59.94 480p 4. 720×480 31.50 60.00 480p 5. 720×576 15.625 50.00 SDTV 576i 6. 720×576 31.25 50.00 SDTV 576p 7. 1280×720 45.00 50.00 HDTV 720p 8. 1280×720 44.96 59.94 HDTV 720p 9. 1280×720 45.00 60.00 HDTV 720p 10. 1920×1080 31.25 50.00 HDTV 1080i 11. 1920×1080 33.75 60.00 HDTV 1080i 12. 1920×1080 33.72 59.94 HDTV 1
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7. HDMI Input No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC Proposed HDMI-PC DDC 1 720*400 31.468 70.08 28.321 Х 2 640*480 31.469 59.94 25.17 VESA O 3 800*600 37.879 60.31 40.00 VESA O 4 1024*768 48.363 60.00 65.00 VESA(XGA) O 5 1360*768 47.72 59.8 84.75 WXGA O 6 1280*1024 63.595 60.0 108.875 SXGA O 7 1920*1080 67.5 60.00 148.5 WUXGA O 8 1360*768 47.712 60.015 85.5 VESA(WXGA) O 9 1920*1080 67.5 60.00 148.5 WUXGA(CEA861D) O HDMI-DTV 1 640*480 31.469 / 31.5 59.94/ 60 25.125 1 SDTV 48
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8. 3D Mode 8.1. RF Input(3D supported mode manually) No. Resolution Proposed 3D input proposed mode 2D to 3D 1080I 1 HD Side by Side(Half) 720P Top & Bottom 576P 2 SD 2D to 3D 576I 8.2. RF Input(3D supported mode automatically) No. Signal 3D input proposed mode Side by Side(Half), 1 Frame Compatible Top & Bottom 8.3. HDMI Input 8.3.1. HDMI 1.3 (3D supported mode manually) No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 3D input proposed mode 2D to 3D Side by Side(half), 1 1280*
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8.3.2. HDMI 1.4b (3D supported mode automatically) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC 3D input proposed mode Proposed Top-and-Bottom Secondary(SDTV 480P) 1 31.469 / 31.5 59.94/ 60 25.125 1 Side-by-side(half) Secondary(SDTV 480P) 640*480 Frame packing Secondary(SDTV 480P) 2 62.938/63 59.94/ 60 50.35/50.4 1 Line alternative (SDTV 480P) 3 31.469 / 31.5 59.94/ 60 50.35/50.4 1 Side-by-side(Full) (SDTV 480P) Top-and-Bottom Secondary(SDTV 480P) 4 31.469 / 31.5 59.94 / 60 27.00/
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8.4. HDMI-PC Input (3D) (3D supported mode manually) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed 2D to 3D, Side by Side(half) 1 1024*768 48.36 60 65 HDTV 768P Top & Bottom 2D to 3D, Side by Side(half) 2 1360*768 47.71 60 85.5 HDTV 768P Top & Bottom 2D to 3D, Side by Side(half) Top & Bottom, Checker Board, 3 1920*1080 67.500 60 148.50 Single Frame Sequential, HDTV 1080P Row Interleaving, Column Interleaving 640*350 720*400 4 Others - - - 2D to 3D 640*48
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8.7. USB Input(3D) (3D supported mode manually) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed 2D to 3D, Side by Side(Half), Top & Bottom, Checkerboard, 1 1920*1080 33.75 30 74.25 HDTV 1080P Row Interleaving, Column Interleaving (Photo : side by Side(half), Top & Bottom) 8.8. USB Input(3D) (3D supported mode automatically) No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed Side by Side(Half), Top & Bottom, 1 1920*1080
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ADJUSTMENT INSTRUCTION 3.1.3. Adjustment 1. Application Range (1) Adjustment method This specification sheet is applied to all of the LED LCD TV - Using RS-232, adjust items in the other shown in with LD23E chassis. "3.1.3.3)" (2) Adj. protocol 2. Designation Protocol Command Set ACK (1) Because this is not a hot chassis, it is not necessary to Enter adj. mode aa 00 00 a 00 OK00x use an isolation transformer. However, the use of isolation xb 00 04 b 00 OK04x (Adjust 480i, 1080p Comp1 ) Sou
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3.3. LAN Inspection 3.4. LAN PORT INSPECTION(PING TEST) Connect SET → LAN port == PC → LAN Port 3.3.1. Equipment & Condition ▪ Each other connection to LAN Port of IP Hub and Jig SET PC 3.4.1. Equipment setting (1) Play the LAN Port Test PROGRAM. (2) Input IP set up for an inspection to Test Program. *IP Number : 12.12.2.2 3.4.2. LAN PORT inspection(PING TEST) (1) Play the LAN Port Test Program. (2) Connect each other LAN Port Jack. 3.3.2. LAN inspection solution (3) Play Test (F9) button and co
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* Manual Download (Model Name and Serial Number) 3.6.2. Check the method of CI+ key value(RS232) If the TV set is downloaded by OTA or service man, sometimes 1) Into the main ass’y mode(RS232: aa 00 00) model name or serial number is initialized.(Not always) CMD 1 CMD 2 Data 0 It is impossible to download by bar code scan, so It need A A 0 0 Manual download. 1) Press the "Instart" key of Adjustment remote control. 2) Go to the menu "7.Model Number D/L" like below photo. 2) Check the mothed of
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▪ Reference 4. Manual Adjustment - HDMI1 ~ HDMI4 / RGB * A DC adjustment is not needed because of OTP(Auto ADC - I n the data of EDID, bellows may be different by S/W or adjustment) Input mode. 4.1 EDID(The Extended Display Identification ⓐ Product ID ⓑ Serial No: Controlled on production line. Data)/DDC(Display Data Channel) download ⓒ Month, Year: Controlled on production line: 4.1.1. Overview ex) Monthly : ‘01’ → ‘01’ It is a VESA regulation. A PC or a MNT will display an optimal
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# HDMI 3(C/S : 9D 9A) 4.2. White Balance Adjustment EDID Block 0, Bytes 0-127 [00H-7FH] 4.2.1. Overview 0 1 2 3 4 5 6 7 8 9 A B C D E F ▪ W/B adj. Objective & How-it-works 00 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 (1) Objective: To reduce each Panel's W/B deviation 10 01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 (2) How-it-works : When R/G/B gain in the OSD is at 192, it 20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80 means the panel is at its Full Dynamic Range. In order to 3
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Ex) wb 00 00 -> Begin white balance auto-adj. ▪ Adjustment condition and cautionary items wb 00 10 -> Gain adj. 1) Lighting condition in surrounding area ja 00 ff -> Adj. data Surrounding lighting should be lower 10 lux. Try to jb 00 c0 isolate adj. area into dark surrounding. ... 2) Probe location ... : Color Analyzer(CA-210) probe should be within 10 cm wb 00 1f → Gain adj. completed and perpendicular of the module surface (80° ~ 100°) *(wb 00 20(Start), wb 00 2f(end))
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4.3. EYE-Q function check 4.4. Local Dimming Function Check (1) Turn on TV. Step 1) Turn on TV. (2) Press EYE key of Adjustment remote control. Step 2) A t the Local Dimming mode, module Edge Backlight moving right to left Back light of IOP module moving. Step 3) Confirm the Local Dimming mode. Step 4) Press "exit" key. (3) Cover the Eye Q II sensor on the front of the using your hand and wait for 6 seconds. (4) Confirm that R/G/B value is lower than 10 of the "Raw Data (Sensor data, Back l
