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Internal Use Only
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
LED LCD TV
SERVICE MANUAL
CHASSIS : LB22E
MODEL : 55LM6200 55LM6200-TA
MODEL : 55LM620Y 55LM620Y-TA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67441812 (1201-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 LCD TV used LB22E 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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5. Component Video Input (Y, Cb/Pb, Cr/Pr) No. Resolution H-freq(kHz) V-freq(Hz) Porposed 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, DVD 625 Line 6 720×576 31.25 50.00 HDTV 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 1080i 1
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7. HDMI Input 7.1. DTV mode No. Resolution H-freq(kHz) V-freq.(kHz) Proposed Proposed 1. 720*480 31.469 / 31.5 59.94 / 60 27.00/27.03 SDTV 480P 2. 720*576 31.25 50 54 SDTV 576P 3. 1280*720 37.500 50 74.25 HDTV 720P 4. 1280*720 44.96 / 45 59.94 / 60 74.17/74.25 HDTV 720P 5. 1920*1080 33.72 / 33.75 59.94 / 60 74.17/74.25 HDTV 1080I 6. 1920*1080 28.125 50.00 74.25 HDTV 1080I 7. 1920*1080 26.97 / 27 23.97 / 24 74.17/74.25 HDTV 1080P 8. 1920*1080 33.716/ 33.75 29.976/30.00 74.25 HDTV 1080P 9. 1920*10
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ADJUSTMENT INSTRUCTION 1. Application Range 3. Main PCB check process This specification sheet is applied to all of the LED LCD TV ▪ APC - After Manual-Insert, executing APC with LB22E chassis. * Boot file Download (1) Execute ISP program "Mstar ISP Utility" and then click "Config" tab. (2) Set as below, and then click "Auto Detect" and check "OK" 2. Designation message. (1) T he adjustment is according to the order which is If "Error" is displayed, check connection between computer, desig
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3.1.2. External mode * USB DOWNLOAD(*.epk file download) * Equipment: MSPG-925 series Pattern Generator , RS-232C Jig (1) Put the USB Stick to the USB socket. (1) Input the signal for TV SET by using Pattern Generator (2) Automatically detecting update file in USB Stick. (Model : 225, Pattern No : 65)_1080P - If your downloaded program version in USB Stick is Low, (2) Change the ADC type “External” by using “►”key. it didn't work. But your downloaded version is High, USB (3) Enter “Start”
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* Auto-control interface and directions 4. Total Assembly line process (1) Adjust in the place where the influx of light like floodlight 4.1. Adjustment Preparation around is blocked. (Illumination is less than 10 lux). ▪ W/B Equipment condition (2) Adhere closely the Color analyzer(CA210) to the module CA210 less than 10 cm distance, keep it with the surface of the : CCFL/EEFL -> CH9, Test signal: Inner pattern(80IRE) Module and Color analyzer's prove vertically.(80° ~ 100°). LED -> CH14
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4.5.2. Manual Download 4.2. DPM operation confirmation (Only Apply for MNT Model) 1) Use the proper signal cable for EDID Download Check if Power LED Color and Power Consumption operate - Analog EDID : Pin3 exists as standard. - Digital EDID : Pin3 exists ■ Set Input to RGB and connect D-sub cable to set 2) Never connect HDMI & D-sub Cable at the same time. ■ Measurement Condition: (100~240V@ 50/60Hz) 3) Use the proper cables below for EDID Writing. ■ Confirm DPM operation
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(3) Detail EDID Options are below 4.6.2. Comand Set a. Product ID Adjust mode CMD(hex) LENGTH(hex) Description HEX EDID Table DDC Function EEPROM WRITE A0h 84h+n n-bytes Write (n = 1~16) 0001 01 00 Analog/Digital * Description FOS Default write : <7mode data> write Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0, b. Serial No: Controlled on production line. Phase c. Month, Year: Controlled on production line: Data write : Model Name and Serial Number write in EEPROM,. ex) Week : '
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Step 4) If the system finds any AP like blow PIC, it is working 4.8. 3D function test well. (Pattern Generator MSHG-600, MSPG-6100[Support HDMI1.4]) * HDMI mode No. 872 , pattern No.83 (1) Please input 3D test pattern like below . (2) When 3D OSD appear automatically, then select OK key. 4.10. Magic Motion Remote control test (1) Equipment : RF Remote control for test, IR-KEY-Code Remote control for test (2) You must confirm the battery power of RF-Remote control before test(recommend that
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SCREW ASSEMBLY WORKING GUIDE ■ Screw specification and application situation AA AA AA AA AA AA BB BB AA AA AA AA AA AA BB BB AA AA CC C C C C C C C C C C C C C C DDD DDD DDD DDD 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 ri
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BLOCK DIAGRAM Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 16 - Only for training and service purposes SYSTEM SYSTEM DDR3 X DDR3 X 1600 X 1600 X 16 16 SYSTEM (2Gb) (2Gb) DDR3 X Air/ Cable 1600 X 16 SI2176 (2Gb) DIF(+/-) T/C Demod Silicon TUNER DDR CVBS SYSTEM CVBS CONTROLER A/B SIF DDR3 X TDSS-G151D Audio 1600 X 16 Half NIM (2Gb) USB1 USB2 SYSTEM EEPROM X 1 USB USB3 (256Kb) USB_WIFI Side HDMI1 eMMC X 1 (HDCP (4GB) HDMI2 EEPROM) HDMI HDMI3 MUX L LV V
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EXPLODED VIEW 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 X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © LG Electronics. In
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EAX6430790* : LD22* / LC22* EAX6443420* : LT22* / LJ22* / LA22* / LB22* Crystal Matching Test result : 27pF -> 20pF -> 24pF IC104-*1 IC104-*2 M24256-BRMN6TP R1EX24256BSAS0A X-TAL +3.3V_NORMAL +3.3V_NORMAL X100 E0 VCC A0 VCC IC +3.3V_NORMAL 1 8 1 8 NVRAM 27MHz R119 E1 WC A1 WP 2 7 2 7 MT5369_XTAL_IN MT5369_XTAL_OUT E2 SCL A2 SCL C115 0 3 6 3 6 C113 24pF 24pF Close to eMMC Flash +3.3V_NORMAL VSS SDA VSS SDA R103 R105 IC104 4 5 4 5 MTK_JTAG AT24C256C-SSHL-T MTK_JTAG (IC8100) 4.7K 4.7K AR100 R146 R1
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PLACE AT JACK SIDE C319 1608 sizs For EMI 10uF 16V R314 PC_L_IN PC_L_IN_SOC 0 1608 sizs For EMI R300 R333 C300 C314 470K AV1_CVBS_IN AV1_CVBS_IN_SOC 560pF 100pF 120ohm OPT 50V 50V C344 C348 R330 OPT OPT ZD300 C340 27pF 100pF 75 5.48VTO5.76V 47pF 50V 50V 1% C320 50V OPT 1608 sizs For EMI ZD301 10uF 5.48VTO5.76V R336 16V PC_R_IN PC_R_IN_SOC 1.0Vpp 1608 sizs For EMI 0 0 R374 R301 C301 C315 COMP1_Y COMP1_Y_SOC 470K 560pF 100pF OPT 50V 50V C388 C394 ZD302 C384 OPT OPT R355 27pF 27pF 5.48VTO5.76V 75
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+1.2V_MTK_CORE 5600mA +3.3V_NORMAL VDD3V3 60mA L500 BLM18PG121SN1D IC105 C524 C506 C505 C529 C532 C535 IC105 C500 C503 C510 C504 LGE2112 10uF 10uF 10uF 0.1uF 0.1uF 0.1uF LGE2112 10uF 10uF 0.1uF 2.2uF +1.2V_MTK_CORE +1.2V_MTK_CORE AR7 AC22 VCCK_43 VCCK_31 R2 R6 AT7 AC23 DVSS_51 DVSS_55 R3 R20 VCCK_45 VCCK_32 AU7 AD24 DVSS_52 DVSS_62 VCCK_47 VCCK_36 J4 T20 AP8 P23 DVSS_37 DVSS_73 R4 U20 VCCK_42 VCCK_8 AR8 R24 DVSS_53 DVSS_83 +1.2V_MTK_CORE VCCK_44 VCCK_10 Y4 V20 AT8 T24 DVSS_107 DVSS_92 F5 W20 VCC
