Related Manuals for LG 20HIZ20
Summary of Contents for LG 20HIZ20
- Page 1 LCD TV SERVICE MANUAL CHASSIS : LP69F MODEL : 20HIZ20 20LS1RH-ZK CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Page 2: Table Of Contents
CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................13 BLOCK DIAGRAM...................17 EXPLODED VIEW .................. 20 REPLACEMENT PARTS LIST ............... 22 SVC. SHEET ....................- 2 -... -
Page 3: Product Safety
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 Replacement Parts List. 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. - Page 4 SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service prevent potential shock reasons prior to applying power to the manual and its supplements and addenda, read and follow the unit under test. SAFETY PRECAUTIONS on page 3 of this publication. 2.
- Page 5 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 component and adjacent components and the circuit board to prevent excessive component temperatures.
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Page 6: Specification
Size (W x D x H) 399.9(W) x 189.7(D) x 67.4(H) Tilt Degree -3(-0/+3) ~ +10(±2) dgree Tilt force Target 1.5Kgf (0.8Kgf ~ 2.0Kgf) Swivel Degree —NON Swivel Force —NON Appearance General Refer to Standard of LG(55)G1-1020 - 6 -... - Page 7 3. Outgoing Condition Item Condition Power Volume Level Main Picture Input Main Last Channel Pr 01 Mute STATION Auto Programme To set System Storage from Search Manual Programme To set Storage System Band Channel Fine Search Name Programme Edit To set Favourite Programme PICTURE Dynamic...
- Page 8 4. Optical Characteristic Item Specification Remark Viewing Angle 89/89 <CR≥10> 89/89 Luminance Luminance (cd/m PSM : Dynamic, CSM: Cool White luminance uniformity Contrast Ratio All white/ All black CIE Color Coordinates White 0.298 0.313 0.328 In AV input (Warm) 0.314 0.329 0.344 PSM : Dynamic...
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Page 9: Adjustment Instruction
ADJUSTMENT INSTRUCTION 1. Application Range 3.2. Function Check : Check Input and Signal items (cf. work instruction) These documents is applied to 20" LCD TV(chassis : LP69F) (1) TV (2) AV1 (SCART) 2. Designation (3) AV2 (CVBS/ S-Video) (4) “Speaker-out” Sound Out 1) The adjustment is according to the order which is designated and which must be followed, according to the * Display and Sound check is executed by Remote control. - Page 10 4.6. Outgoing condition Configuration 5. Adjustment Command (1) After all function test, press IN-STOP Key by Service 5.1. Adjustment Command (LENGTH=84) Remote control. And make outgoing condition. (2) When pressing IN-STOP key by service remote control, green Adjustment Contents CMD(hex) Description and red LED are blinked alternatively.
- Page 11 5.2. EEPROM DATA READ (1) Signal Table ST OP ST ART A DH A DL Delay 100ms ST OP ST ART 128 Bytes (2) Command Set Adjustment Contents CMD(hex) ADR(hex) ADL(hex) Details EEPROM READ 0-Page 0~7F Read 0-Page 80~FF Read 1-Page 0~7F Read 1-Page 80~FF Read 2-Page 0~7F Read...
- Page 12 6. Preset CH information SOUND PIF[MHz] SYSTEM VIDEO NAME System Mode LGE Gumi PR 0 45.25 PAL-BG PHILIPS MONO C 01 PR 1 575.25 SECAM-DK DIGITAL DUAL C 34 PR 2 175.25 PAL-BG PHILIPS STEREO FLOF C 05 PR 3 231.25 PAL-I FUBK...
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Page 13: Troubleshooting
TROUBLESHOOTING No power :[A]Process (LED indicator off) Check short of main B/D Check 15V or 5V or Change Lips. Fail of Lips. Pass Check Input/Output Change Q903. of Q903. Fail Pass Check LED Assy. Change LED Assy. Fail Pass Check S/W update, connector P281 - 13 -... - Page 14 :[B]Process No Raster Check LED Status Repeat [A] PROCESS. Fail on TV. Pass Check Inverter on Check Inverter connector. Fail Pass Pass Change Lips. Check IC900, IC901, IC906, Change Defect IC. IC907, IC909, IC910 Fail output voltage. Pass Check panel link cable. Check input signal cabel.
- Page 15 No Raster on AV Signal (CVBS/S-VHS/SCART/TUNER) Repeat [A] Process . Repeat [A] Process. Fail Pass Check L822, R124, R831 If CVBS of RCA(AV2). of video signal. Check L822, R124, R831 If YC of video signal. Pass Check R280, R281, R282, R110, If RGB of SCART R112, R114 of video singal Check L205, R210, R121 of...
- Page 16 No Sound Check the Change source input. input source. Fail Pass Re-solder or Change the Check the input/output defect part. of IC100 Fail Check X301. Pass Re-solder or change the Check the input/output defect part. of IC400 Fail Pass Check the speaker Change the speaker Fail Pass...
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Page 17: Block Diagram
BLOCK DIAGRAM - 17 -... - Page 18 BLOCK DIAGRAM DESCRIPTION Power Supply Block (LIPS) This Block Generates DC Voltage (5V,15V) to Main Control system from AC Power (100-240 V, 50/60 Hz, 1.0A) Also it has the inverter function that converts input voltage to AC Rms value for the LCD lamp. Voltage Regulator Voltage regulator convert the input 5V,15V to proper 1.8V, 3.3V, 5V, 12V for Main control system.
- Page 19 MEMO - 19 -...
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Page 20: Exploded View
EXPLODED VIEW - 20 -... - Page 21 EXPLODED VIEW PARTS LIST * Note: Safety mark PART NO. DESCRIPTION EAB30826701 Speaker,Full Range EN1527C-6603-1. ND 7W 8OHM 80DB 170HZ 71.5 X 42 X 29.5 LUG MCQ30553401 Damper MOLD SANTOPRENE SUPPORT RUBBER LS1R SPEAKER RUBBER EAJ30338001 LCD,Module-TFT LC201V02-SDA1 VGA 20.1INCH 640X480 450CD COLOR 72% 4/3 800 P7 ACQ32388601 Cover Assembly 20LS1R CL-81 20”...
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Page 22: Replacement Parts List
REPLACEMENT PARTS LIST DATE: 2007. 01. 15. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION DIODEs IC100 EAN33715803 LGE9689AD-LF 300MVTO3.6V,300MVTO2.7 D100 0DSGD00038A 1N4148W 1.25V 100V 150MA 2A 4NSEC 4 IC101 0IKE704200J KIA7042AF -0.3TO15V 4.2V 500MW SOT8 D400 0DS181009AA KDS181 1.2V 85V 300MA 2A 4NSEC 150M... - Page 23 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C116 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C174 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C117 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C175 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C118 0CK104CK56A...
- Page 24 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C400 0CK225DK94A CL21F225ZBFNNNE 2.2uF -20TO+80% 50V C863 0CK474DF51A C2012Y5P1C474KT 470nF 10% 16V Y5P - C4000 0CN1040K949 CH UP050 F104Z-B-B Z 100nF -20TO+80 C865 0CE106WFKDC MVK4.0TP16VC10M 10uF 20% 16V 16MA - C4001 0CN1040K949 CH UP050 F104Z-B-B Z 100nF -20TO+80...
- Page 25 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION P102 6602T12002D 53261-0590 5P 1.25MM 1R ANGLE SMD T R109 0RH4701D622 MCR10EZHJ472 4.7KOHM 5% 1/8W 2012 R P253 6602T10002F FH12K1-50S-0.5SH 50P 0.50MM FFC/FPC R110 0RH4702D622 MCR10EZHJ473 47KOHM 5% 1/8W 2012 R/ P280 6602V12001C 53261-0490 4P 1.25MM 1R ANGLE SMD T...
- Page 26 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R169 0RJ3301D677 MCR03EZPJ332 3.3KOHM 5% 1/10W 1608 R3204 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10W 1608 R174 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R R4000 0RN6801F409 RN-96T1F6K80 6.8KOHM 1% 1/6W 3.2X1. R175 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1608 R/T...
- Page 27 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R931 0RS0202K607 RSD02T3J20R0 20OHM 5% 2W 12.0X4.0MM L501 6210TCE001G HH-1M3216-501JT 500OHM 3.2X1.6X1.3M RA300 0RJ1000C687 RCA86TRJ100R 100OHM 5% 1/16W 4 SMD L820 6210TCE001A HB-1S2012-080JT 8OHM 2X1.25X1MM SMD RA301 0RJ1000C687 RCA86TRJ100R 100OHM 5% 1/16W 4 SMD...
- Page 30 Jan., 2007 P/NO : MFL35928001 Printed in Korea...