LG RM-26LZ50 Page 1 Service Manual Download

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LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : ML-041A

MODEL:RM-26LZ50, RM-26LZ50C

website:http://biz.LGservice.com

e-mail:http://www.LGEservice.com/techsup.html

http://www.wjel.net

Summary of Contents for RM-26LZ50

Page 1: ...AUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS ML 041A MODEL RM 26LZ50 RM 26LZ50C website http biz LGservice com e mail http www LGEservice com techsup html h t t p w w w w j e l n e t ...

Page 2: ... SAFETY 3 SPECIFICATION 6 TIMING CHART 10 ADJUSTMENT INSTRUCTION 11 TROUBLE SHOOTING 16 BLOCK DIAGRAM 21 WIRING DIAGRAM 23 EXPLODED VIEW 24 EXPLODED VIEW PARTS LIST 25 REPLACEMENT PARTS LIST 26 SVC SHEET h t t p w w w w j e l n e t ...

Page 3: ...ennas terminals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each...

Page 4: ...d wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly 3 Use only a grounded tip solderi...

Page 5: ...at them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent ...

Page 6: ...1 2 3 4 5 6 7 8 9 Video input applicable system Receivable broadcasting system RF input channel Input voltage Picture size Tuning system Operting environment Storage environment Display 1 PAL D K B G I 2 NTSC M 3 SECAM NTSC 4 43 1 PAL SECAM BG 2 PAL SECAM DK 3 PAL I I 4 SECAM L L 5 NTSC M 6 PAL N M 7 NTSC M VHF E2 E12 UHF E21 E69 CATV S1 S20 HYPER S21 S41 L L B C D VHF 2 13 UHF 14 69 CATV 1 125 VH...

Page 7: ... GND 6 Pr GND 8 LINE1 10 Line2 Ready 12 SWITCH GND 14 SWITCH 1280 horiz By 768 vert pixels RGB strip arrangement Hard coating 3H Anti glare treatment of the front polarizer Item Specification Remark Unit No DVI I input Middle east NTSC Only Japan only LED Red Red dimmed Red dimmed H x V x D H V Sync ON ON OFF ON ON OFF Video Active OFF OFF LPL AUO LPL AUO Power consumption Max 170 3 0 typ 25 W W W...

Page 8: ... page NEC code 1 1 2 Half SCART 1 Full SCART 1 1 1 1 1 BG DK BG I LL BG DK BG I LL X X O X O O X X X Item Specification Remark No Top option PAL NTSC Rear RT RM Side Side Rear RT RM 480i 576i Rear RZ Rear RZ DVI D Sub 9 pin RM RM Stereo 6 Optical Feature LCD Module Item Remark Specification Viewing Angle CR 10 Luminance Contrast Ratio CIE Color Coordinates Typical MAX MIN ALL white All back LPL R ...

Page 9: ...5 156 37 879 48 077 46 875 48 363 56 476 60 023 47 693 V freq Hz 59 94 67 75 00 56 25 60 31 72 18 75 00 60 00 70 06 75 02 60 00 Proposed VESA VGA VESA VGA VESA VGA VESA SVGA VESA SVGA VESA SVGA VESA SVGA VESA XGA VESA XGA VESA XGA VESA WXGA Pixel clock MHz 25 17 30 24 31 50 36 00 40 00 50 00 49 50 65 00 75 00 78 75 80 125 8 PC Input Mode DVI PC Analog RGB h t t p w w w w j e l n e t ...

Page 10: ...6 600 37 6 23 H 46 875 1056 800 16 80 160 V 75 0 625 600 1 3 21 H 48 363 1344 1024 24 136 160 V 60 004 806 768 3 6 29 H 56 476 1328 1024 24 136 144 V 70 069 806 768 3 6 29 H 60 023 1312 1024 16 96 176 V 75 029 800 768 1 3 28 H 47 776 1664 1280 64 128 192 V 59 870 798 768 3 7 20 Mode H V Sort 1 2 3 4 5 6 7 8 9 10 11 25 175 30 240 31 5 36 40 0 50 0 49 5 65 0 75 78 75 79 50 640x480 640x480 800x600 64...

Page 11: ...gital Contents Protection Set 2 3 1 HDCP DVI Digital Visual Interface is the link which transmits HD video of HD and STB when in sleep mode This function prevents the hazard of hang display thus securing the security against the contents and copy protection 2 3 2 To store in EEPROM AT24C16 in HDCP function connect DVI cable Detailed work content from work map reference Note HDCP will temporarily e...

Page 12: ...Program Program Edit Favorite Program PSM SSM AVL Balance Input Child Lock Auto sleep Language H Position V Position Clock Phase Auto Configure Dynamic Contrast Brightness Colour Sharpness Tint Off 30 TV Pr 01 Off 16 9 None Dynamic 80 40 70 70 0 Flat Off 0 TV Off Off English Area Management Variable by each mode NTSC OPTION 3 Shipping Conditions h t t p w w w w j e l n e t ...

Page 13: ... Top On 0 Ch Sound Non Memory 1 Ch Sound Memory 0 except below area Off 1 Middle east Area Vol On 0 except below area Off 1 China Australia On Option 1 Option 2 NO ITEM CONDITION REMARK 1 2 3 4 Language Txt Lang Inch opt DDCi 1 0 0 Analog 0 Eng Only 1 EU5 2 12 nations Europe 3 Eng Chines 4 Eng Arab Urdu 5 Eng FARSI 0 WEST EU 1 EAST EU 1 2 TURKY EU 3 EAST EU 2 4 CYRILLIC 1 5 CYRILLIC 2 6 CYRILLIC 3...

Page 14: ... 2 EDID Read Write 1 Run WinEDID exe 2 Edit Week of Manufacture Year of Manufacture Serial Number a Input User Info Data b Click Update button c Click Write button 220 IBM Compatible PC Video Signal Generator PARALLEL PORT Power inlet required Power LED ST Switch Power Select Switch 110V 220V Control Line N o t u s e d R S 2 3 2 C P A R A L L E L V S Y N C P O W E R S T VGS MONIT OR E E V Sync On ...

Page 15: ... To move channel up down or to select a function displayed on the screen To adjust the volume or accurately control a specific function To set a specific function or complete setting To move the channel down in the PIP screen To use as a red key in the teletext mode To move the channel in the PIP screen To use as a green key in the teletext mode To switch between the main and sub screens To use as...

Page 16: ... Change IC1300 IC4 or IC8 Change LED Assy Change L808 L809 F801 F802 Check 24V or 12V of Power B D Check Output of IC1300 IC4 or IC8 Check LED Assy Check P101 Connector Fail Fail Fail Change L3 L1300 Check Output of L3 L1300 Fail Pass Fail Pass Pass Pass A Process h t t p w w w w j e l n e t ...

Page 17: ... Connector or inverter Check input source cable and jack Repeat A PROCESS Fail Change L900 L901 L902 L903 Fail Change IC901 Fail Change inverter connector or inverter Fail Change panel link cable or module Fail Change module Fail Check panel link Cable or module Pass Pass Pass Pass B Process h t t p w w w w j e l n e t ...

Page 18: ...k the input output of IC1 Check the input output of IC901 Check input source cable and jack Fail Re soldering or Change the defect part Fail Re soldering or Change the defect part Fail Pass Pass Pass Check the input output of IC500 IC600 Re soldering or Change the defect part Fail Pass h t t p w w w w j e l n e t ...

Page 19: ...k the input output of IC1 Check the input output of IC500 IC600 Check input source cable and jack Fail Fail Fail Fail Re soldering or Change the defect part Fail Re soldering or Change the defect part Check 5V 33V of TU1000 Re soldering or Change the defect part Pass Pass Pass Check the input output of IC901 Fail Re soldering or Change the defect part Pass Pass h t t p w w w w j e l n e t ...

Page 20: ...the input source Fail Pass Re soldering or Change the defect part Check the input output of IC1 Fail Pass Re soldering or Change the defect part Check the input output of IC100 IC101 Fail Pass Change speaker Check the speaker Fail Pass h t t p w w w w j e l n e t ...

Page 21: ...LI2300 RAM SM5301 GM5221 SCALER ROM LVDS or TTL OUT DVI R G B 3 3 R G B 8 8 8 PC_R G B 3 PC_R G B DVI 8 3 R G B HD_Y Pb Pr NT HD_Y Pb Pr 3 R L SIDE_COMP SIDE_Y C HD_COMP _ L R CVBS_L R PC_ LR LA7222C SIDE_ LR 3 R G B R G B CVBS_IN NTSC _ IF h t t p w w w w j e l n e t ...

Page 22: ...e VCTI is the main microcomputer that processes both video signals and sound signals It also processes the RF signal received from the tuner The scaler enables to adjust timing on the LCD panel as well as an adjustment of the size and position of the input signal The graphic controller unit receives the PC analog RGB input and the DVI D digital signal and sends the PC input to the scaler analog po...

Page 23: ...202 P1601 P1602 1 2 3 4 5 6 7 8 9 10 WIRING DIAGRAM No Part No 1 2 3 4 5 6 7 8 9 10 Wiring Part List 6631T11020A LPL 6631T11020B AUO 6631T20033F 6631T20032A 6631T25019K 6631T20033B 6631T20033C 6631T20033D 6631T20029Z 6631T20029Y 6631T20033E h t t p w w w w j e l n e t ...

Page 24: ... 24 EXPLODED VIEW 1 5 7 8 9 10 11 12 14 15 16 17 13 6 2 3 4 h t t p w w w w j e l n e t ...

Page 25: ...ST590A PWB PCB ASSEMBLY SUB 26 27LZ50 PWR LED LED P SW TOTAL BRAND PWR LED BOARD 7 6871TST589A PWB PCB ASSEMBLY SUB 26LZ50 KEY SUB TOTAL BRAND KEY BOARD 8 4951TKS156G METAL ASSEMBLY FRAME LPL RZ 26LZ50 4951TKS156C METAL ASSEMBLY FRAME AUO RZ 26LZ50 9 6871TPT275A PWB PCB ASSEMBLY POWER RZ 30LZ50 POWER TOTAL BRAND ML 041A 23 26 27 30 32 AUTOBAN 10 6871TST588B PWB PCB ASSEMBLY SUB 26 27LZ50 IR SUB TO...

Page 26: ... Y5P 2012 C1002 0CH3103K516 10000PF 50V 10 B Y5P 2012 C1003 0CH3103K516 10000PF 50V 10 B Y5P 2012 C1004 0CH3103K516 10000PF 50V 10 B Y5P 2012 C1007 0CH3103K516 10000PF 50V 10 B Y5P 2012 C1010 0CK273DK51A 27000PF 2012 50V 10 B Y5P C107 0CK225DFK4A 2 2UF 2012 16V 20 20 F Y5 C109 0CH3103K516 10000PF 50V 10 B Y5P 2012 C11 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C110 0CH3103K516 10000PF 50V 10 B Y5P 201...

Page 27: ...12 R TP C640 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C65 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 06 18 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C66 0CK106EF56A 10UF 3216 16V 10 X7R R TP C67 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C700 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C704 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C705 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C75 0CH3104K566 0 1UF 50V ...

Page 28: ...1UF 1608 50V 10 R TP X7R C753 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C759 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R DATE 2004 06 18 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C78 0CK106EF56A 10UF 3216 16V 10 X7R R TP C8 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C800 0CK105CF94A 1UF 1608 16V 80 20 R TP F C801 0CK105CF94A 1UF 1608 16V 80 20 R TP F C802 0CK105CF94A 1UF 1608 16V 80 20 R TP F C803 0CK105C...

Page 29: ...6 18 S AL LOC NO PART NO DESCRIPTION SPECIFICATION D102 0DS181009AA KDS181 TP KEC SOT 23 80V 3 D103 0DS181009AA KDS181 TP KEC SOT 23 80V 3 D104 0DZ620009HB UDZ S 6 2B TP ROHM SOD323 20 D105 0DZ620009HB UDZ S 6 2B TP ROHM SOD323 20 D703 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 D704 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD201 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD202 0DZ510009EE UDZ S 5 1B TP R...

Page 30: ... L10 0LC1032101A 10UH 10 3216 R TC FI C3216 L12 0LC1032101A 10UH 10 3216 R TC FI C3216 L16 0LC1032101A 10UH 10 3216 R TC FI C3216 L306 0LC1532101A 15UH 10 3216 R TC FI C3216 L307 0LC1532101A 15UH 10 3216 R TC FI C3216 L308 0LC1532101A 15UH 10 3216 R TC FI C3216 DATE 2004 06 18 S AL LOC NO PART NO DESCRIPTION SPECIFICATION L309 0LC1532101A 15UH 10 3216 R TC FI C3216 L310 0LC1532101A 15UH 10 3216 R ...

Page 31: ...622 100 1 10W 5 D R TP R850 0RH4701D622 4 7K 1 10W 5 D R TP R851 0RH4701D622 4 7K 1 10W 5 D R TP R87 0RH1000D622 100 1 10W 5 D R TP R89 0RH1000D622 100 1 10W 5 D R TP R930 0RH3301D622 3 3K 1 10W 5 D R TP R931 0RH3301D622 3 3K 1 10W 5 D R TP R941 0RH1000D622 100 1 10W 5 D R TP R960 0RH1000D622 100 1 10W 5 D R TP R969 0RH1202D622 12K 1 10W 5 D R TP R971 0RH1502D622 15K 1 10W 5 D R TP R974 0RH4701D62...

Page 32: ...8 0RJ1002D677 10K OHM 1 10 W 5 1608 R TP R139 0RJ1002D677 10K OHM 1 10 W 5 1608 R TP DATE 2004 06 18 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R15 0RJ4700D677 470 OHM 1 10 W 5 1608 R TP R152 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R153 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R155 0RJ2700D677 270 OHM 1 10 W 5 1608 R TP R157 0RJ2700D677 270 OHM 1 10 W 5 1608 R TP R159 0RJ2700D677 270 OHM 1 10 W 5 1608...

Page 33: ...677 0 OHM 1 10 W 5 1608 R TP R758 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP DATE 2004 06 18 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R759 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R79 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R800 0RJ0752D677 75 OHM 1 10 W 5 1608 R TP R801 0RJ0752D677 75 OHM 1 10 W 5 1608 R TP R807 0RJ0102D677 10 OHM 1 10 W 5 1608 R TP R808 0RJ0102D677 10 OHM 1 10 W 5 1608 R TP R81 0RJ100...

Page 34: ... TA52 R1704 0RN3300F409 330 1 6W 1 TA52 R1705 0RN2700F409 270 1 6W 1 TA52 R1706 0RN2701F409 2 7K OHM 1 6 W 1 00 TA52 SW1700 140 313A TACT 2LEAD 100G TA LG C D N SW1701 140 313A TACT 2LEAD 100G TA LG C D N SW1702 140 313A TACT 2LEAD 100G TA LG C D N SW1703 140 313A TACT 2LEAD 100G TA LG C D N SW1704 140 313A TACT 2LEAD 100G TA LG C D N SW1705 140 313A TACT 2LEAD 100G TA LG C D N SW1706 140 313A TAC...

Page 35: ...Date 2004 05 07 P No 3854TP3001A h t t p w w w w j e l n e t ...

Page 36: ...Date 2004 05 07 P No 3854TP3001A h t t p w w w w j e l n e t ...

Page 37: ...Jun 2004 Printed in Korea P NO 3828TSL103S h t t p w w w w j e l n e t ...

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