LG 15LS1RA Service Manual Download Page 14 | Manualshive

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TROUBLESHOOTING

No power
(LED indicator off)

Check short of main B/D
or Change LIPS.

Change IC903.

Change LED Assy.

Check 15V or 5V

of LIPS.

Check Output of

IC903.

Check LED Assy.

Check P901, P270, Connector.

Fail

Fail

Change Q904.

Check Output of

Q904.

Fail

Pass

Fail

Pass

Pass

Pass

:[A]Process

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Summary of Contents for 15LS1RA

Page 1: ...R LCD TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LN71A MODEL 15LS1RA 15LS1RA MK website http biz LGservice com ...

Page 2: ... 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 TROUBLE SHOOTING 14 BLOCK DIAGRAM 18 EXPLODED VIEW 20 REPLACEMENT PARTS LIST 22 SVC SHEET ...

Page 3: ...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 exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a ...

Page 4: ...y obtain and 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 ...

Page 5: ...not shiny reheat 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 boa...

Page 6: ...BIT WHITE FRC 16 2M colors P N Size mm 326 6 W x 253 5 H x 14 0 D EAJ36404601 Surface Treatment Anti Glare CLAA150XP07 Operating Mode Normally White TN Back light Unit CCFL 4 tables edge light top bottom R T Typ R T 5ms F T 6ms Typ No 1 Product Dimension Width W Length D Height H Before Packing 463 3 166 3 353 5 With Stand After Packing 527 0 175 0 470 0 2 Product Weight Only SET 3 94kg CPT With B...

Page 7: ...ss 2 H Position V Position 3 Tracking Clock Phase 4 Auto Configure 5 Reset 4 Optical Characteristic No Item Specification Remark Min Tpy Max 1 Viewing Angle CR 5 Horizontal Vertical 150 170 Deg 2 Luminance Luminance cd m2 250 350 APC Clear ACC Cool White Lumnance Uniformity 75 80 White 100 IRE 3 Contrast Ratio CR 2400 3000 All whit All black Set up Level 0 IRE 4 CIE Color Coordinates White Wx 0 29...

Page 8: ...0 Favourite Programme 7 PICTURE APC Clear Optimum Soft User Contrast 100 Brightness 50 Color 60 Sharpness 50 Tint 0 ACC Cool Normal Warm User Red 0 Green 0 Blue 0 Reset To set 8 SOUND DASP Flat Music Movie Sports User AVL Off Balance 0 9 TIME Clock AM Off timer AM Off On time AM Ch TV 2 Vol 30 Off Auto off Off 10 SPECIAL Language English 3 Languages Key lock Off Caption Text Mode 1 Mode 2 Text 1 T...

Page 9: ...r LPT2 Speed Choose the speed from 70 to 99 JIG Choose the your JIG type Normally Mstar or LGE and then click the Apply 3 Click Connect tab If flash memory is detected normally Flash memory type will be displayed Example MX25L4005 MX or Winb25X40 Winbond etc 4 Click Read tab and then load download file XXXX bin by clicking Read 5 Click Auto tab and set as below and then click Run 6 After downloadi...

Page 10: ...ected to the signal of Pattern Generator 4 2 Confirm color coordinate of RGB 15 only 1 Set Input to RGB 2 Input signal XGA 1024 x768 60Hz Full white 216 255 gray level 85 IRE Model 60 Pattern 78 at MSPG925L 3 Set CSM Cool 4 Confirm whether x 0 276 0 03 y 0 283 0 03 y 180 or not 4 3 Confirm color coordinate of Video 1 Set Input to Video 2 Input signal CVBS NTSC 60Hz Full White 216 255 gray level 85...

Page 11: ... of Area Option is 1 0 in production line After IN STOP Area Option will change 0 0 If Area Option isn t 00 after IN STOP must change to 00 Using G key on R C NTSC S Am For South America Korea For Korea Item Condition Remark 2HR OFF 1 0 2 Hour off option OFF 1 2 Hour off option ON FACTORY MODE 0 0 EEPROM Write Protection On 1 EEPROM Write Protection Off CHANNEL MUTE 1 0 Channel Mute Off 1 Channel ...

Page 12: ...for the use of EDID 2 Delay 500ms Time to wait and read vZideo RAM from MICOM 3 Be transmitted the contents of MICOM s 128 bytes Buffer to PC 128th Data is the CheckSum of 127 bytes data That s OK if the value of adding 128 bytes Data is Zero ADL hex 0 80 0 80 0 80 0 80 Details 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 2 Page 80 FF Read 3 Page 0 7F Read...

Page 13: ...9 800 640 16 96 48 640 x 480 O V Lines 59 94 525 480 10 2 33 2 H Pixels 40 0 37 879 1056 800 40 128 88 800 x 600 O V Lines 60 317 628 600 1 4 23 3 H Pixels 35 999 35 156 1024 800 40 128 72 800 x 600 O V Lines 56 250 800 600 1 4 24 4 H Pixels 65 0 48 363 1344 1024 24 136 160 1024 x 768 O V Lines 60 004 806 768 3 6 29 13 6 Signal Timing Resolution 15 only ...

Page 14: ...r off Check short of main B D or Change LIPS Change IC903 Change LED Assy Check 15V or 5V of LIPS Check Output of IC903 Check LED Assy Check P901 P270 Connector Fail Fail Change Q904 Check Output of Q904 Fail Pass Fail Pass Pass Pass A Process ...

Page 15: ...C910 Check inverter connector or inverter Check inputting source cable and jack Repeat A PROCESS Fail Change IC900 IC901 IC906 IC908 IC909 IC910 Fail Change IC100 Fail Change inverter connector or inverter Fail Change panel link cable or module Fail Check panel link cable or module Pass Pass Pass Pass Pass B Process ...

Page 16: ...0 L801 Check the signal of R103 R104 R106 R108 R132 L822 L800 L801 Repeat A Process Check the output of TU500 Check the input output of IC100 Check inputting source cable and jack Fail Fail Fail Fail Re solder or change the defect part Check X100 Check 5V of TU500 Re solder or change the defect part Pass Pass Pass ...

Page 17: ...input Check the input source Fail Pass Re solder or Change the defect part Check X100 Check the input output of IC100 Fail Pass Re solder or change the defect part Check the input output of IC400 Fail Pass Change the speaker Check the speaker Fail Pass ...

Page 18: ...k S Video Jack Stereo In Option H P Output LED IR Control Power Video Audio Data Address Data CLK DQM W EZ CASZ RASZ EEPROM 24C02 M12L16161A 5TG SDRAM CVBS Tuner CVBS Tuner SCL SDA SCL SDA SCL SDA SIF_OUT MST96585 Scaler Video Decoder Component D Sub RS 232C Option Rx Tx 3 3V 12V Regulator Regulator Regulator Regulator Regulator 5V 1 8V LED IR Board Control MX232A RS 232C ON OFF PWM_DIM DIM_CTL YD...

Page 19: ... 19 MEMO ...

Page 20: ... 20 EXPLODED VIEW 300 200 120 120 590 431 580 520 411 400 530 441 440 430 ...

Page 21: ...3 AAN30646903 Base Assembly STAND 15LS1R CL81 15LS1R COVER BASE ASSY SILVER SPRAY AAN31022501 Base Assembly STAND 15LS1R CL81 15LS1R STAND BODY ASSY MCK30214203 Cover MOLD HIPS 51SF HIPS 51SF 20 15 LS1R STAND BODY COVER SILVER SPRAY MCK30233401 Cover MOLD HIPS 51SF LS1R HIPS 51SF LS1R holder cable management EBU36682701 Main Total Assembly 15LS1RA MK BRAND LN71A EBR31760601 PCB Assembly SUB T T LP...

Page 22: ......

Page 23: ......

Page 24: ...Mar 2007 Printed in Korea P NO MFL37762601 ...

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