Zenith L20V26 Seroes Service Manual Download Page 1 | Manualshive

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SERVICE MANUAL

Product Type:

LCD TV

Chassis:

MF-002A

Manual Series: CM154
Manual Part #: 923-03488
Model Line:

E

Product Year:

2002

Safety .......................................................... 2
Overview ...................................................... 5
Servicing ................................................... 12
Parts ......................................................... 13
Diagrams .................................................... 19
Schematic .................................................. 25

Printed in U.S.A.

Model Series:

CONTENTS

L20V26

Published June 2002

by Technical Publications

Zenith Electronics Corporation

201 James Record Road

Huntsville, Alabama 35824-1513

Copyright



2002 by Zenith Electronics Corporation

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Summary of Contents for L20V26 Seroes

Page 1: ...Product Year 2002 Safety 2 Overview 5 Servicing 12 Parts 13 Diagrams 19 Schematic 25 Printed in U S A Model Series CONTENTS L20V26 Published June 2002 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsville Alabama 35824 1513 Copyright 2002 by Zenith Electronics Corporation ...

Page 2: ...nents commonly are called Electro statically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semicon ductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly...

Page 3: ...RONT 7 BACK 7 USER MENUS 8 MENU LANGUAGE 8 CLOSED CAPTIONING 8 PARENTAL CONTROL 9 CHANNEL SEARCH 9 SLEEP TIMER 10 AUDIO SETUP 10 VIDEO 11 SERVICING 12 ADJUSTMENTS 12 PARTS 13 MODEL PARTS 13 COMPONENT PARTS 13 DIAGRAMS 19 EXPLODED VIEW 19 BLOCK DIAGRAM 20 MAIN PCB LAYOUT 21 MX PCB LAYOUT 22 TUNER PCB LAYOUT 23 CONTROL PANEL PCB LAYOUT 23 MAIN L20V26 CIRCUIT 25 ...

Page 4: ... 4 ...

Page 5: ...ity images than the conventional interlacing method DIGITAL PROGRESSIVE SCAN Lines of video data are processed faster and sequentially a significant improvement on the old interlacing method This allows the TV to display crisp clear images when receiving data from a DVD player or other video sources requiring more bandwidth NTSC TUNER Accepts standard United States broadcast video signals as desig...

Page 6: ...ear 1 Year MTBF Approx 40K Hours DIMENSIONS Width x Height x Depth Monitor 27 4 x 19 x 7 7 Weight 30 2 lbs DIMENSIONS WITH PACKAGING Width x Height x Depth 22 8 x 24 8 x 11 9 Weight 36 4 lbs UPC Code 4464200402 6 REMOTE CONTROL power flashbk menu mute sleep ch enter vol vol ch cc tv video 0 2 3 5 6 4 8 9 7 1 mts TV VIDEO BUTTON CAPTION BUTTON MUTE BUTTON ENTER BUTTON VOLUME BUTTONS SLEEP BUTTON PO...

Page 7: ...nates brightly when the TV is in standby mode Dims when the TV is switched on DC 15V DC 12V 0 2A S ANT IN 75Ω L L Y PB PR DVD DTV 480i 480p DC IN 15V DC 12V 0 2A ANT IN 75Ω L L Y PB PR DVD DTV IN COMPONENT 480i 480p L R AUDIO OUT S VIDEO IN MONITER OUT H P R L VIDEO VIDEO AUDIO R L AUDIO MONO Power Input Antenna Input DVD DTV Input Headphone Jack Audio Video Input S Video Input Monitor Output Powe...

Page 8: ...s while Another mode might show demonstration or programming information CAPTIONS TEXT SETUP Captions Off Caption Text CC 1 Parental Ctl Language English Use And Use the menu button to select the menu shown Use the channel up down buttons to select the Caption Text option Each time you press the volume up down buttons the caption mode is cycled to the next option CC 1 CC 3 CC 2 CC 4 Text 3 Text 4 ...

Page 9: ...o set the number of hours for the blocking Up to 99 Use the channel up down buttons to select the Set Password option Enter a four digit password Enter it again when requested A new password may be chosen each time blocking is set up Press the channel up down buttons to select the Lock on off option Press the volume up down buttons to turn the lock On Press the menu button to save the blocking set...

Page 10: ...l Program TV 7 Memory TV 7 Memory Use And Press the enter button to select and exit The current channel is added to Memory or Erased from the channel list SLEEP TIMER Sleep timer turns the TV off at a preset time Use the sleep button to set sleep timer Each press of sleep changes the setting as shown below 10 20 30 60 240 180 120 90 Sleep Use And To cancel sleep time setting press the sleep button...

Page 11: ...t 0 Sharpness 70 APC Clear DRP Clear Use And APC AUTO PICTURE CONTROL APC adjusts the TV for the best picture appearance Use the channel up down buttons to select the APC option Each press of volume up down button selects a different picture appearance Options are Clear Optimum User and Soft Press the enter button to select and exit Clear Optimum User Soft Contrast 100 Brightness 60 Color 60 Tint ...

Page 12: ...Key or SVC Key of Remote Control for Adjustment 3 Press the VOL Key repeatly to appear OK AUTO RGB ADJUSTMENT 1 Adjust RGB after performing DVCO Adjustment 2 Receive a Digital Pattern 3 Select AUTO RGB ADJ by pressing ADJ Key or SVC Key of Remote Control for Adjustment 4 Press the VOL Key repeatly to appear OK RGB LEVEL ADJUSTMENT Equipment 1 Pattern Generator 408NPS READER with 10 STEP if availab...

Page 13: ...ERAMIC HDE 220000PF 2012 16V 10 C241 0CK224DF56A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C242 0CE226DF618 CAP FIXED ELECTRO 22UF STD 16V 20 C244 0CE107DF618 CAP FIXED ELECTRO 100UF STD 16V 20 C248 0CK224DF56A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C249 0CK224DF56A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C25 0CE106DF618 CAP FIXED ELECTRO 10UF STD 16V 20 C250 0CK224DF56A CAP FIXED CERAMIC ...

Page 14: ...A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C933 0CK224DF56A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C935 0CE106DF618 CAP FIXED ELECTRO 10UF STD 16V 20 C936 0CK224DF56A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C937 0CK224DF56A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C938 0CK224DF56A CAP FIXED CERAMIC HDE 220000PF 2012 16V 10 C94 0CE476DF618 CAP FIXED ELECTRO 47UF STD 16V 20 C940 0CK224DF5...

Page 15: ...TEC 3216MM L211 6210TCE001A FILTER CIRC EMC HB 1S2012 080JT CERATEC L212 6210TCE001A FILTER CIRC EMC HB 1S2012 080JT CERATEC L214 0LA0331K119 INDUCTOR AXIAL LEAD 3 3UH 10 A 2 3 X 3 4 L215 0LA0331K119 INDUCTOR AXIAL LEAD 3 3UH 10 A 2 3 X 3 4 L216 0LA0331K119 INDUCTOR AXIAL LEAD 3 3UH 10 A 2 3 X 3 4 L217 0LA0331K119 INDUCTOR AXIAL LEAD 3 3UH 10 A 2 3 X 3 4 L218 0LA0331K119 INDUCTOR AXIAL LEAD 3 3UH ...

Page 16: ... TRANSISTOR BIPOLARS CHIP 2SC3875S ALY Q208 0TR387500AA TRANSISTOR BIPOLARS CHIP 2SC3875S ALY Q209 0TR387500AA TRANSISTOR BIPOLARS CHIP 2SC3875S ALY Q210 0TR387500AA TRANSISTOR BIPOLARS CHIP 2SC3875S ALY Q211 0TR387500AA TRANSISTOR BIPOLARS CHIP 2SC3875S ALY Q212 0TR387500AA TRANSISTOR BIPOLARS CHIP 2SC3875S ALY Q213 0TR387500AA TRANSISTOR BIPOLARS CHIP 2SC3875S ALY Q214 0TR150400BA TRANSISTOR BIP...

Page 17: ...WITCH PUSH SDKLA1 ALPS UL CSA 250V 5A SW1102 140 313A SWITCH TACT TACT 2LEAD 100G TA SW1103 140 313A SWITCH TACT TACT 2LEAD 100G TA SW1104 140 313A SWITCH TACT TACT 2LEAD 100G TA SW1105 140 313A SWITCH TACT TACT 2LEAD 100G TA SW1106 140 313A SWITCH TACT TACT 2LEAD 100G TA SW1107 140 313A SWITCH TACT TACT 2LEAD 100G TA SY302 6200VKR001B FILTER CIRC BAND PASS LPF 2EA SMD TH355LSK K5214 SY525 6210VC0...

Page 18: ... 18 ...

Page 19: ...VSMA75F POWER PCB ASSY 4 5020V00553E BUTTON SET 39 5 5020V00552H BUTTON SET 6 6871VSMA74A CTL PCB ASSY 7 6304VT2011A LCD LC201V1 A1 20 1 8 6633VA0003D INVERTER ASSY 15VOLT KUBNKM022A 9 6871VSM814B MX PCB ASSY 10 6871VMM644L MAIN PCB ASSY 11 6871VSM812B TUNER PCB ASSY 12 3809V00A10J BACK COVER ASSY 13 3550V00202A A V COVER ABS 14 4950V00081B METAL HINGEFIXER SUS304 15 4811V00019E BRACKET ASSY L20V2...

Page 20: ...der A D Converter VPC 3230D COMB FIL 4H INPUT 4 CVBS 1 S VHS 2 RGB YCrCb 1 F B 1 CVBS OUTPUT Y Cr Cb OUTPUT IC1 MICOM TXT 6 0MHz Caption Processor POWER DC to DC Converter SI786 SI4808DY T801 30 V 5V SCL SDA CVBS SIF IF AGC 5V 3 3V 33V X2 Y U V 480P Y U V 480P 0 5 0 7 Y U V 4 2 2 4 2 2 Y U V Analog R G B H V Dual Audio AMP LA4282 SCL SDA L SPK R SPK R G B OSD H V 2H VIDEO H V CLK 5V 3 3V 3 3 V 9V ...

Page 21: ...CM154 923 03488 21 L20V26 PCBS PCB LAYOUTS MAIN PCB LAYOUT ...

Page 22: ...CM154 923 03488 22 L20V26 PCBS PCB LAYOUTS MX PCB LAYOUT ...

Page 23: ...CM154 923 03488 23 L20V26 PCBS PCB LAYOUTS TUNER PCB LAYOUT CONTROL PANEL PCB LAYOUT TUNER TOP TUNER BOTTOM CONTROL POWER ...

Page 24: ... 24 ...

Page 25: ......

Page 26: ......

Page 27: ...9 10 L20V26 SHEET 25 CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL REPLACE ONLY WITH PART NUMBERS SPECIFIED NOTE WAVEFORMS AND VOLTAGES WERE MEASURED AT 120VAC CHANNEL 5 AND NSTC COLOR BARS CM154 923 03488 Main L20V26 Circuit ...

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