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Operating Manual
SERVICE MANUAL
Product Type:
Chassis:
Manual Series: CM154
Manual Part #: 923-03488
Model Line:
Product Year:
Printed in U.S.A.
LCD TV
MF-002A
E
2002
CONTENTS
Safety .......................................................... 2
Overview ...................................................... 5
Servicing ................................................... 12
Parts ......................................................... 13
Diagrams .................................................... 19
Schematic .................................................. 25
Published June 2002
by Technical Publications
Zenith Electronics Corporation
201 James Record Road
Huntsville, Alabama 35824-1513
Copyright
2002 by Zenith Electronics Corporation
Model Series:
L20V26
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Summary of Contents for Zenith L20V26 Seroes
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Page 1: Table Of Contents
Overview ............5 Servicing ........... 12 Parts ............13 Diagrams ............ 19 Schematic ..........25 Published June 2002 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsville, Alabama 35824-1513 Copyright 2002 by Zenith Electronics Corporation Printed in U.S.A. -
Page 2: Safety
No deviations are allowed without prior approval by age until immediately before you are ready to install it. (Most re- Zenith Electronics Corporation. Service work should be performed placement ES devices are packaged with leads electrically shorted only after you are thoroughly familiar with these safety checks and together by conductive foam, aluminum foil, or comparable con- servicing guidelines. -
Page 3: Table Of Contents
TABLE OF CONTENTS PRODUCT SAFETY ..........2 TABLE OF CONTENTS ..........3 OVERVIEW ............5 WARRANTY/SERVICE ........5 FEATURES ............. 5 SPECIFICATIONS ..........5 REMOTE CONTROL ........... 6 FRONT ............7 BACK ............7 USER MENUS ............. 8 MENU LANGUAGE ..........8 CLOSED CAPTIONING ........ - Page 4 - 4 -...
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Page 5: Overview
OVERVIEW GENERAL INFO NTSC TUNER Accepts standard United States broadcast video WARRANTY/SERVICE signals as designated by the National Television This model is a Factory Service Repair model (in and out Standards Committee. of warranty) and is covered by a one year limited HI-RES COMPONENT VIDEO warranty. -
Page 6: Remote Control
OVERVIEW CABINET DESCRIPTION Finish .......... Brushed Silver Cabinet Style ..........New REMOTE CONTROL Transmitter ........... Yes Model Number ........MF-002A Transmitter Finish ........ Off-White REQUIRED APPROVALS UL, C-UL, NOM ......UL, C-UL, FCC (B) SERVICE/LIMITED WARRANTY Warranty: Parts/Labor ...... 1 Year/1 Year MTBF (Approx.) ........ -
Page 7: Front
OVERVIEW FRONT Side Control panel Side Control panel Channel Buttons Volume Buttons Enter Button Menu Button TV/Video Button Remote Control Sensor Power/Standby indicator Illuminates brightly when the Power button TV is in standby mode. Dims when the TV is switched on. BACK (15V) ANT IN... -
Page 8: User Menus
USER MENUS USER MENUS Text 1 CC 1 Press the menu button to display the available menus. Use the channel up/down buttons to select a menu option. CC 2 Text 2 MENU LANGUAGE CC 3 Text 3 Language English Captions Caption/Text CC 1 CC 4... -
Page 9: Parental Control
USER MENUS PARENTAL CONTROL be blocked by TV Rating and/or Individual Categories. Movies that have been shown at the theaters or direct- to-video movies use the Movie Rating System(MPAA) Language English only. Captions Caption/Text CC 1 Movies Ratings: Parental Ctl Unblocked G - General audience PG - Parental guidance suggested... -
Page 10: Sleep Timer
USER MENUS Press the volume up button to begin the channel search. Wait for auto program to complete the channel search cycle before choosing a channel. The TV scans Sleep for over-the-air channels and then channels provided by a cable service. If you press the enter button during auto programming, the function will stop and only channels found up to that time will be added. -
Page 11: Video
USER MENUS Use the channel up/down button to select the MTS option. Each press of volume up/down buttons changes the audio mode as shown. Press the enter button to Contrast Brightness select and exit. Color Tint DASP Sharpness Clear Clear Use the menu button to select the Audio menu. -
Page 12: Servicing
SERVICING USING METHOD FOR CA-110 SERVICING Use it in case of needing adjustment brightness. ADJUSTMENTS APPLICATION OBJECT Notes (1) This set uses an adapter, so connect the adapter CA110 Screen and the set correctly before adjustment. Input signal of Video (2) The adjustment must be performed under the 30 [cm] correct sequence. -
Page 13: Parts
C250 0CK224DF56A CAP,FIXED CERAMIC(HDE), 220000PF 2012 16V 10% Fax: 1-888-6-ZENITH C251 0CK224DF56A CAP,FIXED CERAMIC(HDE), 220000PF 2012 Mail: Zenith National Parts 16V 10% C253 0CK224DF56A CAP,FIXED CERAMIC(HDE), 220000PF 2012 201 James Record Road 16V 10% Huntsville, AL 35824-1513 C254 0CE105DK618 CAP,FIXED ELECTRO, 1UF STD 50V 20%... - Page 14 PARTS C935 0CE106DF618 CAP,FIXED ELECTRO, 10UF STD 16V 20% C607 0CE106SH6DC CAP,AL.ELECTRO, 10UF MVG 25V M SMD R C936 0CK224DF56A CAP,FIXED CERAMIC(HDE), 220000PF 2012 C627 0CE107SF6DC CAP,FIXED ELECTRO, 100UF MVG 16V 20% 16V 10% C937 0CK224DF56A CAP,FIXED CERAMIC(HDE), 220000PF 2012 C631 0CE107SF6DC CAP,FIXED ELECTRO, 100UF MVG 16V 20%...
- Page 15 PARTS IC501 0ITI808300B IC,TEXAS INSTRUMENT, THS8083 100QFP X 3.4 ADC IC PD-40X3 L216 0LA0331K119 INDUCTOR,AXIAL LEAD, 3.3UH 10% A 2.3 IC502 0IMR882840B IC,MACRONIX, MX88L284-V 208QFP SCALE X 3.4 MF004A L217 0LA0331K119 INDUCTOR,AXIAL LEAD, 3.3UH 10% A 2.3 IC505 0ISS416162B IC,SAMSUNG,K4S161622D-TC80 50 TSOP X 3.4 SDRAM L218...
- Page 16 PARTS 6210TCE001G FILTER(CIRC),EMC, HH-1M3216-501 Q211 0TR387500AA TRANSISTOR,BIPOLARS, CHIP CERATEC 3216MM 2SC3875S(ALY) L910 6210TCE001G FILTER(CIRC),EMC, HH-1M3216-501 Q212 0TR387500AA TRANSISTOR,BIPOLARS, CHIP CERATEC 3216MM 2SC3875S(ALY) LA801 6210VC0004A FILTER(CIRC),EMC,3216 4S600 Q213 0TR387500AA TRANSISTOR,BIPOLARS, CHIP TAIYOYUDEN 2SC3875S(ALY) LA802 6210VC0004A FILTER(CIRC),EMC,3216 4S600 Q214 0TR150400BA TRANSISTOR,BIPOLARS, CHIP TAIYOYUDEN 2SA1504S(ASY) LA803 6210VC0004A...
- Page 17 PARTS NTSC PHONO 45.75M R1110 0RD4701F609 RESISTOR,CARBON FILM, 4.7KOHM 1/6W 156-A01L RESONATOR,CRYSTAL, HC49U 6.000MHZ 30PPM 16PF R250 0RD1200H609 RESISTOR,CARBON FILM, 120 OHM 1/2 W 156-A01L RESONATOR,CRYSTAL, HC49U 6.000MHZ 30PPM 16PF R253 0RD1200H609 RESISTOR,CARBON FILM, 120 OHM 1/2 W X301 156-A02X RESONATOR,CRYSTAL, HC49U 27.000MHZ 25PPM 20PF R321...
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Page 19: Diagrams
DIAGRAMS DIAGRAMS EXPLODED VIEW L20V26 Model Parts No. PART NO. DESCRIPTION 3091V00A20G CABINET ASSY, ZENITH 120-D44E SPEAKER G705/080701A MOTORJOY 4OHM 6871VSMA75F POWER PCB ASSY 5020V00553E BUTTON SET (#39) 5020V00552H BUTTON SET 6871VSMA74A CTL PCB ASSY 6304VT2011A LCD,LC201V1-A1 20.1 6633VA0003D INVERTER ASSY, 15VOLT KUBNKM022A... -
Page 20: Block Diagram
DIAGRAMS BLOCK DIAGRAM CM154 - 923-03488 L20V26 - DIAGRAMS... -
Page 21: Main Pcb Layout
PCB LAYOUTS MAIN PCB LAYOUT CM154 - 923-03488 L20V26 - PCBS... -
Page 22: Mx Pcb Layout
PCB LAYOUTS MX PCB LAYOUT CM154 - 923-03488 L20V26 - PCBS... -
Page 23: Tuner Pcb Layout
PCB LAYOUTS TUNER PCB LAYOUT TUNER(TOP) TUNER(BOTTOM) CONTROL PANEL PCB LAYOUT POWER CONTROL CM154 - 923-03488 L20V26 - PCBS... - Page 24 - 24 -...
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Page 27: Main L20V26 Circuit
Main L20V26 Circuit CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL NOTE: WAVEFORMS AND VOLTAGES WERE MEASURED AT 120VAC, L20V26 SHEET 25 CM154 - 923-03488 REPLACE ONLY WITH PART NUMBERS SPECIFIED. CHANNEL 5, AND NSTC COLOR BARS.
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