Zenith 094a Chassis d60wlcd Sm

8/20/2019 Zenith 094a Chassis d60wlcd Sm

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SERVICE MANUAL

Product Type: Rear Projection LCDChassis: 094AManual Series: PV154Manual Part #: 923-03486Model Line: E

Product Year: 2002

General Info ................................................. 1

Service Menu ................................................ 2Servicing ..................................................... 3

Parts List ..................................................... 4Diagrams ...................................................... 5

Schematics ................................................... 6

Model Series:

CONTENTS

D60WLCD


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PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS

IMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-video servicetechnicians.

When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith ElectronicsCorporation. All components should be replaced only with types identical tothose in the original circuit and their physical location, wiring and lead dressmust conform to original layout upon completion of repairs.

Special components are also used to prevent shock and fire hazard. Thesecomponents are indicated by the letter “x” included in their componentdesignators and are required to maintain safe performance. No deviations areallowed without prior approval by Zenith Electronics Corporation.

Circuit diagrams may occasionally differ from the actual circuit used. This way,implementation of the latest safety and performance improvement changes intothe set is not delayed until the new service literature is printed.

CAUTION: Do not attempt to modify this product in any way. Never performcustomized installations without manufacturer’s approval. Unauthorizedmodifications will not only void the warranty, but may lead to property damageor user injury.

Service work should be performed only after you are thoroughly familiar withthese safety checks and servicing guidelines.

GRAPHIC SYMBOLS

The exclamation point within an equilateral triangle is intendedto alert the service personnel to important safety information inthe service literature.

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presenceof noninsulated “dangerous voltage” that may be of sufficientmagnitude to constitute a risk of electric shock.

The pictorial representation of a fuse and its rating within anequilateral triangle is intended to convey to the service personnel the following fuse replacement caution notice:CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKEDNEAR EACH FUSE.

SERVICE INFORMATION

While servicing, use an isolation transformer for protection from AC line shock.After the original service problem has been corrected, make a check of thefollowing:

FIRE AND SHOCK HAZARD

1. Be sure that all components are positioned to avoid a possibility of adjacent component shorts. This is especially important on items trans-ported to and from the repair shop.

2. Verify that all protective devices such as insulators, barriers, covers,shields, strain reliefs, power supply cords, and other hardware have beenreinstalled per the original design. Be sure that the safety purpose of thepolarized line plug has not been defeated.

3. Soldering must be inspected to discover possible cold solder joints, soldersplashes, or sharp solder points. Be certain to remove all loose foreignparticles.

4. Check for physical evidence of damage or deterioration to parts and compo-nents, for frayed leads or damaged insulation (including the AC cord), andreplace if necessary.

5. No lead or component should touch a high current device or a resistorrated at 1 watt or more. Lead tension around protruding metal surfacesmust be avoided

TIPS ON PROPER INSTALLATION

1. Never install any receiver in a closed-in recess, cubbyhole, or closelyfitting shelf space over, or close to, a heat duct, or in the path of heatedair flow.

2. Avoid conditions of high humidity such as: outdoor patio installationswhere dew is a factor, near steam radiators where steam leakage is a factor,etc.

3. Avoid placement where draperies may obstruct venting. The customershould also avoid the use of decorative scarves or other coverings thatmight obstruct ventilation.

4. Wall- and shelf-mounted installations using a commercial mounting kitmust follow the factory-approved mounting instructions. A product mountedto a shelf or platform must retain its original feet (or the equivalentthickness in spacers) to provide adequate air flow across the bottom. Boltsor screws used for fasteners must not touch any parts or wiring. Perform

leakage tests on customized installations.5. Caution customers against mounting a product on a sloping shelf or in a

tilted position, unless the receiver is properly secured.

6. A product on a roll-about cart should be stable in its mounting to the cart.Caution the customer on the hazards of trying to roll a cart with small casters across thresholds or deep pile carpets.

7. Caution customers against using a cart or stand that has not been listedby Underwriters Laboratories, Inc. for use with its specific model of television receiver or generically approved for use with TVs of the same orlarger screen size.

8. Caution customers against using extension cords. Explain that a forest of extensions, sprouting from a single outlet, can lead to disastrousconsequences to home and family.


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ELECTROSTATICALLY SENSITIVE DEVICES

Some semiconductor (solid-state) devices can be damaged easily bystatic electricity. Such components commonly are called Electro-

statically Sensitive (ES) Devices. Examples of typical ES devices areintegrated circuits and some field-effect transistors and semicon-ductor “chip” components. The following techniques should beused to help reduce the incidence of component damage caused bystatic electricity.

1. Immediately before handling any semiconductor component orsemiconductor-equipped assembly, drain off any electrostatic chargeon the body by touching a known earth ground. Alternatively, ob-tain and wear a commercially available discharging wrist strap de-vice, which should be removed for potential shock reasons prior toapplying 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 an ESD mat, toprevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ESdevices.

4. Use only an anti-static solder removal device. Some solder re-moval devices not classified as “anti-static” can generate electrical charges sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electri-

cal charge sufficient to damage ES devices.6. Do not remove a replacement ES device from its protective pack-age until immediately before you are ready to install it. (Most re-placement ES devices are packaged with leads electrically shortedtogether by conductive foam, aluminum foil, or comparable con-ductive material.)

7. Immediately before removing the protective material from theleads of a replacement ES device, touch the protective material to

the chassis or circuit assembly into which the device will be in-stalled.

Caution: Be sure no power is applied to the chassis or circuit, andobserve all other safety precautions.

8. Minimize bodily motions when handling unpackaged replace-ment ES devices. (Otherwise, seemingly harmless motion, such as thebrushing together of your clothing or the lifting of your foot from acarpeted floor, can generate static electricity sufficient to damagean ES device.)

REGULATORY INFORMATION

This equipment has been tested and found to comply with the limitsfor a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection againstharmful interference when the equipment is operated in a residential installation. This equipment generates, uses and can radiate radiofrequency energy and, if not installed and used in accordance withthe instruction manual, may cause harmful interference to radiocommunications. However, there is no guarantee that interferencewill not occur in a particular installation. If this equipment doescause harmful interference to radio or television reception, whichcan be determined by turning the equipment off and on, the user isencouraged to try to correct the interference by one or more of thefollowing measures: Reorient or relocate the receiving antenna; In-

crease the separation between the equipment and receiver; Connectthe equipment into an outlet on a circuit different from that towhich the receiver is connected; Consult the dealer or an experi-enced radio/TV technician for help.

The responsible party for this device’s compliance is:

Zenith Electronics Corporation

201 James Record Road

Huntsville, AL 35824, USA

Digital TV Hotline: 1-800-243-0000

TRADEMARKS

Dolby Digital® Manufactured under license from Dolby Laboratories.“Dolby” and the double-D symbol are trademarks of Dolby Laborato-ries. Confidential Unpublished Works. ©1992-1997 Dolby Laborato-ries, Inc. All rights reserved.

SRS and the symbol are trademarks of SRS labs, Inc. SRS technologyis incorporated under license from SRS Labs, Inc.

Licensed by BBE Sound, Inc. under USP4638258 and 4482866. BBE

and the symbol are registered trademarks of BBE Sound, Inc.

PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS


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TABLE OF CONTENTS

SECTION 1 .................... OVERVIEW

FEATURES ......................................................1-1OVERVIEW..................................................1-1

FRONT PANEL CONTROLS ...............................1-2

FUNCTION STATUS INDICATORS .......................1-3

REMOTE CONTROL ............................................1-4

REMOTE BUTTON DESCRIPTIONS ..................... 1-4

REMOTE BUTTON DESCRIPTIONS ..................... 1-5

PROGRAMMING THE REMOTE ..........................1-6

USER MENUS ................................................ 1-10

EZ HELP .................................................. 1-10SOURCE SELECTION ....................................1-10

PIP/POP/SPLIT SOURCES............................ 1-10

EZ SCAN ................................................... 1-11

CHANNEL ADD/DEL/SURF ............................ 1-12

CHANNEL LABEL SETUP ............................... 1-12

EZ LINK ................................................... 1-13

VIDEO MENU............................................. 1-13

AUDIO MENU ............................................ 1-14

ASPECT RATIO ........................................... 1-14ON-SCREEN MENUS LANGUAGE ...................... 1-15

CAPTIONS/TEXT......................................... 1-15

EZ DEMO .................................................. 1-16

AUTO CLOCK ............................................. 1-16

MANUAL CLOCK SETUP ................................ 1-16

TV TURN ON TIME ...................................... 1-17

TV TURN OFF TIME .................................... 1-17

SLEEP TIMER ............................................ 1-17

PARENTAL LOCK ........................................ 1-18

SECTION 2 ............ SERVICE MENUS

SERVICE MENU OPTIONS ...................................2-1

SECTION 3 ....................SERVICING

ADJUSTMENT INSTRUCTIONS..............................3-1

OVERVIEW..................................................3-1

ADJUSTMENT MODE ......................................3-1

INPUT SIGNAL ADJUSTMENT ..........................3-2SUB COLOR ADJUSTMENT .............................. 3-2

SCREEN POSITION ADJUSTMENT......................3-3

REPLACING THE LAMP ..................................3-5

DISASSEMBLY INSTRUCTIONS .........................3-6

CIRCUIT DESCRIPTIONS ....................................3-7

POWER BLOCK .............................................3-7

SECTION 4 ...........................PARTS

MODEL PARTS .................................................4-1

SECTION 5 .................... DIAGRAMS

D60WLCD EXPLODED VIEW.................................5-1

D60WLCD BLOCK DIAGRAM ................................5-2

D60WLCD MAIN PCB LAYOUT..............................5-3

D60WLCD POWER PCB LAYOUT ...........................5-4

D60WLCD DIGITAL PCB LAYOUT ..........................5-5

D60WLCD DRIVE PCB LAYOUT.............................5-6

D60WLCD CHROMA PCB LAYOUT .........................5-7D60WLCD TUNER PCB LAYOUT ............................5-8

D60WLCD OTHER PCB LAYOUT ............................5-9

SECTION 6 .................. SCHEMATICS

POWER SUPPLY CIRCUIT ................................... 6-1

MAIN MICRO CIRCUIT ......................................6-2

MAIN CIRCUIT ................................................6-3

LCD CONTROLLER CIRCUITS ...............................6-4

CHROMA CIRCUIT ............................................6-5TUNER CIRCUIT ...............................................6-6

LEVEL & SHIFT CONVERSION CIRCUITS ................6-7

CONTROL PANEL CIRCUIT ..................................6-8

DIGITAL CPU CIRCUITS .....................................6-9

DIGITAL INPUT/OUTPUT CIRCUITS ................... 6-10

DIGITAL HIGH DEF CIRCUITS ........................... 6-11

DIGITAL ADC CIRCUITS ...................................6-12


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OVERVIEW

FEATURES

OVERVIEW60" LCD HDTV Monitor D60WLCD

1280 x 720p Resolution

(3) 1.2" LCD Panels

3D Y/C Comb Filter

Peak Brightness: 680 cd/m2

Viewing Angle: 100° H x 30° V

Audio: 2 x 15 Watts

2 Tuner PIP/POP/Split Screen

Aspect Ratio Correction

Scratch Resistant Screen Protector

Closed captions

EZ Feature Package

VIDEO

60" Flat screen

1280 x 720p Resolution

9 Element Lens

NTSC 2 Tuner

100º x 30º Viewing Angle

16:9 Aspect Ratio

Advanced Scan Velocity Modulation

3D Y/C Comb Filter

200:1 Contrast Ratio

680cd/m2 Brightness

Picture In Picture (PIP)

Picture Outside Picture (POP)

AUDIO

MTS/SAP

30W (2 x 15W) Total Audio (Watts)

Bass Reflex

SPECIAL FEATURES

Auto Programming

Auto Demo

Channel Labels

OUTPUT

NTSC, VGA, SVGA, XGA, SXGA - 720p

HDTV - 1280 x 720p

REMOTE

Illuminated w/Thumbstick Control

REQUIRED APPROVALS

UL, C-UL, NOM UL, C-UL

UPC Code - 4464204621 7

SERVICE/LIMITED WARRANTY

Service Support Level - Module Level

MTBF - Approx. 40,000 Hours

CABINET

Table Top Cabinet Style, gray finish

Width x Height x Depth - 56.75"x42.5"x17.5"

132.2 lbs.

A/V JACKS

1 Terrestrial, 1 Cable (Analog) In, 1 Loop Out

1 Monitor Out

1 Rear, 1 Front RGB In

1 Normal Hi-Res Component Video (Resolution)

1 Rear, 1 Front S-Video In

1 S-Video Out

Composite Video In

2 Rear, 1 Front A/V In

1 Calibration Port - Serial Port/EZ-Link

ANT/CABLE

2INPUT

LOOPOUT

ANT/CABLE1INPUT

C

A

LI

B

R

AT

I

O

N

R L

RGB(XGA)

PC/DTVINPUT

VARIABLE AUDIOOUT

AUDIO

CENTERMODEIN

R L

COMPONENTINPUT2

R L Pr Pb Y

COMPONENT

S-VIDEO

VIDEO

MONO

L

R

SECTION 1


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OVERVIEW

10

AM 03:00

Ch.

13

MONO

Ch.6

Main Channel Display:Displays current channel number.

Channel Label:If a channel label has beenset, then it will appear here.

PIP Display:This displayappears whenPIP is active.

FRONT PANEL CONTROLS

1) Power On / Off

2) Menu

3) Enter (Same as ENTER buttons on your remote control)

4) VOLUME Up / Down

5) CHANNEL Up / Down

6) Operation indicater.

7) Lamp indicater.

8) Temperature indicater.

menupower enter vol ch

1

2

43 6

8

8

75


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OVERVIEW

FUNCTION STATUS INDICATORS

Lamp indicator, operation indicator, and temperature

indicator, located below the front panel controls reveal the operating status of the LCD projection TV.

menupower enter vol ch

Operation Indicator

Lamp Indicator

Temperature Indicator

Off Power is not connected.

Red Power Cord is connected, unit is on standby.

Green OnOrange (Flashing) Preparing operation in standby.

Orange Projection lamp is nearing the end of its life and needs

to be replaced with a new lamp.

Red (Flashing) There is a problem with the lamp or around it. Contact

an authorized service center.

Green (Flashing) The lamp cover is not closed.

Orange The projector is overheating.

Red The projector shutdown due to overheating.Red (Flashing) The projector shutdown, check the cooling fan.

Operation Indicator

Lamp Indicator

Temperature Indicator


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REMOTE CONTROL

REMOTE BUTTON DESCRIPTIONS

1 2 3

4 5 6

7 8 9

0

RATIOChanges the screen formator aspect ratio.

HELPBrings up the on-screen EZHelp menu while you are in

normal viewing.EXITClears all on-screen dis-

plays and returns to TVviewing from any menu.

SURFScrolls the Surf channellist.

PIP CH +Changes to next higher PIPchannel.

PIPToggles between PIP, POP(Picture-out-of-Picture) andSplit screen.

MUTESwitch the sound on or off

THUMBSTICK Allows you to navigate the on-

screen menus and to adjust thesystem settings and preferences,by moving to an option with the

arrows and selecting the highlightedoption with . If is pressed while

you are in normal viewing, theinformation banner is displayed.

TVSelects the analog TV signal.

MODESelects the remote operating mode:TV, VCR, Cable, DVD and Satellite.

VIDEOToggles between Video 1 and

Video 2 input sources.

FRONTSelects the front video sig-nal if a device, such as acamcorder or game player,is connected to the frontvideo input jack.

PIP CH -Changes to next lower PIP

channel

SWAPSwap the signal from

your PIP window tothe main screen.

LIGHTIlluminates the remote con-trol keys.

INDICATOR LIGHTShow active remote modeevery time any button ispressed.

REMOTE CONTROL


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REMOTE CONTROL

REMOTE BUTTON DESCRIPTIONS

1 2 3

4 5 6

7 8 9

0

POWERTurns your EntertainmentMachine or any other pro-grammed equipment on or off, depending on mode.

MODE BUTTONSSelect other operating modes, for

the remote to control externaldevices.

CHANNEL UP/DOWNScrolls through available chan-nels in EZ Scan memory.

NUMBER KEYPADFor direct channel selection and

programming functions.

ENTERWhen in the menu systemand other on-screen dis-plays, selects high lightedoptions.

RECORD, PAUSE, REW,

FFWD, PL AY, STOP

Control the functions on your VCR.

VOLUME UP/DOWNIncreases/decreases the sound

level.

MENUBrings up the main menu

to the screen.

SKIPWorks as a song selector in audio mode and a moviechapter selector inaux/DVD mode.

COMPONENT 1, 2Selects component signal sources,

such as DVD or HD receiver.

“DASH” BUTTON

Is used to enter a program number for multiple program channels.

ENTERSelects the highlighted optionin the menu system or on-screen displays.

FLASH BKTunes to the last channelviewed.

FREEZE

Captures and freezes thecurrently-viewed screen inPIP.

RGBSelects PC or RGB inputsources.


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REMOTE CONTROL

PROGRAMMING THE REMOTE

The remote control of your HD receiver is a multibrandor universal remote control that can be programmed to

operate most remote-controllable components of othermanufacturers. Note that the remote control may not

control all models of other brands.

To find out whether your remote control can operate the

component without programming, turn on thecomponent such as the VCR and press the correspondingmode button (VCR) on the remote control while pointing

at the component. Test the POWER and CH +/- buttons

to see if the component responds properly. If not, theremote requires programming to operate the device.

Turn on the component to be programmed. Then press

the corresponding mode button on the remote control.Press the POWER button and the MUTE button

simultaneously. Then the remote control is ready toprogram the code for the corresponding component.

There are two ways to find the right code for thecomponent.

Brand Codes

ABC 003 004 039

042 046 052

053

ANTRONIK 014

ARCHER 005 007 014

024

CABLE STAR 026

CENTURION 092

CENTURY 007

CITIZEN 007

COLOUR VOICE 065 090

COMBANO 080 081

COMTRONICS 019 030

DIAMOND 023

EAGLE 020 030 040

EASTERN 057 062 066

ELECTRICORD 032

GE 072

GEMINI 008 022 025

Brand Codes

008 009 010

052 069 074

LG 255

M-NET 037

MACOM 033

MAGNAVOX 010 012 064

079

MEMOREX 001

MOVIE TIME 028 032

NSC 015 028 038

071 073

OAK 016 031 037

053

PANASONIC 044 047

PARAGON 001

PHILIPS 006 012 013

020 065 085

090

PIONEER 034 051 052

Brand Codes

REGAL 049 050

REGENCY 057

REMBRANT 025

RK 091

SAMSUNG 030 068

SCIENTIFIC ATLANTA 003 011 041

042 043 045

046

SHERITECH 022

SIGNAL 030

SIGNATURE 052

SL MARX 030

SPRUCER 047 078

STARCOM 002 004 008

009

STARGATE 008 030

SYLVANIA 067

TADIRAN 030

TANDY 017

Brand Codes

032 035

VIEWSTAR 012 015 018

086 087 088

089

ZENITH 001 060 093

CABLE BOX CODES

A. If you press the CH +/- buttons repeatedly, the codewill change one at a time. Press the POWER button aftereach code change. If the right code is found, the device

will turn off.

B. Enter a code number using the number buttons onthe remote. The right code numbers for the correspondingcomponent can be found on the following pages. Again,

if the code is correct, the device will turn off.

Press the EXIT button to store the program. Test theremote control functions to see if the componentresponds properly. If not, repeat from step 2.


11/88

REMOTE CONTROL

TV CODES

Brand Codes

A MARK 112 143

ADMIRAL 072 081 161

AKAI 006 146

AMPRO 073 167

AMSTRAD 052

ANAM 043 054 056

080 104 108

112 115 118

121 131

AOC 004 006 058

112BLAUPUNKT 088

CANDLE 002 003 004

006

CAPEHART 058

CETRONIC 043

CITIZEN 002 003 004

006 043 101

103 143

CLASSIC 043

CONCERTO 004

CONTEC 039 043 050051

CORONADO 143

CRAIG 043 054

CROWN 043 143

CURTIS MATHES 004 006 101

116 143

CXC 043

DAEWOO 004 016 017

043 044 055

071 076 103

107 111 114

117 120 123

125 127 128

136 143

DAYTRON 004 116 143

DYNASTY 043

DYNATECH 062

ELECTROHOME 024 077 143

EMERSON 004 005 006

028 043 047

048 050 051

096 116 143

151 153 154

155

FISHER 007 057

FUNAI 028 043

FUTURETECH 043

GE 004 006 008

Brand Codes

GOLDSTAR 004 102 106

110 112 113

116 119 122

127 137 143

HALL MARK 004 116

HITACHI 004 006 009

010 011 012

023 041 075

143 158 163

166

INFINITY 164INKEL 129

JBL 164

JCPENNY 004 006 008

009 024 030

065 101 143

156 160

JENSEN 013

JVC 034 038 070

083 145

KEC 043

KENWOOD 006 070KLOSS 002 059

KMC 143

KTV 006 043 143

154

LG 255

LODGENET 072

LOGIK 072

LUXMAN 004

LXI 007 015 052

081 160 164

166

MAGNAVOX 003 004 006

022 059 060

061 063 064

127 143 160

164

MARANTZ 006 077 164

MATSUI 164

MEMOREX 004 007 072

116

METZ 088

MGA 004 006 024

028 042 049

077 116

MINERVA 088

MITSUBISHI 004 006 024

028 040 042

109 116 124

Brand Codes

019 024 040

056 130 132

134

NIKEI 043

ONKING 043

ONWA 043

OPTONICA 019 081

PANASONIC 034 056 080

092 164

PHILCO 003 004 006

024 043 056059 060 063

064 127 143

164

PHILIPS 003 004 005

006 038 059

070 093 143

160 164

PIONEER 006 018 023

025 027 116

135 176

PORTLAND 004 143PROSCAN 144 160 161

165 167

PROTON 004 058 116

131 143 171

173

QUASAR 034 056 092

RADIO SHACK 019 043 047

116 127 143

RCA 004 006 023

024 056 065

074 144 152

156 160 161

165

REALISTIC 007 019 043

047

ROCTEC 186

RUNCO 168 169

SAMPO 004 006 058

116

SAMSUNG 004 050 089

101 105 113

116 127 133

137 143 160

SANYO 007 020 021

033 039 053

057 082 166

SCOTT 004 028 043

048 116 143

Brand Codes

Sharp 004 014 019

022 028 029

081 143 170

175

SIEMENS 088

SIGNATURE 072

SONY 041 070 079

085 126 139

147 185

SOUNDESIGN 003 004 028

043 116SPECTRICON 112

SSS 004 043

SUPRE MACY 002

SYLVANIA 003 004 006

044 059 060

063 064 116

127 140 160

164

TANDY 081

TATUNG 056 062

TECHNICS 034 080 084TECHWOOD 004

TEKNIKA 002 003 004

006 024 028

031 043 072

077 101 103

143

TELEFUNKEN 037 046 086

087

TELERENT 072

TERA 172

TMK 004 116

TOSHIBA 007 015 030

040 051 062

101 138

TOTEVISION 143

UNIVERSAL 008 009

VIDEO CONCEPTS 146

VIDIKRON 174

VIDTECH 004 116

WARDS 004 008 009

019 028 060

061 063 064

072 074 116

143 164

YAMAHA 004 006

YORK 004 116

YUPITERU 043

ZENITH 001 072 073


12/88

REMOTE CONTROL

VCR CODES

Brand Codes

AIWA 034

AKAI 016 043 046

124 125 146

AMPRO 072

ANAM 031 033 103

AUDIO DYNAMICS 012 023 039

043

BROKSONIC 035 037 129

CANON 028 031 033

CAPEHART 108

CRAIG 003 040 135CURTIS MATHES 031 033 041

DAEWOO 005 007 010

064 065 108

110 111 112

116 117 119

DAYTRON 108

DBX 012 023 039

043

DYNATECH 034 053

ELECTROHOME 059

EMERSON 006 017 025027 029 031

034 035 036

037 046 101

129 131 138

153

FISHER 003 008 009

010

FUNAI 034

GE 031 033 063

072 107 109

144 147

GO VIDEO 132 136


101 106 114

123

HARMAN KARDON 012 045

HITACHI 004 018 026

034 043 063

137 150

INSTANTREPLAY 031 033

JCL 031 033

JCPENNY 012 013 015

033 040 066

101

JENSEN 043

JVC 012 031 033

043 048 050

Brand Codes

055 060 130

150 152

KENWOOD 014 034 039

043 047 048

LG 255

LLOYD 034

LXI 003 009 013

014 017 034

101 106

MAGIN 040

MAGNAVOX 031 033 034041 067 068

MARANTZ 012 031 033

067 069

MARTA 101

MATSUI 027 030

MEI 031 033

MEMOREX 003 010 014

031 033 034

053 072 101

102 134 139

MGA 045 046 059MINOLTA 013 020

MITSUBISHI 013 020 045

046 049 051

059 061 151

MTC 034 040

MULTITECH 024 034

NEC 012 023 039

043 048

NORDMENDE 043

OPTONICA 053 054

PANASONIC 066 070 074

083 133 140

145

PENTAX 013 020 031

033 063

PHILCO 031 034 067

PHILIPS 031 033 034

054 067 071

101

PILOT 101

PIONEER 013 021 048

PORTLAND 108

PULSAR 072

QUARTZ 011 014

QUASAR 033 066 075

145

RCA 013 020 033

Brand Codes

034 040 041

062 063 107

109 140 144

145 147

REALISTIC 003 008 010

014 031 033

034 040 053

054 101

RICO 058

RUNCO 148

SALORA 014SAMSUNG 032 040 102

104 105 107

109 112 113

115 120 122

125

SANSUI 022 043 048

135

SANYO 003 007 010

014 102 134

SCOTT 017 037 112

129 131SEARS 003 008 009

010 013 014

017 020 031

042 073 081

101

SHARP 031 054 149

SHINTOM 024

SONY 003 009 031

052 056 057

058 076 077

078 149

SOUNDESIGN 034

STS 013

SYLVANIA 031 033 034

059 067

SYMPHONIC 034

TANDY 010 034

TATUNG 039 043

TEAC 034 039 043

TECHNICS 031 033 070

TEKNIKA 019 031 033

034 101

THOMAS 034

TMK 006

TOSHIBA 008 013 042

047 059 082

112 131

Brands Codes

TOTEVISION 040 101

UNITECH 040

VECTOR RESEARCH 012

VICTOR 048

VIDEO CONCEPTS 012 034 046

VIDEOSONIC 040

WARDS 003 013 017

024 031 033

034 040 053

054 131

YAMAHA 012 034 039043

ZENITH 001 034 048

056 058 072

080 101


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REMOTE CONTROL

SATELLITE BOX CODES

DVD CODES

Brand Codes

ALPHASTAR DSR 123

AMPLICA 050

BIRDVIEW 051 126 129

BSR 053

CAPETRONICS 053

CHANNEL MASTER 013 014 015

018 036 055

CHAPARRAL 008 009 012

077

CITOH 054

CURTIS MATHES 050 145

DRAKE 005 006 007

010 011 052

112 116 141

DX ANTENNA 024 046 056

076

ECHOSTAR 038 040 057

058 093 094

095 096 097

098 099 100

122

ELECTRO HOME 089EUROPLUS 114

FUJITSU 017 021 022

Brand Codes

027 133 134

GENERAL INSTRUMENT 003 004 016

029 031 059

101

HITACHI 139 140

HOUSTON TRACKER 033 037 039

051 057 104

HUGHES 068

HYTEK 053

JANIEL 060 147

JERROLD 061

KATHREIN 108

LEGEND 057

LG 255

LUTRON 132

LUXOR 062 144

MACOM 010 059 063

064 065

MEMOREX 057

NEXTWAVE 028 124 125

NORSAT 069 070

PACE SKY SATELLITE 143PANASONIC 060 142

PANSAT 121

Brand Codes

PERSONAL CABLE 117

PHILIPS 071

PICO 105

PRESIDENT 019 102

PRIMESTAR 030 110 111

PROSAT 072

RCA 066 106

REALISTIC 043 074

SAMSUNG 123

SATELLITE SERVICE CO 028 035 047

057 085

SCIENTIFIC ATLANTA 032 138

SONY 103

STARCAST 041

SUPER GUIDE 020 124 125

TEECOM 023 026 075

087 088 090

107 130 137

TOSHIBA 002 127

UNIDEN 016 025 042

043 044 045

048 049 078079 080 086

101 135 136

Brand Codes

VIEWSTAR 115

WINEGARD 128 146

ZENITH 001 081 082

083 084 091

120

Brand Codes

APEX DIGITAL 022

DENON 020 014

GE 005 006


HARMAN KARDON 027

JVC 012

LG 001 010 016

Brand Codes

025

MAGNAVOX 013

MARANTZ 024

MITSUBISHI 002

NAD 023

ONKYO 008 017

PANASONIC 003 009

Brand Codes

PHILIPS 013

PIONEER 004 026

PROCEED 021

PROSCAN 005 006

RCA 005 006

SAMSUNG 011 015

SONY 007

Brand Codes

THOMPSON 005 006

TOSHIBA 019 008

YAMAHA 009 018

ZENITH 010 016 025


14/88

USER MENUS

USER MENUS

EZ HELP

EZ Help was created as an aid for you to understandmenu functions in an easy and convenient way. Whenyou navigate through the Menu, press and hold the HELP

(?) button on your remote control to learn about thehighlighted option or feature, information about the

highlighted option will be displayed on the right sideof the TV screen. Press and hold HELP (?) to see the

highlighted information.

The HELP (?) button on the remote control can be usedin two ways. You can press the HELP (?) buttonindependently to display the EZ HELP feature. When a

MENU is already displayed, you can press the HELP (?) togo to the EZ HELP feature.

To use the EZ Help feature:

1. Press the HELP (?) button on the remote control to

display the EZ Help menu.

2. Scroll up and down to select EZ Help menu optionsusing the Up and Down Arrows on the remote con-trol thumb stick.

3. Move the highlight by using the thumb stick. Theexplanations of the highlighted option will be dis-

played on the right side or at the bottom of thescreen

on the remote control, then use the UP/DOWN arrowbutton to select the Setup menu.

Press ENTER or the RIGHT arrow button to access theSetup menu. Use the UP/DOWN arrows to select Main

source. Press ENTER or the RIGHT arrow to access theMain source menu, then use the UP/DOWN arrow button

to select the source. Your picture source options are:Ant/Cable 1 (Ant/Cable 2), Video 1,Video 2, Front Video,

Component 1,Component 2, RGB-PC and RGB-HD/STB.Press EXIT to save and return to TV viewing or press theLEFT arrow to save and return to the previous Menu. Not

all sources are available for PIP.

PIP/POP/SPLIT SOURCESPIP (Picture-in-Picture) / POP (Picture-out-of-Picture)

/ SPLIT modes let you watch main and sub pictures at

the same time. PIP/POP/SPLIT modes turn off in instancesindicated below.


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USER MENUS

· Changing main source

· Changing Aspect Ratio

· Activating Channel Add/Del/Surf, Channel Label orChannel Block in Setup menu

· Activating Help menu

PIP

Press the PIP button on the remote control to activate

PIP (Picture in Picture) mode. Press the LEFT/RIGHTarrow to select CH+/-, Swap, Source or Move.

CH+/-: Use the UP/DOWN arrow to select a programfor the sub picture. Changing programs onthe sub picture is only possible if the PIPsignal source is NTSC RF signal. If you want to

change the program on the main picture, press

ch +/- button.

Swap: Use the UP/DOWN arrow to swap main and subpicture.

Source: Use the UP/DOWN arrow to select a source forsub picture. Your choices are: TV, Video 1/2,

Front, Component 1/2. RGB-HD/STB and RGB-PC input sources cannot used as PIP screen

source.

Move: Use the UP/DOWN arrow to move the sub pic-ture on the screen.

Press the EXIT button to exit PIP mode or press the

PIP button again to activate POP mode.

POP

Press the PIP button on the remote control while in

Press the EXIT button to exit POP mode or press the

PIP button again to activate Split mode. Press theLEFT/RIGHT arrow in Split mode to select CH+/-, Swap,

or Source.

CH+/-: Use the UP/DOWN arrow to select a programfor the sub picture. Changing programs in thesub picture is only possible if the PIP source

is NTSC RF signal. To change the program forthe main picture, use ch +/- button.

Swap: Use the UP/DOWN arrow to swap main and sub

pictures.Source: Use the UP/DOWN arrow to select a source for

sub picture. Your choices are: TV, Video 1/2,

Front, Component 1/2. RGB-PC input cannotused for the PIP picture source.

Press the EXIT button to exit Split mode. Press the


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USER MENUS

Press ENTER or the RIGHT arrow to access the EZ Scanmenu, then use the UP/DOWN arrows to select: ANT1 Air,

ANT1 Cable, ANT2 Air or ANT2 Cable. Press ENTER or theRight arrow button to start the EZ Scan channel search.

CHANNEL ADD/DEL/SURF

There are two different types of channel lists in memory:“Custom list” and “Surf list” from the default channel list

made in the EZ SCAN menu.

A custom list can be created by toggling each channel

on or off with (Enter). Once a channel is highlighted,you will be able to see whether the channel is currentlyadded or deleted by referring to the small window at the

top-left corner of the screen.

You can create your own Surf list with up to 16 channels.

It appears at the bottom-left corner of the screen. Pressthe Surf button on the remote control when a channel ishighlighted to add or delete the channel in the Surf list.

Press EXIT to save and return to TV viewing or press

MENU to save and return to the previous menu.

CHANNEL LABEL SETUP

Choose preset labels for your channels. Use Channel +/-

on your remote control in the CH Label menu to select achannel for labeling, and choose a suitable label for yourchannel by pressing to set the label to the selected

channel.

Press the MENU button on the remote control, then usethe UP/DOWN arrow button to select the SETUP menu.

Press ENTER or the RIGHT arrow button to access the


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USER MENUS

You will now see a screen filled with Labels and a preview

screen. Use channel UP/DOWN button on your remote toselect the a channel to Label. Use the UP/DOWN and

LEFT/RIGHT arrows to select the appropriate label forthe channel and press ENTER to set the Label to theselected channel. Repeat 5 and 6 steps until all channels

are Labeled. Press EXIT to save and return to TV viewing.

EZ LINK Lets you link the Zenith’s READY TV (Model: D60WLCD)and Zenith’s high definition set set-top box for DIRECTVvia an RS-232C cable.

After installing EZ link, you can control a set-top box

for DIRECTV with a remote control of Zenith’s READY TV.Press the MENU button on the remote control, then use

the UP/DOWN arrow button to select the Setup menu

VIDEO MENU

Lets you adjust the picture appearance to suit yourpreference and viewing situations. You can manually

adjust the levels of picture quality settings, such asContrast, Brightness, Sharpness, etc. You can also select

the preset value in the EZ Video menu based on theprogram category.

Press the MENU button on the remote control, then use

the UP/DOWN arrow button to select the VIDEO menu.Press ENTER or the RIGHT arrow button to access theVIDEO menu. Use the UP/DOWN arrows to select one of

the following options.

Your options are:

Contrast: Adjusts the difference between the light anddark levels of the picture. Press the right arrow

button to activate adjusting.

Brightness: Adjusts the white or light level of the over-

all picture.

Sharpness: Adjusts the level of crispness in the edges

between the light and dark areas of the picture.The lower the level, the softer the image.

Color: Adjusts the intensity of all colors.

Tint: Adjusts the balance between the red and greenlevels.

EZ Video: Lets you choose the preset value of the pic-ture settings. Custom: Lets you adjust the picturesettings manually. Normal: Restores the levels to

their original picture settings Movie Adjusts Video


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USER MENUS

Sports: Sets the picture settings to the levels that aremore suitable to view sporting events. Contrast

and Color levels are raised so that an action scene

appears clear and brilliant. Weak Signal: Adjuststhe picture settings to compensate for a weak signal

reception. Contrast, Color and Sharpness levels arelowered to hide the picture imperfections. Day-

light: Increases the levels of all picture settingsto fit daylight conditions.

Use the LEFT/RIGHT arrows to adjust the option to yourpreference. Press ENTER to save your choices and return

to the previous menu or use the UP/DOWN arrows toselect another option.

AUDIO MENU

Lets you adjust the sound to. Press the MENU buttonon the remote control, then use the UP/DOWN arrow

button to select the AUDIO menu.

Press ENTER or the RIGHT arrow button to access the

AUDIO menu. Use the UP/DOWN arrows to select one of the following options. Your options are:

Bass: Increases or decreases the lower frequencysounds of the TV speakers.

Treble: Increases or decreases the higher frequencysounds of the TV speakers. Increases in treble, for

example, make voice or string sounds stand out

B l L dj h l f i h b l

Stadium: Stresses high frequency sounds and frontsurround sound to create the sensation you would

experience in a stadium.

News: Increase high frequency sounds to empha-size the human voice.

Music: Increase both high and low frequency sounds

to stress the sounds of musical instruments.

Theater: Stresses both high and low frequency

sounds, in addition to the front surround sound,to create the sensation you would experience in a

theater.

EZ SoundRite: Scans for changes in sound level during commercials, then adjusts the sound tomatch the current audio level of the TV program

you are watching.

Audio Mode: Lets you choose the default audio

mode for conventional analog programs. When youhear a program broadcast in mono, you will hearonly monaural sound, even though Stereo mode is

set. When Second Audio Program (SAP) mode isset, the program’s second audio program, usually

the program’s dialog in another language, (if pro-vided), is broadcast in mono.

Front Surround: Increases the front surround soundto create more open and expanded sound.

Internal Speaker: Allows you to toggle the TV in-ternal speakers Stereo, Center or off. If you want

to use your external hi-fi stereo system, turn off

the internal TV speakers. However, you may usethe internal TV speakers as a center speaker tocreate a surround effect.

Use the UP/DOWN arrows to select your preference (Bass,Treble, Balance), and then use the LEFT/RIGHT arrows

to adjust the option to your preference. Press ENTER tosave your choices and return to the previous menu.

ASPECT RATIO


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USER MENUS

When you receive an analog picture with a 4:3 aspectratio, you need to specify how the picture is to be

displayed. Press the MENU button on the remote control,

then use the UP/DOWN arrow button to select theSPECIAL menu. Or press the RATIO button to instantly

access the Aspect Ratio menu. Press ENTER or the RIGHTarrow button to activate the Special menu. Use the UP/

DOWN arrows to choose Aspect Ratio. Press ENTER or theRIGHT arrow button to move into the Aspect Ratio

selection menu.

Use the UP/DOWN arrow buttons to select the right ratio

for your viewing environment:

Normal - Choose when you want to view a picture with

an original 4:3 aspect ratio, with black bars ap-pearing at both the left and right sides.

Wide - Choose when you want to adjust the picturehorizontally, in linear proportion to fill the entire

screen. (Useful for viewing 4:3 formatted DVDs.)

Panorama - Choose when you want to adjust the pic-

ture in a non-linear proportion, that is, more en-larged at both sides, to create a spectacular view.

Zoom1 - Choose when you want to view the picturewithout any alteration. However, the top and bot-

tom portions of the picture will be cropped.

Zoom2 - Choose when you want the picture to be al-

tered, both horizontally extended and verticallycropped. The picture taking a halfway trade off

between alteration and screen coverage. Press EXITto save and return to TV viewing or press the EN-

TER button to save and return to the previousmenu.

ON-SCREEN MENUS LANGUAGE

Lets you select your preferred language for the menus,English, Spanish, or French.

Press the MENU button on the remote control, then usethe UP/DOWN arrow button to select the Special menu.

Press ENTER or the RIGHT arrow button to activate the

Special menu. Use the UP/DOWN arrows to chooseTrilingual Menus. Press ENTER or the RIGHT arrow button

to move into the Language selection menu. Use theUP/DOWN arrow button to select the language you wish

to view on your on-screen menus. Press EXIT to saveand return to TV viewing or press the ENTER button to

save and return to the previous menu.

CAPTIONS/TEXT

Lets you select a closed caption mode for displaying

captioning information when provided on the program.

Closed Caption (CC) displays information at any position

on the screen, usually the program’s dialog. Text displaysinformation, usually at the bottom position and is used

for a data service, generally not program related. Pressthe MENU button on the remote control, then use the

UP/DOWN arrow button to select the SPECIAL menu.

Press ENTER or the RIGHT arrow button to activate theSPECIAL menu. Use the UP/DOWN arrows to chooseCaptions, then press ENTER or the Right arrow button.

Use the UP/DOWN arrow buttons to make your captionselection. Your choices are: Off, Caption 1, Caption 2,Caption 3, Caption 4, Text 1, Text 2, Text 3 and Text 4.

Press EXIT to save and return to TV viewing or press the


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USER MENUS

EZ DEMO

Shows you how to navigate the on-screen menus of your

TV.

Press the MENU button on the remote control, then usethe UP/DOWN arrow button to select the SPECIAL menu.Press ENTER or the RIGHT arrow button to activate the

SPECIAL menu. Use the UP/DOWN arrows to choose EZDemo, then press ENTER or the RIGHT arrow button toactivate EZ Demo. Press exit button on the remote to

stop EZ Demo.

AUTO CLOCK

Sets the time automatically through the PBS broadcastsignal.

then press ENTER or the RIGHT arrow button to activatethe Auto Clock option then use the UP/DOWN arrow

button to make your auto clock selection. Use the

number buttons to set the PBS channel.

Time Zone - Lets you select the time zone of your viewingarea. Daylight Savings - Lets you set Daylight Savings

On or Off, depending on whether or not your viewingarea observes Daylight Savings.

If you select Auto Clock, use the RIGHT arrow to chooseOn or off. If you select on, select the SET and then press

the ENTER button. If you select off, press EXIT to returnto TV viewing or press the ENTER button to save and

return to the previous menu. Your choices are savedwhen Auto Clock is set.

MANUAL CLOCK SETUP

Enables you to enter the time using the number buttonson your remote control.


the UP/DOWN arrow button to select the TIME menu.Press ENTER or the RIGHT arrow button to activate the

TIME menu. Use the UP/DOWN arrow button to chooseManual Clock, then press the RIGHT arrow to activateManual Clock.

Use the UP/DOWN arrows to make your Manual Clock

selection. Your choices are: Year, Date and Time. Use thenumber buttons to set the Year, Date and Time. PressEXIT to save and return to TV viewing or press the ENTER


21/88

USER MENUS

TV TURN ON TIME

Lets you set an automatic turn on time for your TV.

Press the MENU button on the remote control, then usethe UP/DOWN arrow button to select the Time menu.

Press ENTER or the RIGHT arrow button to activate the

Time menu. Use the UP/DOWN arrows to choose On Timethen press the RIGHT arrow to activate On Time. Usethe UP/DOWN arrows to choose On or Off. Use the numberbuttons to set the On Time options. Press EXIT to save

and return to TV viewing, or press the ENTER button tosave and return to the previous menu. You must set the

current time before using on/off time function.

TV TURN OFF TIME

Lets you set an automatic daily turn off time for your

TV.

and return to TV viewing, or press the ENTER button tosave and return to the previous menu.

SLEEP TIMERLets you select the amount of time before your TVautomatically turns itself off.


the UP/DOWN arrow button to select the TIME menu.Press ENTER or the RIGHT arrow button to activate theTIME menu. Use the UP/DOWN arrows to choose Sleep

Timer then press the RIGHT arrow to activate Sleep Timer.Use the UP/DOWN arrows to choose a preset turn off

time.

Press EXIT to save and return to TV viewing, or pressthe ENTER button to save and return to the previousmenu.


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USER MENUS

PARENTAL LOCK

Lets you block specific channels, ratings and othersources based on the blocking schemes.

A password is required to gain access to this menu if

the Lock System is activated. Press the MENU button on

the remote control, then use the UP/DOWN arrow buttonto select the LOCK Menu. Press ENTER or the RIGHT arrowbutton to activate the LOCK Menu. See the next page

for more details on your blocking options. Use the UP/ DOWN arrows to choose from the following LOCK Menuoptions. Lock On/Off: Activates or disables the blocking

scheme you set up previously.

Set Password: Changes the password by inputting a

new password twice.

Movie (MPPA): Blocks movies according to the movie

ratings limit, so children cannot view certain mov-ies. You can see the ratings limit by blocking out

all the movies with the ratings above a specifiedlevel. Keep in mind that the movie ratings limit

only applies to movie shown on TV, not TV pro-grams, such as soap operas.

TV-PG (Children): Keeps children from watching cer-

tain TV programs among only the programs in-tended for children, according to the ratings limit.This rating does not apply to other TV programs.Unless you block certain TV programs intended for

mature audiences in the TV Rating - General menu,your children may view those programs.

Ratings:

TV-Y7 (Directed to Older Children): This program isdesigned for children age 7 and above.

TV-G (General audience): Most parents would find thisprogram suitable for all ages.

TV-PG (Parental guidance suggested): This programcontains material that parents may find unsuit-

able for younger children.

TV-14 (Parents strongly cautioned): This program con-

tains some material that many parents would findunsuitable for children under 14 years of age.

TV-MA (Mature audience only): This program is spe-cifically designed to be viewed by adults and there-

fore may be unsuitable for children under 17.

G - (General audiences): All ages admitted.

PG - Parental guidance suggested: Some material maynot be suitable for children.

PG-13 - Parents strongly cautioned: Some material may

not be appropriate for children under 13.

R- (Restricted): Children under 17 require accompa-

nying parent or adult guardian.

NC-17: No one 17 and under admitted.

TV-Y (All Children): This program is determined to beappropriate for all children.

X: Adult admitted only.

NR: Not rated movie.

section 2


23/88

SERVICE MENU OPTIONS

To access the Service Menu, press and hold the MENU

key until the User Menu display disappears, then press

1937, and then ENTER to access the Service Menu. 0-F FACT MENU: Use SELECT UP and DOWN Keys to select item00, the Factory Mode. This item is used by the Factory

when the module is being tested. It has two positions:0 and 1. In the field, this item should always be left off

(Zero is off).

When this item is off, only the first twenty-two items inthe Service Menu can be accessed. They appear one at a

SERVICE MENUS

time near the middle left of the screen. When this item

is set to 1, 66 menu items are available.

When the Service Menu is on, the AC Power-On feature isalways enabled regardless of the setting of AC ON in the

Service Menu. The TV set will automatically come on whenAC is applied.

Use the remote to reenter the Service Menu to turn theService Menu off. The Factory Mode may also be turnedoff by setting the clock, or running the Auto Program

feature in the customer Set Up menu.

ITEM OSD FUNCTION DEFAULT DESCRIPTION

TA1270AF 1270(M) S-Cont Main Contrast 0-31 Adjustment

1270(S) S-Cont Sub Contrast 0-31 Adjustment

1270(M) S-Color Main Color 0-31 Adjustment

1270(S) S-Color Sub Color 0-31 Adjustment

ET2090 2090 R_HOR_POS Horizontal Position 0-511 Adjustment

2090 G_HOR_POS Horizontal Position 0-511 Adjustment2090 B_HOR_POS Horizontal Position 0-511 Adjustment

M62352 V_REF V-Reference Voltage Adjustment 0-255 Adjustment

R_NRS_H Noise Reduction Signal Adjustment 0-255 Adjustment

G_NRS_H Noise Reduction Signal Adjustment 0-255 Adjustment

B_NRS_H Noise Reduction Signal Adjustment 0-255 Adjustment

R_VCOM Flicker Adjustment 0-255 Adjustment

G_VCOM Flicker Adjustment 0-255 Adjustment

B_VCOM Flicker Adjustment 0-255 Adjustment

GAMMA R R_X0_S_MODE 1 Tone Gray Adjustment 0-1023 Adjustment

R_X1_S_MODE 2 Tone Gray Adjustment 0-1023 Adjustment













INSTALLERS MENU


24/88

SERVICE MENUS

ITEM OSD FUNCTION DEFAULT DESCRIPTIONGAMMA G G_X0_S_MODE 1 Tone Gray Adjustment 0-1023 Adjustment

G_X1_S_MODE 2 Tone Gray Adjustment 0-1023 Adjustment















GAMMA B B_X0_S_MODE 1 Tone Gray Adjustment 0-1023 AdjustmentB_X1_S_MODE 2 Tone Gray Adjustment 0-1023 Adjustment

B_X2_S_MODE 3 Tone Gray Adjustment 0-1023 Adjustment

* Resetting the lamp time: After pressing the "?" key, press the “9876“ and press the "OK" button.

INSTALLERS MENU

SECTION 3


25/88

SERVICE ADJUSTMENTS

ADJUSTMENT INSTRUCTIONS

OVERVIEW

The power source isolation of this LCD Projection TV isnot a charging type and you may not use the transformer

for isolation. To protect the equipment, adjust the setwith a transformer between the power supply cable andthe wall outlet.

Adjustments must be performed in the correct sequenceand at 5-25°C of temperature and 10-65% of relative

humidity. The input voltage of the receiver must be keptat 120V, 60Hz while adjusting. The set must be operated

for 5 minutes before adjustment. The preliminary operationmust be performed after receiving 100% white pattern(Standard signal may be used if unavoidable).

ADJUSTMENT MODE

(1) All adjustment modes are accessed by pressing “MENU9, 8, 7, 6, then ENTER” on the service remote control,after adjustment press the ENTER key to exit

adjustment mode.

(fig. 1) The first screen of adjustment mode

0.TA1270AF

1.ET2090

2.M62352

3.Gamma R

4.Gamma G

5.Gamma B

6.Psition Control

(2) Select menu to adjust by using (CH+), (CH-), thenselect the item to be adjusted by pressing the (Enter)

key.

(3) After entering the SUB menu, select the SUB menuitem to be adjusted using (CH+), (CH-) key and adjust

the value of adjustment with using the volume+,

volume- key.

(4)SUB menu composition of each adjustment mode

(5) Press the ENTER key to exit adjustment mode.

1) TA120AF: MAIN/PIP SUB CONROST AND COLOR

2) ET2090: Adjustment of each R/G/B PIXEL unit.When adjustment is needed, JS parts and all as-

semblies should be adjusted.

1.2090 R_HOR_POS 297

2.2090 G_HOR_POS 297

3.2090 B_HOR_POS 297

3) M62352: VREF, NRS, VCOM ADJUSTMENT.

1.M62352 V_REF 204

2.M62352 R_NRS_H 192

3.M62352 G_NRS_H 1924.M62352 B_NRS_H 192

5.M62352 R_VCOM 159

6.M62352 G_VCOM 159

7.M62352 B_VCOM 159

4) Gamma R: gamma R hand operation adjustment.

1.R_X0_S_MODE 200

2.R_X1_S_MODE 302

3.R_X2_S_MODE 454

4.R_X3_S_MODE 508

5.R_X4_S_MODE 544

6.R_X5_S_MODE 569

7.R_X6_S_MODE 593

8.R_X7_S_MODE 612

9.R_X8_S_MODE 630

10.R_X9_S_MODE 646

11.R_X10_S_MODE 660

12.R_X11_S_MODE 677

13.R_X12_S_MODE 693

14.R_X13_S_MODE 710

15.R_X14_S_MODE 728

16.R_X15_S_MODE 756


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SERVICE ADJUSTMENTS

5) Gamma G: gamma G hand operation adjustment.

1.G_X0_S_MODE 802.G_X1_S_MODE 157

3.G_X2_S_MODE 381

4.G_X3_S_MODE 456

5.G_X4_S_MODE 500

6.G_X5_S_MODE 531

7.G_X6_S_MODE 556

8.G_X7_S_MODE 576

9.G_X8_S_MODE 594

10.G_X9_S_MODE 60911.G_X10_S_MODE 623

12.G_X11_S_MODE 637

13.G_X12_S_MODE 651

14.G_X13_S_MODE 664

15.G_X14_S_MODE 678

16.G_X15_S_MODE 693

6) Gamma B: gamma B hand operation adjustment.

1.B_X0_S_MODE 120

2.B_X1_S_MODE 222

3.B_X2_S_MODE 406

4.B_X3_S_MODE 470

5.B_X4_S_MODE 509

6.B_X5_S_MODE 5377.B_X6_S_MODE 562

8.B_X7_S_MODE 581

9.B_X8_S_MODE 599

10.B_X9_S_MODE 616

11.B_X10_S_MODE 631

12.B_X11_S_MODE 648

13.B_X12_S_MODE 665

14.B_X13_S_MODE 684

15.B_X14_S_MODE 70316.B_X15_S_MODE 753

7) POSITION CONTROL: H/V SIZE ADJUSTMENT. All

assembly adjustment.

INPUT SIGNAL ADJUSTMENT

SUB CONTRAST ADJUSTMENT

REQUIRED TEST EQUIPMENT1) Oscilloscope(1CH): 1EA

- Frequency Band: 20MHz and over/-Input

Impedence: 1µΗ and over

- Input Capacitance: 30pF and below/-Max InputVoltage: 50V

2) A remote control for adjustment

PREPARATION FOR ADJUSTMENT

- Connect a power source to the TV Set and turnthe unit on.

- Receive the main/sub signal in split screen.

SUB CONTRAST ADJUSTMENT OF MAIN SCREEN

1) Connect an Oscilloscope probe to P300B #32

“Yo_m” of main PCB.

2) Select 0 then select 2.1270(M) S_CONT.

3) Adjust the signal peak value to 1.38 - 1.40v.

SUB CONTRAST ADJUSTMENT OF PIP SCREEN

1) Connect an Oscilloscope probe with P300B #26“Yo_s” of main PCB.

2) Select number 0 and select 2.1270(S) S_CONT.


SUB COLOR ADJUSTMENT

REQUIRED TEST EQUIPMENT

1) Oscilloscope(1CH): 1EA- Frequency Band: 20MHz and over/-Input

Impedence: 1µΗ and over

- Input Capacitance: 30 pF and below/-Max InputVoltage: 50V

2) A remote control for adjustment


1) Connect a power source with TV Set and turn TV

Set on.2) Receive the main/sub signal of company through

13CH by split screen.

SUB COLOR ADJUSTMENT OF MAIN SCREEN

1) Connect an Oscilloscope probe with P300B #30

“Uo m” of main PCB


27/88

SERVICE ADJUSTMENTS

SUB COLOR ADJUSTMENT OF PIP SCREEN

1) Connect an Oscilloscope probe with P300B #24

“Uo_s” of main PCB.2) After entering the Adjustment mode, Select ADJ

Number 0 and then select 4.1270(S) S_COLOR.


AUTO CLAMP ADJUSTMENT


A remote control for adjustment


1) Connect a power source to the TV Set and turnon.

2) Do a heat run for 5 min before adjustment.

3) Receive the main/sub signal of company through13CH by split screen.

AUTO CLAMP ADJUSTMENT

1) Enter the adjustment mode by pressing the ADJkey on the remote control after 10 sec of receiv-

ing the signals.

2) After the adjustment OSD appears, press the EYEkey on the remote control.

SCREEN POSITION ADJUSTMENT


A remote control for adjustment


1) Connect a power source to the TV Set and turnon.

2) Do a heat run for 5 min before adjustment.

3) Receive the main/sub signal in split screen.

HORIZONTAL POSITION ADJUSTMENT

1) Access the Service Menu by pressing, MENU, 9, 8,7, 6, then ENTER on the remote control to enter

the adjustment mode.

2) Select POSITION CONTROL on the adjustment menuand then select the H POSITION in the SUB Menu

3) Adjust data using the left/right key on the re-mote control in order to get left/right symmetryscreen.

ADJUSTMENT FOR VERTICAL POSITION

1) Press INSTART key on the remote control to enter

the adjustment mode.

2) Select the POSITION CONTROL on the adjustmentmenu and then select the V Position in the Sub

menu.

3) Change the data to symmetrized upper and downof the screen (refer to Fig. 2) and then press the

INSTART button on Remote Control to get out of adjustment mode.

US13CH

(Fig. 2) Adjustment for Horizontal/Vertical Position on Screen


28/88

SERVICE ADJUSTMENTS

MECHANICAL ADJUSTMENTS

CORRECTION OF SCREEN TILT & KEYSTONE

Tilt (see the left view below) describes a condition in which the image on the screen appears to be turned eitherclockwise or counterclockwise around the center of the screen. This occurs if the engine is tilted to the left or rightin relation to the screen.

Keystone describes a condition in which the picture on the screen has a wedge shape (see the right view below). A topto bottom keystone appears if the engine is tilted to the front or back in relation to the screen so that the image

deviates from the horizontal centerline of the screen. A side to side keystone appears if the engine is rotated eitherleft or right so that the image deviates from the vertical centerline

MECHANISM FOR ADJUSTMENT

The engine is supported at three points, two of which are adjustable (see locations below). By loosening the locking

knobs and turning the adjustment knobs the engine can be tilted front to back and side to side. The adjustment screwholes in the engine base are oversized so that, with both locking knobs loosened, the engine can be rotated left or

right.

Rota

-tion

Fixing Boss

Locking Knob

engine

engine base

engine base For calculation : When

projection lens 0.2c leans,

Keystone occurs 5mm.

The axis of rotation

Side angle


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SERVICE ADJUSTMENTS

REPLACING THE LAMP

WHEN TO REPLACE THE LAMP

¯ The projector image gets darker or starts to dete-riorate.

¯ The lamp indicator is red (red, flashing alternately).

¯ The message “LAMP REPLACE” appears on the screen

when turning the projector on.

REPLACING THE LAMP

1. Turn the projector off and unplug the power cable.

(Let the lamp cool for more than 1 hour.)

2. Remove the four retaing screws on the lamp coverand remove the lamp cover.

3. Remove the two retaing screw on lamp case (referto fig.2).

4. Lift the fixed wire handle of the lamp. (refer tofig.3)

5. Pull out the handle slowly and remove the lamp

case.

6. Insert the new lamp gently into the correct posi-

tion. Make sure it is inserted correctly.

7. Tighten the screw you removed in step 3.

8. Replace the lamp cover and tighten the cover

screws. (Make sure the lamp cover is securely fas-tened. If lamp cover is open, the lamp indicator

flashes green and the projector will not turn on.)

RESETTING THE LAMP TIME

After pressing the “?” key on the remote control in

Stand-By mode, press the “9876” and press the “OK”button. The three LEDs in the front will flash for amoment.

LAMP LIFE TIME CONFIRMATION

Using the customer’s remote control, press and hold

the menu button. When the OSD menu disappears, pressnumbers 9, 8, 7, 6 and press the OK button to enter

the ADJ mode. The display will show “Lamp Life TimeXX Hrs”.

< Fig. 1>

< Fig. 2>

SERVICE ADJUSTMENTS


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SERVICE ADJUSTMENTS

DISASSEMBLY INSTRUCTIONSRefer to the exploded view when using the following

instructions.

1. Remove part 307 by prying one end out slightly.

Grip and pull forward.

2. Carefully loosen one end of part 306. Pull this

piece forward carefully; do not bend this pieceexcessively. Note: the double-sided tape across thetop must remain intact.

3. Remove the lower back, part 420.

4. Remove the screws from the outer edges of part410.

5. Remove the 9 screws from the lower portion of part 300.

6. Remove the front screen ass’y carefully. Note: un-plug the speaker wires and the two cables to the

front keyboard ass’y.

7. Unplug the cable from location 630.

8. Remove the two screws from the lower center of location 410.

9. Move part 410 slightly forward then up.

10. Remove the metal support bracket from the centerof part location 303.

11. Remove the screws along the sides and across thetop of part 303.

12. Lift up and back slightly, 303 should be removedeasily.

CIRCUIT DESCRIPTIONS


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CIRCUIT DESCRIPTIONSPOWER BLOCK

This circuit uses the FLY BACK CONVERTER for insulation.It is composed of HYBRID IC STR F6668B (which includesa POWER MOSFET) for switching power and STR G6153 as

the stand-by circuit. It is operated by an ERROR AMP(IC802, SE105) which transfers a signal from thetransformer secondary back to the primary.

BLOCK DIAGRAM (STR F6668B)

# Symbol Name Function

1 O.C.P

/F.B

Over-current

/Feed-Back

Terminal

Input signal of detecting over-

current & to input signal for

controlling cons tant voltage.

2 S Source

Terminal

MOSFET source

3 D Drain

Terminal

MOSFET drain

4 Vin Voltage Input

Terminal

Input control circuit power

5 GND Ground

Terminal

Ground

Internal Protect circuit against over-voltage

Internal Protect circuit against overheat

STR F6668B Pin Des criptions

Name

O.V.P.

T.S.D.

Function

FUNCTION & DESCRIPTION

VIN TERMINAL (PIN 4), START CIRCUIT

Because the startup voltage begins to decay beforethe transformer can reach its set value, operation stop

voltage is set at 11V (Max). This allows the control IC

to keep operating until the transformer voltage canmaintain it.

OCP / FB TERMINAL (PIN 1)

The Oscillator and Constant voltage control circuit uses

the charge and discharge of internal condensor C1 andselects the PRC (Pulse Ratio Control) which fixes the

off time of the MOSFET and varies the on time.

The Over Current Protection (OCP) circuit detects thepeak value of MOSFET drain current on every pulse.

This is done by connecting R821 with the MOSFETsource terminal (Pin 2) and GND terminal (Pin 5) and

by inputting regulated voltage to the OCP/FB terminal.The threshold voltage (Vth, 1) of the OCP terminal isabout 0.73V compared with GND. External components

R822 and R821 are a filter circuit to protect against asurge current generated in MOSFET on.

In light load, if the output voltage decreases, thetransformer voltage in the primary also decreases

proportionately. When the Vin terminal voltage in theprimary drops lower than the operation stop voltage,

the OCP circuit stops operating.

In this situation, the circuit current decreases so that

the Vin terminal voltage increases in proportion tothe charge current by start resistors R826 and R827

and intermittent operation occurs.

LATCH CIRCUIT

The latch circuit is to prevent power circuit operation

by keeping the output of the oscillator low in twocircuits (OVP & TSD) which protect against Over-voltage

and overheating.

This circuit starts to function when OVP and TSD

operate for more than 8 seconds. In this case, delaytime is set by a timer circuit in the control IC.

When the Latch circuit operates, the constant voltagepower (Reg) circuit in the control IC is also operating

and the circuit current is high. The Vin terminal voltagedecreases rapidly. If the Vin terminal voltage becomes

lower than the operation stop voltage (10V typ), circuitcurrent drops below 400µA and the Vin terminal voltage



32/88


restarted after cutting AC input.

OVERHEAT PROTECTION

This circuit activates the latch circuit when the frametemperature of the Hybrid IC rises above 140°C.

The actual temperature is detected by a control circuitelement. This is to protect the MOSFET from overheating.

OVER-VOLTAGE PROTECTION

This circuit activates the latch circuit when the Vinterminal voltage exceeds 22.5V (typ). This is used to

protect the Vin terminal in the control circuit.

The Vin terminal is supplied by a secondary of the

transformer so it is proportional to the output voltageof the transformer. Thus it is able to detect and protect

the circuit against an over-voltage condition.

OPERATION STOP CIRCUIT (UVLO)

This begins operating if voltage is supplied to the lowsubsidiary current terminal (Vcc), Pin 5. If the suppliedvoltage in Vcc reaches 17.5V typ., current is supplied

to circuits within the IC and then the operation stop

circuit (UVLO) begins operation control and highimpedence is sustained until the supplied voltagereaches the same voltage. At this time the supplied

current is circuit current (Icc), in not operating, andis 70µa (Max).

If the operation stop circuit begins operation control,circuit current (Icc) is in operation and about 15mA

flows in the same terminal. In controlling operation, if the supplied voltage in this terminal goes belowoperation stop current voltage (Vcc), 11.5V (typ), the

IC stops functioning. Like this, this terminal functionsto detect supplied voltage and to control operation

# Symbol Name Function

1 D Drain

terminal

MOSFET drain

2 OCP Over-current

terminal

Input signal of detecting

over-current in primary

part

3 GND Ground

terminal

Ground

4 FB Feed-Back Input signal of controlling

STR G6153T Pin Descriptions

start in low voltage input.

INTERNAL OSCILLATOR (OSC)

The OSC uses a capacitor (Ct) to determine oscillationfrequency. When the IC begins operating, Ct is chargedinternally by constant current I1. This causes both SW1

and SW2 to become open. When the electric potential of the charge reaches about 4V, the comparator

reverses, and SW1 and SW2 are on (closed)simultaneously.

If I1 is lower than I2, SW1 becomes on, Ct dischargesand Vt decreases. Maximum Duty cycle of the oscillator

is set to 80% (typ) and the frequency is set to 100KHz(typ). The globular shaped wave output is used as a

timing clock in the internal circuit and the triangleshaped wave output is used as a standard signal fortransforming pulse width.

CONTROL MODE (PWM LATCH / FEED BACK)

The control mode of the IC uses MIX Mode which is

switched to the voltage control mode in light loadand and current control mode in heavy load, linearly,

according to load. The MIX control mode operates PWMcontrol, comparing a standard triangle shaped wavewith the current waveform imposed on DC FB voltage.

Input voltage difference of PWM Comparator inwaveform cross becomes larger. As a result, a stable

PWM signal is gained. In MIX control mode, enoughnoise margin can be obtained with changing the

voltage PWM of standard triangle shaped wave.

Also,even in continuation inductor mode in which OnDuty is over 50%, Sub-harmonic phenomenon issuppressed and every essential part of internal oscillatorbecomes optimized.

CIRCUIT PROTECTION

1) PROTECT CIRCUIT AGAINST OVERLOAD (OLP)

This IC has a protection circuit against over-current

which checks over-current on every pulse. In over-current, the FB system cuts the Photo Coupler for FB

off because the output voltage doesn’t reach the setvoltage. If an Over-current signal and an FB Current

Mirror signal are detected, an internal timer starts655ms later.

When the Count Out signal is output, the main switchi t t ff d th l t h i it i ti t d



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If the supplied voltage in the subsidiary power terminal (Vcc) of this IC exceedes 22.2V (typ), the oscillation

operation is stopped by the over-voltage protect

circuit, the main switch is set to off and latch operationbegins.

* power voltage Vcc (ovp) for OVP operation = 22.2V(typ)

3) PROTECT CIRCUIT AGAINST OVERHEAT (TSD)

When the internal temperature of the chip reaches

150°C (typ), oscillation operation stops, the mainswitch is set to off and latch operation begins.

4) PROTECT CIRCUIT AGAINST OVER-CURRENT (OCP)The main switch on the drain current is monitored. If drain current over standard value is detected, the mainswitch is switched to off immediately. This drain current

detection is performed whenever the main switch ison. The standard voltage in the OCP terminal is 0.75V

(typ).

5) SOFT START FUNCTION (SS)

This IC has a Soft Start function which is timed, so anexternal condensor for Soft Start is unnecessary. SoftStart is performed by increasing standard voltage for

detecting over-current in a series of four steps and bycontrolling current in the main switch. The time andvoltage level of each step is set internally.

Symbol MIN TYP MAXVss(1) 0.16 - - 0.35

Vss(2) 0.35 - - 0.54

Vss(3) 0.51 - - 0.68

Vss(4) 0.63 - - 0.75



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SIGNAL BLOCK

AUDIO/VIDEO SWITCH (CXA2069Q)

The CXA2069Q is a 7-input, 3-output audio/videoswitch featuring I2C bus compatibility for TVs. This IChas input pins that are compatible with S2 protocol.

FEATURES

• 4 inputs that are compatible with S2 protocol

• Serial control with I2C bus

• 7 inputs, 3 outputs

• The desired inputs can be selected independently

for each of the 3 outputs• Wide band video amplifier (20 MHz, –3 dB)

• Y/C MIX circuit

• Slave address can be changed (90H/92H)

• Audio muting from external pin

• High impedance maintained by I2C bus lines (SDA,

SCL) even when power is OFF • Wide audio dynamic range (3 Vrms typ.)

DESCRIPTION OF OPERATION

The CXA2069Q is a TV I2C bus-compatible AV switchIC. The video system and the stereo audio system have

7 inputs and 3 outputs each. Four of the seven videosystem inputs support S2 and S protocols.

The desired inputs can be independently assigned to

each output (in the audio system, the left and rightchannels are processed as one unit) by I2C bus control.However, the same input is assigned to both the videoand audio system output 3.

VOUT1

YIN1

YOUT1

TRAP1

COUT1

CIN1

V/YOUT2

TRAP2

COUT2

VOUT3

YOUT3

LTVLV1

LV2

LV3

LV4

LV5

Lv6

RTV

RV1

RV2

RV3

RV4

RV5

RV6

Y1

Y2

Y3

Y4

C1

C2

C3

C4

622

9

16

23

29

59

64

4

11

18

25

31

61

03

10

17

24

63

01

08

15

22

30

60

TV

V1

V2

V3

V4

V5

V6

05

12

19

26

COUTS

VGND

BIAS

Vcc

AGND

LOUT1

ROUT1

LOUT2

ROUT2

LOUT3

ROUT3

DC OUT

SCL

SDA

ADR

S-1

S-2

S-3

S-4

S2-1

S2-2

S2-3

S2-4

MUTE

57

50

42

35

52

54

36

33

34

32

07

14

21

28

06

13

20

27

48

37

43

45

38

40

49

56

55

58

51

44

46

47

41

39

The audio system is attenuated by 6dB at

input, and a total gain of 0dB (LOUT1

and ROUT1 can be changed to -6dB

6dB

6dB

6dB

6dB

6dB

6dB

6dB

6dB

BIAS

6dB

0dB

6dB

0dB

6dB

6dB

6dB

6dB

6dB

Logic

53

BLOCK DIAGRAM

VIDEO AND CHROMA SYNC PROCESSOR

DESCRIPTION

TA1270AF is a PAL/NTSC color TV signal processor ICsuitable for PIP/POP/PAP. The IC integrates video and

chroma sync processor circuits It comes in a 48 pin

FEATURES

1) Video block

• Chroma trap

• Y delay line



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3) Sync processor block

• High-performance sync separator circuit

• Adjustment-free horizontal and vertical oscillator circuit using count down method

• 50/60Hz automatic identifier circuit

4) Switch block

• High-speed switcher circuit

• YUV or RGB input• Built-in RGB matrix circuit

• YUV or RGB output

BLOCK DIAGRAM



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[MAT_OUT = 3: GBR / YCbCr]

Y = 0.3R + 0.59G + 0.11B

Cb = 0.564 (–0.3R – 0.59G + 0.89B)

Cr = 0.713 (0.7R – 0.59G – 0.11B)

In addition, the IN1 and IN2 systems support D3 input

pins. This is selected by SELSTB_1 and SELSTB_2 (I2Cbus). The control line input voltage of each L1, L2, L3

and SW pin is returned to the status register by a ternaryor binary value.

Next, the HV sync signal processing block is describedbelow. Existence distinction is first performed to

determine whether the selected sync signals are inputfrom H and V, and these results are sent as the existencestatus to the EV and EH status registers. On the other

hand, polarity-matched H and V that passed throughthe polarity identification circuit are input to the

priority ranking circuit.

When inputting composite sync (CS), input to the H

input pin of each input system. After passing throughthe polarity identification circuit, V sync separation

is performed and the signal is input to the priorityranking circuit.

When inputting Sync on Y or Sync on Green, input tothe number 3 pin of each input system. After passing

through HYSW, the signal is amplified by 6dB andoutput to YG_OUT (Pin 15). This output is returned to

YG_IN (Pin 16) via a sync tip clamping capacitor, syncseparation is performed, and the signal is input to thepriority ranking circuit. This route can also be used

during CS signal input by setting HYSW (I2C bus) to 1.

In addition, sync identification is performed to

determine whether the input signal from YG_IN (Pin16) is Tri-level sync, and these results are returned to

the 3STATE status register. In this manner, therespective signals are input to the priority ranking

circuit, and the output sync signal is determined bythe EV and EH status. The priority ranking is as follows.

The TV set should be designed so that one of thefollowing three points are met.

1. When both H and V exist at the H and V pins, thesesignals are selected with the highest priority. $ EH =1, EV = 1.

2. When CS exists at the H pin and there is no input at

VIDEO/SYNC SELECTOR

DESCRIPTION

The CXA2151Q is a bipolar IC developed for multi scan

TVs, and incorporates a four system video switch(including HV sync signal processing) and a YCbCroutput matrix circuit.

FEATURES

• Supports the I2C bus

• Supports multi scan

• Four system video switch (of which two systems

support D3 pins)

• Matrix circuit

• Each YCbCr output can be switched between 0dB,

6dB (gain adjustable) and mute.

• Sync signal automatic identification circuit (with

fixed mode)

• Sync separation circuit (supports HD)

• HD Tri-level sync identification circuit

• Sync signal frequency counter (both H and V)

• Dummy sync output

OPERATION

1) Programmable Matrix Selector

The CXA2151Q has a built-in four system video switch

which can be selected by INPUT_SEL (I2C bus). YCbCr,HD YPbPr, GBR and the respective HV sync signals canbe input to each system. Horizontal scanning line

frequencies from 15 to 45kHz can be input as the range

which supports multi scan.The selected signals are output from SEL_OUT (Pins22, 23, 25, 26 and 27), respectively. The output

amplitude at this time can be selected by GAIN_SEL(I2Cbus), but when GAIN_SEL is set to 0, the gain can

be adjusted by YGAIN, CBGAIN and CRGAIN (I2C bus).HV sync signal input supports both positive andnegative polarity. Select MAT_OUT (I2C bus) as follows

according to the input.

• Select THROUGH mode during YCbCr input.

• When YPbPr or GBR are input, select the mode that

converts these signals to YCbCr.

The matrix conversion formulas are shown below.

[MAT OUT = 1: YHDPbPr / YCbCr]: CCIR protocol



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2) SYNC Counter

The H and V sync signals selected by the HV sync signal

processing block described previously are sent to the

SYNC counter block next. The SYNC counter block countsthe frequency of the input H and V sync signals. TheSYNC counter block counts the H sync signal inputduring a certain period (.5ms) based on the clock

obtained by the internal VCO from the 4MHz crystal oscillator or ceramic oscillator connected to EXTCLK/

XTAL (Pin 20), and returns these results to the H-NUMBERH/L status registers in 10 bits.

When the H sync signal is not input, H-NUMBER-H/L is

0 or 1. For the V sync signal, the number of referenceclock (31.25kHz) pulses during 1 V cycle is counted,and these results are returned to the V-NUMBER-H/L

status registers in 10 bits.

When the V sync signal is not input, the count that

matches the frequency selected by VFREQ (I2C bus) isreturned to VNUMBER-H/L. The SYNC count values and

conversion formulas for each H and V sync signal areshown below.

Note that a 4MHz external clock can be input to EXTCLK/ XTAL (Pin 20) via a capacitor by setting CLK_SEL (I2Cbus).

A dummy sync can be output by setting SELDUM (I2Cbus). Select the dummy sync frequency with HFREQ andVFREQ( I2C bus). However, note that when the dummysync is selected, the SYNC counter does not operate

even if H and V sync signals are input.

H sync signal fH [kHz] Count value [HEX]

15.73 4F

31.5 9D

33.75 A8

45 E1

V sync signal fV [kHz] Count value [HEX]

60 20850 271

Count value ([DEC] / [HEX]) = fH # 5ms

Count value ([DEC] / [HEX]) = 1/(fV # 32ns)

SYNC values and formulas

H_IN

Sync on Y/Sync on GREEN

Video Interval

3) Notes on Operation

• Processing for unused pins. OPEN: Pins 1 to 3, 7, 8,

33 to 35, 38, 39, 41 to 43, 46 and 47 Connected toGND via a capacitor and resistor: Pins 4, 5, 10, 11, 36,

37, 44 and 45 (See each H and V input and the

Application Circuit). This is to prevent the SYNC counterfrom misoperation.

• Input the H and V inputs at sufficiently lowimpedance.

• Internal clamp timing. The internally generated clamp

pulse follows the timings T1 and T2 shown below. InputH_IN and Sync on Y/Sync on Green so that the clamppulse does not overlap the video interval to prevent

clamping error.

CIRC

Zenith 094a Chassis d60wlcd Sm

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