AOC L22W961 User manual

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Service
Service
Service
Horizontal Frequency
31.5~60KHz
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSONATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
6.1 Main Board…………..……………...…….…….......29
6.2 Power Board……………..……….…….……….......31
6.3 Key Board………………………..……..……….......32
6.4 IR Board………………………….……..……….......33
7. Adjustment……..………………………….................34
8. Block Diagram.…….................................................37
9. Schematic……………...…………....………………...38
9.1 Main Board…………………………………...….......38
9.2 Power Board…………….…………...………….......51
9.3 Key Board……………….……….…………….........53
9.4 IR Board……...………….……….…………….........54
10. Exploded View………………………………….…...55
11. BOM List……………….………………….………….56
Table Of Contents.......……...................................…........1
Important Safety Notice.......................................……......2
Revision List…………………………………………………3
1. General Specification..............................……...…........4
2. Operating Instructions………………...…….……….......5
2.1 The Use of Remote Control…….…..……….…….......5
2.2 To Use the Menu….....…………………….……….......6
2.3 How to Connect……..……………….…….……….....11
2.4 Front Panel Control Knobs…….………….……….....17
3. Input/Output Specification…………....................…....18
4. Mechanical Instructions…………………….................20
5. Repair Flow Chart ……………………….…….…….....24
6. PCB Layout ………………..…………………....….......29

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Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service
procedures recommended by AOC and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed for the purpose. The
special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in
which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual,AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics might create
shock, fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission from AOC.
AOC assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiations when openAVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF
THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may
damage the panel.)

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Revision List
Version Release Date Revision Instructions TPV Model
A00 Jun.-22-2009 Initial Release E22R2ZNK4WAENN

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1. General Specification

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2. Operating Instructions
2.1 The Use of Remote Control

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2.2 To Use the Menu
1. Press the MENU/EXIT button to display or close the main menu.
2. Use the Navigation Ring to move around to select, adjust or confirm an item in the OSD (On Screen Display)
menu.
Press the MENU/EXIT button to enter the main OSD. Adjust the items including Video menu, Audio menu,
Feature menu, Channel menu and VGA menu. However, some function items in the menus may only be enabled
in the particular source modes.
Channel Menu
The Channel menu in TV mode shows as below.
1. Tuning Band: Select TV source signal from the Air (antenna) or Cable (CATV).
2. Channel Strength: Show the intensity of the received DTV signal.
3. Auto CH Search: Automatically scan all NTSC / ATSC TV channels and then store in the channel table. In
channel scan process, the OSD can display the number of channels which had been found.
4. Add on CH search: Add channels which are new found.
5. Channels List: Show the channel List. User can edit (add/delete) the channel numbers.
6. Channel Labels: Show the NTSC / ATSC TV channel label menu for user modifying channel labels specifically.
7. FAV Channel Setting: Show the Favorite Channel List. User can edit (add/delete) the favorite channels.
Video Menu
TheVideomenuinmostsourcemodesshowsasbelow.Itprovidesseveralvideo adjustment items foruserfinetuning
thevideo display. OnlyinVGAsource mode,theVideomenusimplyprovidesPicture Mode, Color Temp, Backlight,
Aspect Ratio and Preset items.

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1. Picture Mode: Adjust the best picture appearance from selecting the preset value of Vivid, Standard, PWR(Energy
savings), Theater, Sport, or Custom.
2. Brightness: Video brightness adjustment, the tuning range is 0 ~ 100.
3. Contrast: Video contrast adjustment, the tuning range is 0 ~ 100.
4. Sharpness: Video sharpness adjustment, the tuning range is 0 ~ 100.
5. Color: Video color chroma adjustment, the tuning range is 0 ~ 100.
6. Tint: Video tint adjustment, the tuning range is R50 ~ G50.
7. Color Temp: Three color temperature modes. (Normal / Warm / Cool)
8. Backlight: Backlight strength adjustment, the tuning range is 0 ~ 30.
9. Aspect Ratio: Choose the display aspect: Auto, Normal, Zoom, Wide, or Cinema mode. (Auto: TV only)
10. Preset: Restore the default video settings.
Audio Menu
The Audio menu in TV mode shows as below. It provides audio adjustment for user to modify the audiosetting. Audio
language setting is only available with ATSC TV source, the option is disable under other source modes.
1. Sound Mode: Choose the sound mode: Standard, Movie, News, or Custom.
2. Bass: Bass tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled)
3. Treble: Treble tone adjustment, the tuning range is 0 ~ 63. (The default state is enabled)
4. Balance: Audio balance adjustment, the tuning range is L50 ~ R50.
5. Audio Source: Select the audio source from Mono, Stereo, or SAP. (This function works in ATV only).
6. Audio Language: Change the audio language setting on ATSC TV programs. The number of the supported
audio languages depends on the ATSC TV programs. (English / Français / Español)
7. SPDIF: Digital audio output format. Select from RAW and PCM.
8. Speaker: Choose to turn on / off the TV internal speaker. The digital audio output signals and earphone output
signals will not be turned off even though the TV speaker is off. The default setting is On.
9. AVL: Choose On or off to adjust volume to be consistent across programs and channels automatically.
10. Preset: Restore the default audio settings.
Feature Menu
The Feature menu in TV mode shows as below. This menu gives users the most flexibilities to satisfy their generally
demands.Accordingtothevariousrequirementsindifferentsourcemodes,certainfeaturesshouldbehidden(disable)
on the menu. The details footnotes will be described clearly below.

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1. Menu Language: Select the menu display language. (English / Français / Español)
2. Time: Set current time. The sub-menu includes Time Mode, Time Zone and Daylight Savings.
[Time Mode] – Choose from Auto or Manual.
[Time Zone] – Set current time zone.
[Daylight Savings] – Set to On or Off.
3. Advanced Video: Provide the Noise Reduction, Adaptive Contrast, and DCR for enhancing video quality.
[Noise Reduction] – Gives four NR effect degrees, such as: Low, Mid, High and Off. The default setting is Mid.
[Adaptive Contrast] – Choose On or off to adjust the gamma after analyzing the input signal automatically.
[DCR] – Dynamic Contrast Ratio (DCR) auto adjusts the backlight of the screen.
[Preset] – Restore the default advanced video option settings.
4. Transparency: Adjust the transparency of the on-screen menu from range 1 to 10.
5. Password Setting: Change the 4-numeral parental control password. Three steps are required for changing the
password: Enter Old Password -> Enter New Password -> Confirm New Password. Note: This item is only available
in TV, Composite and S-Video source modes. The default password is ό0 0 0 0ύ.

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6. Parental Control: provide the parental Control (V-chip) function setting. Before entering the Parental Control
sub-menu, user has to key in the password first. Enter the Parental Locks item, then the user can modify the
restricted table about MPAA or TV Rating respectively. While exiting the sub-menu, the parental control function is
working. The inhibitive channels or source signals can be un-lock through pressing the V-CHIP key on the remote
control and then key in the correct password. Note: This feature is only available in TV, Composite and S-Video
source modes. (The default password is: 0 0 0 0.)
[ButtonLock]–SelectOnorOfftolockorunlockthecontrolbuttonsonthesidepaneloftheTV.Whenthisfunction
enables, the control buttons on your TV will be locked and TV will be controlled by remote control only.
[Block Unrated TV] – When Block Unrated TV is set to on, your TV will block unrated program.
[USA Parental Locks] – Set the parental control level by MPAA or TV Rating.
[Canadian Parental Locks] – Set the parental control level by English Rating or French Rating.
[Open V-Chip] – Open V-Chip is an advanced V-Chip rating system for digital channels that are received.
The rating table will be updated by downloading the RRT5 data for blocking.

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7. Closed Captions: Select a closed caption options. (Off /On / With Mute)
8. Analog Captions: Select an analog caption options. (CC 1-4 / TEXT 1-4)
9. Digital Captions: Select a digital caption options. (SERVICE 1-6)
10. Digital Captions Setup: Provide numerous options for setting the digital closed caption style in the sub-menu.
[Style] – Set to Automatic or Custom mode. If Custom mode is selected, user can modify the detail styles
described below. The setting result will be shown immediately on the bottom of the sub-menu OSD. Note: This
feature is only available in Digital TV (ATSC) mode.
[Size] – Digital closed caption font size, which can be set as Automatic, Small, Normal or Large.
[Font] – Digital closed caption font style, which can be chosen as Automatic, Default or Font 1 ~ 7.
[Text Color] – Automatic / White / Red / Green / Blue / Yellow / Magenta / Cyan / Black
[Text Opacity] – Automatic / Solid / Flashing / Transparent / Translucent
[Background Color] – Automatic / Black / White/ Red / Green / Blue/ Yellow / Magenta / Cyan
[Background Opacity] – Automatic / Solid / Flashing / Transparent / Translucent
[Edge Effect] – Automatic / None / Raised / Depressed / Uniform / Left Shadow / Right Shadow
[Edge Color] – Automatic / Red / Green / Blue / Yellow / Magenta / Cyan / Black / White.
11. Input Labels: User can edit the input labels.
12. Component Setting: This option only shows and is available in component mode, which provides fine tuning
component display.
[Phase] – Adjust Picture Phase to reduce Horizontal-Line noise. The tuning range is from 0 to 100.
[Preset] – Restore the default component setting values.
13. Reset to Default: Restore all the default settings.
VGA Menu
This option only shows and is available in VGA mode, which provides several items for the VGA display fine tuning.
1. H-Position: Adjust the horizontal position of the picture. (0-100)
2. V-Position: Adjust the vertical position of the picture. (0-100)
3. Clock: Adjust picture clock to reduce Vertical-Line noise. (0-100)
4. Phase: Adjust Picture Phase to reduce Horizontal-Line noise. (0-100)
5. Auto Adjust: Adjust the settings automatically.
6. Preset: Restore the default VGA setting values.

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2.3 How to Connect
Connecting Equipment
Coaxial (RF)
Using Your Antenna or Digital Cable for DTV
1. Turn off the the HDTV.
2. Connect the coaxial (RF) connector from your antenna or digital cable (out-of-the-wall, not from the Cable Box) to
the ANTENNA/CABLE DIGITAL/ANALOG connector.
3. Turn on the HDTV.
4. Select TV using the SOURCE button on the remote, side of the HDTV or directly by pressing the TV button on the
Remote Control.
Using Your Antenna or Cable for DTV
1. Turn off the the HDTV.
2. Connect the coaxial (RF) connector from your antenna or cable (out-of-the-wall, not from the Cable Box) to the
ANTENNA/CABLE DIGITAL/ANALOG connector at the rear of the HDTV
3. Turn on the the HDTV.
4. Select TV using the SOURCE button on the remote, side of the HDTV, or pressing the TV button on the Remote
Control.
Using the Antenna or Cable for your VCR
1. Turn off the HDTV and VCR.

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2. Connect the “Output to TV”, “RF Out” or “Antenna Out” connector on the rear of your VCR to the ANTENNA/CABLE
DIGITAL/ANALOG connector at the rear of the HDTV.
3. Turn on the HDTV and VCR.
4. Select TV using the SOURCE button on the remote, side of the HDTV or directly by pressing the TV button on the
Remote Control.
Connecting Your HDTV Set-Top Box
Using HDMI
HDTV Set-Top Boxes that have a HDMI digital interface should be connected to the HDMI input of the LCD HDTV for
optimal results.
Connecting your HDTV Set-Top Box (Best)
1. Turn off the HDTV and HDTV Set-Top Box.
2. Connect a HDMI cable to the HDMI output of your HDTV Set-Top Box and the other end to the HDMI Input at the
rear of the HDTV.
3. Turn on the HDTV and HDTV Set-Top Box.
4.SelectHDMIusingtheSOURCEbuttonontheremote,sideoftheHDTV,ordirectlybypressingtheHDMI/PCbutton
on the Remote Control.
For HDTV Set-Top Boxes with DVI
1. Turn off the HDTV and HDTV Set-Top Box.
2. Using a HDMI-DVI cable, connect the DVI end to your HDTV Set-Top Box and the HDMI end to the HDMI Input at
the rear of the HDTV.
3. Turn on the HDTV and HDTV Set-Top Box.
4.SelectHDMIusingtheSOURCEbuttonontheremote,sideoftheHDTV,ordirectlybypressingthe HDMI/PCbutton
on the Remote Control.
Using Component Video
Connecting your HDTV Set-Top Box (Better):

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1. Turn off the HDTV and HDTV Set-Top Box.
2.Connect thePr(red color)connectoron yourHDTVSet-Top Boxtothe correspondingPr (redcolor)connectorinthe
Component group.
3. Connect the Pb (blue color) connector on your HDTV Set-Top Box to the corresponding Pb (blue color) connector
in the Component group.
4. Connect the Y (green color) connector on your HDTV Set-Top Box to the corresponding Y (green color) connector
in the Component group.
5. Using an audio cable(red and white connectors), connect the cable to the audio output connectors associated with
the Component output on yourHDTV Set-Top Box and connect the other end to the audio connectors associated with
the Component.
6. Turn on the HDTV and HDTV Set-Top Box.
7.SelectComponentusingtheSOURCEbuttonontheremote,sideoftheHDTVordirectlybypressingtheCOMPbutton
on the Remote Control.
Connecting Your Basic Set-Top Box
Using Composite Video
1. Turn off the HDTV and Set-Top Box.
2. Using an AV Cable, connect the Video (yellow color) connector on your Set-Top Box to the corresponding Video
(yellow color) connector in the AV group at the rear of the HDTV.
3.Usingtheredandwhiteconnectors,connectthecabletotheaudiooutputconnectorsassociatedwiththeVideooutput
on your Set-Top Box and connect the other end to the audio connectors associated with the AV input at the rear of the
HDTV.
4. Turn on the HDTV and Set-Top Box.
5. Select AV using the SOURCE button on the remote, side of the HDTV or directly by pressing the VIDEO button on
the Remote Control.
Using Coax (RF)
1. Turn off the HDTV and Set-Top Box.
2.UsingaCoax(RF)cable,connectoneendtotheTV OUT(RF)onyourSet TopBoxandtheotherendtotheTVinput
at the rear of the HDTV.
3. Turn on the HDTV and Set-Top Box.

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4. Select TV using the SOURCE button on the remote, side of the HDTV or directly by pressing the TV button on the
Remote Control.
Connecting Your DVD Player
Using HDMI
DVD players that have a digital interface such as HDMI (High Definition Multimedia Interface) should be connected to
the HDMI input of the LCD HDTV for optimal results.
Connecting your DVD Player (Best)
1. Turn off the HDTV and DVD player.
2. Connect a HDMI cable to the HDMI output of your DVD player and the other end to the HDMI Input at the rear of the
HDTV.
3. Turn on the HDTV and DVD player.
4.Select HDMI using the SOURCEbuttonon the remote, sideoftheHDTV or directlybypressingthe HDMI/PC button
on the Remote Control.
For DVD Players with DVI:
1. Turn off the HDTV and DVD player.
2. Using a HDMI-DVI cable, connect the DVI end to your DVD player and the HDMI end to the HDMI Input at the rear
of the HDTV.
3. Turn on the HDTV and your DVD player.
4.SelectHDMIusingtheSOURCEbuttonontheremoteorsideoftheHDTV,ordirectlybypressingtheHDMI/PCbutton
on the Remote.
Using Component Video
Connecting your DVD Player (Better)
1. Turn off the HDTV and DVD player.
2. Connect the Pr (red color) connector on your DVD player to the corresponding Pr (red color) connector in the
Component at the rear of the HDTV.

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3. Connect the Pb (blue color) connector on your DVD player to the corresponding Pb (blue color) connector in the
Component group at the rear of the HDTV.
4. Connect the Y (green color) connector on your DVD player to the corresponding Y (green color) connector in the
Component group at the rear of the HDTV.
5. Using an audio cable(red and white connectors), connect the cable to the audio output connectors associated with
the Component output on your DVD player and connect the other end to the audio connectors associated with the
Component input at the rear of the HDTV.
6. Turn on the HDTV and DVD player.
7.SelectComponentusingtheSOURCEbuttonontheremote,sideoftheHDTVordirectlybypressingtheCOMPbutton
on the Remote Control.
Using S-Video (AV)
Connecting your DVD Player (Good):
1. Turn off the HDTV and DVD player.
2.ConnecttheS-VideojackontherearofyourDVDplayertotheS-VideojackintheAVgrouponthe rearoftheHDTV.
3.Connectanaudiocable(whiteandredconnectors)totheaudiooutputconnectorsassociatedwiththeS-Videooutput
on your DVD player and connect the other end to the audio connectors associated with the AV input on the rear of the
HDTV.
4. Turn on the HDTV and DVD player.
5. Select AV using the SOURCE button on the remote, side of the HDTV, or directly by pressing the VIDEO button on
the Remote Control.
Using Composite (AV) Video
Connecting your DVD Player (Good)
1. Turn off the HDTV and DVD player.
2.ConnecttheVideo(yellowcolor)connectoronyourDVDplayertotheVideo(yellowcolor)connectorintheAVgroup.
3.ConnecttheR(redcolor)andL(whitecolor)audioconnectorsonyourDVDplayertothecorrespondingR(redcolor)
and L (white color) audio input connectors in the AV group.
4. Turn on the HDTV and DVD Player.
5. Select AV using the SOURCE button on the remote, side of the HDTV or directly by pressing the VIDEO button on

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the Remote Control.
Connecting Your VCR or Video Camera
1. Turn off the HDTV and VCR or Video Camera.
2. Connect the S-Video jack on the rear of your VCRor Video Camera to the S-Video jack in the AV group on the rear
of the HDTV.
3.Connectanaudiocable(whiteandredconnectors)cabletotheaudiooutputconnectorsassociatedwiththeS-Video
output on your VCR or Video Camera and connect the otherend to the audio connectors associated with the AV input
on the rear of the HDTV.
4. Turn on the HDTV and VCR or Video Camera.
5. Select AV using the SOURCE button on the remote, side of the HDTV or directly by pressing the VIDEO button on
the Remote Control.
Connecting to a PC
1. Turn off the HDTV and PC.
2. Connect a 15-pin D-Sub RGB (VGA) cable to the RGB output of your PC and the other end to the VGA input at the
rear of the HDTV.
3. Connect the Audio Out on your computer to the AUDIO input at the rear of the HDTV.
4. Turn on the HDTV and PC.
5. Select VGA using the SOURCE button on the remote, side of the HDTV or directly by pressing the HDMI/PC button
on the Remote.

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2.4 Front Panel Control Knobs

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3. Input/Output Specification
3.1 RGB Signal Input
15 - Pin Color Display Signal Cable
Pin No. Description Pin No. Description
1 Red Video 9 No Pin
2 Green Video 10 Sync Ground
3 Blue Video 11 SDA(Remote Control)
4 SCL(Remote Control) 12 Serial Data for DDC
5 Ground 13 H-Sync.
6 Red Video Ground 14 V-Sync.
7 Green Video Ground 15 Serial Clock for DDC
8 Blue Video Ground
3.2 HDMI Digital Connector Pin Assignments
Pin No. Description Pin No. Description
1 TMDS Data2+ 2 TMDS Data2 Shield
3 TMDS Data2- 4 TMDS Data1+
5 TMDS Data1 Shield 6 TMDS Data1-
7 TMDS Data0+ 8 TMDS Data0 Shield
9 TMDS Data0- 10 TMDS Clock+
11 TMDS Clock Shield 12 TMDS Clock-
13 CEC 14 NC
15 SCL 16 SDA
17 DDC/CEC Ground 18 +5V Power
19 Hot Plug Detect

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3.3 AV/S-Video/Component Video Inputs
3.4 Compatible Mode Table
VESA MODES
Horizontal Vertical
Mode Resolution Nominal Frequency
(KHz)
Sync
Polarity
Nominal
Freq.
(Hz)
Sync
Polarity
Nominal
Pixel
Clock
(MHz)
VGA
640x480@60Hz 31.469 N 59.940 N 25.175
640x480@72Hz 37.861 N 72.809 N 31.500
640x480@75Hz 37.5 N 75 N 31.500
720x400@70Hz 31.469 N 70.087 P 28.322
SVGA
800x600@56Hz 35.156 P 56.25 P 36.000
800x600@60Hz 37.879 P 60.317 P 40.000
800x600@72Hz 48.077 P 72.188 P 50.000
800x600@75Hz 46.875 P 75 P 49.5
XGA
1024x768@60Hz 48.363 N 60.004 N 65.000
1024x768@70Hz 56.476 N 70.069 N 75.000
1024x768@75Hz 60.023 P 75.029 P 78.750
WXGA
1280x720@60Hz 45 P 60 P 74.25
1280x768@60Hz 47.396 P 59.995 N 68.25
1360x768@60Hz 47.712 P 60.015 P 85.5
AV (Composite Video Input)
Video1
System NTSC
Amplitude 1.0 V (p-p), negative sync.
Impedance 75 ohm terminated
S-Video (Y / C Input)
S-Video2 System NTSC
Y signal amplitude 1.0Vpp (including sync)
C signal amplitude 0.286Vpp
Impedance 75 ohm terminated
Component (Y, Pb/Cb, Pr/Cr Input)
Video3
System 1080i, 480p, 720p, 480i
Y signal amplitude 1.0Vpp (including sync)
Cr, (R-Y) / Cb, (B-Y)
Signal amplitude ±0.35Vpp, 75 ohm
Impedance 75 ohm terminated

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4. Mechanical Instructions
1. Remove the 3 screws to remove the stand base.
2. Remove the screws to remove the rear cover.