AOC L42H861 User manual

42″LCD TV AOC L42H861
1
Service
Service
Service
Horizontal Frequency
31~60 kHz
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING 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
R FOR TH
UNIT WHEN S
CI
6.2.Power Board……………..………….……….......31
6.3.Key Board………………………..……….......34
6.4.IR Board…………………………..……….......34
7. White-Balance, Luminance Adjustment...................35
8. Block Diagram.……...........................................37
9. Schematic……………...…………..………………...38
9.1 Main Board…………………………………...….......38
9.2.Power Board…………….…………...………….......53
9.3.Key Board……………….……….………….......57
9.4.IR Board………………………………..……….......58
10.Exploded View………………………………….…...59
11.BOM List………..……….…………………………….60
12.Different Parts List…………………………………...84
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…….…………………….……….....10
2.4. Front Panel Control Knobs……………….……….....17
3. Input/Output Specification…………....................…....18
4. Mechanical Instructions…………………….................20
5. Repair Flow Chart ……………………….…….…….....23
6. PCB Layout ………………..……………….....….......28
6.1.Main Board…………..……………...……….......28

42″LCD TV AOC L42H861
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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 open AVOID 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.)

42″LCD TV AOC L42H861
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Revision List
Version
Release Date
Revision Instructions
TPV Model
A00
Jun.-23-2008
Initial Release
E428MZNKW8AENN
A01
Sep.-17-2008
Add new BOM
E428MZNSW8AENN
E428MZNKW8A52N
A02
Dec.-16-2008
Add new BOM
E42RMZNKW8AENN

42″LCD TV AOC L42H861
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1. General Specification
Television System:
NTSC standard
ATSC standard (8-VSB,
Clear-QAM)
HDMI Terminals:
HDMI INPUT: Rear HDMI x2, Side HDMI x1
HDCP compliant
E-EDID compliant
Supported scan rates: 1080P, 1080i, 720p, 480p, 480i
Channel Coverage:
VHF: 2 through 13
UHF: 14 through 69
CableTV: Mildband(A-8
throughA-1, A throughI)
Super band (J through W)
Hyper band (AA through ZZ,
AAA, BBB)
Ultra band (65 through 94, 100
through 125)
VGA Terminals:
VGA INPUT:
Rear VGA (D-SUB 15 Pin) Input x1
E-EDID compliant
Supported scan rates: 640X480 /60Hz/72Hz/75Hz
720X400 /70Hz
800x600 /56Hz /60Hz /72Hz /75Hz
1024X768 /60Hz/70Hz/75Hz
1920X1080 /60Hz
Recommended: 1920X1080 /60Hz
Audio INPUT: Headphone Mini-jack for stereo (3.5Φ)
Power Source:
AC power supply: 100V~240 V,
50/60 Hz
Audio Output:
AUDIO: 500 mV(rms)
Power Consumption
≤250 W
1 W in standby mode (power cord
plugged in and power OFF)
Dimensions:
Include Stand:
1010 mm(W) x 689 mm(H) x 260 mm(L)
Audio Power
10 W + 10 W, Internal Speaker
Weight: 21kg(With Stand)
Video/Audio Terminals:
Rear AV x1:
S-Video/Video/Audio Input
Side AV x1: S-Video/Video/Audio
Input
Wall Mounting:
400x200mm
(Wall mount kit is not included)
S-VIDEO INPUT:
Rear S-Video x 1, Side S-Video x
1
Y : 1 V(p-p), 75 ohm, negative
sync.
C : 0.286 V(p-p) (burst signal), 75
ohm
VIDEO/AUDIO INPUT:
VIDEO: 1 V(p-p), 75 ohm,
negative sync.
AUDIO: 500mV(rms)
Supplied Accessories:
1pcs Power cord
1pcs Remote control
(with two size AAA alkaline batteries)
1pcs User manual
1pcs Setup Guide
Component INPUT:
Rear Component x2:
Y : 1V(p-p), 75 ohm, including
sync.
Pr/Cr: ±0.35V(p-p), 75 ohm
Pb/Cb: ±0.35V(p-p), 75 ohm
AUDIO: 500mV(rms)
Supported resolutions:1080P,
1080i,
720p, ,
480p,
480i
Panel specification:
Active Area: 930.24(H) x 523.26 (V) (42.02” diagonal) mm
Bezel Opening Area: 938.3 (H) x 531.3 (V) mm
river Element: a-si TFT active matrix
Pixel Number: 1920x R.G.B. x 1080 pixel
Pixel Pitch(Sub Pixel): 0.1615 (H) x 0.4845 (V)mm
Pixel Arrangement: RGB vertical str
Display Colors: 16.7M
Display Operation Mode: Transmissive mode / Normally black
Surface Treatment: Anti-Glare coating (Haze 25%)
Hard coating (3H)
Contrast Ratio: 2000 (type) for CR
Response Time: 6.5ms(type) for “Gray to gray”

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2. Operating Instructions
2.1 The Use of Remote Control
POWER
Press to power ON/OFF (standby)
TV.(Note:1.TV is never completely
power off.
unless physically unplugged.
2.Press to turn on TV after the power
on status LED had changed to the
red color and stopped flashing. )
VIDEO
Press repeatedly to choose
S-Video/Composite source mode (Video
1 ~ 2).
COMP
Press repeatedly to choose Component
source mode (Video 3 ).
PC/HDMI
Press repeatedly to choose VGA or
HDMI source mode (Video 4 ~ 6).
TV
Press to choose ATSC/NTSC TV source
mode.
0 ~ 9 /- number
Press to enter TV channel number to
select channel (Press „-‟ to indicate
choosing the sub-channel).
SLEEP
Press to set a time period (off/5 min /10
min /15 min /30min/45 min
/60min/90min/120 min /180 min /240
min)after which the TV should switch
itself to standby mode.
FREEZE
Press to freeze the displayed picture
CH-/ CH +
Press + or - to browse through the TV
channels.
MENU
Press to open or exit menu.
“∧”,“∨”,“<”,“>”, “ENTER
Press to adjust the various function
items on the menu.
PREV CH
Press to display the previous TV .
MTS/SAP
Press to activate the NTSC TV
sounds, such as: Stereo, SAP or
Mono tone. And languages of DTV.
WIDE
Press to choose the display aspect
as: Normal, Wide, Zoom or Cinema
mode.
SOURCE
Press repeatedly to choose the
various input sources (Video 1 ~ 6).
EPG
This function is not support.
MUTE
Press to set TVsound mute ON/OFF
DISPLAY
Press to show the information about
the input source、TV channel、display
resolution and current time.
VOL- / VOL+
Press + or - to adjust the volume.
Exit
Press to exit menu or OSD.
V-CHIP
Press to lock / unlock Parental
Control temporarily. (After setting the
restricted table of MPAA or TV
Rating.)
VIDEO ADJ
Press to choose the Brightness or
Contrast adjustment.
AUDIO ADJ
Press to switch the ATSC
multi-channel TV sounds.
CC
Press repeatedly to change the
closed caption type as CC ON/CC
OFF/CC ON WHEN MUTE.
FAVORITE
Press to toggle the Favorite/Normal
mode.

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2.2 To Use the Menus
1. Press the MENU button to display the main menu
2. Use the cursor up/down to select a menu item.
3. Use the cursor left/right to enter a submenu.
4. Press the ENTER button to enable/disable the function.
5. Press the MENU or EXIT button to exit the menu.
Press the MENU button to enter the main OSD (On Screen Display).Adjust the items including Setup menu, Video
menu, Audio menu and Feature menu. However, some function items in the menus may only be enabled in the
particular source modes.
SETUP MENU
The Setup menu in TV mode shows as below. In others source modes, the Setup menu only shows Menu
Language and Aspect Ratio items.
1. Tuning Band: Select TV source signal from the Air (antenna) or Cable (CATV).
2. DTV Signal: 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. Manual Channel Set: Show the channel setup table. User can choose to display the ATSC or NTSC TV channels
and then edit (add/delete) the channel numbers.
6. Channel Labels: Show the NTSC / ATSC TV channel label menu for user modifying channel labels specifically.
7. Menu Language: Select the menu display language. (English / Espanol / Francais)
8. Aspect Ratio: Select the display aspect ratio. (Normal/Zoom/Wide/Cinema)
9. Favorite Channel Mode: When favorite channel mode on user can edit favorite channel table in favorite channel
set option.
The Video menu in most source modes shows as below. It provides several video adjustment items for user fine
tuning the video display. Only in VGA source modes, the Video menu simply provides Contrast,Brightness, Back
light and Settings (Preset) items.
VIDEO MENU

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1. Contrast: Video contrast adjustment, the tuning range is 0 ~ 100.
2. Brightness: Video brightness adjustment, the tuning range is 0 ~ 100.
3. Sharpness: Video sharpness adjustment, the tuning range is -50 ~ 50.
4. Color: Video color chroma adjustment, the tuning range is 0 ~ 100.
5. Tint: Video tint adjustment, the tuning range is R50 ~ G50.
6. BackLight: Backlight strength adjustment, the tuning range is 0 ~ 10.
7. Settings: Restore the default video settings.
The Audio menu in TV mode shows as below. It provides audio adjustment for user to modify the audio setting.
Audio language setting is only available with ATSC TV source, the option is disable under other source modes.
1.Audio Language:Change the audio language setting on ATSC TV programs
The number of the supported audio languages depends on the ATSC TV programs.
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 L31 ~ R31.)
5. Surround sound:press this item to on/off the stereo sound effect for audio.
6. Digital Audio Output: Digital audio output format selection, user can choose RAW (default) or PCM format or
off.
7. TV Speaker: Choose to turn on / off the TV internal speaker. The digital audio output signals、earphone output
signals will not be turn-off even though the TV speaker is off. The default setting is On.
8. Settings: Restore the default audio settings.
The Feature menu in TV mode shows as below. It provides certain optional control functions such as time set, sleep
timer, advanced video menu, Password Set, parental control (V-chip) and Digtal closed caption setting. This menu
gives users the most flexibilities to satisfy their generally demands. According to the various requirements in different
source modes, certain features should be hidden (disable) on the menu. The details footnotes will be described
clearly below.
AUDIO MENU
FEATURE MENU

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1. Time Set: Set current time. This sub-menu includesTime Set Mode ,Time Zone and Time items. 【Time Set
Mode】user can choose Auto or Manual,【Time Zone】item provides user to set current time zone, such as: Pacific,
Alaska, Hawaii, Eastern, Central and Mountain.
【
Time
】
item provides user to set the time clock.
2. Sleep Timer: Enable or disable the TV standby timer. User can set the TV standby timer
as off / 5 min / 10 min /
15 min/ 30 min / 45 min / 60 min/ 90 min / 120 min / 180min/ 240min. Timer starts to count down after cursor
leaving the sub-menu. (At the moment, the item shows 『** min Left』and the cursor highlights on the Feature
icon.)
3. Advanced Video Menu: Provide the Noise Reduction、Color Temperature and 3D Y/C. Dynamic Contrast options
for enhancing video quality.
【
Noise Reduction
】
gi
ves four NR effect degrees, such as: Low、Mid、High and Off. The default setting is Mid.
【
Colour Temp
】
gives three color temperature modes as: Normal、Warm and Cool.
【
3D Y/C
】
provides On / Off switches. The default setting is On.
【
Dynamic Contrast
】
user can choose 0n or Off.
【
Setting
】
restores the default advanced video option settings.
4. Password Set: 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 『0 0 0 0』.
5. 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. Then enter the Parental Lock item, 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.)

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6. Digital Captions: Select the close caption options ( Service 1-6, Text 1-4 and CC 1-4) in digital TV mode. When
select service 1 to service 6 you canmodulate parameters in the Digital Close Caption.
7. Digital Close Caption: Provide numerous options for setting the digital close caption style. In the sub-menu.
【Style】item can be set as 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 side of the sub-menu OSD.
Note: This feature is only available in Digital TV(ATSC) mode.
【Size】: Digital close caption font size, which can be set as Small、Normal or Large.
【Font】: Digital close caption font style, which can be chosen as Default or Font 1 ~ 7.
【Text Color】: Giving Red / Green / Blue/ Yellow / Magenta / Cyan / Black / White Colors.
【Text Opacity】: Giving Transparent / Translucent / Solid / Flashing modes.
【Background Color】: Giving Red / Green / Blue / Yellow / Magenta / Cyan / Black / White Colors.
【Background Opacity】: Giving Transparent / Translucent / Solid / Flashing modes.
【Edge Effect】: The text edge effects, which gives None / Raised / Depressed / Uniform / Left Shadow / Right
Shadow modes.
【Edge Color】: The colors of text edge effects, which provides Red / Green / Blue / Yellow / Magenta / Cyan /
Black / White Colors.
8. Audio only: press this item for those TV programs with audio only and without the display. When the audio only is
on, you could still modify the volume.
9. Component Set: This option only shows and is available in component mode, which provides fine tuning
component display, such as: 【H-Position】、【V-Position】, 【Clock】,【Phase】and【Auto Adjust】.All these
items are giving the tuning range from 0 to 100.【Setting】item providesthe default componentsetting values
restoring.

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10. VGA Set: This option only shows and is available in VGA mode, which provides several items for the VGA
display fine tuning, such as :【H-Position】、【V-Position】、【Clock】and【Phase】. All these items giving the tuning
range from 0 to 100.【Setting】item provides the default VGA setting values restoring.
2.3 How to Connect
Coaxial (RF)
Using Your Antenna or Digital Cable for DTV
1. Turn off the power to 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 power to the HDTV.
4. Select DTV using the INPUT 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 TV
1. Turn off the power to 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 power to the HDTV.
4. Select TV using the INPUT button on the remote, side of the HDTV or directly by pressing the TV button on
the Remote Control.

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Using the Antenna or Cable for your VCR
1. Turn off the power to the HDTV and VCR.
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 power to the HDTV and VCR.
4. Select TV using the INPUT 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 power to 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 power to the HDTV and HDTV Set-Top Box.
4. Select HDMI using the INPUT button on the remote, side of the HDTV, or directly by pressing the HDMI
button on the Remote Control.
Note: If you have an off-air antenna or cable TV, connect it
to the “Antenna In” connector on the rear of your VCR.
Note:
a) The HDMI input on the HDTV supports High-bandwidth Digital
Content Protection (HDCP). HDCP encrypts the transmission
between the video source and the digital display for added security
and protection.
b) Refer to your HDTV Set-Top Box user manual for more information
about the video output requirements of the product or consult your
cable or satellite operator.

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For HDTV Set-Top Boxes with DVI
1. Turn off the power to 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 power to the HDTV and HDTV Set-Top Box.
4. Select HDMI using the INPUT button on the remote, side of the HDTV, or directly by pressing the HDMI
button on the Remote Control.
Using Component Video
Connecting your HDTV Set-Top Box (Better):
1. Turn off the power to the HDTV and HDTV Set-Top Box.
2. Connect the Pr (red color) connector on your HDTV Set-Top Box to the corresponding Pr (red color) connector in the
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 your HDTV Set-Top Box and connect the other end to the audio connectors associated with the
Component.
6. Turn on the power to the HDTV and HDTV Set-Top Box.
7. Select Component (Video 3) using the INPUT button on the remote, side of the HDTV or directly by pressing the
Component button on the Remote Control.
Connecting Your Basic Set-Top Box
Using Composite Video
Note:
Refer to your HDTV Set-Top Box user manual for more
information about the video output requirements of the product or
consult your cable or satellite operator.
Note:
a) The HDMI input on the HDTV supports High-bandwidth Digital Content
Protection (HDCP). HDCP encrypts the transmission between the
video source and the digital display for added security and protection.
b) Refer to your HDTV Set-Top Box user manual for more information
about the video output requirements of the product or consult your
cable or satellite operator.
c) The DVI to HDMI connection provides video only. Connection to an
alternate audio player is required for audio.

42″LCD TV AOC L42H861
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1. Turn off the power to 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. Using the red and white connectors, connect the cable to the audio output connectors associated with the
Video output 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 power to the HDTV and Set-Top Box.
5. Select Composite (Video 1) using the INPUT button on the remote, side of the HDTV or directly by pressing
the AV button on the Remote Control.
Using Coax (RF)
1. Turn off the power to the HDTV and Set-Top Box.
2. Using a Coax (RF) cable, connect one end to the TV OUT (RF) on your Set Top Box and the other end to the
DTV/TV input at the rear of the HDTV.
3. Turn on the power to the HDTV and Set-Top Box.
4. Select TV using the INPUT button on the remote, side of the HDTV or directly by pressing the TV button
(below the WIDE 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 power to 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 power to the HDTV and DVD player.
4. Select HDMI using the INPUT button on the remote, side of the HDTV or directly by pressing the HDMI 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.
Note: Refer to your Set Top Box user manual for more information
about selecting the video or RF output of the product.

42″LCD TV AOC L42H861
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3. Turn on the power to the HDTV and your DVD player.
4. Select HDMI using the INPUT button on the remote or side of the HDTV, or directly by pressing the HDMI
button on the Remote.
Using Component Video
Connecting your DVD Player (Better)
1. Turn off the power to 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.
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 power to the HDTV and DVD player.
7. Select Component using the INPUT button on the remote, side of the HDTV or directly by pressing the
Component button on the Remote Control.
Using S-Video (AV)
Connecting your DVD Player (Good):
1. Turn off the power to the HDTV and DVD player.
2. Connect the S-Video jack on the rear of your DVD player to the S-Video jack in the AV group on the rear of
the HDTV.
3. Connect an audio cable (white and red connectors) to the audio output connectors associated with the
S-Video output 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 power to the HDTV and DVD player.
Note:
1. Refer to your DVD player user manual for more information
about the video output requirements of the product.
2. The DVI to HDMI connection provides video only. Connection
to an alternate audio player is required for audio output.
Note: Refer to your DVD player user manual for more information
about the video output requirements of the product.

42″LCD TV AOC L42H861
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5. Select S-Video (Video 2) using the INPUT button on the remote, side of the HDTV, or directly by pressing the
AV button on the Remote Control.
Using Composite (AV) Video
Connecting your DVD Player (Good)
1. Turn off the power to the HDTV and DVD player.
2. Connect the Video (yellow color) connector on your DVD player to the Video (yellow color) connector in the
AV group.
3. Connect the R (red color) and L (white color) audio connectors on your DVD player to the corresponding R
(red color) and L (white color) audio input connectors in the AV group.
4. Turn on the power to the HDTV and DVD Player.
5. Select Composite (Video 1) using the INPUT button on the remote, side of the HDTV or directly by pressing
the AV button on 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 VCR or Video Camera to the S-Video jack in the AV group on
the rear of the HDTV.
3. Connect an audio cable (white and red connectors) cable to the audio output connectors associated with the
S-Video output on your VCR or Video Camera and connect the other end to the audio connectors associated
with the AV input on the rear of the HDTV.
4. Turn on the power to the HDTV and VCR or Video Camera.
5. Select S-Video (Video 2) using the INPUT button on the remote, side of the HDTV or directly by pressing the
AV button on the Remote Control.
Connecting to a PC Computer
1. Turn off the power to the HDTV and PC Computer.
2. Connect a 15-pin D-Sub RGB (VGA) cable to the RGB output of your pc computer and the other end to the
RGB PC input at the rear of the HDTV.
3. Connect the Audio Out on your pc computer to the RGB PC Audio input at the rear of the HDTV.
Note: Refer to your VCR or Video Camera user manual for more
information about the video output requirements of the product.

42″LCD TV AOC L42H861
16
4. Turn on the HDTV and PC Computer.
5. Select RGB using the INPUT button on the remote, side of the HDTV or directly by pressing the RGB button
on the Remote.
Note: For the best picture quality when connecting a PC computer
through RGB PC, set your PC computer timing mode to native
resolution of panel. Please refer to the PC or graphic card‟s user
guide for additional information on how to set the timing mode and
the video output requirements of the product.

42″LCD TV AOC L42H861
17
2.4 Front Panel Control Knobs
1.
VOL +
VOL +:
Press to increase the sound volume level.
2.
VOL -
VOL - :
Press to decrease the sound volume level.
3.
CH ▲
CH +:
Press to select the next higher Program number.
4.
CH ▼
CH - :
Press to select the next lower Program number.
5.
MENU
Menu key:
Press
to open or exit the OSD menu.
6.
INPUT
Source key:
Press to select the input source.
7.
POWER
Power key:
Press to turn on / off (standby) the TV set.
(Please re-turn on TV after the Power-ON status LED had changed
to the Red color and finished flashing.)

42″LCD TV AOC L42H861
18
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
Mandatory +5V Supply for PC Bypass
2
Green Video
10
Sync Ground
3
Blue Video
11
SDA(Remote Control)
4
SCL(Remote Control)
12
Bi-directional Data (SDA) for PC Bypass
5
Ground
13
H-Sync.
6
Red Video Ground
14
V-Sync.
7
Green Video Ground
15
Data Clock (SCL) for PC Bypass
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
1
6
11
15
5
10

42″LCD TV AOC L42H861
19
3.3 AV/S-Video/Component Video Inputs
3.4 Compatible Mode Table
VESA MODES
Horizontal
Vertical
Mode
Resolution
Total
Nominal
Frequency
(KHz)
Sync
Polarity
Nominal
Freq.
(Hz)
Sync
Polarit
y
Nominal
Pixel
Clock
(MHz)
VGA
640x480@60Hz
800 x 525
31.469
N
59.940
N
25.175
640x480@72Hz
832 x 520
37.861
N
72.809
N
31.500
640x480@75Hz
840 x 500
37.5
N
75
N
31.500
720x400@70Hz
900 x 449
31.469
N
70.087
P
28.322
SVGA
800x600@56Hz
1024 x 625
35.156
P
56.25
P
36.000
800x600@60Hz
1056 x 628
37.879
P
60.317
P
40.000
800x600@72Hz
1040 x 666
48.077
P
72.188
P
50.000
800x600@75Hz
1056 x 625
46.875
P
75
P
49.5
XGA
1024x768@60Hz
1344x806
48.363
N
60.004
N
65.000
1024x768@70Hz
1328x806
56.476
N
70.069
N
75.000
1024x768@75Hz
1312x800
60.023
P
75.029
P
78.750
SXGA
1280x1024@60Hz
1688x1066
63.981
P
60.020
P
108.000
FHD
1920x1080@60Hz
2080x1111
66.587
P
59.934
N
138.500
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

42″LCD TV AOC L42H861
20
4. Mechanical Instructions
1. Remove the 4 screws to remove the stand.
2. Remove 13 screws to remove the rear cover.
3. Remove the bkt-PCB-holder,
4. Remove main board, power board.
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