AOC e2351Fh User manual

23" LCD Color Monitor AOC E2351Fh
Service
Service
Service
Horizontal Frequency
64-83 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.
Table of Contents.......……..............................……........1
Revision List.…........................................…………........2
Important Safety Notice.……............................……......3
1.Monitor Specification..............................………..........4
2.LCD Monitor Description……………………………......5
3.Operation Instruction…………...............……..............6
3.1.General Instructions...........................…...................6
3.2.Hot Keys…………….…..............……...............6
3.3.OSD Setting…………….…...........................…......7
4.Input/Output Specification............……………............20
4.1.Input Signal Connector............………….................20
4.2.Factory Preset Display Modes…….........................21
4.3.Panel Specification.....………...…………................22
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
5.Block Diagram…….........………….................24
6.Schematic……………........................................25
6.1.Main Board………...........................................25
6.2.Key Board...…….............................................31
7.PCB Layout..………….......................................32
7.1.Main Board………...........................................32
7.2.Key Board…………….....................................34
8.Maintainability……….........................................35
8.1.Equipments and Tools Requirement...............35
8.2.Trouble Shooting………….............................36
9.White-Balance, Luminance Adjustment.............40
10.Monitor Exploded View………..…….…............42
11.BOM List…………………………………...........44
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Revision List
Version Release Date Revision History L&T Model Name
A00 May-12-2011 Initial Release
HDAJNZ2CB7GGDNF.LF
HDAJNZ2MB75ADNF.LF
HDAJNZ2MB75ADNF.LF
A01 May-17-2011 Add new model HDAJNZ2MB75ADNF.LF
A02 May-20-2011 Add new models
HDAJNZ2LB7IGDNF.LF
HDAJNZ2TB71RDNF.LF
HDAJNZ2FB7UMDNF.LF
HDAJNZ2MB7RODNF.LF
A03 Nov-7-2011 Add new models HDAJNZ2CB78ADNF.LF
HDAJNZ2EB77ADNF.LF
A04 Feb-13-2012 Add new models HDAJNZ2AB7PGDNF.LF
A05 Feb-26-2012 Add new models HDAJNZ2CB7SUDNF.LF
A06 JUN-24-2012 Add new model HDAJNZ2QB7A6CNF.LF
A07 AUG-03-2012 Add new model HDCJNZ2TB71RDNF.LF
A08 SEP-18-2012 Add new model HDCJNZ2MB7RODNF.LF
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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 may 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 radiation 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.)
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1. Monitor Specifications
Panel
Model number e2351Fh
Driving system TFT Color LCD
Viewable Image Size 584.2mm diagoanl
Pixel pitch 0.0883*RGB mm(H) x 0.265mm(V)
Video R, G, B Analog lnterface
Separate Sync. H/V TTL
Display Color 16.7M Colors
Dot Clock 144MHz
Resolution
Horizontal scan range 64 kHz – 83 kHz
Horizontal scan Size(Maximum) 535.7mm
Vertical scan range 50 Hz - 76 Hz
Vertical scan Size(Maximum) 311.2 mm
Optimal preset resolution 1920x1080 (60 Hz)
Highest preset resolution 1920x1080 (60 Hz)
Plug & Play VESA DDC2B
Input Connector VGA/DVI/HDMI
Input Video Signal Analog: 0.7Vp-p(standard), 75 OHM, Positive
Power Source 100~240VAC, 50/60Hz
Power Consumption 36W
Standby < 0.5 W
Physical
Characteristics
Connector Type VGA/DVI/HDMI
Signal Cable Type Detachable
Dimensions & Weight:
Height (with base) 425.5mm
Width 550mm
Depth 194mm
Weight (monitor only) 2.478kg
Environmental
Temperature:
Operating 0°Cto 40° C
Non-Operating -25°Cto 55°C
Humidity:
Operating 10% to 85% (non-condensing)
Non-Operating 5% to 93% (non-condensing)
Altitude:
Operating 0~ 3,658m (0~ 12,000 ft )
Non-Operating 0~ 12,192m (0~ 40,000 ft )
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2. LCD Monitor Description
The LCD MONITOR will contain a main board and a key board which house the flat panel control logic, brightness
control logic and DDC.
Monitor Block Diagram
Flat Panel and
LED backlight
Main Board
Key Board
DVI
Signal
Adapter
D-SUB
Signal
AC-IN
100V~24
LED Drive.
HDMI
Signal
Audio
out
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3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor.
By changing these settings, the picture can be adjusted to your personal preferences.
3.2 Hotkeys
Power
Press the Power button to turn on/off the monitor.
Menu/Enter
Press to display the OSD or confirm the selection
Eco (DCR)/-
Press the Eco key continuously to select the Eco mode of brightness and DCR on when there is no OSD. (Eco
mode hot key may not be available in all models).
4:3 or Wide/+
When there is no OSD, press > continuously to change 4:3 or wide image ratio. (If the product screen size is 4:3 or
input signal resolution is wide format, the hot key is disabled to adjust.)
Source/Auto / Exit
Auto / Exit
When the OSD is closed, press Auto/Source/Exit button continuously about 2 second to do auto configure (only for
the models with dual or more inputs).
When the OSD is closed, press Auto/Source/Exit button will be Source hot key function (Only for the models with
dual or more inputs).
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3.3 OSD Setting
Basic and simple instruction on the control keys.
1) Press the MENU-button to activate the OSD window.
2) Press < or > to navigate through the functions. Once the desired function is highlighted, press the
MENU-button to activate sub-menu . Once the desired function is highlighted, press MENU-button to activate
it.
3) Press or to change the settings of the selected function. Press AUTO to exit. If you want to
adjust any other function, repeat steps 2-3.
4) OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then
press power button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while
the monitor is off and then press power button to turn the monitor on.
Notes:
1) If the product has only one signal input, the item of "Input Select" is disable to adjust.
2) If the product screen size is 4:3 or input signal resolution is wide format, the item of "Image Ratio" is disable to
adjust.
3) One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.
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Luminance
1
Press (Menu) to display menu
2
Press or to select (Luminance), and press to enter
3
Press or to select submenu, and press to enter.
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4
Press or to adjust
5
Press to exit.
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Image Setup
1
Press (Menu) to display menu
2
Press or to select (Image Setup) , and press to enter.
3
Press or to select submenu, and press to enter.
4
Press or to adjust.
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5
Press to exit.
Clock 0-100 Adjust picture Clock to reduce Vertical-Line noise.
Phase 0-100 Adjust Picture Phase to reduce Horizontal-Line noise
Sharpness 0-100 Adjust picture sharpness
H.Position 0-100 Adjust the horizontal position of the picture.
V.Position 0-100 Adjust the vertical position of the picture.
Color Setup
1
Press (Menu) to display menu.
2
Press or to select (Color Setup), and press to enter.
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3
Press or to select submenu, and press to enter.
4
Press or to adjust.
5
Press to exit.
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Color setup.
Warm Recall Warm Color Temperature from EEPROM.
Normal Recall Normal Color Temperature from EEPROM.
Cool Recall Cool Color Temperature from EEPROM.
sRGB Recall SRGB Color Temperature from EEPROM.
User
Red Red Gain from Digital-register
Green Green Gain Digital-register.
Blue Blue Gain from Digital-register
DCB Mode
Full
Enhance on or off Disable or Enable Full Enhance Mode
Nature Skin on or off Disable or Enable Nature Skin Mode
Green Field on or off Disable or Enable Green Field Mode
Sky-blue on or off Disable or Enable Sky-blue Mode
AutoDetect on or off Disable or Enable AutoDetect Mode
DCB Demo on or off Disable or Enable Demo
Picture Boost
1
Press (Menu) to display menu.
2
Press or to select (Picture Boost), and press to enter.
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3
Press or to select submenu, and press to enter.
4
Press or to adjust.
5
Press to exit.
Frame Size 14-100 Adjust Frame Size
Brightness 0-100 Adjust Frame Brightness
Contras 0-100 Adjust Frame Contrast
H. position 0-100 Adjust Frame horizontal Position
V.position 0-100 Adjust Frame vertical Position
Bright Frame on or off Disable or Enable Bright Frame
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OSD Setup
1
Press (Menu) to display menu.
2
Press or to select (OSD Setup), and press to enter.
3
Press or to select submenu, and press to enter.
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4
Press or to adjust.
5
Press to exit.
H.Position 0-100 Adjust the horizontal position of OSD
V.Position 0-100 Adjust the vertical position of OSD
Timeout 5-120 Adjust the OSD Timeout
Transparence 0-100 Adjust the transparence of OSD
Language Select the OSD language
Extra
1
Press (Menu) to display menu.
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2
Press or to select (Extra), and press to enter.
3
Press or to select submenu, and press to enter.
4
Press or to adjust.
5
Press to exit.
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Input Select Analog Select Analog Signal Source as Input
Auto Config yes or no Auto adjust the picture to default
Off timer 0-24hrs Select DC off time
Image Ratio wide or 4:3 Select wide Select wide or 4:3 format for display
DDC-CI yes or no Turn ON/OFF DDC-CI Support
Reset yes or no Reset the menu to default
Information Show the information of the main image and
sub-image source
Exit
1
Press (Menu) to display menu.
2
Press or to select (Exit), and press to exit.
Exit Exit the main OSD
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4. Input/Output Specification
4.1 D-SUB CONNECTORS and DVI CONNECTORS
Pin Assignments
Pin Number 15-Pin Side of the Signal Cable Pin Number 15-Pin Side of the Signal Cable
1 Video-Red 9 +5V
2 Video-Green 10 Ground
3 Video-Blue 11 N.C.
4 N.C. 12 DDC- Serial data
5 Detect Cable 13 H- sync
6 GND-R 14 V- sync
7 GND-G 15 DDC- Serial clock
8 GND-B
Pin Number 24-Pin Color Display Signal Cable Pin Number 24-Pin Color Display Signal Cable
1 TMDS data 2－13 TMDS data 3＋
2 TMDS data 2＋14 ＋5V Power
3 TMDS data 2/4 Shield 15
Ground（对于 +5V ）
4 TMDS data 4－16 Hot Plug Detect
5 TMDS data 4＋17 TMDS data 0－
6 DDC Clock 18
TMDS data 0＋
7 DDC data 19 TMDS data 0/5 Shield
8 N.C. 20 TMDS data 5－
9 TMDS data 1－21 TMDS data 5＋
10 TMDS data 1＋22 TMDS Clock Shield
11 TMDS data 1/3 Shield 23 TMDS Clock +
12 TMDS data 3－24 TMDS Clock－
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4.2 Factory Preset Display Modes
STAND RESOLUTION HORIZONTAL
FREQUENCY(kHZ)
VERTICAL
FREQUENCY(Hz)
VGA
640x480@60Hz 31.469 59.940
640x480@72Hz 37.861 72.809
640x480@75Hz 37.500 75.000
SVGA
800x600@56Hz 35.156 56.250
800x600@60Hz 37.879 60.317
800x600@72Hz 48.077 72.188
800x600@75Hz 46.875 75.000
XGA
1024x768@60Hz 48.363 60.004
1024x768@70Hz 56.476 70.069
1024x768@75Hz 60.023 75.029
SXGA
1280x1024@60Hz 63.981 60.020
1280x1024@75Hz 79.976 75.025
WXGA+
1440x900@60Hz 55.935 59.887
1440x900@60Hz 55.469 59.901
WSXGA
1680x1050@60Hz 65.290 59.954
1680x1050@60Hz 64.674 59.883
WUXGA 1920x1080@60HZ 67.500 59.934
1280x720@60Hz 45.000 60.000
1280x960@60HZ 60.000 60.000
IBM-MODE DOS 720x400@70Hz 31.469 70.087
MAC MODE VGA
640x480@67Hz 35.000 66.667
832x624@75Hz 49.725 74.551
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