AOC e2351Fh Manuale utente
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
2
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
3
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.)
4
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 )
5
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
6
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).
7
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.
8
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.
9
4
Press or to adjust
5
Press to exit.
10
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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