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                        Acer                                                                          Acer –LCD-H243H   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Service Manual 
LCD Monitor Acer H243H 
 
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                        1  Table of Contents    Important Safety Notice  .........................................................................................02  01  Product Specification ..........................................................................................03  02  Flat Panel Specification .......................................................................................15  03  Exploded Diagram ..............................................................................................36 
                    
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                        Acer                                                                          Acer –LCD-H243H      Important Safety Notice  1.  Safety precautions  This monitor is manufactured and tested on a ground principle that a user’s safety comes first.  However, improper used or installation may cause damage to the monitor as well as to the user.  Warning:   This monitor should be operated only at the correct power sources indicated on the label on the  rear of the monitor. If you’re unsure of the power 
                    
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                        Acer                                                                          Acer –LCD-H243H    01 Product Specification    1. General:  H243H is designed with LVDS interface and VGA/DVI-D/HDMI input, it featured with embedded universal AC power supplies and  audio input. It’s a green product and meets all ROHS standard. The power button and display control buttons are on the front of the  monitor. The monitors shall automatically to display lower resolution video modes into1920x1080full screen
                    
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                        Acer                                                                          Acer –LCD-H243H    Temperature range   : -20°C to 60°C   Humidity range    : 5% to 90%        note 2 2.1.3 Altitude   Operating             10000 ft (Ta=50, t=24h)  Storage     30000 ft (Ta=30, t=24h )     Note 1: Temperature and relative humidity range must be in the area shown as the following figure due to panel  limited  Note 2: Altitude spec must not over panel spec.     2.2 Safety, EMC, Ergonomics and Compatibili
                    
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                        Acer                                                                          Acer –LCD-H243H     75%   (DC output full loading and nominal AC input voltage range)    Ripple and Noise  Total composite ripple and noise less than 800mV for +25V output, and less than 150mV for +5V output, and 50mV for  +3.3V output tested by DC loading side parallel with a 47uF/EC and 0.1uF/Ceramic. Capacitors and measured band-width  with DC-20MHz    DC Output Voltage and Current  3.1 Brightness output  The test t
                    
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                        Acer                                                                          Acer –LCD-H243H    4. Input / Output Signal Specifications   4.1 Video signals    Analog  RGB signal: 0.7Vp-p (Input impedance  =  75 Ohm)  Sync:     TTL level (Input impedance   1k Ohm)  Positive and negative sync of Separate Horizontal/Vertical Sync    Digital :   TMDS Signal:          (min)  ±200mVpp@24Bit     4.2 Signal Timing  Through D-SUB/DVI connectors, this unit can support F = 31~80 KHz, Fv=55~76Hz, with maxi
                    
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                        Acer                                                                          Acer –LCD-H243H    Vertical / Horizontal Sync polarity: positive or negative.  If input signal is out of range of horizontal 31~80 KHz or vertical 55-76Hz, or pixel clock large than 165MHz, message  “Input Not Supported” is shown on screen.  4.1 DDC data    H243H Analog   0 1 2 3 4 5 6 7 8 9 A B C D E F  0 00 FF FF FF FF FF FF 00 04 72 74 00 01 01 01 01  1 00 00 01 03 68 35 1D 78 EA 60 85 A6 56 4A 9C 25  2 12 50 54 AF 
                    
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                        Acer                                                                          Acer –LCD-H243H    Number of Pixel 1920 × 1080  Pixel Arrangement R.G.B. Vertical Stripe  2   Brightness 300 cd/m (TYP.)  Contrast Ratio 1000 (TYP.)  Viewing Angle 170(Horizontal) / 160(Vertical)  Display Mode Normally White  Frame rate 75  Response Time 5ms (TYP. ON/OFF) / 2ms (Gray to Gray)  Surface Treatment Anti-Glare, 3H  Lamp 4  Outline Dimension 556.0(W) ×323.2(H) ×16.65(D)  (TYP.)  5.2 Keypad Function  5.2.1 Co
                    
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                        Acer                                                                          Acer –LCD-H243H    Press [e], and then press  [POWER] for DC power on.  FACTORY     ● ON OSD menu will be shown with  MODE  “F” on the left top. Select “F” for  entering factory mode.    5.4 OSD Structure  The On-Screen Display (OSD) shall be an easy to use icon based menu through keypad OSD buttons or remote control  unit. The unit shall leave the factory with all OSD controls set to their default values.  Control  Fi
                    
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                        Acer                                                                          Acer –LCD-H243H     OFF     ON  ACM  --- --- OFF  OFF  VGA  ---  ---  Input DVI  ---  --- ---  HDMI  ---  ---  EMEA NO-EMEA  ---  ---  English English  ---  ---     Russian  ---  ---  Deutsch Deutsch  ---  ---  Français Français  ---  ---  Language English  Español Español  ---  ---  Italiano Italiano  ---  ---  简  Dutch  ---  ---     Finnish  ---  ---  Reset  ---  ---  ---  ---  Resolution  ---  ---  ---  H. Freq  ---
                    
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                        Acer                                                                          Acer –LCD-H243H                                One port of ISP  program card  is connected to    PC print port.   2. Adjust ISP programming  Firstly, double click ISP_Tool_v3.7.5EXEI and open ISP program, then select “Device”, next select manufacturer model of  FW IC, which should be correspondent with that of PCBA FW IC. Double click Figure One.   FW IC  Model      Secondly  download FW software:  first select “READ”,
                    
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                        Acer                                                                          Acer –LCD-H243H      Thirdly, select “Connect” and enter ISP MODE as in the following Figure 3.      Fourthly, select “AUTO”, and keep its default value. Click “RUN” for beginning programming. There will be prompting if  programming is OK.                               12                                                                                                                                                      
                    
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                        Acer                                                                          Acer –LCD-H243H      Note: if programming fails or success rate is not high, click “Config” and adjust its speed in “E2PROM DEVICE SETTING”             After connecting, AC ON,  DC ON   Flowing chart OK  Open ISP program  OK  Choose manufacturer  and model of FW IC  OK  LOAD FW software  OK  Click Connect and enter  ISP MODE  OK  Choose Config  and adjust  programming  NG OK  Turn off power if  programming is OK       
                    
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                        Acer                                                                          Acer –LCD-H243H      2. Flat Panel Specification                   14                                                                                                                                                                                                                                                                                                                                                                 
                    
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