ViewSonic Vx2235wm4 Service Manual

5. Adjustment Procedure 
 
 
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1. Function Test 
 
1.1 Product 
- 22” LCD Monitor 
 
1.2 Test Equipment 
- Color Video Signal & Pattern (or PC with WSXGA+ resolution and a sound card) 
 
1.3 Test Condition 
Before function test and alignmen t, each LCD Monitor should be run- in and warmed up for at least 
30 minutes with the following conditions: 
(a) In room temperature, 
(b) With full-white screen, RGB, and Black 
(c) With cycled...

 
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Analog  Digital 
29. 1280 x 720 @ 50Hz, 37.5 kHz 
30. 1280 x 720 @ 60Hz, 45 kHz 
31. 1280 x 768 @ 50Hz, 39.6 kHz 
32. 1280 x 768 @ 60Hz, 47.8 kHz 
33. 1280 x 768 @ 75Hz, 60.3 kHz 
34. 1280 x 960 @ 50Hz, 49.4 kHz 
35. 1280 x 960 @ 60Hz, 59.7 kHz 
36. 1280 x 960 @ 75Hz, 75.2 kHz 
37. 1280 x 1024 @ 60Hz, 64 kHz 
38. 1280 x 1024 @ 75Hz, 80 kHz 
39. 1400 x 1050 @ 60Hz, 65.3 kHz 
40. 1400 x 900 @ 60Hz, 55.5 kHz 
41. 1400 x 900 @ 75Hz,...

 
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Horizontal & Vertical Thickness Pattern (Figure 3)            R. Color Pattern (Figure 4) 
 
 
   
         G. Color Pattern (Figure5)                      B. Color Pattern (Figure 6) 
 
 
 
      Full White Patter (Figure 7)                       Dark Screen Pattern (Figure 8) 
 
  

 
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Black-White Pattern (Figure 9) 
 
1.5 Function Test and Alignment Procedure 
1.5.1 All Modes Reset 
You should do “All Mode Reset” (Refer to Ch apter III-3. Hot Keys for Function Controls) 
first. This action will allow you to erase all end-user’s settings and restore the factory 
defaults. 
 
1.5.2 Auto Image Adjust 
Please select and enter  “Auto Image Adjust ” function on Main Menu to see if it is workable. 
The  “Auto...

 
 
 
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(a) Select and enter “Manual Image Adjust ” function on OSD Main Menu. 
(b) Then, select and enter “ Horizontal Size” or “Horizontal/Vertical Position ” function to 
adjust the video boundary to be full scanned and within screen frame. 
 
1.5.7 White Balance 
Test Signal: 1680*1050@60Hz 
Test Pattern: White and Black Pattern 
 
1.5.8 R, G, B, Colors Contrast 
Test Signal: 1680*1050@60Hz 
Test Pattern: R, G, B, Color...

 
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2. Firmware Upgrade Procedure 
 
When you receive the returned monitor, please  check whether the firmware version is the 
latest. 
If not, please do the following procedures  to upgrade it to the latest version. 
 
2.1 Equipment Needed 
- VX2235WM4 Monitor 
- Fixture for Firmware Upgrade 
- VGA Cable 
- PC (Personal Computer) 
- LPT Cable 
- Firmware Upgrade Program 
- One additional monitor for checking the program execution...

 
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Step 2: Load file 
Press the Load MCU File button to select the file will be download. (*.hex) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Step 3: Run 
Pressing the Run Button to start download program. Press OK button to Enter ISP mode. 
 
Step 4: Download program finish 
Pressing the OK Button to finish the download program procedure. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Trouble shooting: 
If you find the status like the follow pi cture. Please...

 
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3. DDC Key In Procedure 
Note: 
1. Every time after replacing the main board, you have to do the DDC key in. 
2. If you find the DDC does not conform to the monitor, you have to do the DDC key in. 
3.1 Equipment Needed 
- VX2235WM4 Series Monitor 
- DDC Card 
- PC 
- RS232 cable 
- DVI-DVI Cable 
- Barcode Reader 
- VGA Cable 
 
 VX2235WM4                     DDC Card                           PC 
 
 RS232 cable...

 
  
 
3.3 DDC Key In Procedure 
1.Run DDC.exe 
2.Choose model number and conform the Time then Press “ENTER” key. 
 
 
 
3.When appear the PIC “ choose DDC Card”,  Press ALT+2 .Enter DDC 2B test interface. 
 
              Choose DDC Card 
 
4.Press F8 to choose corresponding model.DAT(VX2235WM4A.DAT press“ENTER” key) 
VX2235WM4_A means the DDC under analog mode. VX2235WM4D means the DDC under digital 
mode. 
 
 
 
 
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  5.Press F9 enter the download interface 
 
 
 
6.Key in the serial number or use the barcode r eader to scan the barcode of the monitor, and 
press “ENTER” key. 
 
 
 
7.The successful picture is as follows. ”Compare EDID  ：OK! Press any key to continue”. 
 
 
 
 
 
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