ViewSonic Va1903wb2 Service Manual

							 
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Black-White Pattern (Figure 9) 
4.3 Function Test and Alignment Procedure 
All Modes Reset 
You should do “All Mode Reset” (Refer to Chapter 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. 
Auto Image Adjust 
Please select and enter “Auto Image Adjust” function on Main Menu to see if it is 
workable. The “Auto Image Adjust” function is aimed to offer a better screen quality 
by built-in ASIC. For optimum screen quality, the user has to adjust each function 
manually. 
Firmware 
Test Pattern: Burn In Mode (Refer to Chapter III-3. Hot Keys for Function Controls) 
-  Make sure the F/W is the latest version. 
DDC 
Test Pattern: EDID program 
Make sure it can pass test program. 
Fine Tune and Sharpness 
Test Signal: 1440*900@60Hz 
Test Pattern: Line Moire Pattern 
Check and see if the image has noise and focus performs well. Eliminate visual 
line bar. 
If not, readjust by the following steps: 
(a)Select and enter “Fine Tune” function on “Manual Image Adjust” to adjust the 
image to eliminate visual wavy noise. 
(b)Then, select and enter “Sharpness” function to adjust the clarity and focus of 
the screen image. 
Boundary 
Test Signal: 1440*900@60Hz 
Test Pattern: Horizontal & Vertical Line Thickness Pattern 
Check and see if the image boundary is within the screen frame. 
If not, readjust by the following steps: 
(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.  
						

							 
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White Balance 
Test Signal: 1440*900@60Hz 
Test Pattern: White and Black Pattern 
1.5.8 R, G, B, Colors Contrast 
Test Signal: 1440*900@60Hz 
Test Pattern: R, G, B, Color Intensities Pattern and 16 Gray Scale Pattern 
-  Check and see if each color is normal and distinguishable. 
-  If not, please return the unit to repair area. 
Screen Uniformity and Flicker 
Test Signal: 1440*900@60Hz 
Test Pattern: Full White Pattern 
-  Check and see if it is in normal condition. 
1.5.10 Dead Pixel and Line 
Test Signal: 1440*900@60Hz 
Test Pattern: Dark and White Screen Pattern 
-  Check and see if there are dead pixels on LCD panel with shadow gauge and 
filter film. 
-  The total numbers and distance of dead pixels should be compliant with the 
spec. 
Mura 
Test Pattern: White, RGB, Black, & Grey 
Test Tool: 10% ND Filter 
-  Check if the Mura can pass 10% ND Filter. 
Audio 
Test Signal: Voice signal (optional, depend on model) 
Test Pattern: liberty 
-  Make sure there is audio output. 
-  Make sure that audio function (volume 80%) is working without noise and 
resonance. 
-  Make sure that the sound of right and left speakers are in balance. 
Check for Secondary Display Modes 
Test Signal: 
Analog:  640*480@60/75Hz; 
720*400@70Hz; 800*600@56/60/72/75Hz; 
1024*768@60/70/72/75Hz; 1280*1024@60/75Hz 
1440*900@60/75Hz 
-  Normally when the primary mode 1440*900@60Hz is well adjusted and 
compliant with the specification, the secondary display modes will also be 
compliant with the spec. But we still have to check with the general test pattern to 
make sure every secondary is compliant with the specification. 
All Modes Reset 
After final QC step, we have to erase all saved changes again and restore the 
factory defaults. You should do “All Mode Reset” again. 
Power Off Monitor 
Turn off the monitor by pressing “Power” button. 
5.6  Firmware Upgrade Procedure  
When you receive the returned monitor, please check whether the firmware version is  
						

							 
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the latest. If not, please do the following procedures to upgrade it to the latest version.   
1 Equipment Needed   
- VA1703W/VA1903W Monitor   
- Fixture for Firmware Upgrade   
- Power Adapter (P/N: 47.58201.001) *1 for Fixture   
- VGA Cable (P/N: 42.59901.003) *1(Pin 4, 11 should be connected to GND)   
- PC (Personal Computer)   
- LPT Cable (P/N: 42.59906.001) *1   
- Firmware Upgrade Program   
- One additional monitor for checking the program execution 
 
2 Setup Procedure  
2.1 Connect P2 of Fixture with printer port of PC by LPT Cable.   
2.2 Connect P1 of Fixture with VA1703W/VA1903W Monitor by VGA Cable.   
2.3 Plug Power Adapter to Fixture.   
2.4 Connect Power Cord to VA1703W/VA1903W Monitor.   
2.5 Connect P3 to the Signal Generator (eg.Chroma2326) for verifying it after the 
operation being completed. 
2.6 Connect PC to the additional monitor. 
    
VA1703W/VA1903W  
						

							 
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3 Firmware Upgrade Procedure 
Step 1. Let VA1703W/VA1903W set to be connected with AC cable and VGA cable. 
 
Step 2.Execute the MSstar ISP tool. 
 
 
Step 3. Click “Connect” button . (On this step, if the connection is successful, the 
“Device Type is ******(Flash Type)” Dialog will be showed. If not, the error dialog will be 
done.) 
P2：to LPT Cable 
JP1：to Power Adapter 
P1：to VGA Cable 
P3：to Signal Generator 
						

							 
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Step 4. Click “Read” button. Select the object bincode on your corresponding directory. 
 
 
 
Step 5. Click “Auto” button. Be sure that function of Erase Device (File Area), Blank, 
Program and Verify is selected, then execute the flashing action by clicking the “Run” 
button.  
						

							 
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Step 6. If the flashing F/W has been completed, “Verify Ok” message will be shown on 
the right TextBox. 
 
Step 7. Unplug and replug power cord of VA1703W/VA1903W set and then check the 
OSD operation and image on srceen.   
 
Step 8. At last, do “Memory Recall.” 
 
 
 
 
 
 
 
 
 
 
  
						

							 
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3.2 Setup Procedure 
3.2.1 Connect P2 and monitor of Fixture with VGA ports of VA1703W/VA1903W by 
VGA Cable. 
3.2.2 Connect P1 of Fixture with Printer port of PC by LPT Cable. 
3.2.3 Plug Power Adapter to Fixture. 
3.2.4 Connect Power Cord to VA1703W/VA1903W Monitor. 
3.2.5 Connect PC to the additional monitor. 
 
 
3.3 DDC Key In Procedure 
  Sep1.Select and execute DDC Key In program 
JP1： Power Adapter 
P2： VGA Cable
P1：to LTP Cable  
						

							 
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Sep2:Inpute the S/N and execute “Enter” 
 
 
 
 
 
  
						

							 
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ViewSonic Corporation              
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