ViewSonic Va1912w4 Service Manual

ViewSonic Corporation
10. Black Box Test Signal: 1280*1024@60Hz
 
Test Pattern:   
 
Window standard pattern 
Inspection Item: Bright Dot, Line Defect & Power 
  11. RED 
Test Signal: 1280*1024@60Hz
 
Test Pattern:   
 
Full Screen Red   
Inspection Item: Bright Dot,  Partial & Line Defect 
 
12. Green 
Test Signal: 1280*1024@60Hz
 
Test Pattern:   
 
Full Screen Green 
Inspection Item: Bright Dot,  Partial & Line Defect 
  13. Blue 
Test Signal: 1280*1024@60Hz
 
Test Pattern:   
 
Full Screen Green...

ViewSonic Corporation
 
  
Figure 1  Figure 2 
  
Figure 3  Figure 4 
  
Figure 5  Figure 6 
 
 
Figure 7  Figure 8 
 
  
  
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ViewSonic Corporation
BIOS update procedure 
 
Mstar ISP Tool User Manual    
Setp1: 
Take the cable of Print Port to connect Print Port of PC and Print Port of fixture(and EDID burn in the same fixture) to connec t 
VGA Cable between D-sub of fixture and D-sub of AD Board of monitor ，the monitor must be turned on the power 。 
 
   
 
Step 2 : 
Open ISP Tool 
 
 
 
 
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ViewSonic Corporation
Step 3 : 
Press ”connect” into ISP mode，display the model of Flash ，The dialog of figure is displayed “Device Type is Pm25LV512” 
then press ” 確定”。  
 
 
Step 4: 
Press ”Read” then enter as below figure ，then press
  to down load the program of BIOS (*.bin) 。 
 
 
If down load BIOS that is succe ssful as below figure then press” 確定”。  
 
 
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ViewSonic Corporation
Step 5 : 
Press ”Auto” into below figure that display the value of BIOS Checksum below figure is displayed “0x1626” then press ”Run” 
to execute the BIOS procedure。 
 
 
 
The BIOS procedure is displayed the message ”V erify OK” that the BIOS procedure is successful。 
 
 
 
Step 6 : 
Press ”Dis Con” then leave the mode of ISP 。 
 
  
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ViewSonic Corporation
Step 7： 
When select ”ReConnect” and press “Run” th en repeat to connect the mode of ISP into next the action of BIOS procedure 
 
 
 
 
 
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ViewSonic Corporation
Packing For Shipping And Disassembly Procedure 
 
Packing For Shipping 
1. Packing Procedure 
 
1.1  Paste protection film to protect the monitor. (Figure 1) 
1.2  Put the monitor in the PE bag and seal the bag with tape. (Figure 2) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1.3  Put the cushions on the monitor. (Figure 3) 
1.4  Place the monitor into the carton and then put all the accessories  into the carton. As last, close the carton and seal it with 
tape. (Figure 4)...

Monitor Assembly and Disassembly   
1 Separate S
tand Assy  
1.1 Remove Stand Cover   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Step 2 :
 
Remove the Stand  Cover. 
Step 5 :  
Completed.  
Step 3 :
 
Loose and remove 4 screws  Step 1 :
 
Remove the Seat Assy  
Step4 :  
Remove the Stand Assy  ViewSonic Corporation
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2 Separate Rear Cover (Rear Case Assy)
 
     Separate Bezel hooks to take Bezel and Rear Cover apart.   
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
  Step 1 :
 
Loose and remove 2 screws.  
Step 2 :  
Separate Bezel hooks to take   
Beze l and Rear Cover apart.  
Step 3 :  
Remove Rear Cover.  
Step 4 :  
Completed.  ViewSonic Corporation
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3 Remove Power Board and 
AD Board 
3.1 Remove Metal Cover  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Step 1 :
 
Remove FFC from OSD Board.  Step 2 :
 
Loose and remove 4 screws.  Step 4 :
 
Remove 2 pieces of Backlight wires.  
Step 3 :
 
Lift up LCD module and remove bezel.  
  Step 5 :
 
Remove 2 pieces of Backlight wires.  ViewSonic Corporation
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