ViewSonic Vx2235wm4 Service Manual

 
Packing For Shipping And Disassembly Procedure 
 
Packing For Shipping 
 
1. Packing Procedure 
1.1 Paste protection film to protect the LCD TV. (Figure 1) 
1.2 Put the LCD TV in the PE bag and seal the bag. (Figure 2~3) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1.3 Put the cushions on the LCD TV. (Figure 4) 
1.4 Place the LCD TV into the carton and then Put the other cushions on the LCD TV,put all the 
accessories into the carton. At last, close th e carton and seal it with tape. (Figure 5)...

 
Disassembly Procedure 
 
1. Disassembly of Stand and Dust Cover from LCD TV. 
1.1  Unscrew 4 screws that secure Stand Un it and detach Dust Cover from the LCD TV. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Stand
Dust Cover
 29 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

 
2.  Disassembly of Rear Cover. 
2.1  Unscrew 8 screws to remove Rear Cover. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3.  Disassembly of Main Board,Power Board,IR Board,Speaker,Front Cover  and Panel Unit. 
3.1  Unscrew 7 screws to remove Shield Plate.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Shield Plate
Rear Cover
 30 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

 3.2. Unscrew 6 screws and disconnect 
the wires to remove Power Board. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  3.3. Unscrew 2 screws and disconnect  the wires to remove Main Board. 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Main Board 
Power Board 
 31 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

 3.4. Unscrew 8 screws to remove Speaker and Bracket,Fix. 
 
 
   
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
3.5. Unscrew 8 screws to remove Front Cover. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Speaker 
Bracket,Fix 
 32 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

  3.6. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides, to remove Panel Unit 
and Panel Bracket. 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  Panel Unit 
Panel Bracket 
Key Board 
 33 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

6. Troubleshooting Flow Chart 
 
 
 34 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

6.1. NO POWER 
 
 
6.2. MCU NO FUNCTION 
 
 
 
 
 
 
 
 
 
 
 35 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

 
6.3. NO DISPLAY 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 36 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4  

7. Block Diagram 
 
 
 
 37 
ViewSonic Corporation   
Confidential - Do Not Copy    VX2235wm-4