4-3 
 
4.6.2 Display Failures 
Symptoms   Possible Cause  Corrective Action 
Cables defective or 
poorly connected. 
1. Check that the cable from the display to the 
mother board and the cables from the backlight 
board respectively to the button board and the 
display are correctly connected. 
2. Check that the cables and connectors are not 
damaged. 
Backlight board 
defective 
Replace the backlight board. 
Power module defective  Replace the power module. 
Integrated 
display is blank 
but the patient 
monitor still 
works correctly. 
Display defective  Replace the display. 
Cables defective or 
poorly connected. 
1. Check that the cable between the display and the 
patient monitor is correctly connected.   
2. Check that the cables and connectors are not 
damaged. 
Secondary 
display does not 
function. 
DVI interface board 
defective 
Replace the DVI interface board. 
Cables defective or 
poorly connected. 
1. Check that the cable between the display and the 
patient monitor is correctly connected.   
2. Check that the cables and connectors are not 
damaged. 
DVI interface board 
defective 
Replace the DVI interface board. 
Secondary 
display displays 
snows or 
flashing specks   
The mother board is 
damaged. 
Replace the mother board. 
FPGA error.  Update or upgrade FPGA. Images 
overlapped or 
distorted  
Cables defective or 
poorly connected. 
1. Check that the cable between the display and 
mother board is correctly connected.     
2. Check that the cables and connectors are not 
damaged. 
Touchscreen 
does not 
response 
Touchscreen disabled 
Check if there is a symbol 
  shown above the 
[Main Menu] QuickKey. If yes, press the [Main 
Menu] QuickKey for more than 3s to enable the 
touchscreen.