Troubleshooting Guide 4 Troubleshooting
63
External Display is blank
Symptoms Possible Causes of Failure Failure Isolation and Remedy
External Display is blank If integrated display is also blank proceed
as described under “Integrated Display is
blank”
Video cable to external display
not connected
Check video cable connection to external
display
External display has no power
Check electricity supply of external
display
External display is defective
Check external display and video cable
on another monitor or PC
Video board defective
Replace video baord
Main board defective Replace main board
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