2
Troubleshooting
NOTE
Magnetic fields affect the monitor’s performance and can give
a false indication of a monitor failure. Place the monitor away
from:
• Electromagnetic devices, such as other monitors
• Magnetized objects, such as filing cabinets and steel beams in
walls
Learn About the Problem
Talk to the operator to get a history of the problem. The operator often
has detailed knowledge about the problem.
Identify the Problem
Identify the problem before you remove field replaceable units (FRUs).
For example, the screen display often indicates which problem is
occurring.
Isolate the Problem
After you clearly identify a problem, check the list of problem types at
the beginning of Section 1.2. Select the type that best describes your
problem. Go to the flowchart for that problem. Turn off the power before
disconnecting or replacing any FRU.
WARNING
If you smell burning components, press the monitor power switch
off (O), wait 10 seconds, then disconnect the power cord.
Correct the Problem
Complete all the steps in the troubleshooting flowchart(s) for your
problem. When you are finished, display the host system’s alignment
test patterns to make sure no other problem exists. To display the test
patterns, refer to the host system’s service manual.