Lenovo System x3100 M4 Installation And Service Manual page 134

Table 22. Monitor and video's symptoms and actions
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(Trained technician only)", that step must be performed only by a trained
technician.
• Go to the IBM support website at
tips, and new device drivers or to submit a request for information.
Symptom
Testing the monitor.
The screen is blank.
The monitor works when you
turn on the server, but the
screen goes blank when you
start some application
programs.
System x3100 M4 Installation and Service Guide
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Action
1. Make sure that the monitor cables are firmly connected.
2. Try using a different monitor on the server, or try using the monitor that is being
tested on a different server.
3. Run the diagnostic programs. If the monitor passes the diagnostic programs,
the problem might be a video device driver.
4. (Trained technician only) Replace the system board.
1. If the server is attached to a KVM switch, bypass the KVM switch to eliminate it
as a possible cause of the problem: connect the monitor cable directly to the
correct connector on the rear of the server.
2. Make sure that:
• The server is turned on. If there is no power to the server, see
problems" on page
• The monitor cables are connected correctly.
• The monitor is turned on and the brightness and contrast controls are
adjusted correctly.
• No POST errors are generated when the server is turned on.
3. Make sure that the correct server is controlling the monitor, if applicable.
4. See "Solving undetermined problems" on page
1. Make sure that:
• The application program is not setting a display mode that is higher than the
capability of the monitor.
• You installed the necessary device drivers for the application.
2. Run video diagnostics (see
page 112).
• If the server passes the video diagnostics, the video is good; see
undetermined problems" on page
• (Trained technician only) If the server fails the video diagnostics, replace the
system board.
to check for technical information, hints,
123.
130.
"Running DSA Preboot diagnostic programs" on
130.
"Power
"Solving