Lenovo System x3250 M5, Installation And Service Manual

Page: 148 / 740

Table 23. Microprocessor's symptoms and actions
Symptom Action
When using the Core-I3 or
Pentium microprocessor and
the Integrated Graphics Device
(IGD) has been enabled in
the Setup utility, the video
controller can display a yellow
color exclamation mark under
the Windows OS device
manager. 1. Run the Setup utility and select System settings
➙
Device and I/O Ports
➙ Internal Graphics .
2. Set the value to Disable .
Monitor problems
Some Lenovo monitors have their own self-tests. If you suspect a problem with your monitor, see the
documentation that comes with the monitor for instructions for testing and adjusting the monitor. If you
cannot diagnose the problem, call for service.
• 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 Lenovo support website at http://www.lenovo.com/support to check for technical information,
hints, tips, and new device drivers or to submit a request for information.
Table 24. Monitor and video's symptoms and actions
The monitor and video's symptoms and actions table with one level of row and column headers.
Symptom Action
Testing the monitor. 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.
The screen is blank. 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 “Power
problems” on page 136.
• 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. Make sure that damaged server firmware is not affecting the video; see
“Updating the firmware” on page 85.
5. Observe the checkpoint LEDs on the system board; if the codes are changing,
go to next step.
6. Replace the following components one at a time, in the order shown, restarting
the server each time:
134
Lenovo System x3250 M5Installation and Service Guide