Monitor And Video Problems - Lenovo System x3550 M4 Installation And Service Manual

• 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 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.
Symptom
The server goes directly to the
POST Event Viewer when it is
turned on.

Monitor and video problems

Use this information to solve monitor and video 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 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.
Symptom
Testing the monitor.
The screen is blank.
Action
1. Correct any errors that are indicated by the light path diagnostics LEDs (see
"Light path diagnostics" on page 121).
2. Make sure that the server supports all the microprocessors and that the
microprocessors match in speed and cache size. To view the microprocessor
information, run the Setup utility and select System Information ➙ System
Summary ➙ Processor Details.
3. (Trained technician only) Make sure that microprocessor 1 is seated correctly.
4. (Trained technician only) Remove microprocessor 2 and restart the server.
5. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. (Trained technician only) Microprocessor
b. (Trained technician only) System board
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. The IMM2 remote presence function is disabled if you install an optional video
adapter. To use the IMM2 remote presence function, remove the optional video
adapter.
3. If the server installed with the graphical adapters while turning on the server,
the logo displays on the screen after approximately 3 minutes. This is normal
operation while the system loads.
4. Make sure that:
.
Chapter 4 Troubleshooting
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