Monitor and video problems
Some IBM 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.
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 4, “Parts listing, System x3550 M3 Types 4254 and 7944,” on page 159 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
Trained service technician.
v Go to the IBM support Web site at http://www.ibm.com/systems/support/ to check for technical
information, hints, tips, and new device drivers or to submit a request for information.
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 service 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. The IMM remote presence function is disabled if you install an optional video
adapter. To use the IMM remote presence function, remove the optional video
adapter.
3. Make sure that:
v The server is turned on. If there is no power to the server, see “Power
problems” on page 96.
v The monitor cables are connected correctly.
v The monitor is turned on and the brightness and contrast controls are
adjusted correctly.
4. Make sure that the correct server is controlling the monitor, if applicable.
5. Make sure that damaged server firmware is not affecting the video; see
“Updating the firmware” on page 255.
6. Observe the checkpoint LEDs on the system board; if the codes are changing,
go to step 6.
7. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Monitor
b. Video adapter (if one is installed)
c. (Trained service technician only) System board.
8. See “Solving undetermined problems” on page 155.
Chapter 3. Diagnostics 93
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