Monitor Or Video Problems - IBM BladeCenter HS21 Series Problem Determination And Service Manual

Monitor or video problems

The video monitor is a shared BladeCenter unit resource. First, make sure that the
video monitor is assigned to the blade server; then, see the following table and
"Solving shared BladeCenter resource problems" on page 66.
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 3, "Parts listing, Types 1885 and 8853," on page 73 to determine which components are CRUs
and which components are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
The screen is blank.
The monitor has screen jitter, or
the screen image is wavy,
unreadable, rolling, or distorted.
Wrong characters appear on the
screen.
Action
1. Check the function of the shared BladeCenter unit resources (see "Solving
shared BladeCenter resource problems" on page 66).
2. Make sure that:
v Damaged BIOS code is not affecting the video; see "Recovering from a
BIOS update failure" on page 64.
Important: In some memory configurations, the 3-3-3 beep code might
sound during POST followed by a blank display screen. If this occurs and
the Boot Fail Count feature in the Start Options of the Configuration/Setup
Utility program is set to Enabled (its default setting), you must restart the
blade server three times to force the system BIOS to reset the memory
connector or bank of connectors from Disabled to Enabled.
v The device drivers are installed correctly.
3. (Trained service technician only) Replace the system board assembly
1. Check the function of the shared BladeCenter unit resources (see "Solving
shared BladeCenter resource problems" on page 66).
2. (Trained service technician only) Replace the system board assembly.
1. If the wrong language is displayed, update the firmware or operating system
with the correct language in the blade server that has ownership of the monitor.
2. Check the function of the shared BladeCenter unit resources (see "Solving
shared BladeCenter resource problems" on page 66).
3. (Trained service technician only) Replace the system board assembly.
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Chapter 2. Diagnostics