Monitor Or Video Problems - IBM 4348 Installation Manual

Monitor or 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.
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See the parts listing in the Problem Determination and Service Guide 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.
Symptom
Testing the monitor
The screen is blank.
Only the cursor appears.
The monitor works when you
turn on the server, but the
screen goes blank when you
start some application
programs.
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System x3100 Type 4348: Installation Guide
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 service technician only) Replace the system board.
1. Make sure that:
v The server is turned on. If there is no power to the server, see "Power
problems" in the Problem Determination and Service Guide.
v The monitor cables are connected correctly.
v The monitor is turned on and the brightness and contrast controls are
adjusted correctly.
v Other than the single beep, which indicates successful completion of POST,
no beep codes sound when the server is turned on.
Important: In some memory configurations, the 3-3-3 beep code might sound
during POST, followed by a blank monitor screen. If this occurs and the Boot
Fail Count option in the Start Options of the Configuration/Setup Utility
program is enabled (its default setting), you must restart the server three times
to reset the configuration settings to the default configuration (the memory
connector or bank of connectors enabled).
2. Make sure that the correct server is controlling the monitor, if applicable.
3. Make sure that damaged BIOS code is not affecting the video; see "Recovering
from a BIOS update failure" on page 61.
4. See "Solving undetermined problems" in the Problem Determination and
Service Guide.
See "Solving undetermined problems" in the Problem Determination and Service
Guide.
1. Make sure that:
v The application program is not setting a display mode that is higher than the
capability of the monitor.
v You installed the necessary device drivers for the applications.
2. Run video diagnostics (see "Running the diagnostic programs" in the Problem
Determination and Service Guide.
v If the server passes the video diagnostics the video is good; see "Solving
undetermined problems" in the Problem Determination and Service Guide.
v (Trained service technician only ) If the server fails the video diagnostics,
reseat the system board.
v (Trained service technician only) Replace the system board.