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Monitor problems
Some 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 Hardware Maintenance Manual 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.
The monitor works when you
turn on the server, but the
screen goes blank when you
start some application
programs.
50
ThinkServer RS110 Types 6435, 6436, 6437, and 6438: Installation Guide
Action
1. Make sure that the monitor cables are firmly connected.
2. Try using a different monitor on the server, or try testing the monitor on a
different server.
3. Run the diagnostic programs (see the Hardware Maintenance Manual ). 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. 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:
v The server is turned on. If there is no power to the server, see "Power
problems" on page 53.
v The monitor cables are connected correctly.
v The monitor is turned on and the brightness and contrast controls are
adjusted correctly.
v Only a single beep sounds 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, you must restart the server three times to reset the
configuration settings to the default configuration (the memory connector or
bank of connectors is enabled).
3. Make sure that the correct server is controlling the monitor, if applicable.
4. Make sure that damaged BIOS code is not affecting the video; see "Recovering
from BIOS update failure" in the Hardware Maintenance Manual .
5. See "Solving undetermined problems" in the Hardware Maintenance Manual .
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 application.
2. Run video diagnostics (see the Hardware Maintenance Manual ).
v If the server passes the video diagnostics, the video is good; see "Solving
undetermined problems" in the Hardware Maintenance Manual .
v (Trained service technician only) If the server fails the video diagnostics,
replace the system board.
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