Lenovo ThinkServer RD120 User Manual download pdf (Page 71)

Monitor 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.

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 Action

Testing the monitor

1. Make sure that the monitor cables are firmly connected.

2. Try using the other video port.

3. Try using a different monitor on the server, or try testing the monitor on a

different server.

4. Run the diagnostic programs (see the Hardware Maintenance Manual). If the

monitor passes the diagnostic programs, the problem might be a video device

driver.

5. Reseat the Remote Supervisor Adapter II SlimLine (if one is present).

6. Replace the following components one at a time, in the order shown, restarting

the server each time:

a. Remote Supervisor Adapter II SlimLine (if one is present)

b. (Trained service technician only) 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. Make sure that:

v The server is turned on. If there is no power to the server, see “Power

problems” on page 59.

v The monitor cables are connected correctly.

v The monitor is turned on and the brightness and contrast controls are

adjusted correctly.

v 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, you must restart the server three times to reset the

configuration settings to the default configuration (the memory connector or

bank of connectors 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 the

Hardware Maintenance Manual for information about recovering from a BIOS

failure.

5. See the Hardware Maintenance Manual for information about solving

undetermined problems.

Chapter 5. Solving problems 57

Lenovo ThinkServer RD120 User Manual Page 71

Comments to this Manuals

Lenovo ThinkServer RD120 User Manual Page 71

Comments to this Manuals

Related products and manuals for Computer hardware Lenovo ThinkServer RD120