Memory Problems; Microprocessor Problems; Monitor Problems - IBM 8836 - Eserver xSeries 306 Installation Manual

Memory problems

Symptom
The amount of system memory
displayed is less than the
amount of physical memory
installed.

Microprocessor problems

Symptom
The server emits a continuous
tone during POST.

Monitor problems

Some IBM monitors have their own self-tests. If you suspect a problem with your
monitor, see the information that comes with the monitor for instructions for testing
and adjusting the monitor. If you cannot diagnose the problem, call for service.
Symptom
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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IBM xSeries 306 Type 8836: Installation Guide
Suggested action
Make sure that:
v The DIMMs are seated properly.
v You have installed the correct type of memory.
v If you changed the memory, you updated the memory configuration in the
Configuration/Setup Utility program.
v All banks of memory are enabled. The server might have automatically disabled
a DIMM bank when it detected a problem, or a DIMM bank might have been
manually disabled.
Check the POST error log for error message 289:
v If the DIMM was disabled by a system-management interrupt (SMI), replace the
DIMM.
v If the DIMM was disabled by the user or by POST, run the Configuration/Setup
Utility program and enable the DIMM.
v If this error remains, replace the DIMM.
If the problem remains, call for service.
Suggested action
The startup (boot) microprocessor is not working correctly. Make sure that the
startup microprocessor is seated properly. If it is, replace the startup
microprocessor.
If the problem remains, call for service.
Suggested action
Make sure that:
v The server power cord is connected to the server and a working electrical outlet.
v The monitor cables are connected correctly.
v The monitor is turned on and the brightness and contrast controls are adjusted
correctly.
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 feature in the Start Options of the Configuration/Setup Utility program is
enabled (its default setting), you must restart the server three times to force the
BIOS to reset the configuration settings to the default configuration (the memory
connector or bank of connectors enabled).
If the problem remains, call for service.
Call for service.
Make sure that:
v The primary monitor cable is connected to the C2T breakout cable.
v You have installed the necessary device drivers for the application programs.
If the problem remains, call for service.