IBM 8835 - Eserver 325 - 1 GB RAM, Maintenance And Troubleshooting Manual

Page: 91 / 164

Note: See “System” on page 94 to determine which components should be replaced by a field service technician.
Microprocessor problems
Symptom FRU/action
The server emits a continuous
tone during POST. (The startup
(boot) microprocessor is not
working properly.)
1. Verify that the startup microprocessor is seated properly.
2. Startup microprocessor.
Note: See “System” on page 94 to determine which components should be replaced by a field service technician.
Monitor problems
Symptom FRU/action
Testing the monitor.
v
See the information that comes with the monitor for adjusting and testing
instructions. (Some IBM monitors have their own self-tests.)
The screen is blank.
1. Verify that:
v The server power cord is plugged into the server and a working electrical
outlet.
v The monitor cables are connected properly.
v
The monitor is turned on and the Brightness and Contrast controls are
adjusted correctly.
v If the servers are C2T chained together, verify that:
– The C2T chain cables are securely connected to the servers.
– The C2T breakout cable is connected properly.
– A server that is turned on is selected.
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 server three
times to force the system BIOS to reset the CMOS values to the default
configuration (memory connector or bank of connectors enabled).
2. If you have verified these items and the screen remains blank, replace:
a. Monitor
b. Video adapter, if installed
c. System board
Only the cursor appears.
v
See “Undetermined problems” on page 91.
The monitor works when you
turn on the server but goes
blank when you start some
application programs.
1. Verify that:
v The application program is not setting a display mode higher than the
capability of the monitor.
v
The primary monitor cable is connected to the C2T device breakout cable.
v
You installed the necessary device drivers for the applications.
2. If you have verified these items and the screen remains blank, replace the
monitor.
Chapter 7. Symptom-to-FRU index
81