IBM IntelliStation M Pro User Manual page 72

Table 3. Troubleshooting charts (continued)
Device
Intermittent problems
A problem occurs only
occasionally and is difficult to
detect.
Keyboard, mouse, or
pointing-device
All or some keys on the
keyboard do not work.
The mouse or pointing device
does not work.
Memory
The amount of memory
detected is less than the amount
of memory installed.
Monitor
Testing the monitor.
The screen is blank.
Only the cursor appears.
The monitor works when you
turn on the computer, but goes
blank when you start some
application programs.
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IntelliStation M Pro: User Guide
Suggested action
Verify that:
1. All cables and cords are connected securely to the rear of the computer and
attached options.
2. When the system is turned on, air is flowing from the rear of the computer at
the fan grille. If there is no air flow, the fan is not working. This causes the
computer to overheat and shut down.
3. Ensure that the SCSI bus and devices are configured correctly and that the last
external device in each SCSI chain is terminated correctly.
If the problem persists, call for service.
1. Make sure that the keyboard cable is properly connected to the computer.
2. Make sure that the computer and the monitor are turned on.
3. Try using another keyboard.
If the problem persists, call for service.
1. Verify that the mouse or pointing-device cable is securely connected and the
device drivers are installed correctly.
2. Try using another mouse or pointing device.
If the problem persists, call for service.
Verify that:
1. The memory modules are seated properly.
2. You have installed the correct type of memory.
3. All installed RIMMs are enabled. The computer might have automatically
disabled a RIMM bank when it detected a problem.
If the problem persists, call for service.
Some IBM monitors have their own self-tests. If you suspect a problem with your
monitor, refer to the information that comes with the monitor for adjusting and
testing instructions.
If the problem persists, call for service.
Verify that:
1. The computer power cord is plugged into the computer and a working
electrical outlet.
2. The monitor cables are connected properly.
3. The monitor is turned on and the brightness and contrast controls are adjusted
correctly.
If the problem persists, call for service.
Call for service.
Verify that:
1. The primary monitor cable is connected to the video port.
2. You installed the necessary device drivers for the applications.
If the problem persists, call for service.