•
“The image is discolored” on page 45
Wrong characters appear on the screen
Symptom: Wrong characters appear on the screen.
Action: Have the computer serviced. For details, see “Lenovo Support Web site” on page 31.
The monitor works when you turn on the computer, but goes blank after some period
of computer inactivity
Symptom: The monitor works when you turn on the computer, but goes blank after some period of computer
inactivity.
Action: The computer is probably set for energy savings with the power-management feature. If the
power-management feature is enabled, disabling it or changing the settings might solve the problem.
If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see “Lenovo Support Web site” on page 31.
The monitor works when you turn on the computer, but goes blank when you start
some application programs
Symptom: The monitor works when you turn on the computer, but goes blank when you start some
application programs.
Actions:
• Ensure that the monitor signal cable is securely connected to the monitor and the monitor connector on
the computer. A loose cable can cause intermittent problems.
• Verify that the necessary device drivers for the application programs are installed. Refer to the
documentation for the affected application program to see if device drivers are required.
If these actions do not correct the problem, run the Lenovo Solution Center program. If you need technical
assistance, see “Lenovo Support Web site” on page 31.
The image appears to be flickering
Symptom: The image appears to be flickering.
Actions:
• The monitor might be operating in a low-refresh rate display mode. Set the monitor to the highest,
noninterlaced refresh rate supported by your monitor and the video controller in your computer.
Attention:
Using a resolution or refresh rate that is not supported by your monitor might damage it. Check
the documentation that comes with your monitor to verify the supported refresh rates.
• The monitor might be affected by interference from nearby equipment. Magnetic fields around other
devices, such as transformers, appliances, fluorescent lights, and other monitors might be causing the
problem. Move fluorescent desk lighting or any equipment that produces magnetic fields farther away
from the monitor. If this does not correct the problem, do the following:
1. Turn off the monitor. (Moving a color monitor while it is turned on might cause screen discoloration.)
2. Adjust the placement of the monitor and other devices so that they are at least 305 mm (12 inches)
apart.
3. Turn on the monitor.
• You can reset the refresh rate through your operating system Control Panel:
44
ThinkCentre Edge Hardware Maintenance Manual
Summary of Contents for 3569
Page 1: ...ThinkCentre Edge Hardware Maintenance Manual Machine Types 3569 3571 and 3574 ...
Page 2: ......
Page 3: ...ThinkCentre Edge Hardware Maintenance Manual Machine Types 3569 3571 and 3574 ...
Page 8: ...2 ThinkCentre Edge Hardware Maintenance Manual ...
Page 15: ...Chapter 2 Safety information 9 ...
Page 19: ...Chapter 2 Safety information 13 ...
Page 20: ...1 2 14 ThinkCentre Edge Hardware Maintenance Manual ...
Page 21: ...1 2 Chapter 2 Safety information 15 ...
Page 26: ...1 2 20 ThinkCentre Edge Hardware Maintenance Manual ...
Page 27: ...1 2 Chapter 2 Safety information 21 ...
Page 30: ...24 ThinkCentre Edge Hardware Maintenance Manual ...
Page 34: ...28 ThinkCentre Edge Hardware Maintenance Manual ...
Page 60: ...54 ThinkCentre Edge Hardware Maintenance Manual ...
Page 70: ...64 ThinkCentre Edge Hardware Maintenance Manual ...
Page 75: ...Figure 3 Locating major FRUs and CRUs Chapter 8 Locations 69 ...
Page 85: ...Figure 13 Reinstall the rubber on the foot stand Chapter 9 Replacing FRUs 79 ...
Page 127: ......