2. In this session, you will learn to:
Troubleshoot display devices
Maintain and troubleshoot input
devices
Troubleshoot adapter cards
Troubleshoot multimedia devices
Objectives
3. The common display device issues are:
1. Monitor is dark or power indicator light is not lit.
Troubleshooting Display Devices
Power problem
4. 2. No image displayed on the monitor.
Troubleshooting Display Devices
Checked
Disconnected
5. 3. Monitor flickers or is distorted.
Troubleshooting Display Devices
Incorrect display adapter may be used.
Safe mode and verify through Device Manager
Refresh rate may be
too low or too high
Degauss(demagnetize) the monitor
7. 4.Application problem
Screen goes blank, flickers, or acts bizarrely when a specific
application is active.
Troubleshooting Display Devices
You may need to change the
resolution
or color depth from display
settings
8. 5. Monitor is on, but display is all white.
Troubleshooting Display Devices
Multiple bent or broken pins
9. 6. Monitor crackles or whines.
Crackles- making sharp sound like burning.
Whines- annoying crying voice.
Troubleshooting Display Devices
Move the monitor away
from sources of EMI
10. 8.Physical damage, internal or external.
Troubleshooting Display Devices
It is generally more economical
and certainly safer to replace
the device rather than attempting repair.
11. Before maintaining and troubleshooting
input devices, you need to understand the
following:
Common input device issues
Input device maintenance techniques
Maintaining and Troubleshooting
Input Devices
18. 7. New keyboard won’t plug into the same port as the old
keyboard.
19. The pointing device issues are:
1. Mouse pointer jumps around on the screen.
20. 2. Wireless mouse is in use and mouse pointer is
jumping around or not moving.
21. 3. Mouse is not working.
Mouse connected after
the computer was
started.
22. The various techniques for input device maintenance
are:
Occasionally disconnect keyboards and mice and gently
wipe them clean.
23. The various techniques for input device maintenance
are:
Clean loose debris from inside a trackball or mouse.
24. The various techniques for input device maintenance
are:
Gently shake an upside-down keyboard to remove
debris.
25. The various techniques for input device maintenance
are:
Provide a clean, flat mouse pad or other mousing
surface.
26. The various techniques for input device maintenance
are:
To avoid spills that can damage input devices, keep food
and liquids away from computer systems.
27. The various techniques for input device maintenance
are:
Replace cordless device batteries regularly.
28. The common adapter card issues are:
1. Adapter seems to work fine until you replace the
system case.
Troubleshooting Adapter Cards
29. 2. Card works fine in another slot, but not in particular slot.
30. 3. Card tests fine and slot tests fine, but services are
unavailable.
Connected the Cable needed
31. 4. Services provided by the adapter or a device connected
to the adapter work intermittently.
Correct driver
32. The common multimedia device issues are:
1. No sound when speakers worked fine before.
Troubleshooting Multimedia Devices
33. 2. No sound when speakers never worked.
Drivers are not installed or are corrupt
35. Summary
In this session, you learned that:
Following are the common display device issues:
Power issue.
Connection or settings issue.
Driver, magnetism, or interference issue.
Color quality or resolution issue.
Following are the input device maintenance techniques:
Clean loose debris from inside a trackball or mouse.
Gently shake an upside-down keyboard to remove debris.
Following are the common adapter card issues:
Card will not work in one slot.
Card and slot test fine, but services unavailable.