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long, unshielded, or
defective.
Paper tray is empty. Fill the paper tray with
paper and set the
printer to on line.
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Printer prints Correct printer drivers Refer to the printer
garbled are not installed. documentation to Install
information. the correct printer
driver.
Cable is not connected Ensure that the printer
properly. signal cable is properly
connected to the
computer.
Cable is defective. Replace the printer
cable and retest.
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Solving Screen Problems
This section lists some common causes and solutions for computer display
and external monitor problems.
IMPORTANT: Verify that the display jumpers on the processor board are set
properly for the display before proceeding with any
troubleshooting.
You can perform a monitor self-test on an external VGA color or monochrome
monitor by disconnecting the monitor from the computer. To do so, complete
the following steps:
1. Turn off the monitor.
2. Turn off the computer.
3. Disconnect the monitor signal cable from the computer.
4. Turn on the monitor and allow it to warm up for one minute.
The screen should be white. A narrow black border may also appear on
the left and right sides of the display. Either of these displays
indicates that the monitor is working properly.
Table 2-30. Solving Screen Problems
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Problem Probable Cause Solution(s)
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Characters are dim. The brightness or Adjust the control(s) on
contrast (if applicable) the right side of the
control is not set computer display.
properly.
Computer screen is in Tilt the display or move