Wrong Printer Is Attached; Updating The Printer Software; Bidirectional Communication Is Not Established; Experiencing Poor Quality Or Incorrect Output - Lexmark 7550 Series User Manual

Is the original document loaded correctly on the scanner glass?
• Make sure the original document is placed in the upper left corner of the scanner glass.
• Place the item you want to copy facedown on the scanner glass.
• Make sure the upper left corner of the front of the item lines up with the arrows in the corner of the scanner glass.
Wrong printer is attached
The printer attached to the computer is not the correct printer. See the setup documentation for help attaching the
printer.
Updating the printer software
The printer software needs to be updated to run properly.
1 Start Windows.
2 When the desktop appears, insert the software CD for Windows.
The installation screen appears.
3 Click Install.
4 When the Existing Printer Driver Found dialog box appears, select Update the existing driver software.
Bidirectional communication is not established
The printer and computer may not be able to exchange data.
These are possible solutions. Try one or more of the following:
Check the USB connection
1 Check that the USB cable is connected to the computer. The USB port on the back of the computer is marked
by the _ USB symbol. Plug the long, flat end of the USB cable into this port.
2 Make sure that the smaller, more square end of the USB cable is plugged into the back of the printer.
3 Check that the USB cable is not damaged and that the @ light is on.
Make sure the printer is receiving power
If the _ button is not lit, the printer may not be receiving power.
• Plug the printer into a different outlet.
• If the printer is plugged into a surge protector, unplug the printer, and plug it directly into an electrical outlet.
Make sure the external print server is working
If the printer is connected to an external print server, the problem may be with this print server. Check to make sure
the device is working properly and that the printer is connected to the network.
Experiencing poor quality or incorrect output
See the topic that best describes the problem.
° Print is too dark or smudged
• Vertical straight lines are not smooth
• White lines appear in graphics or solid black areas
• Characters are missing or unexpected
• Colors on printout are faded or differ from colors on the screen
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