Lexmark C792/X792 Color Product Study Guide Rev 2.1
For Training Purposes Only 6/24/2011
39
Receiving Fax Machine at Fault
Problem Description:
• Problems with print quality at the receiving fax, such as corrupt images, lines in the image,
top/bottom cut off.
• When you test the Receiving Fax by printing the Self Test pages you can reproduce the
print quality problem.
Most Likely Cause:
• Low supplies, dirt or contamination in the printer, hardware failure.
Resolution:
• Check the supply levels by pressing the
button on the operator panel or printing a
Menu Settings page from the Reports menu.
• Check the printer for accumulation of dust or debris.
• Follow standard troubleshooting procedures for print quality problems.
Phone Line at Fault
Problem Description:
• Problems with print quality at the receiving fax, such as corrupt images, lines in the image,
white horizontal lines, missing rows or top/bottom cut off.
• When you test the Sending Fax and Receiving Fax you cannot reproduce the print quality
problem. The problem only occurs during faxing.
Most Likely Cause:
• Noise in the phone line, incoming call (call waiting), incorrect setup of dial type, line type,
reception mode or electrical interference.
Resolution:
• Check/setup the dial type, line type and reception mode.
• If the phone line is part of a DSL connection, check to see if a Splitter (Line Filter) is installed
or replace the Splitter.
• Disable Call Waiting if it enabled.
• Check the telephone line for static or other noises.
• Remove any electronic equipment (i.e. televisions, microwaves, etc.), motorized devices or
wireless/broadcasting equipment that may be located near the fax machine. Electrical
interference from the equipment may degrade the telephone line condition.
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