Oki MICROLINE 621 Users Guide - Page 83

PROBLEM, CAUSE, SOLUTION, Replace the ribbon cartridge with a new one.

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PROBLEM Printing slows down CAUSE SOLUTION Print direction changes suddenly to unidirectional. Print Error warning When the printhead overheats, the printer automatically starts unidirectional split printing. The printer will return to its original operation when the printhead temperature drops sufficiently. The print carriage does not operate. Print blurring There is contamination on the carriage shaft. Clean any paper dust and contamination from the carriage with a dry cloth. The characters are too pale to display properly on the paper. The Paper Thickness lever position does not match the paper. The printer is set to print at high speed. Correct the Paper Thickness lever setting. Set the speed to normal. The ribbon has reached its end-of-life. Replace the ribbon with a new one. The ribbon cartridge is not installed correctly. The ribbon has been wound incorrectly. Reinstall the ribbon cartridge correctly. Replace the ribbon cartridge with a new one. The ribbon is not transferring properly. Replace the ribbon cartridge with a new one. A line of print is missing. Broken wire pins. The printout differs from the screen display Contact your dealer. Printout contains completely different characters or symbols. Incorrect print setup for the user's application. The application control codes for the previous print operation are still enabled. Reselect print setup for the applications according to priority. Initialize the printer. ML620/ML621 User's Guide 83

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ML620/ML621 User’s Guide
·±
PROBLEM
CAUSE
SOLUTION
Printing slows down
Print direction changes
suddenly to unidirectional.
When the printhead overheats, the printer
automatically starts unidirectional split
printing.
The printer will return to its original operation
when the printhead temperature drops
sufficiently.
Print Error warning
The print carriage does not
operate.
There is contamination on the carriage
shaft.
Clean any paper dust and contamination from
the carriage with a dry cloth.
Print blurring
The characters are too pale to
display properly on the paper.
The Paper Thickness lever position does not
match the paper.
Correct the Paper Thickness lever setting.
The printer is set to print at high speed.
Set the speed to normal.
The ribbon has reached its end-of-life.
Replace the ribbon with a new one.
The ribbon cartridge is not installed
correctly.
Reinstall the ribbon cartridge correctly.
The ribbon has been wound incorrectly.
Replace the ribbon cartridge with a new one.
The ribbon is not transferring properly.
Replace the ribbon cartridge with a new one.
A line of print is missing.
Broken wire pins.
Contact your dealer.
The printout differs from the screen display
Printout contains completely
different characters or
symbols.
Incorrect print setup for the user’s
application.
Reselect print setup for the applications
according to priority.
The application control codes for the
previous print operation are still enabled.
Initialize the printer.