User's Manual Part 1

Chapter 3 — Maintaining the Printer
22 6822 Series 80-Column Printer User’s Manual
3 Lift the ribbon cartridge to remove the ribbon from the printhead.
Make sure the ribbon does not catch or get sticky.
4 Lift the ribbon cartridge out of the printer.
Cleaning the Mask Spring
Check the mask spring behind the printhead.If the mask spring appears
to be in good condition, install a new ribbon cartridge. If the mask spring
is dirty, clean it as described below.
To clean the mask spring
1 Unlatch the printhead locking tabs to release the printhead, lift the
printhead aside, then lift up the paper bail. Do not detach the
printhead unit.
2 Remove the clear plastic paper guide that seats the mask spring, if
necessary. Use your fingernails to loosen the base of the paper guide,
then pull the paper guide straight up from the printer mechanism.
3 Remove the metal mask spring from the paper guide and clean with a
quality cleaner. Replace if damaged.
4 Insert the mask spring in the paper guide and install the paper guide
into the printer.
Never use a sharp object to clean between the printhead
and the platen (rubber roller). This can damage the mask
spring and printhead.