Maintenance; Cleaning; Print Head/Platen/Sensors - Oki LE840 Guide De L'utilisateur

4. MAINTENANCE

4. MAINTENANCE
WARNING!
1. Be sure to disconnect the
power cord before
performing maintenance.
Failure to do this may
cause an electric shock.
2. To avoid injury, be careful
not to pinch your fingers
while opening or closing
the cover and print head
block.
3. The print head becomes
hot immediately after
printing. Allow it to cool
before performing any
maintenance.
4. Do not pour water directly
onto the printer.
5. Do not touch any moving
parts, projection and the
edge of sheet metal.

4.1 Cleaning

4.1.1 Print Head/Platen/
Sensors
CAUTION!
1. Do not use any volatile
solvent including thinner
and benzene, as this may
cause discoloration to the
cover, print failure, or
breakdown of the printer.
2. Do not touch the Print
Head Element with bare
hands, as static may
damage the Print Head.
This chapter describes how to perform routine maintenance.
To ensure the continuous high quality operation of the printer, you should
perform a regular maintenance routine. For high usage it should be done
on a daily basis. For low usage it should be done on a weekly basis.
To maintain the printer performance and print quality, please clean the
printer regularly, or whenever the media or ribbon is replaced.
1. Turn off the power and unplug the printer.
2. Open the Top Cover.
3. Turn the Head Lever to the "FREE" position, and then release the
Ribbon Shaft Holder Plate.
4. Open the Print Head Block.
5. Remove the ribbon and media.
When cleaning the print head, be careful not to damage the print head
with hard objects like watches or rings.
Care must be taken not to allow
the metal or glass part of a watch
to touch the print head edge.
Since the print head element can be easily damaged by shock, please
treat it carefully and do not hit it with hard objects.
E4- 1
CAUTION!
Care must be taken not to allow a
metal object like a ring to touch
the print head edge.
4.1 Cleaning