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50 Section 7: Maintenance
4250/4225 Card Printer UserÕs Manual
IMPORTANT!
1. Never use a sharp tool or abrasive object of any kind to clean the Printhead. You will
damage the Printhead!
2. Watches, rings, bracelets, and other jewelry can damage the Printhead if accidentally
bumped against it. For best results, remove such items before touching any internal
components of printer.
3. As with any electronic device, internal components of the printer, such as the
Printhead, may be damaged if exposed to static electrical discharges. To avoid potential
damage, always wear an appropriate personal grounding device, such as a wrist strap
(with integral resistor) connected to an ESD ground. Or, at a minimum, make positive
contact with the bare metal chassis of the printer with your hand prior to touching any
internal electrical components.
B. STANDARD PRINTHEAD CLEANING
This procedure should be performed if you notice a streak on the card where color
was not transferred. This procedure should also be performed during every ribbon
change or after every 250 prints in order to maintain consistent print quality.
1. Open the printerÕs Top Cover by pressing the Cover Release Button.
2. If you observe dust and/or other particles laying on the top surface of the
ribbon, manually roll it up into the take-up roll. Occasionally, dust may settle
on the top surface of the ribbon and cause print quality problems.
3. Use a Printhead Cleaning Pen from the Printer Cleaning Kit or a soft, lint-free
cloth slightly moistened with isopropyl alcohol and firmly wipe back and forth
across the surface of the Printhead. If using a cloth, be extremely careful not to
use too much alcohol. It must not be allowed to drip into the printer!
Printhead
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