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Routine Maintenance
Cleaning Schedule and Procedures
132
P1066582-002 ZT400 Series™ User Guide 4/8/14
Clean the Printhead and Platen Roller
Inconsistent print quality, such as voids in the bar code or graphics, may indicate a dirty
printhead. For the recommended cleaning schedule, see Table 1 on page 130.
To clean the printhead and platen roller, complete these steps:
1. Raise the media door.
Caution • While performing any tasks near an open printhead, remove all rings, watches,
hanging necklaces, identification badges, or other metallic objects that could touch the
printhead. You are not required to turn off the printer power when working near an open
printhead, but Zebra recommends it as a precaution. If you turn off the power, you will lose
all temporary settings, such as label formats, and you must reload them before you resume
printing.
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Note • For printers with a peel assembly, keep the peel assembly closed while cleaning the
platen roller to reduce the risk of bending the tear-off/peel-off bar.
Caution • The printhead may be hot and could cause severe burns. Allow the printhead
to cool.
Caution • Before touching the printhead assembly, discharge any built-up static electricity
by touching the metal printer frame or by using an antistatic wriststrap and mat.