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102 Intermec EasyCoder PF4i Compact Industrial—User’s Guide (Fingerprint)
Chapter 11—Maintenance
Cleaning the Media Guides
Both parts of the label stop sensor, which controls the media feed, are
covered by plastic guides. The guides are transparent to allow the light to
pass between the two parts of the label stop sensor. These areas (indicated
by a shade of gray in illustration #2 below) must be kept clean from dust,
stuck labels, and adhesive residue.
If the printer starts to feed out labels in an unexpected way, raise the
upper guide as described below and check for any object that may block
the beam of light (dust, stuck labels, adhesive residue, etc.). If necessary,
clean the guides using a cleaning card or a soft cloth soaked with iso-
propyl alcohol. Do not use any other type of chemical. Be careful not to
scratch the guides.
Isopropyl alcohol [(CH
3
)
2
CHOH; CAS 67-63-0] is a highly
fl ammable, moderately toxic, and mildly irritating sub-
stance.
Lift the inner part of the upper guide
and pull it outwards, disengaging it
from the lower guide. Take care not to
damage the cable.
Tilt the upper guide upwards and clean
the areas marked with gray. After
cleaning, re-assemble in reverse order.