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Print Engine Diagnostics
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57512L-004 110PAX4/R110PAX4 User Guide 6/29/11
FEED Self Test
Different types of media may require different darkness settings. This section contains a
simple but effective method for determining the ideal darkness for printing bar codes that are
within specifications.
During the FEED self test, labels are printed at different darkness settings at two different print
speeds. The relative darkness and the print speed are printed on each label. The bar codes on
these labels may be ANSI-graded to check print quality.
The darkness value starts at three settings lower than the print engine’s current darkness value
(relative darkness of –3) and increase until the darkness is three settings higher than the current
darkness value (relative darkness of +3).
The speed at which labels are printed during this print quality test depends on the dot density
of the printhead.
• 300 dpi print engines: 7 labels are printed at the 2 ips and 8 ips print speeds.
• 203 dpi print engines: 7 labels are printed at the 2 ips and 12 ips print speeds.
To perform a FEED self test, complete these steps:
1. Print a configuration label to show the print engine’s current settings.
2. Turn off (O) the print engine.
3. Press and hold FEED while turning on (I) the print engine. Hold FEED until the first
control panel light turns off.
The print engine prints a series of labels (Figure 29) at various speeds and at darkness
settings higher and lower than the darkness value shown on the configuration label.