Zebra S4M - Manual (Page 98)

Troubleshooting
Print Quality Problems 92
13290L-001 Rev. A S4M User Guide 10/21/05
Vertical drift in
top-of-form position A plus or minus 4 to 6 dot row
(approximately 0.5 mm)
vertical drift is acceptable due
to different tolerances of
mechanical parts and printer
modes. 1. Calibrate the printer.
2. Adjust the label top position setting. See
Adjust Label Top Position on page 61 .
The printer is out of calibration. Recalibrate the printer.
The platen roller is dirty. See Clean the Printhead and Platen Roller
on page 79 .
Vertical image or
label drift The printer is using
noncontinuous labels but is
configured in continuous mode. Configure the printer for non-continuous and run
calibration routine, if necessary.
Incorrectly positioned media
sensor. Ensure the media sensor is properly positioned to
read a single/consistent interlabel gap.
Improperly calibrated media
sensor. See Calibrate Media and Ribbon Sensors
on page 72 .
The platen roller is dirty. Clean the platen roller. See Clean the Printhead
and Platen Roller on page 79 .
Improper printhead pressure
settings (toggles). Adjust the printhead pressure to ensure proper
functionality.
Improperly loaded ribbon or
media. Verify that the printer is loaded properly.
Incompatible media. Ensure that the interlabel gaps or notches are 2 to
4 mm and consistently placed. Media must not
exceed minimum specifications for mode of
operation.
The bar code printed
on a label does not
scan. The bar code is not within
specifications because the print
is too light or too dark. Perform the FEED Self Test on page 100 . Adjust
the darkness or print speed settings as necessary.
Not enough blank space around
the bar code. Leave at least 1/8 in. (3.2 mm) between the bar
code and other printed areas on the label and
between the bar code and the edge of the label.
Table 16 • Print Quality Problems (Continued)
Problem Possible Cause Recommended Solution