Printronix t8000 Administrator's Manual page 252

Symptom
Prints strange characters
instead of the correct label
format.
•
Start of image is printed
an erroneous distance
from the top-of-form.
•
The printer starts to print
one label and then
another, all within the
same physical label.
•
Loss of one or more
serialized labels within a
print job.
•
Start of image is printed
in the middle of the gap.
•
The top part of the image
is lost when printing with
Head First orientation
selected.
252
Table 12. Printer Problems and Solutions
1. If the printer serial interface is being used, check that the
printer serial baud rate setting matches the baud rate of
the host computer. Reset the printer via software, or turn
the printer off and then on.
2. Check if the printer serial host interface is set for 8 data
bits but the transmitting device is set for 7 data bits (or
vice-versa). Check the current setting by viewing it on the
LCD, and use the Host IO > Serial section to adjust the
settings, if necessary.
3. If the printer parallel interface is being used, make sure the
parallel interface terminating resistors are correct for the
host computer drivers.
1. Make sure the Media > Image > Label Length value
matches the actual physical length of the label installed
and the run on Auto Calibrate (see Running Auto Calibrate
page 41).
These symptoms could be caused by:
•
Severely curled labels near the end of a media roll
•
Media sensor triggering off of a dark, preprinted image
on the label
•
Multiple gaps within the physical label.
2. Set Media Image > Clip Page to Disable.
3. Run a Media Profile (see Running Media Profile page 42).
4. If the Media Profile printout shows that preprinted images
has an amplitude approaching the Gap/Mark Threshold
level, position the lower media sensor to avoid the image
or increase the Threshold Range percent value in the
Sensors > Calibrate section. Run Auto Calibrate again and
Media Profile to verify there is an improvement.
1. Go to the Sensors > Calibrate section.
2. Set Gap Windowing to Enable.
3. Set Gap Length to equal the physical gap length of the
media installed. The range is 0.05 to 1.00 inches.
The likely cause of these symptoms is that Media Image >Clip
Page = Enable and a cross-perforation, radical fold or flaw in
the liner has caused the media sensor to detect this as the
leading edge (TOF) of the new label or end of label (EOF), or
both.
Solution/Explanation