Dover markem-imaje 5200 Service Manual page 94

SECTION 5 Troubleshooting
Symptom
Smudged / blurred
print (continued)
Print is stretched,
condensed, or tilted
Missing jets / jets drop
5–4
Possible Cause / Problem
Product contacting printhead
Image contacting guide rail
Airflow near printhead
Encoder line speed mismatch
Encoder line speed mismatch
Model 5200/5400SC with tilted
printhead
Contamination
out
Incorrect low vacuum
Incorrect high vacuum
No ink in the printhead
Electrostatic Discharge (ESD)
Vibration or mechanical shock
Auto Purge is enabled
Auto Purge with down jetting
orientation
Printing too soon after Auto
Purge
Reference / Action
IN, 2, Mounting the Printhead
Ink can build up on the front of
the printhead. If a product
passes closely in front of the
printhead, the liquid ink can
transfer to the product,
distorting the printed image.
IN, 2, Mounting the Printhead
When a guide rail rubs on a
printed image, small amounts
of ink may be transferred. In
time, the ink build up will
smudge the printed image
IN, 2, Mounting the Printhead
Airflow in the vicinity of the
printhead may cause a
redirection of the ink droplets,
blurring the printed image
IN, 5, Encoder Line Speed
SE, 4, Print Station; Encoder
IN, 5, Encoder Line Speed
Use external encoder
SE, 3, Daily Cleaning of the
Printhead
IN, 2, Connecting Umbilical
Lines to the Printhead
IN, 3, Printhead Vacuum
Settings
SE, 4, VPC 1-2 and 3-4
SE, 4, VPC 1-2 and 3-4
SE, 4, Ink System; Printhead
Ink Level
IN, 2, Electrical
IN, 5, Not Printing
IN, 5, Print Quality
IN, 3, Auto Purge Frequency
SE, 3, Auto Purge Spacing
Guidelines
SE, 3, Auto Purge Spacing
Guidelines
0855855eng 6/08