Eden260V User Guide
6 Operating and Maintaining the Printer
DOC-32020 Rev. F
6-42
Replacing Print Heads
The condition of the print heads directly affects the quality of printed models. You
may need to replace a print head if one or more of the following symptoms
occurs:
• There are noticeable grooves in the surface of printed models.
• Visual inspection of the head reveals that its surface is damaged—peeling or
bubbles in the nozzle area.
• The pattern test or the weight test reveals that more than four consecutive
nozzles—or a total of more than 12 nozzles—are not functioning.
• The Head Calibration Utility indicates that a head cannot be calibrated for
acceptable printing (see " Calibrating Print Heads" on the previous page).
• The printer interface displays a warning or malfunction message relating to a
print head—
❒
Head Heater temperature timeout
❒
Head Heater thermistor open
❒
Head Heater thermistor short
Replace print heads only after attempting all other means for improving print
quality (see "Improving Print Quality" on page 6-31) and after consulting with
an authorized service engineer.
A wizard guides you through the procedure of replacing a print head, and adjusts
printer components to enable you to perform it. Only replace a print head with the
aid of the wizard. The entire procedure takes 75—90 minutes, and consists of the
following phases:
A. Identifying the head(s) needing replacement.
This is usually done during the head-calibration procedure. Otherwise,
evidence of physical damage to the head surface or a malfunction message
indicates which head needs replacing.
B. Preparing the print block for head replacement.
This is done automatically when you run the Head Replacement wizard.
C. Removing the defective print head.
D. Installing a new print head.
E. Performing head calibration.
F. Performing head alignment.
To replace a print head:
1. Prepare—
❒
replacement print head(s)
❒
90% isopropanol (IPA—isopropyl alcohol) or ethanol (ethyl alcohol)
