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Stratasys J850/J835 User Guide
The entire print-head replacement procedure takes about 45 minutes, and
consists of the following phases:
A. Identifying the head(s) needing replacement.
B. Preparing the print block for head replacement.
C.
D.
E. Optimizing the print heads (done automatically by the wizard).
F.
To replace a print head:
1. Prepare—
2. Start the Head Optimization wizard from the Options menu (see the figure
3. In the opening wizard screen, click Next to begin.
4. Read the conditions, select I Agree and click Next.
DOC-18001 Rev. N
This is normally done by the Head Optimization wizard. Otherwise,
evidence of physical damage to the head surface or a malfunction message
indicates which head needs replacing.
This is done automatically when you run the wizard.
Removing the defective print
Installing a new print
head.
Performing head
alignment.
❒ replacement print head(s)
❒ 90% isopropanol (IPA—isopropyl alcohol) or ethanol (ethyl alcohol)
❒ disposable cleaning gloves (use clean, powder-free gloves)
❒ lint-free cleaning cloths
❒ a mirror
❒ a 4-mm hex (Allen) key
❒ the scale supplied for use in the Head Optimization wizard (Weight
Test)
❒ the Missing Nozzles ruler
Important: Make sure that you have these items and that the scale is
calibrated and at least partially charged before continuing.
on page 4-68).
The Wizard Conditions screen appears.
4 Operating and Maintaining the Printer
head.
4-77
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