Technical information

Troubleshooting
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DCS_Direct_Jet_1024UVHS_Maintenance_Troubleshooting_Guide_1.2.docx 36 | Page
Print quality and Ink Supply Problems
The printed image is faint or has gaps
Possible Cause Solution
1. The gap between the head and
substrate is too large
1. Press the down button until the Z axis sensor touches the substrate; release the
button when you hear a clicking noise and the stepper motor stops. The Print Head
Assembly goes up again automatically.
2. Nozzles are clogged 2. Run a nozzle check to confirm if ink is flowing. If output is faulty, perform a cleaning
operation. If it is still not correct, check the following:
• Ensure there is ink in the cartridge(s).
• When performing a cleaning cycle, observe the amount of ink in the caps of the
capping station. If there is very little ink in the caps, you may need to replace the
capping station. Look for instructions on this procedure later in this manual.
3. If printing on paper, the paper may
be damp, curled, or loaded printing
side down
3. Use only dry, flat paper securely loaded with the printing side up.
4. The ink is not compatible with the
substrate
5. Use only substrates to which the ink is able to bond.
The printed image has a halo or faded outline around the image
Possible Cause Solution
1. Static on plastic substrate
1. Wipe down the substrate lightly with an alcohol wipe.
The printed image has excessive debris, dots or lint in the image
Possible Cause Solution
1. Airborne dust settling on the
substrate
1. Ensure that the printer's cover is installed at all times during printing.
2. Airborne dust settling on the Media
table or Printer.
2. Remove with an absorbent cloth or blow out with compressed air.
3. Lint left over from paper towels or
"lint-free" cloths.
3. Use only lint-free micro-fiber cloths for wiping and glass cleaner or similar mild
cleaning agent.
Vertical banding is present in the printed image
Possible Cause Solution
1. The horizontal encoding film is dirty
1. Clean the encoding film with an IPA wipe from the printer’s cleaning kit.
The following has a criteria impact on consistent image location and/or pass to pass registration:
i. Encoder strip cleanliness
ii. Page size and printer size of job
iii. Table printer is placed on
iv. Motor speed
v. Invoke lead in smoothing in the printer options
vi. Parts in fixture or on table held tight
vii. Table clunking at end of path (motor speed too high)
viii. Power cycle the print engine for any weight change greater than 1 lb
ix. All mechanical parts of drive train are secure and tight
x. Table moves smoothly when moved by hand along linear motion guides