IJ4000 Impulse Jet
Section 4: Troubleshooting
5765-018 Operations Manual Rev J
Page 40
Impulse Jet Print Head:
System Symptom
Possible Cause
Operational Test Method
ACS Cycle will not operate
No S
MART
-IDS to Controller Cable
connection. No S
MART
-IDS power.
No Controller to Print Head connec-
tion.
Inspect S
MART
-IDS communication cable and ensure connection
to Interface Board. See “Step 6: Electrical Cable Connections” on
page 16.
Ink overfills and drips after ACS
Cycle
Vacuum Tubing & Connections
Confirm all tubing connections are tight between S
MART
-IDS and
every print head. Confirm that the waste bottle is tight and not
cross-threaded. Confirm that the in-line vacuum filter is tight. Do
not over-tighten.
Print Head will not heat, “At Tem-
perature” LED never turns on
Print Engine or PC Board
Return print head to manufacturer.
Missing print.
Air in Print Head
Air in the Print Head is the most likely cause of missing channels.
Refer to “Missing Print” on page 23 for bleeding procedures.
Ink Reservoir in Print Head does not
refill, or no ink pumps out during an
ACS or Prime Cycle. (384E)
Solenoids or PC Board
Return print head to manufacturer.
Print Head will not print. (384E)
PC Board
Return print head to manufacturer.
Ink Reservoir in Print Head does not
refill, or no ink pumps out during an
ACS or Prime cycle. (768E)
Solenoids
Remove power from the Print Head. Disconnect solenoid cable
harness. Purge, intake, and return solenoids are pinned on 1-2,
3-4, and 5-6, respectively. The Intake Valve controls ink into the
Reservoir, and the Purge Valve controls ACS and Prime. Check
the respective valve pins for resistance. An open coil should be
replaced.