IJ4000 Impulse Jet
Section 4: Troubleshooting
5765-018 Operations Manual Rev J
Page 46
Print Head Determination and Actions
If following the troubleshooting flow chart has determined that a print head is causing the Ink Flow fault, then several steps are needed:
1. Determine which print head is at fault (see below).
2. Replace (repair) the print head.
The majority of print head repair should take place at the factory by qualified technicians. The best support plan for customers is to use the ITW
AMP or PEP support programs if in the event of needing a print head replacement.
To determine which print head is at fault on systems with more than one print head, use these steps:
1. Power down the system by toggling off the power switch at the Smart IDS.
2. Disconnect the print head cables from all print heads.
3. Disconnect the Ink supply tubing from each print head.
4. Go to the first print head, reconnect the print head cable.
a. Make sure that the print head cable connects directly to the Smart IDS (Interface Card/Task Board).
b. 384 print heads that were “daisy chained” may require switching cables to make a direct connection.
5. Connect the Ink supply tubing.
6. Power on the Smart IDS and observe function of the Smart IDS and its pump.
a. The print head reservoir should refill in 2 seconds, at which time the pump should stop, and the Smart IDS indicator beacon should dis-
play green. This indicates that the print head is in good condition.
b. If the pump runs until the Smart IDS indicator beacon displays fast-flash red and then shuts off, this indicates that the print head has an
internal issue and should be replaced.
7. Power down the system, and disconnect the print head cable and Ink supply tubing.
8. Repeat steps 4 through 7 for the remaining print heads in a logical procession.
