HP Designjet 2800/3800cp Service Manual - Page 27

2 Reinstall the Ink Delivery System as follows: 1 Remove the four printheads from the carriage. On the front panel you will see the four squares representing the printheads flashing. 2 Clean the electrical contacts using the Ink Cleaner Part Number C6247A. 3 Reinstall all the printheads, one by one, checking on the front panel that the squares representing the reinstalled printheads are steady. D DO NOT INSERT THE NEXT PRINTHEAD UNTIL THE PRINTER HAS ACCEPTED THE CURRENT PRINTHEAD. D If, even after the electrical contacts have been cleaned, the printhead is not accepted REPLACE THE COMPLETE INK SYSTEM (Printhead/Head Cleaner/Ink Cartridge) for this color. D If, after inserting a NEW Ink System, the printhead is not accepted, the problem may be with the printer. Replace the Carriage Assembly ' 8-42. 4 If you have reinserted the four printheads and the printer has accepted them continue reinstalling the head cleaners. 5 Remove and reinstall the ink cartridge valves, one by one, checking on the front panel that the squares representing the reinstalled ink cartridge are steady. D If the ink cartridge is not accepted, REPLACE THE COMPLETE INK SYSTEM (Printhead/Head Cleaner/Ink Cartridge) for this color. D If, after reinserting the NEW Ink System, the ink cartridge is not accepted, the problem may be with the printer. Make sure that the Refill Assembly cable is not damaged and is correctly connected to the Interconnect PCA. If the cable is correctly connected and is not damaged then replace the Refill Assembly ' page 8-55. 3 If the problem is fixed, but it reappears frequently, contact a HP dealer for a replacement (the Ink System may be damaged.) Troubleshooting HP DesignJet CP Series Printers 1-15