HP 1050c Service Manual - Page 72

HP No.80 Ink Supplies Troubleshooting Reseat NOTE Faulty NOTE Wrong Model CAUTION The printhead has moved slightly and is not making good electrical contact with the carriage assembly. Reseat the printhead into the correct position. This situation must be corrected before the printer will operate. 1 Reseat the Printhead in the correct position. 2 Clean the Carriage and Printhead flex circuits using the Carriage Interconnect Wiper ⇒ Page 3-18. 3 Replace the Printhead. 4 Perform the Electronic Systems Test ⇒ Page 4-5. If all 4 Printheads have the Status "Reseat", it is possible that the Carriage Assembly is faulty. The smartchip on the printhead is not correct or the digital communications between the Carriage and the Printhead is incorrect. This situation must be corrected before the printer will operate. 1 Reseat the Printhead. 2 Clean the Carriage and Printhead flex circuits using the Carriage Interconnect Wiper ⇒ Page 3-18. 3 Replace the Printhead. 4 Perform the Electronic Systems Test ⇒ Page 4-5. If all 4 Printheads have the Status "Faulty", it is possible that the Carriage Assembly is faulty. The printer does not recognize the printhead or printhead cleaner that you have inserted into the printer. You will have to remove it before the printer can continue. If the Printing Printheads are installed in the carriage during the priming process, they will be rejected and the front panel will show the "Wrong Model" message. Unknown The Printhead installed is not approved and must be replaced by a genuine HP No.80 Printhead. 3-16 HP DesignJets 1050C and 1055CM Printers Service Manual