HP Designjet 4000 Service Manual - Page 41

System Error Codes System Error: 27:03 Problem Description: An error has occurred in Printhead detection. Corrective Action: Try the following: „ Switch the Power OFF from the back of the Printer and disconnect the Power cord. Reconnect the power cord and power On the Printer. „ Remove the Printheads from the Carriage and reinsert them. „ Replace the Printheads. „ Replace the Carriage Flex Cables ⇒ Page 8-51. System Error: 27:14 Problem Description: A wrong Printhead has been detected. Corrective Action: Try the following: „ Remove the Printheads and check that they are the correct ones for this Printer. „ Check that the Printer has the latest Firmware version. If not, update the Firmware to the latest version. „ Replace the Printheads. System Error: 29.0:01 Problem Description: Printhead Cleaner not inserted correctly in slot 1. Corrective Action: Try the following: „ Open the Printhead Cleaner Access Door and check that the Yellow Printhead Cleaner is correctly seated in slot 1 of the Service Station and then close the Printhead Cleaner Access Door. „ Replace the Yellow Printhead Cleaner in slot 1 of the Service Station. System Error: 29.1:01 Problem Description: Printhead Cleaner not inserted correctly in slot 2. Corrective Action: Try the following: „ Open the Printhead Cleaner Access Door and check that the Yellow Printhead Cleaner is correctly seated in slot 2 of the Service Station and then close the Printhead Cleaner Access Door. „ Replace the Yellow Printhead Cleaner in slot 2 of the Service Station. hp designjet 4000 series printer service manual 2-11