System Error Codes System Error: System Error 121x: Printhead Temperature Error Problem Description: The Printhead temperature is too high (85 o C or higher) or too low (-10 o C or lower). „ x = 0: Printhead Number 1 (Black). „ x = 1: Printhead Number 2 (Light Magenta). „ x = 2: Printhead Number 3 (Light Cyan). „ x = 3: Printhead Number 4 (Yellow). „ x = 4: Printhead Number 5 (Magenta). „ x = 5: Printhead Number 6 (Cyan). Corrective Action: Try the following: „ Check the failing Printhead to make sure that it is not damaged and that the cable are correctly connected „ Replace the Carriage PCA ⇒ Page 8-91 . „ Replace the Printhead ⇒ Page 8-35 . System Error: System Error 1220:
Edge Sensor Error Problem Description: The Printer has problems detecting the edge of the Media . Corrective Action: Try the following: „ Enter the Sensors Menu (in Maintenance Mode) and select "Printer Sensors". Then execute the "Line Sensor" option, and check if the Line Sensor is functioning correctly by inserting a white piece of paper underneath it. If the Line Sensor responds, then it is functioning correctly. „ If the Line Sensor does not respond to the white piece of paper, then replace the Line Sensor ⇒ Page 8-97 . „ Replace the Carriage PCA ⇒ Page 8-91 . System Error: System Error 123x: Sub-Tank Sensor Error (Full or Half) Problem Description:
The Full and Half Sensors on the Sub-Tanks are defective. „ x = 0: Printhead Number 1 (Black). „ x = 1: Printhead Number 2 (Light Magenta). „ x = 2: Printhead Number 3 (Light Cyan). „ x = 3: Printhead Number 4 (Yellow). „ x = 4: Printhead Number 5 (Magenta). „ x = 5: Printhead Number 6 (Cyan). Corrective Action: Try the following: „ Enter the Sensors Menu (in Maintenance Mode) and select "Sub Tank Sensor". Then execute ALL the "Full x" and "Half x" options, and check if the Sub-Tank Sensors are functioning correctly. Manually move the Sub-Tank Sensor Plate and if the Sensor responds, it means that it is working correctly.
„ If any of the Sub-Tank Sensors fail to respond, then replace the corresponding Sub-Tank Sensor ⇒ Page 8-106 . „ Make sure that the Sub-Tank Sensor Relay Cables (Left/Right) and the Sub- Tank Sensor Cables are connected correctly and are not damaged. 2-12 HP Designjet 9000s Series Printer Service Manual