System Error Codes „ Replace the Main PCA ⇒ Page 8-35 . System Error: System Error 124x: Ink Supply Sensor Error Problem Description: The Ink Supply Sensor does not change even though the specified time has passed after driving the Ink Supply Motor for the Sub-Tank. „ 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 the "XX Ink Pump" option for each color, and check if the Ink Supply Sensor is functioning correctly. Manually move the gear and if the Sensor responds, it means that it is working correctly. „ If any of the Ink Supply Sensors fail to respond, then replace the corresponding Ink Supply Station ⇒ Page 8-101 . „ Enter the Motors Menu (in Maintenance Mode) and set the "X Pump Motor" option to "Normal" to drive the Ink Supply Motor. When the Sub- Tank is already full, it will not be checked and therefore ink should be discharged. Once the motor drive has been checked, set it "Stop" immediately. Repeat the process with the other colors.
„ If any Ink Supply Motor fails, then replace the corresponding Ink Supply Station ⇒ Page 8-101 . „ Replace the Main PCA ⇒ Page 8-35 . System Error: System Error 125x: Sub-Tank Supply Error Problem Description: The Sub-Tank Sensor does not switch to less than half even though ink has been consumed. „ 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 Motors Menu (in Maintenance Mode) and set the "Solenoid L" and "Solenoid R" options to "Closed" to cut the outside air. Now set the "Cap Stat Motor" to "Prime" to discharge the ink from the Sub-Tank and check if the Ink Supply Motor drives by turning the power ON again when there is a little bit of ink left. If the Motor is not driven, replace the corresponding Cable or Ink Supply Station. „ Check whether the Sub-Tank Sensor Plate works correctly and is not blocked by any foreign object. HP Designjet 9000s Series Printer Service Manual 2-13