• Code: 51:10
• Description: Top Cover sensor failure. Main PCA
• Remedy: Remote troubleshooting (call agent) 1. Switch off the printer, and disconnect the power cord. Reconnect the power cord and power on the printer. 2. The call agent asks the customer to go to Support Menu by pressing the Power key continuously for 15 seconds. 3. Go to 2 Diagnostics menu and run 2.4 Top Cover Sensor diagnostic, see 2.4 Top Cover Sensor. 4. The call agent should arrange a service engineer visit to change the Ink Cartridge Cover Sensor PCA; follow the onsite troubleshooting below. • Ink Cartridge Cover Sensor • CQ890-67028 5. If a different system error is displayed then the call agent should perform the applicable troubleshooting procedure.
  Onsite troubleshooting and solution (service engineer) 1. Go to Support Menu (see Entering the support menus) and run 2.4 Top Cover Sensor diagnostic, see 2.4 Top Cover Sensor. 2. Replace the Top Cover Sensor PCA. 3. Remove the covers and check that the cable of the Top Cover sensor is connected to the Main PCA and is undamaged. If the cable is not connected then reconnect it, and power on the printer again to check that the error has disappeared. Important note: If the cable is damaged then order a Cable Service Kit. • Cables Sk • CQ890-67021 4. Replace the Main PCA, see Main PCA. • Main PCA Pro • CQ890-67023 • Main PCA Basic • CQ891-67003

• Code: 53.1:10
• Description: OOP (Out-Of-Paper) Sensor failure. Bundle PCA, Bundle FFC, Main PCA
• Remedy: Remote troubleshooting (call agent) 1. Switch off the printer, and disconnect the power cord. Reconnect the power cord and power on the printer. 2. The call agent will ask the customer to go to Support Menu by pressing the Power key continuously during 15 seconds 3. Go to Diagnostics and run 2.5 OOP Sensor diagnostic, see 2.5 Out-Of-Paper Sensor. 4. The call agent should recommend the customer to power off the printer, remove the Multitray sheet module, and check that there is no paper behind it, then power on the printer to see whether the error continues. If yes, send the customer an OOP Sensor module (CSR B part). • OOP Sensor flag • CQ890-67032 5. If a different system error is displayed then the call agent should perform the applicable troubleshooting procedure. 6. If, after the customer replaces the OOP Sensor, the failure still continues, the failure may be due to the OOP Sensor cable, so the call agent should order an onsite engineer with the cables kit: • Cables Sk • CQ890-67021 • OOP Sensor flag • CQ890-67032
  Onsite troubleshooting and solution (service engineer) 1. Go to the Support Menu (see Entering the support menus) and run 2.5 OOP Sensor diagnostic see 2.5 Out-Of-Paper Sensor. 2. Remove the Multi-Sheet Tray at the back of the printer, see Multi-Sheet Tray Assembly, and check that there is no paper jammed in the OOP sensor; check also that the sensor is assembled correctly. 3. Replace the OOP Sensor assembly, see Out-Of-Paper Sensor. • OOP Sensor flag • CQ890-67032 4. Remove the covers and check that the cable of the OOP sensor is connected to Bundle PCA and is not damaged. If the cable is not connected then reconnect it, and power on the printer again to check whether the system error has disappeared. Important note: If the cable is damaged then order a Cable Service Kit. • Cables Sk • CQ890-67021 5. Replace the Bundle PCA, see Bundle Board. • Bundle Board • CQ890-67022 6. Replace the Bundle FFC cable, see Bundle Board FFC cable. 7. Replace the Main PCA, see Main PCA. • Main PCA Pro • CQ890-67023 • Main PCA Basic • CQ891-67003

• Code: 53.2:10
• Description: Output Tray sensor failure. Main PCA, Output tray
• Remedy: Remote troubleshooting (call agent) 1. Switch off the printer, and disconnect the power cord. Reconnect the power cord and power on the printer. 2. The call agent asks the customer to go to Support Menu by pressing the Power key continuously for 15 seconds. 3. Go to Diagnostics menu and run 2.6 Output Tray Sensor diagnostic, see 2.6 Output Tray Sensor. 4. The call agent should send to the customer the Output Tray Sensor, which is a CSR part. • Output Tray Sensor Assembly • CQ890-90015 NOTE: If, after the customer repair, the issue still continues, we recommend sending an onsite engineer with Cables Kit and Output Tray Sensor PCA. Follow the steps below on onsite troubleshooting. • Cables Sk • CQ890-67021 • Output Tray Sensor PCA • CQ890-90015. 5. If a different system error is displayed then the call agent should perform the applicable troubleshooting procedure.
  Onsite troubleshooting and solution (service engineer) 1. Go to the Support Menu (see Entering the support menus) and run 2.6 Output Tray Sensor diagnostic, see 2.6 Output Tray Sensor. Check that the Output Tray is not damaged. 2. If the Output Tray is OK and the problem continues then replace the Output Tray Sensor PCA. • Output Tray Sensor PCA • CQ890-90015 3. Remove the covers and check that the cable of the Output Tray Sensor is connected to the Main PCA and is not damaged. If the cable is not connected then reconnect it, and power on the printer again to check whether the system error has disappeared. Important note: If the cable is damaged then order a Cable Service Kit (add part number and name of Cable Service Kit) and change the Output Tray sensor cable: see Output Tray Extender Sensor Cable. • Output Tray Sensor Assembly • CQ890-90015 4. Replace the Main PCA, see Main PCA. • Main PCA Pro • CQ890-67023 • Main PCA Basic • CQ891-67003

• Code: 55:10
• Description: Line sensor failure. Carriage PCA, Trailing Cable, Main PCA
• Remedy: Remote troubleshooting (call agent) 1. Switch off the printer, and disconnect the power cord. Reconnect the power cord and power on the printer. 2. The call agent asks the customer to go to the Support Menu by pressing the Power key continuously for 15 seconds. 3. Go to the Diagnostics menu and run 2.7 Line Sensor diagnostic, see 2.7 Line Sensor. 4. The call agent should arrange a service engineer visit to change the Line Sensor assembly; follow the onsite troubleshooting below. • Line Sensor • CQ890-67001 5. If a different system error is displayed then the call agent should perform the applicable troubleshooting procedure.
  Onsite troubleshooting and solution (service engineer) 1. Go to the Support Menu (see Entering the support menus) and run 2.7 Line Sensor diagnostic, see 2.7 Line Sensor. 2. Remove the covers and check that the cable of the line sensor is connected to the Carriage PCA and it is not damaged. If the cable is not connected then reconnect it, and power on the printer again to check whether the error has disappeared. Important note: If the cable is damaged then replace the Line Sensor, see Carriage Line Sensor. • Line Sensor • CQ890-67001 3. Clean the Line Sensor and try again, see Clean the Carriage Line Sensor. 4. Replace the Carriage Assembly, see Carriage and Belt. • Carriage assembly w/belt (24) • CQ890-67002 • Carriage assembly w/belt (36) • CQ893-67011 5. Replace the Main PCA, see Main PCA • Main PCA Pro • CQ890-67023 • Main PCA Basic • CQ891-67003

• Code: 59.1:19
• Description: Main PCA and Ink Cartridge Sensor PCA replaced at the same time
• Remedy: Onsite troubleshooting and solution (service engineer) 1. The error appears if, during a service operation, the Main PCA and the Ink Cartridge Cover Sensor PCA are replaced at the same time. 2. To recover, do the repair by changing first one component (use the old component for this printer); after powering the printer off and on, change the other.

• Code: 59.2:19
• Description: An unsupported or reused part has been installed
• Remedy: Onsite troubleshooting and solution (service engineer) 1. The error appears if, during a service operation, the Main PCA or the Ink Cartridge Cover Sensor PCA are replaced by a reused part (not a new spare part). 2. To recover, do the repair using HP genuine new spare parts.

• Code: 79:XX
• Description: Generic Printer Error
• Remedy: Turn the printer off and on again.

• Code: 85.1:10
• Description: Feed index encoder sensor does not work properly. Main PCA, Feed Encoder Disk
• Remedy: Remote troubleshooting (call agent) 1. Switch off the printer, and disconnect the power cord. Reconnect the power cord and power on the printer. 2. The call agent should arrange a service engineer visit to change the Feed Index PCA and follow onsite troubleshooting below. • Feed Index encoder sensor PCA • CQ890-67020 3. If a different system error is displayed then the call agent should perform the applicable troubleshooting procedure.
  Onsite troubleshooting and solution (service engineer) 1. Remove the covers and check that all the cables are well connected to the Main PCA, and none of them are damaged. If any cable is not connected then reconnect it, and power on the printer again to check whether the system error has disappeared. Important note: If any cable is damaged then order a Cable Service Kit. • Cables Sk • CQ890-67021 2. Replace the Feed Index Encoder Sensor PCA, see Encoder PCA and Index • Feed Index encoder sensor PCA • CQ890-67020 3. Check that the Encoder Disk is not dirty or damaged. If the Encoder Disk is damaged, it should be replaced, see Encoder Disk. • Encoder Disk. CQ890-67033