select printer | 4000 series | troubleshooting | general troubleshooting

hp designjet 4000 series printers

» general troubleshooting

» Troubleshooting System Error Codes

» Performing a Service Test

» Performing the Service Calibrations

» Solving Print Quality Problems

» The Printer does not Power ON

» The Printer Continuously Rejects Printheads

» Cover Sensors are not Working

» The Line Sensor has Problems Detecting Media

» Troubleshooting Media Jams/Printhead Crashes

» Troubleshooting Shutdowns

» Vacuum suction much lower at high altitudes

» Banding at variable extreme environmental conditions

» Printhead Crashes/Smears on High Density Prints

» Banding due to Ink Cartridge replacement while printing

» 34" Rice Paper not supported

» Cut Sheet rice paper loading failure

» Worm marks on HP Coated media with light area fills

» Solving Media-Handling Problems

» Using the Buzzer at Power-up to Troubleshoot

» Using the Power-up Sequence to Troubleshoot

» Using the Power Switch LEDs to Troubleshoot

» Using the PCA LEDs to Troubleshoot

» How to Interpret the Service Information Pages

» Current Media, Printhead and Ink Information

» Printer Usage Information

» Calibrations Status



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Cover Sensors are not Working

1. Perform the Sensors Test.

2. Check if the cable for the faulty sensor is not damaged and is connected correctly.

3. Replace the faulty Sensor.


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