Troubleshooting Performing the Necessary Service Calibrations or Adjustments Is the printer calibrated or adjusted correctly after replacing a component? For information on the Service Calibrations and Adjustments and how to use them, see Chapter 5 - Adjustments and Calibrations . Remember that certain Calibrations or Adjustments are required even if an Assembly has been disassembled to gain access to another Assembly or Component. Solving Print Quality Problems Whenever a Print Quality problem appears, it is advisable to print the Test Print to help diagnose the problem. The Test Print will help you differentiate between possible Printhead errors or mechanical problems.
For information on solving Print Quality problems see Chapter 6 - Print Quality . The Printer does not Power ON 1 Check that the power cord is connected correctly to the Printer and to the Power Socket. 2 Check that the Power Switch on the BACK of the Printer is in the ON position. 3 Replace the Power Supply Unit ⇒ Page 8-43 . Cover Sensors are not Working 1 Perform the Sensors Test ⇒ Page 4-53 . 2 Check if the cable for the faulty sensor is not damaged and is connected correctly. 3 Replace the faulty Sensor. The File Sent is Not Processed Immediately 1 Check that the USB Cable is connected correctly to the Computer and the Printer and that it is NOT damaged.
2 Check that the Data LED on the Front Panel is flashing. If it is flashing and nothing is printed, then maybe the file sent is corrupted or too big. 3 Make sure that the Printer is in the Online state when the file is sent. The file will be rejected if the file is sent when the Printer is in the Offline state. HP Designjet 9000s Series Printer Service Manual 1-3