1 Troubleshooting 1 Introduction 1-2 Troubleshooting System Error Codes 1-2 Performing a Service Test on a Failed Assembly 1-2 Performing the Necessary Service Calibrations or Adjustments 1-3 Solving Print Quality Problems 1-3 The Printer does not Power ON 1-3 Cover Sensors are not Working 1-3 The File Sent is Not Processed Immediately 1-3 Paper Jams Occur Frequently 1-4 Print Speed is Very Slow 1-4 No Ink Message when there is Enough Ink 1-4 Abnormal Sound Coming from the Printer 1-4 Front Panel is Not Working 1-4 Heater Panel is Not Working 1-4 Solving Heater Problems 1-5 "Power ON Heater Power Switch" appears on Heater Panel 1-5 Heater Does NOT become Hot 1-5 Abnormal Temperature is Displayed 1-5 The Heater Temperature Becomes Extremely High 1-5 "Initializing" Continuously Appears on the Heater Panel 1-5 "Power Save Mode" Continuously Appears on the Heater Panel 1-6 Special Power On Procedure 1-6 Both NVRAM and Main PCA are Replaced Together 1-7 1-1 HP Designjet 9000s Series Printer Service Manual