HP 400 - Manual (Page 10)

Contents-3
Chapter 5 Problem Resolution
Troubleshooting Tools . . . . . . . . . . . . . . . . . . . . . 5-2
Overall Troubleshooting . . . . . . . . . . . . . . . . . . . . 5-3
Solving Power Adapter Problems . . . . . . . . . . . . . . . . . 5-4
Troubleshooting the Printer . . . . . . . . . . . . . . . . . . . 5-4
Self-Tests . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Power On Self-Test . . . . . . . . . . . . . . . . . . . . 5-4
Printer Demo Page. . . . . . . . . . . . . . . . . . . . . 5-5
Printing Problems . . . . . . . . . . . . . . . . . . . . . . 5-5
Printer Light Indications. . . . . . . . . . . . . . . . . . . . 5-8
Solving Carriage Stall Conditions . . . . . . . . . . . . . . . . 5-10
Troubleshooting Paper Feed Operations . . . . . . . . . . . . . . . 5-12
Clearing Paper Jams . . . . . . . . . . . . . . . . . . . . . 5-14
Avoiding Print Skew . . . . . . . . . . . . . . . . . . . . . 5-16
Printer Skew Specification . . . . . . . . . . . . . . . . . . . 5-16
Measuring Paper Squareness . . . . . . . . . . . . . . . . . . 5-16
Measuring Print Skew . . . . . . . . . . . . . . . . . . . . 5-17
Troubleshooting Communication Problems . . . . . . . . . . . . . . 5-18
Troubleshooting Print Cartridges . . . . . . . . . . . . . . . . . 5-20
Short Print Cartridge Life . . . . . . . . . . . . . . . . . . . 5-20
Identifying the Print Cartridge Expiration Date . . . . . . . . . . . . 5-22
Using the Print Cartridge Cleaning Routine . . . . . . . . . . . . . 5-24
Removing Crusted Ink from the Print Cartridge Nozzles . . . . . . . . 5-25
Cleaning the Electrical Contacts . . . . . . . . . . . . . . . . . 5-26
Clearing Clogged Print Cartridge Nozzles . . . . . . . . . . . . . . 5-26
Troubleshooting Print Quality . . . . . . . . . . . . . . . . . . 5-27
Solving Black Print Quality Problems . . . . . . . . . . . . . . . 5-27
Solving Color Print Quality Problems . . . . . . . . . . . . . . . 5-28
Printouts Missing Rows of Dots . . . . . . . . . . . . . . . . . 5-31
Inconsistent Color Fill Patterns . . . . . . . . . . . . . . . . . 5-33