1. General HP LaserJet/DeskJet Printer Maintenance Training
Provided by:
Ed Quillian
For:
Harris PC-Technicians/EIT Dept.

2. Printer Training Overview (LaserJet)
Basic Printer Types
HP LaserJet
HP Laser Jet Color
Basic Inside Look at Laser Printer
Basic Laser Print Cycle
Different Components/Functions of Laser Printer
Switches and Safety Devices
Possible Service Problems/Troubleshooting/Testing
Cleaning and Maintenance
Above areas that apply for the DeskJet Printer

3. Inside Look at the LaserJet Type Printer

4. Basic Laser Print Cycle

5. Different Components/Functions of a Laser Printer

6. Different Components/Functions of a Laser Printer

7. Different Components/Functions of a Laser Printer
Fuser Assembly
AC Power Supply
Upper and Lower Cooling Fans
Printer Gear Motor Assembly
High Voltage Power Supply
Paper Pickup Roller Assembly
Transfer Corona Wire
Printer Density Dial Adjustment

8. Switches and Safety Devices
Power On/Off Switch
Safety Interlock Switch
Bottom Cover Interlock Switch
Thermo-protector Switch
NOTE: With the outside cover off, there is a possibility of Laser Light being reflected into your eyes, causing blindness. Do not look directly at that area during power-up with the cover off. Only power-up with the cover off for troubleshooting purposes only!!

9. Possible Service Problems/Troubleshooting/Testing
Paper Feeding/Jam Problems
Print Quality Problems
Fuser Failure Problems
Stripped Plastic Gears Problem
Troubleshooting (see handout, and web site)
Perform Internal Printer System Print Test
Perform Internal Engine Print Test
Perform External Printer System/OS Print Test
Perform a Fusing Check

10. Possible Service Problems/Troubleshooting/Testing
Black Vertical Lines on Paper

11. Possible Service Problems/Troubleshooting/Testing
Repeating Print Across Paper

12. Possible Service Problems/Troubleshooting/Testing
Vertical Smearing of Toner Across Paper

13. Possible Service Problems/Troubleshooting/Testing
Print Characters Are Not Consistence and Uniform

14. Cleaning and Maintenance
Use Only 90% Solution of Isopropyl Alcohol and Lint Free Wipes
Check/Clean All Paper Rollers
Check/Clean Primary Corona Wire in Toner Cartridge
Check/Clean Transfer Corona Wire
Check/Clean All Cooling Fans
Check/Clean Inside of Printer Area

15. Basic HP DeskJet Printers

16. Printer Training Overview (DeskJet)
Basic Look at DeskJet Printer
Different Components/Functions of DeskJet Printer
Disassemble, Switches and Safety Devices
Possible Service Problems/Troubleshooting/Testing
Cleaning and Maintenance

17. Basic Look at DeskJet Printers

18. Different Components/Functions of DeskJet Printer

19. Different Components/Functions of DeskJet Printer

20. Different Components/Functions of DeskJet Printer

21. Different Components/Functions of DeskJet Printer

22. Different Components/Functions of DeskJet Printer

23. Disassemble, Switches and Safety Devices

24. Disassemble, Switches and Safety Devices

25. Disassemble, Switches and Safety Devices

26. Possible Service Problems, Troubleshooting, Testing

27. Possible Service Problems, Troubleshooting, Testing

28. Possible Service Problems, Troubleshooting, Testing

29. Possible Service Problems, Troubleshooting, Testing

30. Cleaning and Maintenance

31. Printing Web Site on the Intranet
EIT Dept. Web Site: (Link to the Ops Manual)
Direct URL to PC-Technician’s Ops Manual: