General HP Laser Jet Desk Jet Printer Maintenance Training

General HP Laser. Jet/Desk. Jet Printer Maintenance Training Provided by: Ed Quillian For: Harris PC-Technicians/EIT Dept.

Printer Training Overview (Laser. Jet) n n n n Basic Printer Types u HP Laser. Jet u 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 Desk. Jet Printer

Inside Look at the Laser. Jet Type Printer

Basic Laser Print Cycle

Different Components/Functions of a Laser Printer

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

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 powerup with the cover off for troubleshooting purposes only!!

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

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

Possible Service Problems/Troubleshooting/Testing Repeating Print Across Paper

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

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

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

Basic HP Desk. Jet Printers

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

Basic Look at Desk. Jet Printers

Different Components/Functions of Desk. Jet Printer

Disassemble, Switches and Safety Devices

Possible Service Problems, Troubleshooting, Testing

Cleaning and Maintenance

Printing Web Site on the Intranet • EIT Dept. Web Site: (Link to the Ops Manual) http: //gcsd. harris. com/engineering/infotech/deskt op. html • Direct URL to PC-Technician’s Ops Manual: http: //gcsd. harris. com/engineering/infotech/nt/pro cedures/