Canon Lbp 3000 User Guide

Handling the Printer5-28
Routine Maintenance
5
•Do not shake the printer while it is printing. Doing so may cause the print quality to 
deteriorate.
•Do not open the top cover of the printing while it is printing. Doing so may damage the 
printer.
•Open and close the output tray, multi-purpose tray, and the top cover of the printer gently. 
The printer may be damaged if you are rough.
•If you want to spread a blanket on the printer to prevent dust from entering the printer, 
turn the power off and allow...

CHAPTER
2-1
2Loading and Delivering Paper
This chapter describes the types of paper that can be used with this printer, and how the paper 
is loaded and delivered.
Paper Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Usable Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Printable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

 Troubleshooting Map 6-2 
Troubleshooting
 
6  Troubleshooting Map 
If you have any problems while you are using the printer, use the flow chart shown 
below to determine the cause of the problem.
The toner density is set too 
light
➞Chapter 4: Specifying the Print 
Quality (p. 4-44)
The toner is running out
➞ Chapter 5: Replacing the Toner 
Cartridge (p. 5-2)
The printer is not connected to the 
computer
➞ Chapter 1: Connecting to a Computer 
(p. 1-12)
Follow the directions displayed in 
the Printer...

Paper Jams6-3
Troubleshooting
6
Paper Jams
The following message is displayed in the Printer Status Window when a paper jam 
occurs during printing.
WARNING
There is a high-voltage unit inside this product. When you are clearing paper 
jams or inspecting the interior of the printer, make sure that no necklaces, 
bracelets, or other metallic objects come into contact with the inside of the 
printer. If this does happen, it may cause burns or an electrical shock.
CAUTION
•Be careful to avoid staining your...

Paper Jams6-4
Troubleshooting
6
•The area around the fixing unit inside the printer becomes hot during use. If you 
are inspecting the inside of the printer while you are clearing a paper jam, etc., 
take care not to touch the area around the fixing unit. Doing so can cause burns.
•Keep your hands or clothing away from the roller in the output area after 
removing jammed paper completely. Even if the printer is not printing, sudden 
rotation of the roller may catch your hands or clothing, resulting in...

Paper Jams6-5
Troubleshooting
6
•Do not touch the transfer roller under any circumstances. Doing so may cause the print 
quality to deteriorate.
•Do not touch the paper feed roller under any circumstances. Doing so may cause the 
paper feed mechanism to malfunction.
•The area around the output tray becomes very hot during printing and directly after 
printing. When you are collecting paper from the output tray or clearing a paper jam, be 
careful not to touch the area around the output tray.
Transfer...

Paper Jams6-6
Troubleshooting
6
1Open the top cover.
Grasp the groove on the right side of the top cover and open the cover until it 
stops.
IMPORTANT
Even if you can see the jammed paper from the output tray, do not pull on the 
paper. Make sure you open the top cover and remove the toner cartridge before 
attempting to clear the jam.
 

Paper Jams6-7
Troubleshooting
6
2Lift the toner cartridge in the direction of the arrows aa a a, then 
pull it out 
bb b b.
IMPORTANT
•If you touch the inner drum with your hand or scratch it, the printing quality will be 
degraded. Do not touch or open the protective shutter of the drum under any 
circumstances. Be careful not to hold or touch any parts other than as directed. 
Doing so may damage the toner cartridge.
a
b
Drum Protective Shutter
 

Paper Jams6-8
Troubleshooting
6
•Do not expose the toner cartridge to direct sunlight or strong light.
•Be careful not to hold or touch sensitive areas such as the sensor or electrical 
contacts. Doing so may damage the printer.
3Place the toner cartridge into the protective bag.
Electrical 
Contacts
Electrical 
Contacts
 

Paper Jams6-9
Troubleshooting
6
4Remove any paper from the multi-purpose tray.
Open the tray cover up to the position where it stops a, pull out the rear paper 
guide b, and then remove the paper c.
IMPORTANT
Even if the paper is jammed in the multi-purpose tray, do not clear the jam, but 
continue with the following steps.
a
b
c