Canon LBP-800 Manual Do Serviço

Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1).  If a
“transport defect” is found, the defective part must be located and rectified by the following pro-
cedure.

<Possible causes>
1) Worn or dirty separation pad surface

Action: Clean the separation pad surface if dirty.  Replace the separation pad if worn.

2) Defective separation pad spring

Action: Set the spring in the right position if out of position.  Replace the spring if deformed.

3) Worn or dirty sub pad surface

Action: Clean the sub pad surface if dirty.  Replace the sub pad if worn.

<Possible causes>
1) Paper dust and dirt accumulated on the pick-up roller, feed roller, and paper guide

Action: Clean the dirty areas.

2) Dirty fixing unit entrance guide and pressure roller

Action: Clean the fixing unit entrance guide and pressure roller.

3) Scarred or deformed fixing film unit

Action: Replace the unit if scarred or deformed.

4) Scarred or dirty paper guide

Action: Check the paper path.  Replace any scarred or deformed guide(s).

<Possible causes>
1) Paper dust and dirt accumulated on the pick-up roller, feed roller, and paper guide

Action: Clean the dirty areas.

2) Scarred or deformed feed roller

Action: Replace the roller if scarred or deformed.

3) Scarred or dirty paper guide

Action: Check the paper path.  Replace any scarred or deformed guide(s).