Transport Defects - Canon LBP-1210 Service Manual

IV. TRANSPORT DEFECT
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-
cedures.
IV-1. Multi-feed
<Possible causes>
1) The separation pad surface is dirty or worn.
Action: Clean the separation pad surface. Or, replace the pad if worn.
2) The separation pad spring is defective.
Action: If the spring is not installed correctly, reinstall it in the right position. Or, replace
it if deformed.
3) The sub pad surface is dirty or worn.
Action: Clean the surface, or replace the pad if worn.
IV-2. Wrinkles/ Leading edge hold
<Possible causes>
1) There is paper dust or dirt on the pick-up or delivery roller, or the transport path.
Action: Clean the dirty part.
2) The fixing entrance guide or the pressure roller is dirty.
Action: Clean the guide and the roller.
3) The fixing film unit is scarred or deformed.
Action: Replace the unit.
4) The transport path is scarred or deformed.
Action: Check the transport path. Replace the path, if scarred or deformed.
IV-3. Skew
<Possible causes>
1) There is paper dust or dirt on the pick-up or delivery roller, or the transport path.
Action: Clean the dirty part.
2) The feed roller is scarred or deformed.
Action: Replace the roller.
3) The transport path is scarred or deformed.
Action: Check the transport path. Replace it if scarred or deformed.
4) The paper alignment guide is not adjusted correctly to the present paper size.
Action: Set the guide to the paper size.
CHAPTER 4
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