Kyocera FS2020D, FS3920DN, FS4020DN Service Call 4000

 

Kyocera FS2020D, FS3920DN, FS4020DN Service Call 4000 Instructions

Below you will find the service manual information for the Kyocera FS2020D, FS3920DN, FS4020DN Service Call 4000 along with additional details to explain what can cause the problem and followed by solutions that might help you fix it. If I have additional information from past experiences I will try to add it. 

Kyocera FS2020D, FS3920DN, FS4020DN Service Call 4000

Service Manual Instructions for the Kyocera FS2020D, FS3920DN, FS4020DN Service Call 4000

4000 Polygon motor (laser scanner unit) error
Description :
POLRDYN signal does not go low within 10 s after POLONN signal goes low.

Causes :
Defective harness between polygon motor and main PWB (YC11), or improper connector insertion.

Defective harness between main PWB (YC12) and engine PWB (YC12), or improper connector insertion.

Defective laser scanner unit

Defective engine PWB.

Defective main PWB.

Solutions :
Reinsert the connector.

Also check for continuity within the connector harness.

If none, remedy or replace the harness.

Reinsert the connector.

Also check for continuity within the connector harness.

If none, remedy or replace the harness.

Replace the laser scanner unit

Replace the engine PWB

Replace the main PWB

Remember, not every error is exactly the same. What fixes the Kyocera FS2020D, FS3920DN, FS4020DN Service Call 4000 one time might not solve it the next time. While the information above comes from the service manual and generally should get your machine up and running, sometimes other factors might be in play.

If you are reading this article and have experience with this error and would like to contribute please leave a comment below. Or, if you have read this article and have additional questions then ask. If I have experience with the issue then I will respond.

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