Error code SC 390

[Radman]

If all fails its the ID sensor

[mikadonovan]

You have a problem with the TD sensor. Install a new PCU.

S C 390 & dirty background
S C 390 TD sensor error

So let's make long story short.... you need a technician to replace the drum and developer and clean your machine

[JustManuals]

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[dawnno1]

Dear all Experts i often got an error code sc 390 on my ricoh aficio 270.kindly tell me what to do with this problem