Ricoh 1515 MF sc320 and 121 codes

[oswaldo160]

Check the mirrors.
If you touch the surface with a pen the image makes contact.
If it looks like it is at an angle, then it is backward.

I checked the mirrors. But the SC121 and SC320 continues

[dgressy]

I whould like to fix the scannerinitialposition sensor in a mp c3000 becourse of the sc121 (shown as lucky scannermovement at start) - anybody here knowing where it is exactly ?
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it feels like the sc121 comes more often when powering off every evening...