Ricoh 6503 DF not sizing paper correctly

[ChrisG]

Document feeder will feed LTR paper LEF without a problem. If your turn the paper SEF, it will auto detect the paper as A4, or LGL paper will come up as some other non standard size. All the width and length sensors have been inspected and tested both by Input checks in service mode, and also physically swapping the length sensors. Is this more likely a DF board failure or is it likely that a firmware flash would clear it's brain? Again letter paper LEF feeds fine. Machine has been working fine until a couple of days ago, and get heavy scanning use.

Thanks for the help
Chris
TJL Copy

[luca72]

Usually a problem like this is solved by blowing air on the length sensors, but if you can assure me that you have replaced them all (?)....try replacing the wiring

[ChrisG]

Everything has been thoroughly cleaned, sensors, tires, etc. All the length sensors change state in the SP sensor state check also.

[slimslob]

Sounds like you have a corrupted firmware issue. You need to reflash all firmware. Package might work if the corrupted module is not up to date.