I'm servicing a CLJ4730 with a weird problem. When scanning to email it gives a 49.4C04 error. Sometimes the error occurs before I finish entering the email address.
Printing over the network, faxing, copying all work fine. Only scan to email gives an error. Customer says it's been going on for about a year but they just lived with it because it was intermittent. But now it happens every time. Could this be a disk drive problem even though it's not reported as a disk error?
The service manual mentions the DC controller as a possible cause but that seems unlikely to me since all other functions work perfectly.


So far: updated firmware to version 46.380.3 - no change.
Replaced formatter - no change.
Performed cold reset and nvram reset - no change.

Thanks!
CSCCE