LaserJet M521dn - Scanner Error 16

[KJEpps]

I'm in a bind. I have a LaserJet Pro MFP M521.


The customer initially brought it in for not initializing. I replaced the Formatter Board and all was good for about 4 days. Then the customer reported that it was getting a Scanner Error 16 at power up, but that error is not listed in the User Guide or the Service Manual. In troubleshooting, I replaced the Formatter Board a second time.


Does anyone have an idea whether this indicates that it is the Scanner Assembly or the ADF Assembly that has failed?

TIA

[Wild Bill]

Re: LaserJet M521dn - Scanner Error 16

Scanner Error 16
Description
There is an internal hardware error with automatic document feeder (ADF).
Recommended action
Replace the ADF

[KJEpps]

Re: LaserJet M521dn - Scanner Error 16

Thanks, Wild Bill! I'm curious. Where did you get this info? My version of the Service Manual didn't have it.

[Wild Bill]

Re: LaserJet M521dn - Scanner Error 16

Laserjet Pro400 - Scanner Error 16 - HP Support Forum - 5376478

Ye its a different model but I couldnt find it in the damn manual and I have all. Ive been researching since I posted. I would pull the adf and try it as a flat bed and see what happens. Or check connectors.

[Lance15]

Re: LaserJet M521dn - Scanner Error 16

Probably the same or close to the same as the old M2727 scanners. Piece of S*#t!