Laserjet M603DN tray 2 not lifting.

[JGerbig]

Thank You! BradStefonek, I went back and checked the contact you described and found it was bent just right to miss contact. I straightened the contact and I can now show a ready state on the printer. The orignal problems remain, (tray 2 lifting and not moving, no motors spin at power on...) I updated the firmware again and tried the Tray/Bin manual test in diags again and find the PS107/PS907 is stuck in the on. I will remove and check it out and get back. Again BradStefonek Thanks for the tip!

[JGerbig · Accepted solution]

I've replaced EVERYTHING in this thing that I could, another warehouse shipped us a M603 that they dropped down the stairs. Swapped motors, fans, fuser, boards.......and it now will print one page and then give unexpected paper size error and will not print page 2 or more. PS106 and PS103 now test bad. The broken printer is smashed in this area so its sensors are bad too. I can't find the sensors online. I now have a real good stock of spare parts for the next one. Thanks to everyone for the help.

[SHThompson]

HP photo sensors hardly ever fail and two in the same machine is highly unusual.

Have you spot the DC controller since the photo sensor issues starting?

I would also look really close at the wiring.

[JGerbig]

OK, I have tried 3 lift motors, 3 DC controllers, 3 formatters, 3 toners, 2 of every other motor, solenoid, fan, paper tray, paper pickup assy. I still get the unexpeted paper size error.