Turn off sub power switch not the main! Then press 2 and 5 and turn on the sub power switch which puts you in MODE 25 select #5 Password setting. Then select #1 key operator setting. Default might be 9272.
Registration motor (M5)
Printer control board (PRCB)
ADU drive board (ADUDB)
Any of the one above, but I would start with the Motor check the registration roller its the big roller (length wise prior to the drum section.
Does the first tray display on the control panel or does the machine state that 1st draw is unavailable? Go to service mode and reset the first draw electrically.
Any reset will wipe the memory and network settings so I would recommend you have tech look at it and see if you can save all setting before wiping clean Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f
Need to access service mode to enter serial number if you don't enter correctly then machine will lock out. I recommend you have a tech do this. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f