The tray 1 upper limit sensor (PS7) does not change even after the lapse of a predetermined period of time after tray 1 is opened and closed, after C0202 (Tray 1 feeder up/down abnormality) is detected.
Trouble isolation
Tray 1
Relevant electrical parts
Tray 1 upper limit sensor (PS7)Base board (BASEB)
Procedure
Check the connector between PS7-BASEB CN22E for proper connection and correct as necessary.