Canon iR4570 Series Service Manual page 813

Code Detail Name
code
E540 0002
Upper tray
ascent/descent
0003
motor error
(Finisher -Q3/
0004
E542 0002
Lower tray
ascent/descent
motor error
(Finisher-Q3/
0003
Detection
Upper tray
ascent/descent
motor clock
error
Area error
Q4)
Safety switch
activation
Lower tray
ascent/descent
motor clock
error
Q4)
Area error
Remedy
Replace the No. 1 tray
shift motor. Replace
the finisher controller
PCB. Check the tray
ascent/descent
mechanism.
Replace the No. 1 tray
area sensor PCB.
Replace the finisher
controller PCB.
Check the No. 1 tray
closed detecting
switch. Replace the
finisher controller
PCB.
Replace the No. 2 tray
shift motor. Replace
the finisher controller
PCB. Check the tray
ascent/descent
mechanism.
Replace the No. 2 tray
shift area sensor PCB.
Replace the finisher
controller PCB.