2E24】Faulty Roll Paper Unit, 【2E0E】Roll Paper Unit Not Available - Canon iPF9000S Troubleshooting Manual

9. 【2E24】Faulty roll paper unit, 【2E0E】Roll paper unit
not available
Occurrence
conditions
C1 Sensors
C2 Operational
C3 Electrical
Cause
C1 Check to see if the roll paper sensor functions normally in IO mode.
With the cover open, interchange the roll cam sensor and the roll paper sensor to
C1 check that they still function normally.
(Replace the roll paper sensor if it fails to function normally in IO mode.)
With the cover open, check the driver for normal operation (without the pendulum
C2
gear loosened out of position or the drive gear being damaged).
Check the roll paper unit for contact.
C3 (Turn off the printer and connect the roll unit to check to see if it recovers when the
printer restarts.)
C3 With the roll paper unit uncovered, check the voltage while it starts up.
Flow 1
Is the drive voltage available to
the roll feed motor PCB?
Roll Feed Unit Drive Voltage Check
Troubleshooting Guide
iPF5000 Series only
Faulty roll paper sensor
Faulty roll cam sensor
Pendulum gear loosened out of position or damaged drive gear
Faulty roll paper unit motor
Faulty roll paper unit PCB
Faulty main PCB
Key point to check
Yes
Replace the roll feed motor
Replace the roll feed unit PCB
Replace the main controller
Phase B～
Phase B
Evaluation method
Check any one of the four terminals of the roll feed motor PCB
with the tester while the motor is running. The drive voltage is
normal if the multimeter reads 12 to 14 V.
3-16
Action
Replace the roll
paper sensor.
Replace the roll cam
sensor.
Replace the gear.
－
Flow 1
Phase A
Phase A～