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VI - 13
Is the paper feed mode set correctly?
Possible cause Step Check Result Remedy
Mis-operation 1 No Set paper feed mode
correctly.
2
No
Replace the feed flat cable.
" CHECK XX TRAY " is displayed even if a paper-loaded cassette is mountedM-7
Yes
Replace the main PCB assy.
Main PCB
Actuator Does the actuator for the paper empty sensor
operate smoothly?
Reassemble or replace the
actuator.
No
Paper empty
sensor
Feed flat cable
Does the voltage of P5-3 (or P5-14) in the
Paper feeder PCB connector rise from 0V to
5V when the paper empty sensor is covered?
3
No
Replace the paper feed/size-
sw PCB assy or feed flat
cable .
Paper feed flat
cable
Does the voltage of P3-3 (or P3-14) in the main
PCB connector rise from 0V to 5V when the
paper empty sensor is covered?
(or even if a paper is set on MP tray) XX is MP/T1/T2
4
Yes
Possible cause Step Check Result Remedy
1No
2 Yes
3
Yes
4
No
M-8 "14 NO CARTRIDGE " is displayed
EP-ED cartridge
Is an EP-ED cartridge installed correctly? Install the EP-ED cartridge
correctly.
Clean the electrode of the
transfer unit.
Is the electrode of the transfer unit dirty?
Transfer unit
electrode
High-voltage
power supply
PCB
Is the voltage of P4-13 in the high-voltage
power supply PCB connector higher than that
of P4-11 over 2.5V?
Is the voltage of P6-13 in the main PCB
connector higher than that of P6-11 over 2.5V?
HV harness
Main PCB
Replace the high-voltage
power supply PCB assy.
Replace the HV harness.
Replace the main PCB assy.