VI-13
M-7 "14 NO CARTRIDGE" is displayed
Possible cause Step Check Result Remedy
EP-ED HC
cartridge
1 Is an EP-ED HC cartridge installed correctly? No Install the EP-ED HC
cartridge correctly.
Transfer unit
electrode
2 Is the electrode of the transfer unit dirty? Yes Clean the electrode of the
transfer unit.
High-voltage
power supply
PCB
3 Is the voltage of P4-13 in the high-voltage
power supply PCB connector higher than that
of P4-11 over 2.5V?
Yes Replace the high-voltage
power supply PCB assy.
HV harness 4 Is the voltage of P6-13 in the main PCB
connector higher than that of P6-11 over 2.5V?
Yes Replace the HV harness.
Main PCB No Replace the main PCB
assy.
M-8 "16 TONER EMPTY" is displayed
Possible cause Step Check Result Remedy
EP-ED HC
cartridge
1 Take the EP-ED HC cartridge out of the printer
and rock it to distribute the toner evenly.
When the cartridge is returned to the printer,
does the LCD show "00 READY" ?
Yes The problem was caused
by toner one-sided due to
too little toner remaining.
Prepare to replace the
new cartridge.
High-voltage
electrode
2 Are the developing bias or the toner sensor
electrode of the high-voltage power supply
PCB assy dirty?
Yes Clean the electrode.
High-voltage
power supply
PCB
3 Is the voltage of P2-13 in high-voltage power
supply PCB connector higher than that of
P2-11, when the EP-ED HC cartridge which is
full with toner is installed?
Yes Replace the high-voltage
power supply PCB assy.
HV harness 4 Is the voltage of P6-13 in the main PCB
connector higher than that of P6-11?
Yes Replace the HV harness.
Main PCB No Replace the main PCB
assy.
M-9 "13 JAM XXXXXX" is not displayed even if a paper jam has occurred
(or is displayed even if a paper jam has not occurred) XXXXXX is TRAYS/INSIDE/REAR/DUPLEX.
Possible cause Step Check Result Remedy
Actuator 1 Does the actuator of the paper delivery sensor
or the registration sensor operate smoothly?
No Reassemble or replace
the paper delivery
actuator and regist sensor
actuator.
Paper delivery
sensor
Regist sensor
2 Does the voltage of P2-1 in the fixing PCB
connector rise from 0V to 5V when the eject
sensor is covered, or the voltage of P5-5 in the
paper feeder PCB connector rise from 0V to
5V when the registration sensor is covered?
No Replace the fixing PCB
assy or the paper
feed/size-sw PCB assy.
Fuser harness
Feed flat cable
3 Does the voltage of P11-1 in the main PCB
connector rise from 0V to 5V when the eject
No Replace the fuser harness
or the feed flat cable.
sensor is covered, or the voltage of P3-5 in the
main PCB connector rise from 0V to 5V?
Yes Replace the main PCB
assy.
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