Oki Data CONFIDENTIAL
45850101TH Rev.1
2-65
2. TROUBLESHOOTING PROCEDURES
Check item
Check work
Actions to be taken
at NG
(4-1-3)
Sensor check
Up/Down sensor
lever (unified
structure with the left
link lever)
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the left
link lever.
Up/Down sensor
Confirm that the sensor signals are normally
detected by using the SWITCH SCAN function of
the self-diagnostic mode.
Check if the SCAN state changes or not when
the incoming light is interrupted/passed by using
a piece of paper or the like for the transparent
type sensor.
Replace the high
voltage board.
(4-2)
Error occurs during the Down movement of the ID unit
Check item
Check work
Actions to be taken
at NG
(4-2-1)
Check the mechanical load during the Down movement
Mechanical load
during installation
and removal of the
ID unit
Check if abnormal heavy load is applied when
removing the ID unit.
Replace the ID
unit, or replace
the right/left side
plate.
Greasing to the right
and left Up/Down
link levers
Check if the slant surface of the link lever is
coated by grease or not.
Apply grease.
Assembled condition
of the right and left
Up/Down link levers
Check if any part exists or not in the vicinity of
link lever, that hampers movement of the link
lever.
Assemble them
correctly.
2.5.5. (5) Fuser unit error (Error code: 167 to 177)
(5-1)
Error occurs immediately after the power is turned on.
Check item
Check work
Actions to be taken
at NG
(5-1-1)
Thermistor is defective Note)
Upper thermistor,
lower thermistor,
side thermistor,
heater thermistor
Check the respective thermistors if they are
shorted or opened internally.
Check the resistance value at the connector pins
in the bottom of the fuser unit.
(Refer to section 6.3 Resistance value (fuser
unit).)
Replace the fuser
unit.
If any attempt of
using new fuser
unit as a trial
is going to be
made, be sure to
use the System
Maintenance
Menu FUSE
KEEP MODE.
Installed condition of
fuser unit.
Check if the fuser nit is pressed in until the
connector in the bottom of the fuser unit is surely
connected.
Re-set the fuser
unit.
Note! 168: Error, 169: Error, 171: Error, 173: Error, 175: Error, 177: Error can occur
when the printer temperature is below 0˚C. Turn on the power again after the
printer temperature has increased.
