Oki Data CONFIDENTIAL
43163501TH Rev. 1
153 /
7.5.2.(9)
Fuser Error (Error 170-177)
(9-1)
Error occurred immediately after turning on the printer.
Upper thermistor, lower
thermistor, frame thermistor,
side thermistor (only C3400)
Mounting condition of fuser
Confirmation Tasks
Check whether short or open circuit exists.
Check the resistance value of connector pins on the lower part
of fuser.
(Refer to Chapter 8.1 check the resistance value (Fuser))
Is the connector of lower part of fuser pressed in position in
order to mount the fuser?
Action at NG
Replace the fuser with a
new one. When trying to
use a new fuser, please
utilize the fuse keep
mode of the
maintenance utility. (See
Note! on page 154.)
Reset the fuser.
(9-1-1) Trouble of thermistor Note)
Confirmation Items
(9-2)
Error occurred after turning on the printer for about 1 minute.
Thermostat, halogen lamp
Installation of upper
thermistor
Installation of lower thermistor
AC voltage of low-voltage
power supply
Heater ON signal outputted
from PU to low-voltage power
supply
Confirmation Tasks
Perform the heater control of fuser, and by hand check whether
the fuser is warmed up.
Check that the resistance value between 1pin-7pin of connector
is several ‰ -several 10‰ with keeping the printer cool.
(Refer to Chapter 8.1 check the resistance value (Fuser))
The upper thermistor may be installed out of position, is the
measured temperature lowered?
Remove the heater cover, by visual inspection check whether
bending of sensor occurs.
If the lower thermistor is not contacted, would the detected
temperature be lower than actual temperature?
Is AC voltage supplied for heater normally?
Between 1-3pin and 3-4pin of CN2 connector of power supply
Check whether heater ON signal is activated in the warming-up
timing. L is activated during ON.
14pin of POW connector of main board (BLA PCB)
Action at NG
Replace the fuser with a
new one. When trying to
use a new fuser, please
utilize the fuse keep
mode of the
maintenance utility. (See
Note! on page 154.)
Replace the fuser with a
new one. When trying to
use a new fuser, please
utilize the fuse keep
mode of the
maintenance utility. (See
Note! on page 154.)
Replace the fuser with a
new one. When trying to
use a new fuser, please
utilize the fuse keep
mode of the
maintenance utility. (See
Note! on page 154.)
Replace the low-voltage
power supply.
Replace the main board
(BLA PCB) with a new
one.
(9-2-1) Temperature rise of fuser
(9-2-2) Temperature rise of fuser
(9-2-3) AC input for halogen
Confirmation Items
Note!
Because service call 171 error and 175 error may occur when the temperature of printer is
below zero, please restart the printer after making it warm when the temperature of printer
is low.
