9)Fuser Error (Service Call 170-177); Error Occurred Immediately After Turning On The Printer; Error Occurred After Turning On The Printer For About 1 Minute - Oki C3530nMFP Maintenance Manual

7.5.2.(9) Fuser Error (Service call 170-177)
(9-1)

Error occurred immediately after turning on the printer.

Confirmation Items
(9-1-1) Trouble of thermistor
Upper thermistor,
lower thermistor, frame
thermistor, side thermistor
(only C3400)
Mounting condition of
fuser
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.

(9-2) Error occurred after turning on the printer for about 1 minute.

Confirmation Items
(9-2-1) Temperature rise of fuser
Thermostat, halogen lamp Perform the heater control of fuser, and by hand check
(9-2-2) Temperature rise of fuser
Installation of upper
thermistor
Installation of lower
thermistor
(9-2-3) AC input for halogen
AC voltage of low-voltage
power supply
Heater ON signal
outputted from PU to low-
voltage power supply
43605601TH Rev. 1
Confirmation Tasks
Note)
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?
Confirmation Tasks
whether the fuser is warmed up.
Check that the resistance value between 1pin-7pin of
connector is several Ω -several 10Ω 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.
20pin of POW connector of main board (M32 PCB)
Oki Data CONFIDENTIAL
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.
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 M32 PCB)
with a new one.
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