Oki C911 Maintenance Manual

45530603TH Rev.2
4-72
Oki Data CONFIDENTIAL
4. TROUBLESHOOTING PROCEDURE
4.5.2.(11) ID unit Up / Down error
(Service calls 143-01: K, -02: C, -03: M, -04: Y, -05: W/CL)
(11-1) Error occurs during the Up movement of the ID unit
Check item Check work
Actions to be taken
at NG
(11-1-1) Installation status of consumables
ID unit and belt unit Check if the ID unit and the belt unit are
properly installed (fitted) in the printer.
Install the units
properly in the
printer.
(11-1-2) Check mechanical parts.
ID unit and ID up/
down mechanism
Remove the rear cover and inspect the initial
movement and check the up/down motion of
the ID unit for any abnormality.
Check for a difference with and without the ID
unit.
If the ID unit
is the cause
of the error,
replace the ID
unit. If the ID
unit is not the
cause of the
error, replace
the ID motor
driver system.
(11-1-3) Check the electric parts.
ID up/down sensor Check the motion of the ID up/down sensor
by the Switch Scan Test.
Replace faulty
parts.
Wiring condition of
the motor and the
solenoid
Check to make sure that there is no problems
with cables such as a break.
Driver relay PCB Replace the driver relay PCB and check for
recurrence of the same error.
Printer control PCB Replace the printer control PCB and check for
recurrence of the same error.
4.5.2.(12) Fuser unit error (Errors 167 to 173)
(12-1) Error occurs immediately after the power is turned on.
Check item Check work
Actions to be taken
at NG
(12-1-1) Thermistor is faulty Note)
Center 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 9.1 Resistance value (fuser
unit).)
Replace the
fuser unit.
To use a new
fuser unit for a
try, be sure to
use New Parts
Keep Mode
of the System
Maintenance
menu.
Condition of the
fuser unit connector
Check that the ends of connector at the fuser
unit side and the printer side are free from
contamination or a break.
Fix the defect
or replace.
Note! Service calls 171: Error can occur when the printer temperature is below 0˚C.
Tu r n o n t he po we r a g ai n a f te r t he pr i nt e r t em p er at ur e h a s i nc re a se d .

Oki C911 Specifications

General

Brand	Oki
Model	C911
Category	Printer
Language	English