Oki Data CONFIDENTIAL
45850101TH Rev.1
2-31
2. TROUBLESHOOTING PROCEDURES
Panel display
Cause
Check details
Result
Solution
Inspection is
required.
114:Error
A Tray4 for
another model
was detected.
Is a Tray4 provided for
this model installed?
No
Install a correct Tray4.
Inspection is
required.
120:Error
PU cooling FAN
error
Is the FAN connector
connected correctly?
No
Yes
Check to make sure
connection of the FAN
connector.
Replace the FAN motor.
Inspection is
required.
121:Error
High voltage
power supply
interface error
Is the cable connecting
the CU board to the
high voltage power
supply unit connected
properly?
Is there any defective
contact point?
No
Yes
No
Re-connect them properly.
Check for defective contact
points of the high voltage
system.
Replace the high voltage
power supply unit.
Inspection is
required.
122:Error
Low voltage FAN
error
Is the FAN of the low
voltage power supply
block working?
Is the FAN connector
connected correctly?
No
Yes
No
Yes
Check to make sure
connection of the FAN
connector.
Replace the low voltage
power supply unit.
Replace the FAN motor.
Replace the low voltage
power supply unit.
Inspection is
required.
123:Error
Abnormal
environment
humidity or
unconnected
humidity sensor
Does this error recur?
Yes
Cycle the power.
Replace the Environment
sensor board.
Inspection is
required.
124:Error
Abnormal
environment
humidity
Does this error recur?
Yes
Cycle the power.
Replace the Environment
sensor board.
Inspection is
required.
126:Error
Dew
condensation in
the printer was
detected.
This error tends to occur
after a printer is carried
in from the outsides.
Leave the printer for 2
hours to half a day at
room temperature, and
turn on the power. Does
this error recur?
Yes
After leaving the printer at
room temperature, turn on the
power again.
Replace the Environment
sensor board.
Inspection is
required.
127:Error
Fuser FAN error Is the FAN connector
connected properly?
Does this error recur?
No
Yes
Yes
Re-connect it properly.
Replace the FAN motor.
Replace the CU/PU board.
Panel display
Cause
Check details
Result
Solution
Inspection is
required.
128:Error xx
PU FAN error
04 : Belt Cooling
Fan Error
05 : Fuser Side
Fan Error
08 : Image Drum
Motor Fan Error
0A : Fuser Intake
Fan Error
0C : Duplex Fan
Error
0D : Fuser
Exhaust Fan2
Error
Is the FAN connector
connected correctly?
No
Yes
Check to make sure
connection of the FAN
connector.
Replace the FAN motor.
Inspection is
required.
131:Error
LED head
detection error
(131=Y, 132=M,
133=C, 134=K)
Inspection is
required.
132:Error
Inspection is
required.
133:Error
Inspection is
required.
134:Error
Inspection is
required.
142:Error
Cyan Image
drum position
detection error
Inspection is
required.
154:Error
The belt unit
fuse blown out.
Inspection is
required.
155:Error
The fuser unit
fuse blown out.
Inspection is
required.
160:Error
Toner sensor
detection error
(160=Y, 161=M,
162=C, 163=K)
This error does
not occur with
the factory
default settings.
Is the toner cartridge
installed?
Is the lock lever of the
toner set?
Does this error recur?
No
No
Yes
Install the toner cartridge.
Move the lock lever of toner
cartridge to the lock position.
Replace the toner sensor
assembly.
Inspection is
required.
161:Error
Inspection is
required.
162:Error
Inspection is
required.
163:Error