Oki Data CONFIDENTIAL
44871001TH Rev.6
8-33
8. TROUBLESHOOTING PROCEDURES
Display
Cause
Error details
Measure
Power OFF/ON
075 : Error **
Video error.
An error was
detected in
expanding
image data.
Is the CU/PU installed
properly?
No
Yes
Reinstall it properly.
Replace it.
Power OFF/ON
080 : Error
Parameter I/O
Error
An access error occurred in a
storage point of a parameter
by file damage.
Inspection is
required.
081 : Error
Parameter
matching
check error
Reading from or writing into
EEPROM or flash memory
cannot be made properly.
Turn off and on the
MFP.
Replace the CU/PU
board when the
symptom persists.
Inspection is
required.
085 : Error
SD Card ECC
Error
An ECC error was detected
by read processing of a SD
memory card.
Inspection is
required.
104 : Error
An engine
EEPROM
read/write
error was
detected.
Does the error occur again?
Yes
Turn off and on the
MFP
Replace the CU/PU
board.
Inspection is
required.
106 : Error
Engine control
logic error
Does the error occur again?
Yes
Turn off and on the
MFP
Replace the CU/PU
board.
Inspection is
required.
112 : Error
The 2nd tray
for a model
different from
the MFP was
detected.
Is the 2nd tray for the MFP
installed?
No
Install proper 2nd tray.
Inspection is
required.
121 : Error
High-voltage
power supply
interface error
Is the cable between the CU/
PU board and the high-
voltage power unit connected
properly?
Is a contact faulty?
No
Yes
No
Reconnect it properly.
Check the high-
voltage line for no poor
connection.
Replace the high-
voltage power supply.
Inspection is
required.
122 : Error
Rear-fan error
Does the fan at the rear of
the MFP operate?
Is the connector of the fan
connected properly?
No
Yes
No
Yes
Be sure of the
connection of the
fan.
Replace the CU/PU
board.
Connect the fan
properly.
Replace the CU/PU
board.
Display
Cause
Error details
Measure
Inspection is
required.
123 : Error
Ambient
humidity
error or non
connection
of humidity
sensor
Is the cable from the CU/PU
board to the toner sensor
board connected properly?
No
Yes
Re-connect it properly.
Replace the toner
sensor board.
Inspection is
required.
124 : Error
Ambient
temperature
error
Is the cable from the CU/PU
board to the toner sensor
board connected properly?
No
Yes
Re-connect it properly.
Replace the toner
sensor board.
Inspection is
required.
127 : Error
An error of
exhaust fan of
the Fuser
Is the fan's connector
properly connected?
Does the error occur again?
No
Yes
No
Connect properly.
Replace the fan's
motor.
Replace the PU board.
Inspection is
required.
128 : Error
05
Image drum
fan error
Is the connector of the fan
connected properly?
Does the error occur again?
No
Yes
No
Re-connect it properly.
Replace the fan motor.
Replace the CU/PU
board.
Inspection is
required.
134 : Error
LED head
detection
error (134=K)
Is the LED head installed
properly?
Is the LED head fuse
broken?
Does the error occur again?
No
Yes
Yes
No
Yes
Install the LED head
unit.
Check the LED head
fuse.
Check the fuse.
Turn off and on the
MFP.
Replace the LED head
unit.
Inspection is
required.
153 : Error
Image drum
unit fuse-cut
error
Is the image drum unit
installed properly?
Does the error occur again?
Is the MFP recovered by
replacing the toner sensor
board.
No
Yes
Yes
No
Re-install it.
Turn off and on the
MFP.
Be sure of the cable
connection from the
CU/PU board to the
toner sensor board,
and then replace the
toner sensor board.
Replace the CU/PU
board.
Summary of Contents for MB461MFP
Page 1: ...MB461 MB471 MB491 MB491 MB491 LP MPS4200mb MPS4700mb Maintenance Manual 031314C ...
Page 72: ...Oki Data CONFIDENTIAL 44871001TH Rev 6 3 21 3 MFP INSTALLATION Sample MB471 Sample MB491 ...
Page 114: ...44871001TH Rev 6 4 36 Oki Data CONFIDENTIAL 4 REPLACEMENT OF PARTS ...
Page 138: ...Oki Data CONFIDENTIAL 5 LUBRICATING POINT 5 1 Lubrication point 5 2 ...