Oki C911 - Page 67

45530603TH Rev.2
4-22
Oki Data CONFIDENTIAL
4. TROUBLESHOOTING PROCEDURE
Panel display Cause Check details
Result
Solution
Service Call
241:Error
~
245:Error
Engine Program
Memory Error
241: DUPLEX Flash
memory error
242: Option Tray2
243: Option Tray3
244: Option Tray4
245: Option Tray5
Power OFF/ON.
Does this error recur? Yes 241: Replace the
DUPLEX PCB.
242-5: Replace the
option tray PCB.
Service Call
247:Error
Engine PORT CPU
Program Memory
Error
Power OFF/ON.
Does this error recur? Yes Replace the printer
control PCB.
Service Call
249:Error
Engine DRIVER
CPU Program
Memory Error
Power OFF/ON.
Does this error recur? Yes Replace the driver
relay PCB.
Power Off/On
250:Error
Secure File Erasing
Error
An encrypted file
erasing error was
detected.
Did the user accept to
execute HDD ERASE?
ADMIN MENU
HDD ERASE
informing the user
of the necessity
to execute Disk
ERASE to delete
the encrypted file
and restore the
HDD defaults.
Service Call
251:Error
Secure Disk Erasing
Error
An error was detected
during Disk ERASE.
Power OFF/ON.
Does this error
message reappear?
Yes Replace the HDD.
Service Call
254:Error
An unexpected error
occurred during
initialization of the
Security mode.
Error cause information
is displayed after the
error code number.
Power OFF/ON.
Does this error
message reappear?
Yes Regenerate an
encryption key. If it
doesn’t solve the
problem, replace
the CU PCB.
Service Call
257:Error
An unexpected error
occurred during
initialization of the
HDD.
Error cause
information is
displayed after the
error code number.
Power OFF/ON.
Does this error
message reappear?
Yes Format the HDD
again. If it does not
solve the problem,
replace the HDD.
Panel display Cause Check details
Result
Solution
Power Off/On
901:Error
902:Error
Short circuit (901)
or open circuit
(902) with the belt
thermistor was
detected.
Check the belt
thermistor wiring. (Is
there any abnormal
condition with the
belt unit, contact
substrate which is the
tag terminal PCB of
the printer unit, or the
cable)?
Yes Replace the part or
the belt unit.
No Replace the driver
relay PCB.
Power Off/On
903:Error
904:Error
The belt thermistor
detected abnormal
temperature.
903:too high
904:too low
Check the belt
thermistor wiring. (Is
there any abnormal
condition with the
belt unit, contact
substrate which is the
tag terminal PCB of
the printer unit, or the
cable)?
Yes Replace the part or
the belt unit.
No Replace the driver
relay PCB.
Service Call
993:Error
An error was
detected with the
paper thickness
sensor power cable.
Power OFF/ON.
Does this error recur? Yes Replace the paper
thickness sensor
and the cable.
Does this error recur? Yes Replace the printer
control PCB.
Service Call
994:Error
A fuser where a high
temperature error
was detected is
installed.
Power OFF/ON.
Does this error recur? Yes Replace the fuser
unit.
Power Off/On
F0C:Error
CU program error Power OFF/ON.
Does this error recur? Yes Replace the printer
control PCB.
Power Off/On
FFF:Error
CU program error Power OFF/ON.
Does this error recur? Yes Replace the printer
control PCB.
Note) Service call errors, 171: Error, 166-02: Error, 168-02: Error, 169-02: Error,
0169-04: Error and 902: Error can occur when the printer temperature is under
0°C; therefore, if the printer temperature is low, turn on the printer after the
printer temperature has risen enough.