Oki MB461MFP, Maintenance Manual

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Oki Data CONFIDENTIAL
44871001TH Rev.6
8-64
8. TROUBLESHOOTING PROCEDURES
8.5.5. (16) Humidity sensor error (Error code 123)
(16-1) Humidity sensor error
Check item Check operation Actions for NG
results
(16-1-1) Check the system connection
Connection to the
CU/PU board and
to the toner sensor
board Check if the 28-conductor FFC is connected to
the HVIF connector of the CU/PU board normally. Re-connect the
cable normally.
FFC connecting the
CU/PU board and
the high voltage
board
Check for open-circuit with HVIF.
Check that peeling off of sheath does not occur
in any cables by visual inspection. Replace the FFC
with the normal
FFC.
(16-1-2) Environment condition
Sharp change
of environment
condition Is the environment condition changed sharply
from a low temperature environment to a high
environment condition within a short time?
(Example is such a case that a printer is moved
from storage condition of a cold area in winter to
an office environment.) Leave a printer
for around one
hour in the new
environment to
get used to the
new environment.
After that, turn on
the power again.
Before turn on
the power, touch
the metal panel
of the controller
panel and the
metal plate inside
a printer to feel
temperature
increase inside
a printer with
human hands.
After confirmation
that the printer
temperature
has increased
close to the room
temperature, turn
on the power
again.