Humidity Sensor Error (Error Code Ce51); Humidity Sensor Error - Oki MC760 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.4. (18) Humidity sensor error (error code CE51)

(18-1) Humidity sensor error

Check item
(18-1-1) Check the system connection
Connection between Check if the 6-conductor FFC is connected to
the PU board and the ENV connector
Environment sensor or not.
Board MFH Check if the 6-conductor FFC is connected to
the CN connector
or not.
Check if the connector is connected in the half-
way only or not, and check if the connector is
inserted in a slanted angle or not.
FFC connecting Check for open-circuit with VOM.
the PU board and Check that peeling off of sheath does not occur
the Operator Panel in any cables by visual inspection.
board
45376001TH Rev.1
Action to be taken
Check work
at NG
Re-connect the
of the PU board normally cable normally.
of the Board MFH normally
Replace the FFC
with the normal
FFC.
Check item
(18-1-2) Environment condition
Sharp change Is the environment condition changed sharply
of environment from a low temperature environment to a high
condition 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.)
7. Troubleshooting and repair procedure
Action to be taken
Check work
at NG
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.
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