17) Humidity Sensor Error (Error 123); Humidity Sensor Error (Error 123); Humidity Sensor Error - Oki B721 Maintenance Manual

Oki Data CONFIDENTIAL

6.5.2.(17) Humidity sensor error (Error 123)

(17-1)

Humidity sensor error

Check item
(17-1-1) Check the system connection
Connection Check if the 10-conductor FFC is connected
between the PU/ to the OPE connector
CU board and the properly.
control panel board Check if the 10-conductor FFC is connected
to the CN501 connector
panel board properly.
Check the connectors for half-way connection
or angled connection.
FFC connecting the Check for open-circuit with VOM.
PU/CU board and Visually check that the sheath for peeling.
the control panel
board
FFC connecting the Check for open-circuit with VOM.
PU/CU board and Visually check that the sheath for peeling.
the environment
sensor board
45487001TH Rev.1
Actions to be taken
Check work
at NG
Re-connect the
of the PU/CU board cable normally.
of the control
Replace the
FFC with a
normal FFC.
Replace the
FFC with a
normal FFC.
Check item
(17-1-2) 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.)
6. Troubleshooting procedure
Actions 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.
6-64 /