43856301TH Rev.3
171 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
7.5.2. (10) ID unit Up/Down error (Service call 140 to 143)
(10-1) Error occurs during the Up movement of the ID unit
Check item
Check work
Action to be taken
at NG
(10-1-1) Check the mechanical load during the Up movement
Mechanical load
during installation
and removal of the
ID unit
Check if abnormal heavy load is applied when
removing the ID unit.
IReplace the ID
unit, or replace
the right/left side
plate.
If any attempt
of using new
ID unit as a
trial is going
to be made,
be sure to use
the System
Maintenance
Menu FUSE
KEEP MODE.
Greasing to the right
and left Up/Down
link levers
Check if the slant surface of the link lever is
coated by grease or not.
Apply grease.
Assembled
condition of the right
and left Up/Down
link levers
Check if any part exists or not in the vicinity of
link lever, that hampers movement of the link
lever.
Assemble them
correctly.
(10-1-2) Up/Down mechanism
Assembled
condition of
the peripheral
mechanism of the
link lever
Is the mechanism assembled so that the link
lever is connected to the planetary driving gear?
Assemble them
correctly.
Right and left link
levers
Check if the link lever is set in the correct
position that enables the specified engagement
of gears.
(Check if the link lever is set in the wrong
position that results in the wrong engagement of
gears by several teeth.)
Assemble them
correctly.
Check item
Check work
Action to be taken
at NG
(10-1-3) Sensor check
Up/Down sensor
lever (unified
structure with the
left link lever)
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the left
link lever.
Up/Down sensor
Confirm that the sensor signals are normally
detected by using the SWITCH SCAN function
of the self-diagnostic mode.
Check if the SCAN state changes or not when
the incoming light is interrupted/passed by using
a piece of paper or the like for the transparent
type sensor.
Replace the
high voltage
board.
(10-2) Error occurs during the Down movement of the ID unit
Check item
Check work
Action to be taken
at NG
(10-2-1) Check the mechanical load during the Down movement
Mechanical load
during installation
and removal of the
ID unit
Check if abnormal heavy load is applied when
removing the ID unit.
Replace the ID
unit, or replace
the right/left side
plate.
Greasing to the right
and left Up/Down
link levers
Check if the slant surface of the link lever is
coated by grease or not.
Apply grease.
Assembled
condition of the right
and left Up/Down
link levers
Check if any part exists or not in the vicinity of
link lever, that hampers movement of the link
lever.
Assemble them
correctly.
