Hitachi IJ UX, Service Manual

Page: 252 / 308

6-34
6.3.8 Target Sensor Fault
Target Sensor Fault
Is the target sensor fault
function required?
From the printing
specifications screen, select a
“Target sensor timer” setting
of “0000”.
Is the “Sensor out timer”
setting is greater than
necessary for the sensor
normal ON time?
Select a setting that is
greater than necessary.
Does the sensor turn
ON and OFF?
Clean the sensor to
eliminate any obstacle.
Replace the sensor.
No
Yes
No
If the problem is
not fixed
Yes
No
No
Yes
Replace the EZJ127 board.
Replace the EZJ126 board.
Yes
Clear the fault.
Resume the
operation.
Is there any dirt
buildup or other
obstacle on the sensor?