Hitachi UX Twin Nozzle Service Manual page 295

6.3.8 Target Sensor Fault
Target Sensor Fault
Is the target sensor fault
function required?
Yes
Is the "Sensor out timer"
setting is greater than
necessary for the sensor
normal ON time?
Yes
Does the sensor turn
ON and OFF?
Yes
Replace the EZJ127 board.
If the problem is
not fixed
Replace the EZJ133 board.*1
1
(*1): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 board] in "3.3.1 EZJ133 board (MPU
board)".
[Caution]
Be sure to check that there is no wrong connection of harnesses by referring to [Connector numbers and Identifying
method of harnesses] in "3.3.20 Electrical Connection Diagram".
No
From "Print specifications"
screen, set the value of
"Target sensor timer" to
"0000".
No
No
Clean the sensor to
eliminate any obstacle.
6-53
Select a setting that is
greater than necessary.
Is there any dirt
Yes
buildup or other
obstacle on the sensor?
No
Replace the sensor.
Clear the fault.
Resume the
operation.