Hitachi UX Twin Nozzle Service Manual page 296

6.3.9 Target Spacing Too Close
Target Spacing
Too Close
Are there more than four
workpieces (print targets)
between the sensor and
print head?
No
Is the sensor chattering?
No
Replace the EZJ133 board.*1
6.3.10 Print Data Changeover In Progress S/M/V
Print Data Changeover
In Progress
Resume the
operation.
[ SUPPLIMENT ]
The signal of the next print object is detected during the printing
preparation time for the current print object.
Enter print object detection signal with the interval longer than the
print preparation time (print interval).
Yes
Decrease the clearance
between the sensor and
print head and reduce the
number of workpieces
between the sensor and
print head to four or less.
。
Yes
Ensure that the sensor does
not chatter.
(*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".
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