Hitachi UX Twin Nozzle Service Manual page 294

6.3.7 Improper Sensor Position
Is the "Repeat count"
is set to "0000" from
"Print specifications"
screen?
No
Set the "Repeat count"
to "0000".
Resume the
operation.
(*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".
Improper Sensor Position
No
Is the repeat printing
function required?
Yes
Replace the EZJ133 board.*1
Yes
Is there an excessive
clearance between the
print head and print target
detector?
No
Is the print start signal
No
chattering?
Yes
Ensure that the print
start signal does not
chatter any longer.
6-52
Yes
Decrease the
clearance between
the print head and
print target
detector.