Hitachi UX Twin Nozzle Service Manual page 257

1
Does the IJ printer become
ready when you start it by
pressing the Startup key
with the high-voltage power
supply1 output connector
disconnected?
Yes
Is the high-voltage line dusty?
No
Has the ink/makeup entered
inside the nozzle head rear
cover?
No
Replace the ink.
No
Replace the high-voltage
power supply unit1.
Is the alarm issued?
Replace the EZJ125 board *1
Is the alarm issued?
Replace the EZJ133 board *2
Wipe and clean the dust
Yes
off the line and allow to
thoroughly dry.
Wipe the entered ink/makeup
Yes
away with JK wiper and allow
inside print head rear cover to
thoroughly dry.
(*1): When you replace EZJ125 board, refer to [Replacement procedures of EZJ125
board] in "3.3.5 EZJ125 board (Nozzle1 drive board)".
(*2): When you replace EZJ133 board, refer to
board] "3.3.1 EZJ133 board (MPU board)".
in
[Caution]
Be sure to check that there is no wrong connection of harnesses by referring to
[Connector numbers and Identifying method of harnesses]
Connection Diagram".
6-15
No
Resume the
operation.
Yes
No
Yes
[Replacement procedures of EZJ133
Resume the
operation.
"3.3.20 Electrical
in