Hitachi IJ PH Service Manual page 167

1
Is any vibration or shock
applied to the IJ printer,
print head, or print head
cable during operation or
startup?
No
Does the IJ printer become
ready for printing when you
eject ink and start the IJ
printer with the high-
voltage power supply unit
high-voltage output
FASTON terminal
disconnected?
No
Has the ink/makeup ink reached the
print head rear surface?
(See the section on print head operation
and replacement.)
No
Replace the high-
voltage power supply.
If the problem is
not fixed:
Replace the EZJ106 board.
If the problem is
not fixed:
Replace the EZJ93 board.
If the problem is
not fixed:
Replace the EZJ98 board.
If the problem is
not fixed:
Replace the print head.
Yes
Eliminate the cause of
vibration or shock.
Yes
Replace the high-voltage
power supply unit.
Yes
Wipe the entered
ink/makeup ink away with
JK wiper and allow the
print head rear surface to
thoroughly dry.
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