Hitachi UX Twin Nozzle Service Manual page 256

6.2.7a (N1)Deflection Voltage Leakage
(N1)Deflection Voltage
Leakage
Is the ink or makeup
deposited on the deflection
electrodes and their
surrounding sections?
No
Is any foreign matter
deposited between the
deflection electrodes
and their surrounding
sections?
No
Are there any tapering
spikes of ink generated
between the deflection
electrodes?
No
Yes
Blow air over the
deflection electrode area
because the ink and
makeup may remain.
▪ Press the Clear key to clear
the fault.
▪ Press the Start up key to
restart the IJ printer.
Is the alarm issued?
No
Resume the
operation.
Yes
Yes
Remove
foreign matter.
Yes
Execute "Nozzle Backwash1"
on "Circulation control"
screen. And then check the
excitation voltage and ink
pressure of Nozzle1.
Is the alarm issued?
No
Resume the
operation.
Is the ink recovered
properly with the gutter
Yes
hole of Nozzle1 NOT filled
by the ink which is being
recovered?
Yes
1
6-14
Does the ink stream
Yes
enter the center of the
gutter?
No
Adjust the ink stream position1.
Thoroughly remove
ink/makeup deposits and
allow the affected area to
dry.
▪ Press the Clear key to clear
the fault.
▪ Press the Start up key to
restart the IJ printer.
Yes
Is the alarm issued?
No
Resume the
operation.
No
See section "6.5.18, No ink
suction from gutter".
Yes
Is the alarm issued?
No
Resume the
operation.