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6-75
6.4.13b (N2) Ink Pressure Low
(*1): When you replace pressure reducing valve,
refer to “4.3 Pressure Reducing Valve
Replacement Procedure”.
(*2): When you replace pressure sensor2, refer to
“4.6.2 Pressure Sensor (Nozzle 2) Replacement
Procedure”.
Replace ink filter.
No
No
Yes
Can the pressure be adjusted by
the pressure reducing valve?
Yes
Resume the operation.
Adjust the pressure to
standard value
by the pressure reducing
valve.
Replace the pressure reducing valve.*1
Replace the pressure sensor2.*2
Is the warning released?
Can the pressure be adjusted by
the pressure reducing valve?
Can the pressure be adjusted by
the pressure reducing valve?
No
No
Yes
Yes
Replace or repair the troubled
solenoid.
Replace MGV filter in Nozzle2.
Replace or repair the troubled
solenoid.
Replace or repair the
supply pump.
No
Yes
Yes
No
(N2) Ink Pressure Low
Confirm the indicated value and standard value of ink
pressure in Nozzle2 on “Operation management” screen.
Is the difference of
±
0.01MPa
or more in indicated value of
ink pressure between Nozzle1
and Nozzle2?
Do MV1 and 2 operate?
The indicated value of ink pressure
in Nozzle2 exceeds the lower limit?
(Standard value
x 0.90 >
Indicated value
)
No
Yes
Yes
Yes
No
No
Does MV29 operate?
Does ink flow into main ink tank
when pumps MV1 & MV6 are
operated?
Summary of Contents for UX Twin Nozzle
Page 1: ...Service Manual HITACHI Printer UX Twin Nozzle Model Revision February 2017 Version A ...
Page 106: ...3 30 Circuit diagram of EZJ127A board ...
Page 123: ...3 47 Circuit diagram of EZJ129 board ...
Page 131: ...3 55 3 3 20 Electrical Connection Diagram ...
Page 151: ...4 17 7 Reset the time of the replaced solenoid to 0 on the Parts usage time management screen ...
Page 352: ...7 1 7 Attached Drawing 7 1 Circulation System Diagram Circulation System Diagram ...
Page 354: ...7 3 7 3 Electrical Connection Diagram Electrical Connection Diagram ...