Hitachi UX Twin Nozzle Service Manual page 286

6.2.28 Makeup Level Sensor Broken (3)
Makeup Level Sensor
Broken (3).
Go to "Level sensor confirmation"
screen and check if all sensors
contained in Makeup reservoir work
properly.
Turn OFF
power.
Any disconnection or
poor connection is found
at CN13 connector on
EZJ133 board or CN1 or
CN4 connector on
EZJ138 board?
No
Does the connection
harness have
electrical continuity?
Yes
Replace the sensor block
of Makeup reservoir.
No
Replace EZJ133 board. *1
[Caution]
If Makeup Level Sensor Broken (3) is issued, the machine stops ejecting ink and becomes Fault status.
(*1): When you replace EZJ133 board, refer to
EZJ133 board]
[Caution]
Be sure to check that there is no wrong connection of harnesses by
[Connector numbers and Identifying method of harnesses]
referring to
"3.3.20 Electrical Connection Diagram".
Yes
Remove the connector once and
reconnect it.
No
Replace the connection harness.
Yes
Restart IJ printer and go to
"Level sensor confirmation"
No
screen and check if all sensors
in Makeup reservoir work
properly.
6-44
[Replacement procedures of
"3.3.1 EZJ133 board (MPU board)".
in
Yes
END
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