Hitachi UX Twin Nozzle Service Manual page 261

6.2.9 Makeup Low Fault
Makeup Low Fault
Open the maintenance cover.
Is the makeup
reservoir charged
with the makeup?
Yes
Turn OFF the power.
Is the sensor connector
disconnected?
(See the overall wiring
diagram.)
No
Is CN13 or CN22 of the EZJ133
board, CN1, CN2, CN4, or CN5
of or EZJ138 board disconnected?
No
Disconnect the connectors, then
reconnect them (6 connectors).
Is the fault cleared by
power-on reset?
Yes
END
No
No
Yes
Yes
Connect the connector.
No
Is the connection harness
conducting?
OK
Replace the sensor.
Is the fault cleared by
Yes
power-on reset?
No
Replace the EZJ133 board. *1
6-19
Install the new cartridge
bottle, and replenishing
the makeup.
Can the abnormality
be cleared by pressing
the Clear key?
Yes
END
Connect the sensor
connector.
END
NG
Replace the connection harness.
(*1): When you replace EZJ133 board, refer to
[Replacement procedures of EZJ133 board]
in "3.3.1 EZJ133 board (MPU board)".
[Caution]
Be sure to check that there is no wrong
connection of harnesses
[Connector numbers and Identifying method of
harnesses] in "3.3.20 Electrical Connection
Diagram".
by referring to