Hitachi UX Twin Nozzle Service Manual page 275

6.2.19 Ambient Temperature Sensor Fault
Ambient Temperature
Sensor Fault
Disconnect the EZJ133 board
CN38 connector and reconnect it.
Does the fault recur?
Yes
Replace the print head. *1
Does the fault recur?
Yes
Replace the EZJ133 board. *2
6.2.20 Cooling Fan Fault
Cooling Fan Fault
Disconnect the EZJ133 board
CN29 connector and reconnect it.
Does the fault recur?
Yes
Replace cooling fan.
Does the fault recur?
Yes
Replace the EZJ133 board. *2
(*1)： When you replace the printhead, refer to
(*2): When you replace EZJ133 board, refer to
[Caution]
No
Be sure to check that there is no wrong
connection
[Connector numbers and Identifying method of
harnesses]
Diagram".
No
Resume the
operation.
(*1): When you replace DC fan, [Replacement
(*2): When you replace EZJ133 board, refer to
[Caution]
Be sure to check that there is no wrong connection of
No
harnesses by referring to
Identifying method of harnesses]
Connection Diagram".
No
Resume the
operation.
6-33
"4.13 Print Head Replacement Procedure".
[Replacement procedures of EZJ133 board]
"3.3.1 EZJ133 board (MPU board)".
in
of harnesses by
"3.3.20 Electrical
in
procedures of DC fan] in "3.3.17 DC fan".
[Replacement procedures of EZJ133 board]
"3.3.1 EZJ133 board (MPU board)".
[Connector numbers and
referring to
Connection
in
"3.3.20 Electrical
in