Hitachi UX Twin Nozzle Service Manual page 344

6.5.19 Power Restoration Procedure
Is the EZJ133board
CN1 connector
disconnected or in
poor contact?
Is the EZJ128 board
CN1 connector
disconnected or in
poor contact?
Replace the EZJ133 board.*1
Does the fault recur?
Replace the EZJ128 board.*2
(*1): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 board] in "3.3.1 EZJ133 board (MPU
board)".
(*2): When you replace EZJ 128 board, refer to [Replacement procedures of EZJ128 board] in "3.2.1 EZJ128 board
(controller board)".
[Caution]
Be sure to check that there is no wrong connection of harnesses by referring to [Connector numbers and Identifying method
of harnesses] in "3.3.20 Electrical Connection Diagram".
Power Restoration
Procedure
No
No
No
Resume the
operation.
Yes
Yes
Remove the connector once and
reconnect it.
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