Hitachi UX Twin Nozzle Service Manual page 333

6.5.9 Freeze of display
*) "Freeze of display" means the condition that the touch screen
operation is not available without error message indication.
Freeze of display
Turn OFF and ON the power
Can the touch screen be
operated normally?
Download the latest software
Can the touch screen be
operated normally?
Remove CN6 of EZJ128 board
once and reconnect it.
Can the touch screen be
operated normally?
Remove CN1 of EZJ133 board
and CN1 of EZJ128 board once
and reconnect those connectors.
Can the touch screen be
operated normally?
Replace the touch panel
Can the touch screen be
operated normally?
Replace EZJ133 board.*1
Can the touch screen be
operated normally?
Replace EZJ128 board.*2
switch.
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
6-91
(*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
(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
Diagram".
Resume the
operation
EZJ128 board
Connection