Hitachi IJ PH Service Manual page 188

6.5.9 Freeze of display
*) "Freeze of display" means that the touch screen does not operate
without any error message when the screen is touched.
Freeze of display
Remove the panel
protection sheet.
Does the screen operate
normally?
Turn off and on the power
Does the screen operate
normally?
Disconnect and reconnect the
CN10 of EZJ124 board.
-
Does the screen operate
normally?
System reset with Rescue CF
card.
Does the screen operate
normally?
Replace the EZJ124 board.
Does the screen operate
normally?
Replace the control panel
Yes
No
switch.
Yes
No
Yes
No
Yes
No
Yes
No
assembly.
6-51
Attach the panel protection
sheet correctly.
Resume the
operation