Hitachi IJ PH - Page 189

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6.5.10 Coordinate misalignment of the touch panel
*) Key input on the touch panel is possible (key input sound is heard),
but shows the state that is out of a coordinate.
Is coordinate adjustment possible?
Coordinate misalignment of the touch panel
Yes
No
Resume the
operation
Yes
Is there the key input sound?
No
No
Does the fault recur?
Yes
In a power supply OFF state,
disconnect and reconnect the CN5 of
EZJ124 board.
No
Is the power voltage of
EZJ124board (5V)
4.75V≦VCC≦5.25V?
Test point of VCC is TP11.
（Test pin is not mounted）
Yes
No
Does the
fault recur?
Yes
Replace the touch panel
In a power supply OFF state,
disconnect and reconnect the
CN3 of EZJ93 board and
CN3 of EZJ124 board.
Does the fault recur?
Replace multiple power
supply.
Replace the EZJ124 board.
Yes
No
Adjust a coordinate.
See 6.5.9 Freeze
of display
Confirm the output voltage
of multiple power supply..
Is the output voltage
4.84V≦VCC≦5.36V?
(Pin No. 1 to 3 of the CN2
on multiple power supply)
Replace the EZJ93 board.
No
Yes