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2 Content
When a key is pressed, its color changes and the key catch sound is
made.
The keys to be checked and their positions are as shown below.
ESC
F4
7
8
4
5
1
2
0
3 End
Press the ESC key to terminate the test.
3-7. TOUCH PANEL DIAGNOSTICS
The touch panel and its controller are checked. Communication with the
controller is performed by the 8250 built in the gate array PSC2.
The controller diag check, the touch keypad test, and the linearity test
are performed.
The initial display is as follows:
Touch Panel Diagnostics
Controller
Diag Test
Touch Key Pad Test
Linearity
1) CONTROLLER DIAGNOSTICS TEST
1 Checking content
After initializing the controller, the diagnostic command is executed.
The procedures are as follows:
• One byte of sample data (FFh) is sent and a wait state of 100ms
is made.
• The reset command (80h) is sent and a wait state for the end
code (2 bytes: 90h and 00h) from the controller is made.
• The diagnostic command (2 bytes: 89h, any one-byte data) is
executed, and a wait state for the end code (3 bytes: 90h, return
code, any one-byte data) is made.
• If an error occurs the error display is made with the return code.
* To exit from the controller diagnostic test, press the Esc key dur-
ing the wait state for the end code response.
Return code
0Ah
ROM error
0Bh
RAM error
0Ch
Panel voltage error
0Dh
Reserve
0Eh
EPROM write error
0Fh
EPROM read error
10h
EPROM check sum error
Back
F5
F10
Delete
Space
9
Tab
6
L-Shift
3
L-Ctrl
Space
L-Alt
Enter
Content
UP-5900VS DIAGNOSTICS SPECIFICATIONS
2 Display
Controller Diag Test
Pass!!
or
ROM Error!!
RAM Error!!
PANEL Voltage Error!!
EPROM Write Error!!
EPROM
Read Error!!
EPROM SUM Error!!
3 Terminating method
After the test result is displayed, press the Esc key to terminate and
return to the Touch panel diagnostics menu.
2) TOUCH KEY PAD TEST
1 Checking content
The driver function call is used. The
corners of the LCD sequentially.
(In the sequence of upper right, upper left, lower left, lower right.)
When the
is touched by the operator, the buzzer sounds and
the screen turns to
2 Display
3 Terminating method
Touch all four
return to the Touch panel diagnostics menu.
3) LINEARITY TEST
1 Checking content
Red lines are displayed at both sides of the blue line at the center.
The operator must touch the blue line without touching the red lines
and drag from top to bottom.
The touched part of the blue line is changed to white.
If the red line is touched, an error message is issued.
2 Display
Linearity
Test
Complete!
(Error!!)
Displayed after termination.
3 Terminating method
Press the Esc key to terminate and return to the Touch panel diag-
nostics menu.
4 – 4
Error!!
Error!!
is displayed at the four
.
Touch Key Pad Test
Touch Cursor !!
areas or press the Esc key to terminate and
About 2cm
About 1cm
Red line
Red line
Blue line
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