Sharp UP-3301 Service Manual page 12

4. Touch panel/VGA coordinates
• Touch panel configuration (unit: mm)
243.8(x)
229.4(x2)
18.2(x1)
• Touch panel coordinates
(0,0) Initial coordinates
(0,0) Touch panel coordinates (4096x4096)
(0,0) VGA coordinates
Initial coordinates (xi, yi) 0 Touch panel coordinates (xt, yt) conversion
xt = (xi - 4096*x1/x)*(x / (x2-x1))
yt = (yi - 4096*y1/y)*(y / (y2-y1))
Touch panel coordinates (xt, yt) 0 VGA coordinates (xv, yv) conver-
sion
xv = xt * 640 / 4096
yv = yt * 480 / 4096
• Coordinates of correction points
Initial coordinates
393, 402 2080, 402
393, 2048 2080, 2048
393, 3697 2080, 3697
Touch panel coordinates
100, 100 2048, 100
100, 2048 2048, 2048
100, 3996 2048, 3996
VGA coordinates
16, 14 320, 14
16, 240 320, 240
16, 465 320, 465
(640,480)
(4096,4096)
(4096,4096)
3767, 402
3767, 2048
3767, 3697
3996, 100
3996, 2048
3996, 3996
624, 14
624, 240
624, 465
UP-3301US SERVICE PRECAUTION
– 10 –
2. IPL (Initial Program Loading) function
1) Introduction
The application software of the UP-3301 is written in the flash ROM.
In the following cases, the writing procedure of the application software
into the flash ROM is required
• When the flash ROM is replaced with a new one. The service part
flash ROM does not include the application software in it.
• When IPL writing is required because of a change in the software.
*The service part of the main PWB unit includes the flash ROM with
the application software written in it. There is no need for writing the
application software when replacing the main PWB unit.
2) IPL procedure
There are two ways of IPL procedures.
• IPL from EPROM via ER-A7RS2
• IPL from PC via the POSUTIL.EXE PC utility.
The detailed descriptions on the above procedures are given below.
3) IPL from P-ROM via ER-A7RS2
(1) Install the two master ROMs to the IC socket (IC12, IC13) on the
ER-A7RS2.
Master ROM -1 : VHI27801RXXXX
Master ROM -2 : VHI27801RXXXX
(2) IPL switch on the ER-A7RS2 : Set the IPL SW to ON position.
MASTER
EP ROM2
P-ROM -2
MASTER
EP ROM1
P-ROM -1
(3) Install the ER-A7RS2 in the UP-3301. (The UP-3301 power should
be turned OFF.)
(4) Turned on the power of the UP-3301.
(5) The IPL procedure is started.
After the buzzer sounds terminated, the IPL procedure finished.
(6) Turn OFF the power of the UP-3301.
(7) Remove the ER-A7RS2 from the UP-3301.
(8) Perform a Master reset.
IPL SW
OFF
ON