Sharp PN-L803C Service Manual page 182

■SENSOR CHECK
Perform Sensor Check
Connect the PC and the
monitor by the video
* Connect the video cable and the USB cable at the same side.
and the USB cable.
Turn on the power of
*Monitor must display the screen with full HD in Dot by Dot.
the monitor and display
However, there is no problem that the screen is displayed with the clone mode or dual mode.
the PC screen on the
monitor.
Check that the button next to
"PN-L803C series" turns to
Yes
"found" on the Sensor check
tool.
No
Click "Check" button.
* The log file is saved.
No
Yes
Is there open error or short
circuit error.
Analyze the log file deta.
* Send the log file.
Perform Sensor Check again.
"Not found" is displayed ：The connection of the monitor cannt be detected.
"many" is displayed ：The several monitors are detected. Connect one target monitor to check.
There could be harness disconnection, harness cut-line, sensor cut-line or sensor short circuit.
When the error still occurs even if replace the harness, replace the Touch Panel Unit.
PN-L803C/80TC3 TROUBLESHOOTING 7 - 9
When the "found" is not displayed even if the port of USB cable,
there could be a problem on the route of the USB connection.
When "Not found" is still displayed even if the harness between
the Main PWB and the Touch Panel Unit, replace these PWB and parts.