One Touch H800 - Troubleshooting Touch Panel Calibration; Troubleshooting Second LCD Panel Failures

FEB-4720 Main Board
CN6 RJ45 connector for VFD customer display or second LCD touch screen.
The port can be used for either a VFD customer display or second LCD touch screen. Since VFD
and second touch screen controller need different DC power (VFD needs DC +12v, touch screen
controller needs DC +5v) the jumpers need to be set accordingly. Please see below for the proper
jumper settings for each.
Mode1 RJ45 connector used for VFD
JP1 JP2
1-2
Short (+12V)
1-2
Short
3-5
Short
4-6
Short
PIN No. Description
1
COM4_SIN
2
COM4_SOUT
3
COM4_DSR
4
COM4_DTR
5
GND
6
GND
7
+12V
8
+12V
Mode2 RJ45 connector used for touch screen (factory default setting)
JP1 JP2
2-3
Short (+5V)
1-3
Short
2-4
Short
PIN No. Description
1
COM4_SIN
2
COM4_SOUT
3
COM4_DSR
4
COM4_DTR
5
COM4_RTS
6
GND
7
COM4_CTS
8
+5V
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