Emerson Vilter Vission 20/20 Operation And Service Manual page 217

Appendix A • Vission 20/20 Troubleshooting Guide
The panel is taking a long time
to boot and start, sometimes
doesn't start at all
Blue or white screen at boot up
The screen is black
The screen is unresponsive or
slow to touch
The on-screen cursor doesn't
follow the user's finger
Vission 20/20 boots up but
all data temperatures and
pressures are zeroed and do
not update.
A - 2
Table A. Vission 20/20 Troubleshooting Guide (2 of 3)
Problem
See solutions for "Vission 20/20 does not boot up,
no lights in any of the boards"
Check the flash card's socket
Check the battery's main board socket
Check the I/O board cable connectors
Reboot the 20/20
Change the flashcard (part number 3485FC)*
Reboot the 20/20
Check the 5 and 12 VDC. If the wrong voltage is
detected, adjust the potentiometer. If this doesn't
fix the problem, replace it. The part number of the
power supply is 3485K
If the touchscreen is indeed bad, replace it with part
number 3485J
If it's slow, make sure the Trending graph is turned
off.
Recalibrate the touchscreen, go to Configuration
page 2, click on the Calibrate button. The calibration
mode requires the operator to touch the four
corners of the touchscreen and then the accept
button.
Check analog board jumpers to make sure proper
node addresses are set up on all boards. Physically
inspect power and communication jumper cables
to make sure they are inserted properly and
completely. Two LEDs on all boards show the status
of the communications for the board. LED1 is on
when a command is received at the board from the
single board computer (SBC), and LED2 is on when a
response is sent from the board to the SBC.
Solution
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7