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5-1 Trouble Shooting
If your terminal fails to operate correctly, consult the following chart for possible solution
before calling for repairs:
Condition
Nothing showed up on
the screen
The screen suddenly
turns blank and the
power indicator goes off
LAN, USB, RS232
connection poor
The screen is too bright
(too dark).
The screen is shaking or
blinking
Check Point
Check if the all external cable is firmly connected in the socket.
• Check if the Power indicator is lit-up after power button pressed
• Check if the DC power generator provides adequate power to
the terminal
• Make sure that LED indicator is not turned off.
• Make sure the power cable and power generator are working
• Please check the signal cable, make sure each pin has correctly
connected.
• If Ethernet didn't run on Gigabit LAN speed, please check all 10-
pin has been well-connected.
• If USB power is not enough, please take advantage of 2
port to supply adequate power.
• Default RS232 has no +5V, +12V provided. If extra power is
needed, please contact local sales representative.
Check if the brightness or contrast was adjusted too low by Intel
Graphic controlling management.
• Make the space clear around the terminal, exclude the EMI
interference first, normally it has EMI filter and power filter to
isolate the interference.
• Check the grounding Pin has been well grounded to prevent
from noise from same source.
nd
USB
39
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