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TROUBLESHOOTING (FAQ)
PROBLEM SOLUTION
The system keyboard communication is
not worked.
Check the RS-485 communication line.
•
Check the address setup of system keyboard.
Refer to “RS-485 Communication Setup” of “Menu Setup” for the method of address
setup. (see page 22)
•
•
The password in the screen of system log
in is lost.
Supply power to the system keyboard while you are pressing the [MENU] and [ENTER]
buttons on the keyboard simultaneously.
•
Press buttons until the “Beep” sounds.
•
System is reset to the factory default with a “Beep” sound.
•
Log in after the completion of reset. Refer to “Log-in” of “ Instructions” for the method
of login. (see page 14)
•
Replace the LCD panel when its expected life is over.
M