If nothing is displayed on the LCD at power–up or if the LCD is locked
with “GRAPHIC IS READY.” or the slot status screen displayed, the
probable causes include the following:
D The LCD cable or backlight cable is not connected.
D The necessary software is not installed.
D The motherboard, display control card, CPU card, or inverter board is
defective.
D The LCD unit is not connected to the power supply.
D The LCD cable or backlight cable is not connected.
D The LCD unit is not connected to the CNC with the optical cable or
the cable is broken.
D The necessary software is not installed.
D The main CPU board, display control card, or LCD unit is defective.
If “GRAPHIC IS READY.BOOT START”. is displayed, this indicates
that the display control circuit has started up normally but that the CNC
has not started up.
Connector for connecting
the backlight cable
Inverter printed circuit
board
Connector for connecting
the LCD cable
Motherboard (without a PC)
11.7
NOTHING IS
DISPLAYED ON THE
LCD WHEN THE
POWER IS TURNED
ON
Causes and actions
D For the LCD–mounted
type
D For the stand–alone type
[For the LCD–mounted
type]
11. TROUBLESHOOTING
GFKE-0222-EN
750