Troubleshooting, 1 power indication, Troubleshooting -1 – MITSUBISHI ELECTRIC F940GOT-SWD-E User Manual
Page 95: Power indication -1
Troubleshooting 6.
6-1
6.
Troubleshooting
This section describes troubleshooting during operation.
6.1
Power indication
When an abnormality has occurred, check the following points.
The POWER LED in the GOT is lit by the 5 V power supply inside the GOT. When the POWER
LED is extinguished, nothing is displayed on the screen or no key is accepted, the power sup-
ply may be insufficient.
Especially when the power is supplied from the FX Series PLC, the following points are sus-
pected.
1) Much sensor current is used.
2) Many extension blocks are used.
Disconnect all equipment except the GOT from the +24 terminal in the FX Series PLC, and
check whether the GOT operates normally.
When the display screen is dark, adjust "LCD CONTRAST" on the SET-UP MODE screen.
When the screen is still dark, it is recommended to replace the backlight (F9GT-40LTS).
F940GOT-SWD-E/LWD-E