Please refer to the serial number first to contact us on support. 
Contact us the error codes or contents for any error.

A serial number is labeled or incised mainly on the lower part of connectors of robot/aligner, and the side of the LED display of a controller.
Error codes are displayed on a controller's LED display.

Recommend once a year, but depends on model type. 
Please confirm the Maintenance manual.

Ensure that the power supply is as specified in the specification.
When the EMG terminal is open, the power will not be turned on.
Please check the interlock function and the power up procedure in the specifications.

Because the controller's power supply has positive and negative polarity, please ensure the polarity is correct before wiring.

You cannot change speed if the input speed value is out of the setting range.
Data writing is required after setting the speed.
Please follow the procedure to write to EEPROM.
See the Instruction Manual as the procedure varies depending on the models.

When the arm is extended, the vertical movement amount is restricted by the setting.
Check the operating range and change the setting of vertical movement amount in accordance with the Instruction Manual.

Because the G-series robot has a movement restriction zone.
Once the arm leaves this zone, the speed will return to normal.