FAQ
Posted: Tue May 05, 2015 2:53 pm
1. How to control your printer via LCD?
You can refer to this page:
http://www.geeetech.com/wiki/index.php/ ... rol_on_LCD
1. LCD screen shows nothing or 4 lines of blocks, only blowing.
It is contrast issue. Rotate the screw above SD card slot on the back side of LCD screen.
2. LCD screen is black, showing nothing nor blowing.
Swap the connection of 2 cables behind the LCD.
3. LCD displays 2 rows of blocks (1st row and 3rd row).
1) Check if the LCD cable is loosen.
2) It is communication issue when uploading the firmware, so some codes are not successfully uploaded to mainboard, try to upload the firmware again.
Welcome everyone to complement!
You can refer to this page:
http://www.geeetech.com/wiki/index.php/ ... rol_on_LCD
1. LCD screen shows nothing or 4 lines of blocks, only blowing.
It is contrast issue. Rotate the screw above SD card slot on the back side of LCD screen.
2. LCD screen is black, showing nothing nor blowing.
Swap the connection of 2 cables behind the LCD.
3. LCD displays 2 rows of blocks (1st row and 3rd row).
1) Check if the LCD cable is loosen.
2) It is communication issue when uploading the firmware, so some codes are not successfully uploaded to mainboard, try to upload the firmware again.
Welcome everyone to complement!