LCD Screen display problem:
The LCD display problem can be cause by LCD screen broken, LCD cable broken or motherboard malfunction.
NB: A printer is the printer which is not working. B printer is working properly.
1. LCD Screen:
Cause: The LCD screen is broken.
Examine: Swap A LCD screen with B LCD screen in B Printer. After swap LCD, the LCD screen works normally in B printer then your LCD is not broken.
2. LCD Cable:
Cause: The LCD cable is broken.
Examine: Swap A printer LCD cable with B printer LCD cable in B printer. After swap LCD cable, the LCD screen works normally then LCD cable is not broken.
Cause: Firmware in motherboard is not working properly or wrong firmware.
Process to reinstalling firmware. Check the Reinstalling firmware document.
After reinstalling firmware LCD screen still did not display properly or blank then motherboard is broken.
Cause: The Motherboard is broken or malfunction.
Examine: Replace LCD screen and LCD cable of A printer with B printer in A printer. After replace, the LCD and Screen is not working in A printer then motherboard is malfunction firmware problem.
In other way, replace A printer LCD screen and LCD cable with B printer in B printer. After replace, the LCD work normal in B Printer then the motherboard is malfunction or firmware problem.
Please follow the above steps. Any other problems and questions, contact us at firstname.lastname@example.org