![Print Quality Problem - White lines down tha page](/g/b/img/faqend/faq00000213_025/as_ot/en/24673/WhiteLine_VR.jpg)
Please check the following points to solve the problem:
- The toner cartridge may be damaged. Put in a new toner cartridge.
Please refer to the instructions, "REPLACE TONER".
- The drum unit may be damaged. Put in a new drum unit.
Please refer to the instructions, "REPLACE DRUM".
- If the LEDs indicate REPLACE TONER (Continue mode) like the image below, put in a new toner cartridge.
Please refer to the instructions, "REPLACE TONER".