HL-3450CN
![]() |
FAQs & Troubleshooting |
Vertical black lines or streaks appear on the printout.
![](/g/b/img/faqend/faq00000006_019/sg/en/90026/27_pq_04.gif)
Please check the following points:
- Identify the missing color and replace that toner cartridge.
To see how to replace the toner cartridge, click here.
- Replace the OPC belt cartridge.
To see how to replace the OPC belt cartridge, click here.
Content Feedback
To help us improve our support, please provide your feedback below.