HL-4050CDN
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常见问题解答与故障排除 |
Completely blank or some colors are missing.
![](/g/b/img/faqend/faq00000002_007/cn_ot/en/7114/bllclrmss1.gif)
Please check the following points.
- Identify the missing color and make sure that the toner cartridge is installed properly.
- Put in a new toner cartridge.
To see how to replace the toner cartridge, click here.
- Put in a new drum unit.
To see how to replace the drum unit, click here.
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