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HL-4050CDN
常见问题解答与故障排除
Completely blank or some colors are missing.
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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