Unable to clean error 46

I have brother dcp 6690cw and it said unable clean 46 i want solution for this
thank you so much

This a sensor error,,pls, clean all sensor of your printer

Troubleshooting steps for Error Code 46 on Brother Printers:
At first, go into "Machine Maintenance" mode and work cautiously in this mode without adulterating the settings

? Press Menu key alongside 2,8,6 and 4 numerical keys inside 2 seconds

? In the underlying phase of upkeep mode, press 8 key and after that 0 key. It will get the machine's log data list.

? Press the begin key ordinarily to travel through this rundown and achieve the cleanse counter

? In a similar request press 2,7, 8 and 3 keys to reset the cleanse counter to zero

? Now, come back to the underlying phase of upkeep mode by squeezing "Leave" key

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