dr.master wrote: I have repaired hundreds of such devices where clients have done just that.
Either you have the carcasses mixed with the decongestant or you are very lucky
I was troubled by your statement, but I found it. However, you are wrong, although "You've repaired hundreds of such devices, where customers did just that.", But still wrong, and I'm sure nothing will happen to the printer. I am sure from my own experience because I have been using it for several years and nothing happens.
In support of the link to the instruction manual:
http://download.brother.com/welcome/doc002809/cv_dcp315w_pol_busr.pdf Plus a quote from this manual to prove that you are wrong.
"
6 On / Off It allows you to turn the device on and off. Press the On / Off button to turn on the device. Press and hold the On / Off button to turn on the device. The power off message will be displayed on the LCD screen for a few seconds, then the screen will turn off.
If
the device is turned off, it will periodically clean the print head, to maintain print quality.
To extend the life of the print head, ensure the best ink cartridge performance and maintain print quality, the machine should always be plugged in. " So it is as I wrote. You can turn it off as long as the printer is connected to the power supply, i.e. the power plug in the socket.