Muratec MFX-1950 - Manual (Page 168)

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Replace the toner cartridge
When the toner runs out, your machine shows “Toner Empty” on the LCD and it cannot
print any page until the toner cartridge is replaced to the new one.
To replace the toner cartridge:
1
Open the front cover.
2
Turn the toner cartridge locking lever to the left (unlock position).
3
Pull the used toner cartridge out.