If you replace toner cartridges, image drums or other consumables with any non-genuine ones, “Unknown Consumable detected” appears and the device stops working.
To continue printing by using non-genuine consumables
When “Unknown Consumable detected” appears on the touch panel and the device stops working, you can follow the procedure below to switch to an operable state.
1.Turn off the device.
2.Press and hold the [Clear] button to turn it on.
3.Once “RAM CHECK 100%” appears on the touch panel, release the [Clear] button.
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