Once inside the Simulation (SIM) menu, you can reset the specific maintenance counter to clear the error: This is the Maintenance Counter reset menu.
: This code often appears alongside Code DK , which refers to the Drum for Black . If you see both, it’s usually more efficient to service the entire black imaging kit at once.
Before replacing hardware, perform a full power cycle: sharp copier error code mck
When this code displays on your Sharp MX or BP series device, it means the black main charger unit has reached its life expectancy. Using the device after this message appears may result in gray backgrounds, streaks, or poor image density on your black-and-white prints. Common Causes
Using third-party or refilled toner cartridges can cause the toner density sensor (TD sensor) to read incorrectly. If the sensor cannot detect the correct magnetic charge of the developer, it triggers MCK as a failsafe. Once inside the Simulation (SIM) menu, you can
One of the most prevalent causes of the MCK error is the use of non-genuine or third-party toner. Sharp machines are engineered to work with specific chemical compositions of toner.
To avoid recurring MCK errors:
A: Rarely. Toner is powder; the developer is a mechanical unit. MCK specifically points to the developer, not the toner bottle. However, a completely empty toner bottle can cause the error indirectly.
In the context of Sharp copiers, the MCK error is almost exclusively related to the or, in some specific models, the Developer Unit Assembly . Specifically, MCK often denotes a Motor Lock or a Communication Error regarding the toner cartridge detection or the developer unit rotation. Before replacing hardware, perform a full power cycle: