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J8-2000 MCU Toner Cartridge CRUM Data Write Failure
Data write error occurred in the XERO CRUM Tag in the Toner Cartridge.
1. Check the Toner Cartridge for failure or foreign substances.
2. Check the installation of the Toner CRUM PWB.
3. Check the connection of the MCU PWB P/J414.
4. Check the connection of the Toner CRUM PWB P/J217.
5. Check the wire between P127 and J414 for an open circuit or a short circuit.
6. Measure the voltage between the MCU PWB J414-6 (+) and the GND (-) . The voltage must be approx. +5VDC.
7. Replace the Toner CRUM PWB and the MCU PWB.