Limitations - Canon imageRUNNER ADVANCE 4551i Service Manual

NOTE:
Response when the HDD mirroring kit is installed in the Host Machine
Content displayed in the SMART information is the diagnosis result of the master HDD.
To check which HDD is the master HDD, turn the power OFF and then ON and check whether the green LED on the Mirroring
PCB is lit.
In conjunction with the HDD's access status, the HDD with the green LED (ChA or ChB) that performs high-speed blinking first
will be the master HDD. Conversely, the HDD with the green LED that does not light in this status will be the backup HDD.

Limitations

• If there is a problem with the test name (SN-1, 2, 8, 12), this diagnosis tool itself will not startup.
• When no PCBs are installed on the Main Controller PCB, the following judgment results are displayed.
Standard PCB: [NG]
Optional PCB: [OK]
However, [NO] is displayed in detailed error information for optional PCBs.
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6. Troubleshooting