Hex Dump Mode; Indication Of The Firmware Version - Brother MFC-9420CN Service Manual

8.1.4.20 Hex Dump Mode

Function
This function is to print the data in hex and check the descriptions of the data or error.
How to enter the Hex dump mode
Turn the power supply of the machine ON while holding down the Job Cancel key. Keep
pressing the Job Cancel key until "Hex dump mode" appears on the LCD.
Exiting from the Hex dump mode
Turn the power supply of the machine OFF/ON.

8.1.4.21 Indication of the Firmware Version

Function
This function is to indicate the firmware version or checksum of the machine.
How to indicate the firmware version
Press the * and # keys at the same time. The firmware version and checksum are indicated
on the LCD.
The machine returns to the normal standby status after 10 seconds.
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