Brother HL-1240 - Manual (Page 42)

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Test Print Mode
The printer has the following test print modes. Follow these steps:
1.
Make sure that the front cover is closed.
2.
Hold down the control panel button and turn on the power switch. Keep the button
depressed until the
Drum LED comes on.
The Drum LED illuminates to indicate that the printer is in the test print mode.
3.
Release and then press the button again to execute the test print or hold down the
button to select another option as shown in the table below and release the button to
execute the selected option.
LED Lit Choice Function
Drum Test sample page The printer prints a test sample page.
The printer returns to the ready status after
printing.
Ready Print Config &
Print Fonts I The printer prints the current configuration
of the printer and a list of the internal fonts.
The printer returns to the ready status after
printing.
Alarm Factory Reset The printer is restored to the factory setting
and permanent fonts and macros are
cleared.
The printer returns to the ready status after
printing.
Data Hex Dump Print The printer can print data as hexadecimal
values so that you can check data errors and
problems. To exit from this mode, you
have to turn off the printer.