Check Lcd Operation (Maintenance Mode 12) - Brother DCP-J552DW Service Manual

1.3.7 Check LCD operation (Maintenance mode 12)

<Function>
This function checks whether the LCD on the control panel works normally.
<Operating Procedure>
(1) Press the [1] and [2] keys in this order in the initial stage of the maintenance mode.
(2) For models with numerical keys
Each time you press the [#] key or the [ ] key, the LCD cycles through the screens as shown
below.
Pressing the [*] or [ ] key returns the LCD display to the immediately preceding screen.
When Screen 12 or 13 displays, pressing the [#] or [ ] key switches to Screen 1.
For models without numerical keys
Each time you press the [Home] key, the LCD cycles through the screens as shown below.
Pressing the [Return] key returns the LCD display to the immediately preceding screen.
When Screen 12 or 13 displays, pressing the [Home] key switches to Screen 1.
(3) Regardless of the display status, pressing the [Stop] or the [X] key returns the machine to the
initial stage of the maintenance mode.
DCP-J552DW/J752DW, MFC-J650DW/J870DW/J875DW
<Screen 1>
Completely blank
<Screen 2>
All black
<Screen 3>
All red
<Screen 4>
All green
<Screen 5>
All blue
<Screen 6>
All gray
<Screen 7>
Red stepwise
<Screen 8>
Green stepwise
<Screen 9>
Blue stepwise
<Screen 10>
White stepwise
<Screen 11>
Image data
<Screen 12>
Stroke detection
5-19
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