Adjust The Touch Panel (Maintenance Mode 78) - Brother DCP-J552DW Service Manual

1.3.31 Adjust the Touch Panel (Maintenance mode 78)

<Function>
This function adjusts the detection area on the touch panel.
<Operating Procedure>
(1) Press the [7] and [8] keys in this order in the initial stage of the maintenance mode.
The adjustment screens shown below appear on the LCD.
(2) Touch the symbols on the touch panel with a stylus in the order of top-left, bottom-left, bottom-
right, top-right, and the center.
After a symbol touched disappears, touch the next one.
After the fifth symbol (center) is pressed, the "OK" appears if the adjustment is normally
completed. After approx. three seconds, the machine returns to the initial stage of the
maintenance mode.
Note • Do not use tools other than a stylus designed for touch panels. Especially, never use a
pointed one, e.g., a screwdriver. Using such a tool damages the touch panel.
• Do not touch the touch panel with fingers. The contact area of a finger is too large to adjust
the touch panel precisely.
• If no keys are pressed for one minute in the above procedure or you press the [Stop] or [X]
key, the machine returns to the initial stage of the maintenance mode.
• If the touch panel is improperly pressed or a wrong point is pressed, "ERROR" appears on
the LCD. After approx. three seconds, the screen returns to the state in step (2). Start
pressing the five symbols again from the first one (top-left).
• If "ERROR" appears on the LCD, check the panel flat cable for a connection failure,
breakage, or short-circuit. If "ERROR" continues to be displayed without any of such
problems, replace the control panel ASSY.
5-65
Confidential