Brother MFC-7290 - If You Replace the Panel Unit; Operational Check of LCD (Function Code: 12); Operational Check of Control Panel Buttons (Function Code: 13)

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5. IF YOU REPLACE THE PANEL UNIT
<What to do after replacement>
• Operational check of LCD (function code: 12)
• Operational check of control panel buttons (function code: 13)
5.1 Operational Check of LCD (Function Code: 12)
Check performance of the LCD in accordance with "1.3.7 Operational check of LCD
(Function code: 12)" in Chapter 5.
5.2 Operational Check of Control Panel Buttons (Function Code: 13)
Check performance of the control panel buttons in accordance with "1.3.8 Operational check
of control panel buttons (Function code: 13)" in Chapter 5.