LG G5200, Service Manual

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10. ENGINEERING MODE
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10.3 MF Mode [MENU 3]
This manufacturing mode is designed to do the baseband test automatically. Selecting this menu
will process the test automatically, and phone displays the previous menu after completing the test.
A. All auto test [3-1]
LCD, LED, Backlight, Vibrator, Buzzer, and Key Pad are tested in order for a certain time.
B. LED [3-2]
From red LED to Violet LED are turned on one by one for about 1 second, then off.
C. Backlight [3-3]
LCD Backlight and LED Backlight are on for about 1.5 seconds at the same time, then off.
D. Buzzer [3-4]
This menu is to test the volume of Melody. It rings in the following sequence.
Volume1 . Volmue2 . Volume3 .Volume0 (mute) . Volume4 . Volume5
E. Vibrator [3-5]
Vibrator is on for about 1.5 seconds.
F. LCD [3-6]
Main LCD screen resolution tests horizontally and vertically one by one and fills the screen.
G. Key pad [3-7]
When a pop-up message shows 'Press Any Key', you may press any keys including side keys, but
not [Soft2 Key]. If the key is working properly, name of the key is displayed on the screen. Test will
be completed in 15 minutes automatically and the screen displays the previous one.
H. Sub LCD [3-8]
Sub LCD screen resolution tests horizontally and vertically one by one and fills the screen.