LG KP105 Service Manual page 104

10.4.6 MF TEST
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.
10.4.6.1 All auto Test
LCD, Backlight, Vibrator, Buzzer, Key Pad
10.4.6.2 Backlight
LCD Backlight is on for about 1.5 seconds at the same time, then off.
10.4.6.3 Audio
This menu is to test the volume of Melody. It rings in the following sequence.
Volume 1, Volume 2, Volume 3, Volume 0 (mute), Volume 4, Volume 5.
10.4.6.4 Vibrator
Vibrator is on for about 1.5 seconds.
10.4.6.5 LCD
Main LCD screen resolution tests horizontally and vertically one by one and fills the screen.
10.4.6.6 Key Pad
When a pop-up message shows 'Press Any Key', you may press any keys.
If the key is working properly, name of the key is displayed on the screen.
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Only for training and service purposes
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Selection
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10. ENGINEERING MODE
1. Auto
2. GSM850
3. PCS
LGE Internal Use Only