System Maintenance
D148 24 SM
Whenever the screen is touched, the display cycles through All-white -> All-black -> All-green
-> All-blue -> End in full screen view, and the display status of each color is visually verified.
By cycling through all the colors, the LCD check is completed, and the display returns to the
self-diagnosis top screen.
4. Speaker check
The following standard sounds are generated according to the button instructions on the
screen.
Frequency: 220 Hz, 440 Hz, 880 Hz, 1760 Hz, 2000 Hz
Sound volume: 16 levels from minimum to maximum
Sounds standard sound by START/STOP toggle switch
5. Wireless LAN check
Changes to a screen for searching wireless LAN access points with Android as standard, and
a communication status check is displayed.
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