LG LSC27990TT Service Manual page 10

MICOM FUNCTION
1-2. Display Second Function
1. Door Alarm Buzzer Mute Mode
Press button to the buzzer on or off.
2. Demo Mode
Demo mode is available for displaying the refrigerator in a sales setting or similar condition.
It allows the display, dispenser, lights, and fan to operate without running the compressor.
To enter the DEMO mode, press and hold the TEMPERATURE and
Ding~ sounds in the lock status.
To exit the DEMO mode and return to normal operation, press and hold the TEMPERATURE and
simultaneously for 5 seconds until the Ding~ sounds again in the lock status.
The refrigerator will default to the NORMAL mode (DEMO mode OFF) if the power fails.
2. LCD Check Mode
Press TEMPERATURE and
4. Communication Data Check Mode
Press MENU and button simultaneously for 6 seconds in the lock status.
LCD Check Mode
Demo Mode
Communication Data Check Mode
button simultaneously for 1 second in the lock status.
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Door Alarm Buzzer
Mute Mode
button simultaneously for 5 seconds until the
button