LG LSC27990TT Service Manual page 18

MICOM FUNCTION
2-15. Failure Diagnosis Function
1. Failure diagnosis facilitates service when a failure code shows during product operation.
2. When a failure is detected, the buttons are deactivated.
3. If a failure code is released, the MICOM resets and normal operation continues.
4. The failure code is displayed on the display screen. All display graphics that are not part of the failure code are turned off
(1) GR-G277STSA(LSC27990TT)
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