LG LRSC26922SW - Communication Circuit

1-13. Communication circuit
The following communication circuit is used for exchanging information between the main MICOM of the Main PCB and the
dedicated MICOM of the LED (LCD) Display PCB.
A bi-directional lead wire assembly between the two boards is required for the display to function properly.
Poor communication occurs if a continuous information exchange fails to last more than 2 minutes between main MICOM of
main PCB and LCD (LED) dedicated MICOM for LCD (LED) control of display PCB.
LRSC269
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EXPLANATION FOR MICOM CIRCUIT
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ICEBEAM
COOLING
OFF
CUBE
FILTER
MONTH
EXPRESS/JET FRZ DISPENSER FREEZER REFRIGERATOR FILTER/LIGHT LOOK
ROOM TEMP
DISPENSER & KEY
F
WATER 5
4
3
2
1
CRUSH
F F
3 SECS
PWB ASSEMBLY DISPLAY
Main MICOM LCD(LED) dedicated MICOM
DC 12V
GND
Transmission (error status)
Reception (notch status)
Main PCB L/Wire FD/H(4-wires) Display PCB