Communication Circuit And Connection L; Wire Between Main Pcb And Display Pcb - LG LSC26945TT Service Manual

EXPLANATION FOR MICOM CIRCUIT
1-11. Communication circuit and connection L/Wire between main PCB and display PCB
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 fail to continue for more than 2 minutes between main
MICOM of main PCB and LCD (LED) dedicated MICOM for LCD (LED) control of display PCB.
Main MICOM
(1) LSC26945TT/ LSC26945SW
Main PCB L/Wire FD/H(4-wires)
Transmission (error status)
CUBE
EXPRESS
WATER
CRUSH
JET
DC 12V
LCD(LED) dedicated MICOM
GND
Reception (notch status)
FILTER
DIGITAL CONTROL
FILTER RESET
C C
HOLD 3SECS ROOM TEMPERATURE
F F
3 SECS
FRZ TEMP REF TEMP
DISPENSER & BUTTON
- 39 -
Display PCB
C
F
LOCK