LG LSXC22326, Руководство по обслуживанию

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Micom Circuit description
Temperature compensation from cut
JCF3
JCF4
-1
-1
-2
Undercool compensation
JCF3 JCF4
CUT
CUT
CUT
CUT
Freezer temperature
compensation
0 (Factory default)
-1
-1
-2
Remarks
2. Freezer undercool compensation circuit
►Above option circuit compensates the freezer temperature by simply cutting the circuit during the service.
2-1. Communication circuit and connecting L/wire between main PCB and display PCB
As the communication circuit, the following circuit exchanges information required between main MICOM of main PCB and
MICOM exclusively for LED for LED control of display PCB.
Sending/Receiving L/wire is required with DC12V required to operate the display PCB.
Communication error occurs when the information exchange between main MICOM of main PCB and MICOM exclusively
for LED for LED control of display PCB is disconnected for more than 30 seconds
Main PCB Display PCB
L/Wire FD/H(4 wires)
DC 12V
GND
Receive (NO TCH condition)
Send (Error condition)
Main MICOM
MICOM exclusively
for LCD