LG Electronics GR-P227/L227, GR-P257/L257 service manual Explation For Micom Circuit

EXPLATION FOR MICOM CIRCUIT

uTemperature compensation table at the refrigerator is as follows:

Modification
resistance	470 Ω	2 kΩ	3.3 kΩ	5.6 kΩ	8.2 kΩ	10 kΩ	12 kΩ	18 kΩ	33 kΩ	56 kΩ	180 kΩ
Current
resistance
	No	0.5 °C	1 °C	1.5 °C	2 °C	2.5 °C	3 °C	3.5 °C	4 °C	4.5 °C	5 °C
470Ω		[0.9 °F]	[1.8 °F]	[2.7 °F]	[3.6 °F]	[4.5 °F]	[5.4 °F]	[6.3 °F]	[7.2 °F]	[8.1 °F]	[9 °F]
	change	Up	Up	Up	Up	Up	Up	Up	Up	Up	Up
	0.5 °C	No	0.5 °C	1 °C	1.5 °C	2 °C	2.5 °C	3 °C	3.5 °C	4 °C	4.5 °C
2 kΩ	[0.9 °F]		[0.9 °F]	[1.8 °F]	[2.7 °F]	[3.6 °F]	[4.5 °F]	[5.4 °F]	[6.3 °F]	[7.2 °F]	[8.1 °F]
	Down	change	Up	Up	Up	Up	Up	Up	Up	Up	Up
	1 °C	0.5 °C	No	0.5 °C	1 °C	1.5 °C	2 °C	2.5 °C	3 °C	3.5 °C	4 °C
3.3 kΩ	[1.8 °F]	[0.9 °F]		[0.9 °F]	[1.8 °F]	[2.7 °F]	[3.6 °F]	[4.5 °F]	[5.4 °F]	[6.3 °F]	[7.2 °F]
	Down	Down	change	Up	Up	Up	Up	Up	Up	Up	Up
	1.5 °C	1 °C	0.5 °C	No	0.5 °C	1 °C	1.5 °C	2 °C	2.5 °C	3 °C	3.5 °C
5.6 kΩ	[2.7 °F]	[1.8 °F]	[0.9 °F]		[0.9 °F]	[1.8 °F]	[2.7 °F]	[3.6 °F]	[4.5 °F]	[5.4 °F]	[6.3 °F]
	Down	Down	Down	change	Up	Up	Up	Up	Up	Up	Up
	2 °C	1.5 °C	1 °C	0.5 °	No	0.5 °C	1 °C	1.5 °C	2 °C	2.5 °C	3 °C
8.2 kΩ	[3.6 °F]	[2.7 °F]	[1.8 °F]	[0.9 °F]		[0.9 °F]	[1.8 °F]	[2.7 °F]	[3.6 °F]	[4.5 °F]	[5.4 °F]
Refrigerator	Down	Down	Down	Drop	change	Up	Up	Up	Up	Up	Up
(RCR1)	2.5 °C	2 °C	1.5 °C	1 °C	0.5 °C	No	0.5 °C	1 °C	1.5 °C	2 °C	2.5 °C
10 kΩ	[4.5 °F]	[3.6 °F]	[2.7 °F]	[1.8 °F]	[0.9 °F]		[0.9 °F]	[1.8 °F]	[2.7 °F]	[3.6 °F]	[4.5 °F]
	Down	Down	Down	Down	Down	change	Up	Up	Up	Up	Up
	3 °C	2.5 °C	2 °C	1.5 °C	1 °C	0.5 °C	No	0.5 °C	1 °C	1.5 °C	2 °C
12 kΩ	[5.4 °F]	[4.5 °F]	[3.6 °F]	[2.7 °F]	[1.8 °F]	[0.9 °F]		[0.9 °F]	[1.8 °F]	[2.7 °F]	[3.6 °F]
	Down	Down	Down	Down	Down	Down	change	Up	Up	Up	Up
	3.5 °C	3 °C	2.5 °C	2 °C	1.5 °C	1 °C	0.5 °C	No	0.5 °C	1 °C	1.5 °C
18 kΩ	[6.3 °F]	[5.4 °F]	[4.5 °F]	[3.6 °F]	[2.7 °F]	[1.8 °F]	[0.9 °F]		[0.9 °F]	[1.8 °F]	[2.7 °F]
	Down	Down	Down	Down	Down	Down	Down	change	Up	Up	Up
	4 °C	3.5 °C	3 °C	2.5 °C	2 °C	1.5 °C	1 °C	0.5 °C	No	0.5 °C	1 °C
33 kΩ	[7.2 °F]	[6.3 °F]	[5.4 °F]	[4.5 °F]	[3.6 °F]	[2.7 °F]	[1.8 °F]	[0.9 °F]		[0.9 °F]	[1.8 °F]
	Down	Down	Down	Down	Down	Down	Down	Down	change	Up	Up
	4.5 °C	4 °C	3.5 °C	3 °C	2.5 °C	2 °C	1.5 °C	1 °C	0.5 °C	No	0.5 °C
56 kΩ	[8.1 °F]	[7.2 °F]	[6.3 °F]	[5.4 °F]	[4.5 °F]	[3.6 °F]	[2.7 °F]	[1.8 °F]	[0.9 °F]		[0.9 °F]
	Down	Down	Down	Down	Down	Down	Down	Down	Down	change	Up
	5 °C	4.5 °C	4 °C	3.5 °C	3 °C	2.5 °C	2 °C	1.5 °C	1 °C	0.5 °C	No
180 kΩ	[9 °F]	[8.1 °F]	[7.2 °F]	[6.3 °F]	[5.4 °F]	[4.5 °F]	[3.6 °F]	[2.7 °F]	[1.8 °F]	[0.9 °F]
	Down	Down	Down	Down	Down	Down	Down	Down	Down	Down	change

uTemperature compensation at the freezer is performed the same as at the refrigerator. The value for the freezer is twice that of the refrigerator.

uThis circuit enters the necessary level of temperature compensation for adjusting the appliance. The method is the same for every model in this appliance family.

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