LG LRBP1031W User Guide - Page 22

F Sensor

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5) TEMP SENSOR CIRCUITS R67 (AN7) CClO_ 223/?[ 7 R65 10 (AN5) R64 (AN4) cc8_ cc71 223 f?[7 CON3 CON101 \\\ T RF3 R19 _ 261KF 2K @ \\\ R16 _,_ "_' \ RF2 26.1KF _RFI R15 _162KF CON4 4_ ] 2 1 RT SENSOR (RT-SENSOR) D SENSOR (DEFROST SENSOR) F SENSOR (FREEZER COMPARTMENT SENSOR) The above circuit reads the surrounding temperature, DEFROSTING temperature and FREEZER ROOM temperature into MICOM(ICl). OPEN or SHORT state of each SENSOR is as follows. SENSOR ROOM TEMPERATURE SENSOR DEFROST SENSOR FREEZER SENSOR CHECK POINT POINT(_Voltage POINT(_)Voltage POINT @Voltage '4ORMAL (_30°C-50°C) 0.5V - 4.5V SHORT 0V OPEN 5V 6) SWITCH INPUT CIRCUIT The following circuit is a test switch input circuit for checking the refrigerator. ICl R56 _s TEST S/W Go - 24 -

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5) TEMP SENSOR
CIRCUITS
R67
(AN7)
R65
(AN5)
R64
(AN4)
CClO_
223/?[
7
\\\
T
RF3
R19
_
261KF
2K
CON3
CON101
RT SENSOR
(RT-SENSOR)
@
\\\
_,_
CON4
RF2
10
R16
26.1KF
cc8_
"_'
4_
D SENSOR
\
(DEFROST
SENSOR)
]
_RFI
R15
_162KF
2
cc71
F SENSOR
(FREEZER
COMPARTMENT
223
f?[7
1
SENSOR)
The above circuit reads the surrounding
temperature,
DEFROSTING
temperature
and FREEZER
ROOM temperature
into
MICOM(ICl).
OPEN or SHORT
state of each SENSOR
is as follows.
SENSOR
CHECK
POINT
'4ORMAL (_30°C-50°C)
SHORT
OPEN
ROOM TEMPERATURE
POINT(_Voltage
SENSOR
DEFROST
SENSOR
POINT(_)Voltage
0.5V - 4.5V
0V
5V
FREEZER
SENSOR
POINT @Voltage
6) SWITCH
INPUT CIRCUIT
The following circuit is
a
test switch input circuit for checking the refrigerator.
ICl
R56
_s
TEST
S/W
Go
- 24 -