Temperature Sensor - Samsung SR-L676EV Service Manual

6. Temperature Sensor

R2-ROOM
R1-ROOM
THERMISTOR
F-ROOM
THERMISTOR
R / DEF - SONSOR
THERMISTOR
F / DEF - SONSOR
1) The sensor uses the characteristics of thermistor. If temperature goes higher, resistance goes
lower. On the contrary, if temperature goes lower, resistance goes higher.
2) MICOM input voltage is counted by sensor as follows.
R
TH
V X Vcc
=
F
R + R
TH 24
3) For the resistance information on temperature and MICOM input voltage, please refer the
conversion table. (Page. 41)
Samsung Electronics
Vcc
CON2
4 4
Vcc
3 3
2 2
1 1
Vcc
CON3
1 1
Vcc
2 2
3 3
Vcc
4 4
5 5
6 6
"A"
(V : 5V, R
CC TH
R301
10K-F
R303
10K (F)
R305
10K (F)
R307
10K (F)
R309
10K (F)
Vcc
R311
10K (F)
( Air Sensor)
When Sensor is open
MICOM input "HIGH"
: Sensor reisitance)
R302
10K C301
104
R304
10K C302
C09
104
R306
10K
C303
104
R308
10K
C304
104
R310
10K
C305
104
R312
10K
C306
104
When sensor is cut off
MICOM input "LOW"
60
P64
59
P63
62
P66
61
P65
58
P62
63
P67
21