7-2-5 TEMPERATURE SENSOR CIRCUIT
The upper CIRCUIT reads REFRIGERATOR temperature and DEF-SENSOR temperature for defrosting into MICOM.
OPENING or SHORT state of each TEMPERATURE SENSOR are as follows.
7-2-6 DOOR OPEN DETECTING CIRCUITS
- 26 -
SENSOR
CHECK POINT
NORMAL(-30 °C ~ 50 °C)
SHORT-CIRCUITED
OPEN
Refrigerator Sensor
POINT
Voltage
0.5 V ~ 4.5 V
0 V
5 V
Defrosting Sensor
POINT
Voltage
A
B
MEASURING POINTS
Freezer / Refrigerator Door
CLOSED
OPEN
IC1 (Pin No. 8)
5 V
0 V
Summary of Contents for GR-472
Page 32: ...7 5 MAIN PWB ASSEMBLY AND PARTS LIST 7 5 1 MAIN PWB ASSEMBLY u u GR R472 R522 32 ...
Page 33: ...7 5 2 MAIN PWB ASSEMBLY u u GR S472 S522 33 ...
Page 34: ...7 5 3 REPLACEMENT PARTS LIST u u GR R472 R522 34 ...
Page 35: ...7 5 4 REPLACEMENT PARTS LIST u u GR S472 S522 35 ...
Page 36: ...7 5 5 PWB ASSEMBLY DISPLAY AND PARTS LIST u u GR R472 R522 36 ...
Page 37: ...7 5 6 PWB ASSEMBLY DISPLAY AND PARTS LIST u u GR S472 S522 37 ...
Page 38: ...7 6 1 PWB DIAGRAM u u GR R472 R522 38 ...
Page 39: ... 39 ...
Page 40: ...7 6 2 PWB DIAGRAM u u GR S472 S522 40 ...
Page 41: ... 41 REF TEMP CONTROL ...
