Daewoo FRS-U20DD. Service Manual page 39

8-5. Main PCB ( None Inverter Compressor models )
4
No Item
1 Make refrigerator
cooler
2 Relay Power
Controller
3 Fan Power
Controller
4 Electric Current Fuse
5 Time Shortening
Switch
6 Regulator IC(5V)
6
•When consumer claim about the refrigerator's temperature follow this.
Change the resistance ( cutting jumper )
FRS-U20**
Cutting of J18
Cutting of J18 & J19
• Receive signal ( 5V ) from the MICOM.
Deliver signal (12V) each electric device.
▷Check input & output voltage of MICOM and IC7
F R C
* To check when each device does not work (250V,3.15A)
* To shorten time in PCB checkup
( 1 time pushing is 1 minute.)
* Make voltage ( 12V → 5V ) to MICOM.
Voltage check of IC#6 (Input :12V,Output : 5V)
39
1
MICOM
2
Check Point
Remark
down by 1.5℃
down by 3℃
•To check input & output voltage of Fan
▷#2 : Input
▷#5 : Output
3
5