8-5. Main PCB

- Basic Model

1

6

3

2

5

4

NO

ITEM

 

 

 

 

 

CHECK POINT

 

REMARK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Compensation of

 

 

 

 

 

 

* Used when making R-temp. down

 

 

 

 

 

J1

 

 

 

 

 

 

 

Weak Refrigeration

 

 

 

 

 

to compensate for weak refrigeration

 

 

 

 

Making R-temp

 

 

J2

 

 

 

without changing FCP temp. setting.

 

 

 

 

cooler

 

 

 

 

 

Cutting of J1 ; down by 1.5

 

 

 

 

 

 

 

 

 

 

 

Cutting of J1, J2 ; down by 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

Relay Power

* To check normal voltage of each electrical devices

 

 

 

 

Controller

 

to & from Mi-com.

 

 

 

 

 

 

 

 

 

Check input & output voltage of MICOM and IC7

 

 

 

3

Fan Power

 

 

 

 

 

* To check input & output voltage of Fan

 

 

 

 

Controller

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

#2 : Input

 

 

 

 

 

 

F

R

C

 

 

 

#5 : Output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

Electric Current Fuse

* To check when each device does not work (250V,3.15A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

Time Shortening

* To shorten time in PCB checkup

 

 

 

 

Switch

(Pressing 1 time is regarded as 1 minute has passed.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

Regulator IC(5V)

* To check voltage of MICOM and IC

 

 

 

 

 

Voltage check of IC#6 (Input :12V,Output : 5V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

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Daewoo frs20 manual Main PCB, Check Point Remark