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TRANS 2nd part A is composed of the RELAY-operating POWER(12Vdc) and power (5Vdc) supplying POWER to MICON
and IC.
TRANS 2nd part B is composed of the CIRCUIT supplying POWER(12Vdc) to DISPENSER PUMP MOTOR.
Voltage of each part is as follows.

VA1 is a part preventing from over-voltage and noise.

CIRCUIT for occuring CLOCK which motivates the internal local element of IC1 to transmit and receive an information and
BASIC TIME for calculating time. Use a proper form for OSC 1. Because in case that SPEC is changed, the calculated time
in IC1 is changed or IC 1 isn't able to operate.

- 23 -

POWER

3

1

VA1

SVC471

D14A

CM1

223

D1~D4

1N4004*4

TRANS

D6~D9

1N4004*4

CE1

2200µF

/35V

CM2

223

CC1

223

A

CON1

B

+

CE6

1000µF

/35V

+

CE7

470µF

/25V

+

CE2

1000µF

/25V

+

CC2

223

CE3

470µF

/25V

CE4

220µF

/16V

CE5

220µF

/16V

CC3

223

10mH

IN404

+

+

+

IC2

R3

10K

IC3

L1

42 VDD

Varef

IC1

(MICOM)

Vss(Vass)

TEST

22

21

17

D5

7812

IC4

7812

7805

PART A

PART

both ends of VA1

both ends of CM1

both ends of CM2

both ends of CE2

both ends of CC2

VOLTAGE

220 Vac

14 Vac

17 Vdc

12 Vdc

5 Vdc

PART B

PART

both ends of 2nd part

both ends of CE6

both ends of CE7

VOLTAGE

13 Vdc

15 Vdc

12 Vdc

OSC1

CST4.OOMGW

R9

19

20

1M

XIN

XOUT

IC1

(MICOM)

- 32 -

• The resistance of SENSOR has ±5% common difference.
• Measure the resistance of SENSOR after leaving it over 5 mintues in measureing temperature.

This postponing is necessary because of perceiving speed.

• Measure the F-SENSOR, SUPER FROST SENSOR, R1, R2-SENSOR after disconnect CON5 of PWB ASSY, MAIN.

TEMPERATURE SENSOR

RESISTANCE OF FREEZER

RESISTANCE OF REFRIGERATOR

(SUPER FROST) SENSOR

(DEFROST) SENSOR

- 20 ˚C

22.3 K

Ω

77 K

Ω

- 15 ˚C

16.9 K

Ω

60 K

Ω

- 10 ˚C

13.0 K

Ω

47.3 K

Ω

- 5 ˚C

10.1 K

Ω

38.4 K

Ω

0 ˚C

7.8 K

Ω

30 K

Ω

+ 5 ˚C

6.2 K

Ω

24.1 K

Ω

+ 10 ˚C

4.9 K

Ω

19.5 K

Ω

+ 15 ˚C

3.9 K

Ω

15.9 K

Ω

+ 20 ˚C

3.1 K

Ω

13 K

Ω

+ 25 ˚C

2.5 K

Ω

11 K

Ω

+ 30 ˚C

2.0 K

Ω

8.9 K

Ω

+ 40 ˚C

1.4 K

Ω

6.2 K

Ω

+ 50 ˚C

0.8 K

Ω

4.3 K

Ω

All the internal parts of MICOM(IC 1) return to the early condition when the early power ON or apply power again in MICOM
after temporary power failure. As a result, all the functions operate according to the early condition. At the early period of
power ON the "LOW" voltage is applied in the RESET terminal of MICOM for the fixed time. The RESET terminal is 5V
during the general operation.

- 24 -

18

IC7

CC5

223

CC6

223

R10

4.7K

RESET

ICI

(MICOM)

KIA7045P

* When the DOOR of freezer room or refrigerator room is opened, FAN MOTOR i s stoped immediately, then when the door

is closed, the FAN MOTOR is operated after 20 sec.
(FAN MOTOR 20 sec delay)

- 25 -

D13

IN4148

RY-4

G5N-1

RY-5

G5N-1

R49

R4

BUZZER

470

12K/5W

D14

IN4148

1K

R5

13

14

4

15

2

6

8

8

4

3

R7

100

CC4

223

R6

10K

3

D13

IN4148

RY-3

G5N-1

12

5

1

2

3

D11

IN4148

RY-2

G5N-1

11

6

4

D10

IN4004

RY-1

G2R-1A(10A)

10

7

9

IC5

KID65003AP

5

F.I.R LAMP

PTC START

POWER

DOOR S/W–R

LAMP–R

LAMP–F

D15

IN4148

COOLING-FAN

OLP

COMP

MODEL

OPTION

M

DOOR S/W-F

D17

IN4007

CON 3

D16

1

2

56K/2W

DAMPER

MOTOR

FUSE–M

CON 2

F–FAN

2400 rpm

2800 rpm

DEF–HEATER

R8

IC6

TLP621(BL)

IN4007

7

9

5

3

1

5

3

1

M

M

P70

P72
(PDO/PWM)

P77

P76

P75

P74

P73

IC1

(MICOM)

RUNNING CAPACITOR

STARTING CAPACITOR

KIND OF LOAD

COMP,

FAN MOTOR

DEFROSTING HEATER

ELEC. DAMPER

COMP COOLING FAN

2800rpm 2400rpm

MEASURING POINT(IC3)

NO.10

NO.11

NO.12

NO.14

NO.13

ON

below 1V

STATE

OFF

12V