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4 auto ice maker – MITSUBISHI ELECTRIC Mitsubishi Home Refrigerator MR-G50J-SS-NZ User Manual

Page 17

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17

MR-G50J-NZ

6-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD

MR-G50J-NZ

(1) Ice making cycle

(2) Automatic ice maker circuit

6-4 AUTO ICE MAKER

CN3A

CN4D

Control board

CN9D

CN8K

CN7S

Water pump motor

LED for bacteria

removal from water

tank

6-pin connector

6-pin connector

8-pin connector

6-pin connector

Ice tray thermistor

Ice making
gear box

M

0
5
4

6
5
4
3
2
1

6
5
4
3
2
1

3
1

8
9

8
9

3
1

6
5
4
3
2
1

6
5
4
3
2
1

6
5
4
3
2
1

6
5
4
3
2
1

3 3

5 5

6 6

9 9

6
5
8
7

6
5
8
7

0
5
4

M

Ice making

compartment

thermistor

Water pipe heater

CN2A

9-pin connector

Ice stock

Ice is stocked in the ice server.
Ice making capacity is about
100 - 120 cubes a day.
Stock capacity of Ice cubes is
about 100 cubes.

Ice ejection

After the detection lever
checks the amount of ice, the
ice tray is rolled over for ice
ejection.

Water supply

The ice tray is filled with water
from the water tank.

Ice making

Ice tray thermistor watches
and controls the ice making
operation.

Control circuit of refrigerator
•Read/control each compartment tempera-

ture (Neuro-fuzzy)

•Control on timers
•Operation control of the parts such as fan

motor or heater, etc. equipped inside/

outside

Inverter control circuit of compressor
•Inverter control of compressor
•Inverter-drive power module
•Detection of bus-bar voltage

Parts outside/inside of Refrigerator

For 325V system
•Compressor

For 230V system
•Defrost heater
•Vegetable compartment heater

1&2

•Rotational heater board
•Divider heater (I/S)
•Water pipe heater
•Refrigerator compartment room light
•Ice making tray heater

For 5V DC system
•Freezer compartment thermistor
•Refrigerator compartment thermistor
•Defrost thermistor
•Slide chilled compartment thermistor
•Door switch (For refrigerator com

partment & ice compartment)

•Ice tray thermistor
•Ice making compartment thermistor
•Vegetable compartment thermistor
•Position-specifying switch in ice

maker gear box

•Versa compartment thermistor

For 12V DC system
•Refrigerator fan motor
•Machine chamber fan motor
•Motor damper
•Ice maker gear box
•Three-way valve
•LED for vegetable compart

ment.

•LED for bacteria removal from

water tank

Operation P.C. board

•Setting up temperature, feature, quick mode and eco mode for each

compartment

•Display of self-check
•Outside air thermistor
•Buzzer

Control board

OA090-1.qxp 06.7.20 9:55 AM Page 17