Block Diagram Of Printed Circuit Board; Auto Ice Maker - Mitsubishi Electric MR-G50J-SS-NZ Service Manual

6-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD

MR-G50J-NZ
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

6-4 AUTO ICE MAKER

MR-G50J-NZ
(1) Ice making cycle
Water supply
The ice tray is filled with water
from the water tank.
(2) Automatic ice maker circuit
CN2A
CN3A
CN7S
CN4D
CN9D
CN8K
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 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
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
Ice ejection
After the detection lever
checks the amount of ice, the
ice tray is rolled over for ice
ejection.
5 5
3 3
0 0
5 5
4 4
6 6
9 9
6 6
5 5
8
8
7 7
Control board
Inverter control circuit of compressor
•Inverter control of compressor
•Inverter-drive power module
•Detection of bus-bar voltage
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
6 6
LED for bacteria
5 5
Water pipe heater
removal from water
4 4
tank
3 3
2 2
M
Water pump motor
1 1
6-pin connector
9-pin connector
6-pin connector
8 8
9 9
6 6
6 6
5 5 5 5
4 4 4
4
3 3 3
3
2 2
2 2
1 1 1
1
8-pin connector 6-pin connector
17
Ice making
Ice tray thermistor watches
and controls the ice making
operation.
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 making
3 3
compartment
1 1
thermistor
Ice tray thermistor
Ice making
gear box
M