New Pba- Main Pcb - Samsung DMR78 Series Service Manual

6. PCB Diagram

6-2. New PBA- Main PCB

Location Description
1 PBA Power (120V)
2 12V, DC GND, Power Relay Driver, Heater Relay Driver, Half Load
Sensor, Turbidity Sensor, Rinse Aid Sensor
3 Low Water Level Sensor, Overflow Sensor, Cold Water Counter,
Leakage Sensor, Temperature sensor, Door Sensor
4 Half Load Relay (only DMR77, DMR78)
5 Dispensor Driving Relay
6 Drain Pump Driving Relay
6-2
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1
2 3
4 5 6 7 8 9
11
10
Location Description
7 Inlet Valve Driving Relay
8 Circulation (Wash) Motor Driving Relay
9 Vent Motor Driving Relay
10 Electric Driving connector
11 Micom Writer Connector
12 Display LED Driving Connector
18
17
16
15
14
13
12
Location Description
13 Display LED Driving Connector (only DMR77, DMR78)
14 Touch-Key, LED Driving, 5V, DC GND (only DMR77, DMR78)
15 Touch-Key, LED Driving, 5V, DC GND
16 Display LED Driving Connector
17 Display LED Driving Connector (only DMR77, DMR78)
18 LED, 5V Driving