Sanyo MDF-C8V service manual Connection on PCB

Connection on PCB

Following is the explanation of connections on Main PCB.

Connector	Connects to	Usage	Voltage
CN1	Switching power supply	To supply the power to PCB	#1:12V
CN2	MTR-480（Option）	To connect with interface
	Remote alarm terminal
CN3	#1: COM.	Output for remote alarm contact
	#2: N.O.
	#3: N.C.
	#1-#2: Temp. control relay	To control chamber temperature	#1-#2:12V
CN4		To conduct current to cap. tube	#5-#6:12V
	#5-#6: Fan relay
		heater
CN5	#1, #7: Buzzer	To control with each switches
	#2-#6: Control PCB (CN51)
CN6	Display PCB（CN52）	To connect with each LED
		To control condensing fan motor
CN7	#7-#8: Comp. sensor	by the temperature in comp.
		sensor
CN8	#1-#2: Battery	To supply the power to Main PCB	#2:6V
		during power failure
CN9	Unused
CN11	#1-#3: Temp. sensor	To detect chamber temperature

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