Connection On Pcb - Sanyo MCO-18AIC Service Manual

Connection on PCB

The following shows connections of connector (CN) on main PCB.
Connector
Power transformer
Between #1 #2, AC8.5V
CN1
#3
#4 and #5,
Power supply
CN2
Between #1 #2(GND), DC5V
CN3 CO sensor
2
#1 #2
CN4 #3 #4
#5 #6
CN6 Door switch
CN8 Switch, display PCB (CN101)
#1 #2 CO
CN9
#3 #4 CO
Remote alarm output
CN10
#1 #2 Open during normal operation
CN11 Communication board (option)
#1 #2 Auto zero air pump
CN12
#3 #4 Air pump
CN13 Buzzer
CN14 UV lamp relay (option)
CN15 Water sensor
CN101 Display PCB (CN8)
The following shows connections of connector (CN) on power PCB.
Connector
CN301 Main PCB
#1: Heater for heat control (5pcs)
CN302 #3: Bottom heater (4pcs)
#5: Front panel heater, Door heater (2pcs)
#1: CO
2
C303
#3: Agitating fan motor
Connects to
GND
AC18V
Overheat protect sensor
Temperature sensor
CO box temp. sensor
2
valve
2
auto changer valve (option)
2
hinge sub heater
Connects to
A, B heater
To supply the power to PCB.
To supply the power AC36V for Auto
zero air pump.
To supply the power to PCB.
Input from CO
To measure the temperature of each
parts.
To detect the door opening.
To control CO
Output of remote alarm contact
For alarm
To check water level in humidify pan.
To control heater
To control the sensor BOX temperature.
To control the pump for circulation.
23
Use
sensor.
2
valve ON and OFF.
2
Use