Connections On Pcb; Connection On Pcb - Sanyo MDF-137 Service Manual

Connections on PCB

Connectors on Temp. control PCB
Connector
CN1 Switching power supply
1 +12VDC
3 GND
CN2 MTR-480 Option
CN3 Remote alarm terminal
1 COM
2 N.C.
3 N.O.
CN4 Temp. control relay
#1: +12V
#2: GND
CN5 Display PCB (CN51)
CN6 Display PCB (CN52)
CN7 Temp. sensor
#9 - #10 Temp. sensor
CN8 Battery 6V
Connects to
(When power is not supplied)
(When power is not supplied)
(When temp. control relay is ON)
8
Usage
To supply the power to PCB
Output for remote alarm contact
Open between #1 and #2 when the
power is supplied in normal condition.
#1 and #2 are connected with remote
alarm terminal.
To turn temp. control relay on/off
To connect with each of switches
To connect with each of LED
To sense chamber temperature
To connect with battery for power failure