Kenmore 795.77562600 Service Manual page 28

Main PCB
Is the connection loose?
No
Main PCB
Is the voltage between
pins 2 and pin 3 of
CON5 0V or 5V?
pin2 BO
pin3 BN
Receiver Voltages
Test Point Ressult
pin2 to pin3
0 V or 5 V
Yes
Yes Reconnect
Replace the
No
Main PCB
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Main PCB
Is the voltage between
pin2 and pin4 of CON5
0 V or 5 V?
pin2 BO
pin4 RD
Transmitter Voltages
Test Point Ressult
(1) to (2)
0 V or 5 V
Yes
After plug in,
If Er-CO is disappeared,
Explain to the customer!
Replace
No
Main PCB