Table of Contents
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MAIN PWB
Is the connection loose?
No
Main PWB
Is the voltage between
pin 3 and pin 4 of CON5 0V
or 5V?
Pin3 WH/
RD
Pin4 BO
Receiver Voltages
Test Point
Result
pin3 To pin4
0 V or 5 V
No
Reconnect
Yes
Replace
Yes
MAIN PWB
(Position No
: 500A)
- 33 -
Main PWB
Is the voltage between
pin3 and pin5 of CON5 0 V
or 5 V?
Pin3 WH/
Pin5 WH/
Transmitter Voltages
Test Point
Result
pin3 To pin5
0 V or 5 V
No
After plug in,
If Er-CO is disappeared,
Explain to the customer!
Replace
Yes
MAIN PWB
(Position No
: 500A)
RD
BK
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