Panasonic F-VXK70A Service Manual page 16

5. Troubleshooting Guide
Corrective Maintenance
Fault Phenomena:1,Air Volume Indicator Light Flashing
Cause:1,Motor's rotating speed is abnormal.
Substitute Part: Motor,Power Circuit Assembly
Check if the motor lead wire terminals disconnect
with the power circuit assembly
Normal
Rotating blade by hand and check the motor
shaft lock
Normal
In running condition to check the CN4 Terminal
voltage
Normal
Run the machine
Normal
Unplug&plug in and operate the
machine
2,Machine out of operation
2,Motor out of operation
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
In checking mode to check
the whole machine
Reconnect the motor lead wire terminal
on the power circuit assembly
Eliminate any blade contact or
foreign object
Abnormal
Abnormal
Motor rotating heavily
Replace the power circuit assembly
Replace the motor assembly
Abnormal
Replace the motor
assembly
Replace the diagnosed
defective parts
15