Panasonic EY6405-U1 Service Manual page 8

EY6405-U1 / EY6409-U1 / EY6432-U1
< TROUBLE >
Does not speed-
control or does not
brake.
Even if FET block is defective, it can not be replaced individually.
→ Replace whole switch block.
Remove the FET circuit block and check the lead wire terminals.
These terminals are open normally when there is an open circuit (
between the green and yellow lead wires, and between the blue and
yellow lead wires.
NOTE:
* FET is sensitive against static electricity.
** The resistance value will vary dependent upon the measurement
range of the tester.
<CHECK SWITCH BLOCK.>
< CHECK >
<CHECK FET.>
↓OK
8
< REMEDY >
NO Repair the contact
or replace switch
→ & FET block.
Ω )
NO Replace switch & FET
→
block.