1.0 05/05/2013
31
4
．
Circuit board faulty.
5
．
Power
fault/power
interruption.
6
．
Motor button or switch
fault.
7
．
Spindle rotation switch
fault.
8
．
Connection line open/
resistance higher.
9
．
Motor fault.
3
．
Check and find out
plug/socket fault or power
line fault.
4
．
Check circuit board and, if
damaged, replace it with a
new one.
5
．
Ensure power line voltage
and power is energized.
6
．
Replace faulty button or
switch with a new one.
7
．
Rotate switch forward and
backward and replace faulty
with a new one.
8
．
Check for damaged or
disconnected
wires/Reconnect/If
necessary, replace the wire.
9
．
Check/repair/replaceme
nt.
Machine power or power
shortage.
1. Workpiece material
(mainly metal) not suitable
for machining
2
．
Computer circuit board
fault.
3
．
There is mistake in
motor speed regulation
rheostat.
4
．
Motor carbon brush
fault.
5
．
Pulley/sprocket slipping.
6
．
Motor bearing fault.
7
．
Workpiece machined
exceeds machining range
of machine.
8
．
Spindle rotation switch
fault.
1. Select metal suitable for
machining.
2
．
Check computer circuit
board and replace faulty
with a new one.
3
．
Check and test it and
replace faulty with a new
one.
4
．
Remove brush and clean/
replace if damaged.
5
．
Replace loose pulley /
shaft.
6
．
Rotate axis for test, rotary
grinding/loosen
axis,
if
bearing damaged, replace it
with a new one.
7
．
Use sharp tool/adjust to
correct angle/reduce feed
speed/cutting depth and, if
possible, use cooling fluid.
8
．
Rotate switch forward and
backward and replace faulty
with a new one.
