Drawell DW-TY-9900, Operation Manual

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31
Chapter 6 Common Fault Diagnosis Analysis and Elimination
Failure Phenomenon Cause Analysis Elimination
Method
Turn on the power
switch, the indicator
light is not bright or
the filament of the
tube is not bright.
Power box 2A, 5A fuse blown Replace the fuse
The cooling water tank pump is not turned on
Turn on the water
pump and check if
the water pressure
is sufficient
The argon cylinder valve is not opened or the
argon gas is exhausted Open the argon
valve or change the
cylinder
When the high
voltage is off, the off
indicator does not
light up
Damaged indicator
Replace the "high
voltage off" button
(the light is inside
the button)
The high-voltage electromagnetic contactor is
damaged, or the auxiliary contact wiring is
disconnected/falling off, etc. Replace the
contactor, or
restore the normal
connection after
finding the wiring
fault
High voltage cannot
be turned on
Unplug the
high-voltage line on
the high-voltage
board of the power
box to see if the
high-voltage switch
can be turned on
No
High voltage
board failure
Contact the
manufacturer to
replace the
high-voltage board
The power
resistance in the
high frequency
box is damaged Replace the power
resistor after
confirmation
(contact the
manufacturer for
accessories)
Damaged tube Contact the
manufacturer to
replace the tube
Yes
High voltage filter
capacitor is
damaged Contact the
manufacturer to
replace the filter
capacitor
Damaged choke
coil or
high-voltage
silicon stack Contact the
manufacturer to
replace damaged
parts
The capacitor in the high-frequency box is Contact the