Thermal Arc PRO-WAVE 300 TSW, Руководство по обслуживанию

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PRO-WAVE 300TSW
7-8 August 10, 2005
E. Connection between
High Frequency H.F.
Unit and Current
Limiting Resistor R2.
E. Check that the quick-disconnect terminals from R2
are inserted onto the terminals of H.F.
Unit correctly and completely. Confirm there are no
short circuits, burnt or broken wires
between the H.F. unit and R2.
F. Connection of AC1 and
AC2 to High
Frequency Unit
terminals.
F. Check that the quick-disconnect terminal AC1 from
busbar at Transformer T1, T2 secondary and AC2
from CN10 on PCB2 (WK-4983) are inserted onto
the terminals of H.F. Unit correctly and completely.
Confirm there are no short circuits, burnt or broken
wires.
G. Wire AC1 connection
from the H.F. Unit
to Transformer T1 and
wire AC2
Connector plug
connection to PCB2
(WK- 4983).
G. Check wire AC1 and connection to Transformer T1 is
connected firmly. Check that wire AC2 at plug
connector at CN10 on PCB2 (WK-4983) is
connected firmly.
H. H.F. Points Gap. H. Check H.F. Points. Refer to Section 0.
I. Resistor R2 short or
open circuit. I. Replace Resistor R2 if faulty (blown, burnt, cracked
etc).
J. Voltage is not present
between terminals AC1
and AC2 at H.F. Unit.
J. Check that voltage at AC1 and AC2 at H.F. Unit is
approx 140VAC. If not check relay RY3
refer to item K below.
K. Defective HF relay RY3
on PCB2 (WK-
4983).
K. Check that relay RY3 on PCB2 (WK-4983) contacts
close when the trigger switch is
depressed in HF TIG mode, if relay does not work
then replace PCB2 (WK-4983).
L. Defective HF Unit. L. Remove the quick-disconnect terminals from the HF
Unit terminals AC1 and AC2. If the HF
Unit terminals between AC1 and AC2 test short
circuit replace the HF Unit.
M. Defective Coupling Coil. M. Check the Coupling Coil and replace if necessary.
5. Front Control Panel
does not light when
the machine is
turned on but the
Cooling Fan is
rotating. A. PCB plug connections
from PCB5 (WK-
4919) to PCB6 (WK-
4971).
A. Check that all four connectors between PCB5 (WK-
4919) and PCB6 (WK-4971) are firmly
connected. Check the condition of the pins on the
connectors and the connectors themselves,
if any bent pins or damaged connectors are found
replace the suspect PCB.
Possible Cause Remedy Problem