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ARCMASTER 160TS
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4. “Operating Panel Failure” (LED’s do not
light properly or welding setting cannot be
established.)
Cause:
Occurs when there is a connection failure
among PCB1 (WK-5466), PCB5 (WK-5448),
PCB6 (WK-5449) and PCB1 or PCB5 or PCB6
are defective.
Verification/Remedy:
a) Verify the harness connection between
CN101 on PCB1 (WK-5466) and CN1 on
PCB4 (WK-5449).
Verify a secure connection of the harness and
the connections between CN101 on PCB1 and
CN1 on PCB5.
Contact the manufacture
r
if you find any broken
connectors or damaged wiring harnesses.
b) Verify the connection between PCB5 (WK-
5448) and PCB4 (WK-5449).
Verify that there
are no
loose
screws
or
harness
connect
ions
between the
PCB4 and PCB5.
Replace PCB4 and PCB5 if necessary. Refer to
section 12.03.5, 12.03.6.
5. “High Frequency Output Failure” (Unit does
not generate High Frequency.)
Cause:
Occurs when the H
igh Frequency
unit
(HF UNIT1) is
defective or blown.
Verification/Remedy:
Caution
Read and understand this entire section
before proceeding. Extreme personal harm
and test equipment damage will occur if the
procedures are not performed accurately.
The unit will generate a High Voltage
component that can cause extreme personal
harm and test equipment damage.Capacitors
installed inside the Welding Power Source
are electrically charged for a while after the
Mains ON/OFF switch or distribution panel
switch has been turned off. Before inspecting
the inside of the Welding Power Source,
leave it for about 5 min. after switching off
power for discharging the capacitors, and
then remove the top and side panels.
a) Verify the connection between High
Frequency Unit (HF UNIT1) and Coupling
Coil (C.C.).
Verify the connection between the HF UNIT1
and C.C.
.
Verify that the quick-disconnect
terminals are inserted onto the terminals of HF
UNIT1 (TB5- TB6) correctly and completely.
Verify there are no short circuits, burnt or
broken wires at C.C..
Replace C.C.. Refer to section 12.03.9.
b) Verify the connection between High
Frequency Unit (HF UNIT1) and the current
limiting resistor (R6 on WK5609 PCB3).
Verify that the quick-disconnect terminals are
inserted onto the terminals of HF UNIT1 (TB3-
TB4) correctly and completely.