Thermal Arc 185 AC, Руководство по обслуживанию

Страница: 56 / 122

10-6
May 22, 2006
ARCMASTER 185 ACDC 200 ACDC
6. E12 "Main Supply Under Voltage"
Cause
Main supply voltage occurs in about 150V or less.
Verification/Remedy
a) Verify main supply voltage.
• Perform what is described in the section
"Verification of the Power Supply Voltage".
Refer to section 10.07.
b) Replace PCB4 (WK-4819).
• Replace PCB4, when abnormalities occur, even
if carries out the above-mentioned
verifications. Refer to section 11.3.5.
7. E81 "Abnormal Input Voltage"
Cause
The detection circuitry of the main supply voltage
is abnormal.
Verification/Remedy
a) Verify main supply voltage.
• Perform what is described in the section
"Verification of the Power Supply Voltage".
Refer to section 10.07.
b) Confirm a secure connection of the harness
wired between CN2 on PCB3 (WK-5548) and
CN1 on PCB17 (WK-4917).
• Re-install the harness with a secure
connection.
• Contact the manufacturer if you find any
broken connectors or a damaged wiring
harness.
c) Verify PCB4 (WK-4819) and replace it if
necessary.
• Check whether there are any abnormalities on
the appearance of PCB4.
• Replace PCB4. Refer to section 11.3.5.
8. E82 "Rated Voltage Selection Circuit abnormality"
Cause
Rated voltage selection circuit inside the Welding
Power Source is not functioning properly.
Verification/Remedy
a) Verify the wiring harness and connection of
CN4 on PCB4 (WK-4819).
• Re-install the harness with a secure
connection.
• Contact the manufacturer if you find any
broken connectors or a damaged wiring
harness.
b) Verify PCB4 (WK-4819) and replace it if
necessary.
• Check whether there are any abnormalities on
the appearance of PCB4.
• Replace PCB4. Refer to section 11.3.5.
9. E83 "Abnormalities in Mains Supply Voltage
Detection"
Cause
Abnormalities, such as an input voltage detection
circuit
Verification/Remedy
a) Verify main supply voltage.
• Perform what is described in the section
"Verification of the Power Supply Voltage".
Refer to section 10.07.
b) Confirm a secure connection of the harness
wired between CN2 on PCB3 (WK-5548) and
CN1 on PCB17 (WK-4917).
• Re-install the harness with a secure
connection.
• Contact the manufacturer if you find any
broken connectors or damaged wiring
harness.
• When the PCB fixed screw is loosening, it
fastens certainly.
c) Verify PCB4 (WK-4819) and replace it if
necessary.
• Check whether there are any abnormalities on
the appearance of PCB4.
• Replace PCB4. Refer to section 11.3.5.