Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility
for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Welder has some/ no output and no con-
trol. Auxiliary output OK.
No welding output. Auxiliary output OK.
No auxiliary power.
Welder load drops off.
Wire feeder does not work when control
cable is connected to 14 pin connector.
No output in Pipe Mode.
VRD Lights don’t light up.
Operator Selector Switch is not
functioning properly
1. Faulty remote kit.
2. Faulty output control potentiometer.
3. Faulty output control wiring.
4. Faulty Weld Control PCB, Engine
Control Units or Chopper PCB.
1. WELDING TERMINALS switch in
wrong position, be sure switch is in
WELDING TERMINALS ALWAYS ON
position.
2. Faulty Weld Control PCB, Engine
Control Units or Chopper PCB.
1. RCD may have tripped.
2. Open breakers may need to be reset.
3. Faulty receptacle.
4. Faulty auxiliary circuit wiring.
1. Check thermostat on each of the chop-
per module.
2. Check fan operation in power electronic
component.
1. Wire Feeder Power circuit breaker open.
Check 42V or 115V breaker and reset if
tripped.
2. Faulty control cable. Repair or replace
cable.
3. Faulty wire feeder. Replace wire feeder.
1. Make sure VRD ON/OFF toggle switch
is in the “OFF” position.
2. Poor work lead connection to work.
Make sure work clamp is tightly connect-
ed to clean base metal.
3. "Weld Terminals" switch in wrong position.
Place switch in "Weld Terminals On" posi-
tion when welding without control cable.
4. Faulty PC board or welder alternator.
1. Ensure VRD ON/OFF switch is in the
“ON” position.
2. If light is burned out, replace both VRD
lights.
3. Faulty OCV indicator PC board.
1. Microswitches on back of selector switch
are bad.
2. Broken wired connection from
microswitches to switching relays.
3. Mechanical switching relays are bad.
4. selector switch is bad.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
E-4
TROUBLESHOOTING
DUAL VANTAGE
®
700
Summary of Contents for DUAL VANTAGE 700
Page 30: ...B 11 NOTES DUAL VANTAGE 700 ...
Page 32: ...C 2 NOTES DUAL VANTAGE 700 ...
Page 38: ...D 6 NOTES DUAL VANTAGE 700 ...
Page 43: ...E 5 NOTES DUAL VANTAGE 700 ...
Page 46: ...F 3 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
Page 48: ...F 5 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
Page 49: ...F 6 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
Page 51: ...F 8 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
Page 52: ...F 9 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
Page 53: ...F 10 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
Page 54: ...F 11 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
Page 55: ...F 12 CONNECTION DIAGRAMS DUAL VANTAGE 700 2 9 03 ...
Page 56: ...F 13 CONNECTION DIAGRAMS DUAL VANTAGE 700 ...
