Lincoln Electric DC-650 PRO IM463-A - Manual (Page 22)

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TROUBLE
I. Output control not functioning
on the machine.
J. Output control not functioning
on remote control.
K. Digital meters do not light
- or -
Digital meter display is
incorrect.
L. Poor arc striking with
semiautomatic wire feeders.
CAUSE
1. Output control switch in wrong
position.
2. Faulty output control switch.
3. Faulty output control
potentiometer.
4. Leads or connections open in
control circuit.
5. LN-9/NA-5 switch in wrong
position.
6. Faulty Control P.C. Board.
1. Output control switch in wrong
position.
2. Faulty output control switch.
3. Faulty remote control
potentiometer.
4. Leads or connections open in
control circuit.
5. Faulty Control P.C. Board.
1. Faulty Meter P.C. Board.
2. Faulty Control P.C. Board.
3. Secondary thermostat is open.
1. Poor work connection.
2. Improper procedures.
3. Defective P.C. Board.
WHAT TO DO
1. Place switch in “ Local ” position.
2. Check & replace if found faulty.
3. Check & replace if found faulty.
4. Check lead continuity and
connections for an open and
repair if necessary.
5. Set to “ Off ” when not using an
LN-9/NA-5.
6. Replace. See P.C. Board
Troubleshooting Procedure.
1. Place switch in “ Output Control
Remote ” .
2. Check & replace if found faulty.
3. Check & replace if found faulty.
4. Check all leads and
connections, internal or remote,
for continuity; repair if
necessary.
5. Replace. See P.C. Board
Troubleshooting Procedure.
1. Replace. See P.C. Board
Troubleshooting Procedure.
2. Replace. See P.C. Board
Troubleshooting Procedure.
3. See “ Thermostatic Protection ”
section.
1. Work connection must be
adequate for application.
2. Adjust procedures for improved
starting.
3. Replace. See P.C. Board
Troubleshooting Procedure.
TROUBLESHOOTING