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F-8
TROUBLESHOOTING AND REPAIR
F-8
DH-10
Observe all Safety Guidelines detailed throughout this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
The “Cold Feed Forward” and/or
the “Cold Feed Reverse” buttons
do not function properly. Both
motors operate properly in other
modes.
The “Gas Purge” button does not
activate the gas solenoid. The gas
solenoid operates properly in other
modes.
The “Feeder” button does not func-
tion. The feeder head can be
selected by pulling the appropriate
gun trigger.
The “Procedure” button does not
function properly.
1. Check the connectors and wires
between the display board and
the control board for loose or
faulty connections. (J11 and J3)
2. Check the connector J10
between the keypad and the
display board for loose
corrections.
1. Check the connectors and wires
between the display board and
the control board for loose or
faulty connections. (J11 and J3)
2. Check the connector J10
between the keypad and the
display board for loose
connections.
1. Check the connectors and wires
between the display board and
the control board for loose or
faulty connections. (J11 and J3)
2. Check the connector J10
between the keypad and the
display board for loose
connections.
1. Check the connectors and wires
between the display board and
the control board for loose or
faulty connections. (J11 and J3)
2. Check the connector J10
between the keypad and the
display board for loose
connections.
1. Perform the
Keypad Resis-
tance Test.
2. The display board may be
faulty.
3. The control board may be
faulty.
1. Perform the
Keypad Resis-
tance Test.
2. The display board may be
faulty.
3. The control board may be
faulty.
1. Perform the
Keypad Resis-
tance Test.
2. The display board may be
faulty.
3. The control board may be
faulty.
1. Perform the
Keypad Resis-
tance Test.
2. The display board may be
faulty.
3. The control board may be
faulty.
FUNCTION PROBLEMS (Continued)
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric
Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.
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