Lincoln Electric IM559 Synergic 7F and 7FH - Manual (Page 37)

E-8 TROUBLESHOOTING E-8
SYNERGIC 7F & FH
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 AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
17. Dual procedure is not functioning
when using the local dual proce-
dure switch.
18. Optional gun dual procedure
switch is not functioning properly.
a. Optional gun dual procedure
switch or remote control kit may
be connected.
b. Serial communication problem.
c. Faulty local dual procedure switch,
wiring harness, or Control board.
a. Local dual procedure switch is not in "Gun"
position, and/or remote control kit's dual
procedure switch is not in "Gun" position.
b. Faulty remote control kit.
c. Serial communication problem.
d. Faulty optional gun dual proce-
dure switch.
e. Faulty wiring harness or optional
gun dual procedure amphenol.
f. Faulty local dual procedure switch.
g. Faulty Control board.
a. When the dual procedure switch is in the “ Gun ”
position then either the remote or the optional gun
dual procedure switch must be used to select
between procedures
“ A ” and “ B ” .
b. Make sure that parameters on power source dis-
play, such as WFS, match those on wire feeder
display. If not, refer to Problem 14.
c. Disconnect harness plug from J1 on Control
board. Check continuity between plug pins 5 and
10 when local dual procedure switch is in position
"A", but not when in "Gun" or "B". Now check con-
tinuity between plug pins 3 and 10 when local dual
procedure switch is in position "B", but not when in
"Gun" or "A". If any of these continuity tests fail,
repair or replace switch or switch harness to cor-
rect problem. Otherwise, replace Control board.
(See procedure for replacing PC boards.)
a. Place local dual procedure switch in "Gun" posi-
tion and, if a remote control kit is attached, place
its dual procedure switch in "Gun" position also.
b. If a remote control kit is attached, remove it. If
this solves the problem, refer to Problem 19.
c. Make sure parameters on power source display,
such as WFS, match those on wire feeder display.
If not, refer to Problem 14.
d. Remove switch. Make sure there is continuity
between switch pins with switched closed, and no
continuity with switch open. If either of these tests
failed, repair or replace switch.
e. Disconnect harness plug from J4 on Control
board. Check that there is no continuity between
plug pins 3 and 6 when optional gun dual proce-
dure switch is open, and that there is continuity
between these pins when switch is closed. If
these continuity tests are OK then proceed to next
step. Otherwise check continuity of E to E and M
to M connections in 14-pin cable between Control
Box and Wire Drive Unit. If either continuity test
fails, replace cable. Otherwise check associated
wiring harnesses in Control Box and Wire Drive
Unit. Repair or replace faulty harness.
f. Perform step c. of Problem 17.
g. Replace Control PC board. (See procedure for
replacing PC boards.)