Lincoln Electric COMMANDER 400 SVM133-B Service Manual page 65

F-11
TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
The battery does not stay charged.
The Fine Control
Commander 400 does not work
properly.
Remote output control not function-
ing correctly.
The wire feeder does not work
when connected to the machine's
14 pin amphenol.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-
800-833-9353 (WELD).
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
FUNCTION PROBLEMS
1. Check for loose, faulty or cor-
roded battery cable connec-
tions.
2. The battery may be faulty.
Check or replace.
on the 1. Make sure the Remote/Local
switch (S1) is in the "LOCAL"
position.
1. Make sure the Remote/Local
switch (S1) is in the "REMOTE"
position.
2. The remote control unit or cable
may be faulty.
replace.
1. Check the circuit breaker CB5.
Reset if tripped.
2. The wire feeder control cable
may be faulty.
replace.
3. The wire feeder may be faulty.
Check or replace.
CAUTION
COMMANDER 400
Observe Safety Guidelines
detailed in the beginning of this manual.
RECOMMENDED
COURSE OF ACTION
1. Perform the Charging Circuit
Test.
1. Perform
Potentiometer Test.
3. The control board may be faulty.
1. Perform
Potentiometer Test.
2. Check the Remote/Local switch
(S1) and associated leads. See
Repair or the Wiring Diagram.
3. The RF Bypass PC Board (CV
models) may be faulty. See the
Wiring Diagram.
The Remote Protection PC
Board (Stick models) may be
faulty. See the Wiring Diagram.
4. Check amphenols and asso-
ciated leads.
Diagram.
1. With the engine at high idle
speed: Check for the presence
of 115VAC at leads #31 pin "J"
and #32 pin "A" at the 14 pin
Check or
amphenol.
missing or low, Check for loose
or broken connections. See the
Wiring Diagram.
CB5 for proper operation.
2. The RF bypass board (CV mod-
ules only) may be faulty. See
the Wiring Diagram.
3. Perform the Stator Voltage Test.
F-11
the Fine Control
the Fine Control
See the Wiring
If the voltage is
Also check