Lincoln Electric POWER FEED 10M SINGLE/DUAL SVM172-A Service Manual page 111

F-7
POWER FEED 10M
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The displays are blank (not lit).
The wire feeds when the gun trig-
ger is activated.
The dual procedure is not function-
al when using the remote Dual
Procedure switch. The STATUS
LEDs are steady green on the
power source, Control Box and wire
drive units.
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 at 1-888-935-3877 for electrical troubleshooting assistance before
you proceed.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
FUNCTION PROBLEMS (Continued)
1. Check for loose or faulty connec-
tions at plug on the display
board, to plug on the feedhead
control board.
1. Make certain the LED indicator
on the Dual Procedure Panel is
in the middle position.
enables the gun remote dual pro-
cedure switch.
CAUTION
POWER FEED 10M SINGLE/DUAL
RECOMMENDED
COURSE OF ACTION
1. Check for 5VDC at J37 pins 2
and 10 on the display board. If 5
VDC is present, then the display
board may be faulty.
2. If the 5VDC is low or not present,
check for loose or faulty connec-
tions in SPI circuit. See machine
schematic.
3. The feedhead control board ma
be faulty.
1. Check sheilded cable lead and
connections from J86 on PC BD
This to MSP panel. Check SPI cable
from MSP panel to Dual/memory
panel. Per machine schematic.
2. Check for 5VDC at J86 pins 2
and 10. Check for 15VDC at J86
pins 1 and 10. If voltage is not
present replace feed head or
user interface BD depending on
model. If leads and voltages are
good replace
panel.
F-7
dual/memory