Pcb Layout - ESAB EMP 215IC Service Manual

REMOTE CONTROL START (TRIGGER) Test
LED D88 (TRIGGER ON), located on CONTROL PCB3, is normally OFF. PCB3 applies either a 12VAC (230VAC
line voltage) or 6vac (115vac line voltage) to CN5 Pins 3 &4 which connects to the front panel Remote Control
Connector J1, Pins 2&3. When a Remote Device is connected to J1 and a switch (trigger) closure is applied
between Pins 2 & 3, the voltage at PCB3 CN5 Pins 3 & 4 will drop to 0VAC and LED D88 will turn ON and weld
output will be enabled.
For any problem encountered with remote device, examine the J1 connector to make sure that none of the
sockets are damaged or retracted into the connector body preventing a good electrical connection
a) If LED D88 does turn on and no arc will ignite in GTAW process when the torch electrode is touched
to the work piece then lifted off, or if there is no output voltage at weld terminals in MIG process, replace
the Control PCB3.
b) If LED D88 does not turn ON when the Remote trigger signal is active, disconnect the Remote Control
Device from J1. Install a jumper into J1 connector between pins 2 & 3. If LED D88 turns on, then remote
device is defective.
c) If LED D88 does not turn ON when a jumper is installed into J1 connector between pins 2 & 3, con-
nect a jumper at CN5 connector between pins 3 & 4. If LED D88 turns on then replace the Remote Control
Connector J1 with harness.
6.07

PCB Layout

Display PCB
Display PCB Test Point Layout
Manual 0463 413 001 TROUBLESHOOTING
ESAB EMS215IC/EMP215IC
6-29