6-14 TROUBLESHOOTING Manual 0463 413 001
Initial Set up conditions
SW1- OFF
J1 – No remote device installed
Connect unit to 120VAC Mains Power.
Polarity Cable not connected.
1) Power-Up Test
a) Turn SW1 to ON position and observe the following
The unit will come up in whichever process that the unit was in when the unit was last turned o.
PCB LEDs Status
POWER PCB3
D42 & D53 ON
CONTROL PCB2
D35 PS OK ON
D36 3.3V_1 OK ON
D40 +24V_1 LOW OFF
D43 BUS V ERR OFF
D44 UI COM Flashing
D45 uP OK ON
D85 10.3_VB OK ON
D86 +5V_10 OK ON
D87 MIG SOL ON OFF
D88 TRIGGER ON OFF
D89 TIG SOL OFF
D90 FAN ON OFF
If the unit does not perform as indicated, proceed to subsection 6.05
SMAW Process Test
1) If unit is not in SMAW process, use MAIN ENCODER to select SMAW (STICK) process. Approx. 54
VDC present between +/- weld output connectors.
PCB LEDs Status
CONTROL PCB2
D33 PWM ON (Dim but ON)
2) Connect weld cables to unit.
3) Strike welding arc. D90 on PCB3 turns on and Fans run.
4) Vary Current/WFS Encoder to adjust current from min to max. D33 will increase brightness as current
is increased.
If the unit does not perform as indicated, proceed to subsection 6.05
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