Troubleshooting - Miller Electric Trailblazer Pro 350 Owner's Manual

7-10. Troubleshooting

A. Welding
Trouble
No weld output; generator power output
okay.
No weld output or generator power
output.
Erratic weld output.
High weld output.
Low weld output.
Low open-circuit voltage.
Weld output cannot be adjusted.
No power output at Remote 14 recep-
tacle RC1.
No remote fine amperage or voltage
control.
OM-4401 Page 34
Place Process/Contactor switch in a Electrode Hot position, or place switch in a Remote position and
connect remote contactor to optional Remote 14 receptacle RC1 (see Section 4-8).
Check position of polarity switch.
Reset circuit breaker(s) CB5 and CB6 (see Section 7-9). Check for faulty remote device connected to
RC1.
Check and secure connections to Remote 14 receptacle RC14 (see Section C).
Have Factory Authorized Service Agent check capacitor board PC4 and connections.
Check fuse F2, and replace if open (see Section 7-9).
Have Factory Authorized Service Agent check brushes and slip rings, field excitation circuit, field current
control board PC2, and the rotor.
Disconnect equipment from generator power receptacles during start-up.
Check fuses F1 and F2, and replace if open (see Section 7-9).
Have Factory Authorized Service Agent check brushes and slip rings, integrated rectifier SR2, field ex-
citation circuit, field current control board PC2, and the rotor.
Check control settings.
Clean and tighten connections both inside and outside unit.
Be sure connection to work piece is clean and tight.
Remove excessive coils from weld cables.
Use dry, properly stored electrodes.
Check and adjust engine speed (see Section 7-8).
Check and secure lead connections to remote A/V control.
Have Factory Authorized Service Agent check brushes, slip rings, and field current control board PC2.
Check position of Voltage/Amperage Adjust control.
Check engine speed, and adjust if necessary.
Have Factory Authorized Service Agent check field current regulator board PC2.
Check engine speed, and adjust if necessary.
Check fuse F2, and replace if open (see Section 7-9).
Have Factory Authorized Service Agent check brushes and slip rings, integrated rectifier SR2, field ex-
citation circuit, field current control board PC2, and the rotor.
Check engine speed, and adjust if necessary.
Check position of Voltage/Amperage Adjust switch (see Section 5-1).
Reset circuit breaker CB5 and/or CB6 (see Section 6-1).
Place Voltage/Amperage Adjust switch in Remote position.
Check and secure connections to Remote 14 receptacle RC1 (see Section 4-8).
Repair or replace remote control device.
Remedy