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CSL Part Number: 104537
Product Overview: The ALC-401 is an isolation board used in Jetline Engineering's 9690 Arc Length Control system for automated welding applications. It provides electrical isolation and signal conditioning between the arc length controller CPU and output circuits that regulate welding parameters. The board features adjustable trim pots for calibration, test points for voltage monitoring, and connects to external equipment via a wiring harness. It operates on 12VDC and is designed to maintain precise arc length control during welding processes.
Category: Welders
Manufacturer: Jetline Engineering
Manufacturer Synonyms: Miller
Manufacturer Part Number: 9690-11
Common Failures
This product has experienced two notable issues: lack of voltage output and calibration deviation. In the first case, appropriate test point voltages were present, but there was no voltage on the outgoing pins. The second failure involved calibration values that deviated 15-18% beyond the acceptable +/- 10% range.
Repair Approach
For the voltage output issue, diagnostic testing revealed No Fault Detected, suggesting the issue may be related to configuration rather than component failure. In the case of the calibration issue, component replacement did not restore the unit to specification. Further evaluation would be required to determine whether the unit is serviceable.
Testing & Quality
Testing procedures included diagnostic testing, power tests, and burn-in testing without load. One unit passed testing with No Fault Detected. Another unit did not meet calibration standards after component replacement and would require additional evaluation to determine serviceability.
Repair your broken Jetline Engineering part
We can repair your Jetline Engineering model 9690-11 .
Please note: our repair turnaround time may be longer than our standard lead times for this item.
Step 1 -
Click the green button above, "Repair Now," and add to your RMA.
Step 2 -
Print the RMA form that is emailed to you, and put it in a box with the parts for repair.
Step 3 -
Mail the box to the address on the RMA.
You will be sent an authorization for repair via email. Your approval is needed before any work is started.
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