A Changzhou automation technology team recently completed multiple precision repairs to resolve recurring failures of the Shimadzu molecular pump controller series (models such as 2003 and 2304). These controllers, widely used in semiconductor and electronic manufacturing, commonly exhibit symptoms such as no display on power-up, output port failure, and abnormal current noise after long-term operation in high‑vacuum environments. Direct replacement of an affected controller can exceed ¥100,000, so professional repair offers substantial cost savings and rapid return to service.

The maintenance team uses a proven three-step troubleshooting method to locate and correct faults efficiently:

1. Inspect incoming power stability and all circuit connections for loose contacts, corrosion, or connector wear that commonly cause “no display” faults.
2. Diagnose the controller’s circuit boards and modules (including sensors, inverter assemblies, and control ICs) using specialized diagnostic instruments such as high-precision multimeters, oscilloscopes, and component testers to identify intermittent or failed parts.
3. Replace aged or damaged components with original factory parts where possible, followed by calibration and verification to return operating parameters to factory specifications.

In one case at a chip manufacturing facility, a Shimadzu 2003 controller stopped working due to circuit aging. The team performed on-site inspection and maintenance within 24 hours, restored the controller to factory operating parameters, and issued a 6-month warranty service. This rapid turnaround prevented extended production downtime and avoided the higher cost and logistics of full unit replacement.

Current service offerings include emergency on-site repair, OEM parts replacement, performance calibration, and scheduled preventive inspections that cover the entire Shimadzu molecular pump controller range. Regular inspection and timely controller maintenance are critical to preventing cascading failures that could compromise the whole vacuum system.

If you suspect any issue with your molecular pump controller—no display, output failures, unusual sounds, or unstable performance—our team can provide a no‑obligation assessment. For a free on-site inspection plan and fast technical support contact us today. Early diagnosis can save equipment, production time, and significant expense compared to full unit replacement.

Note: All repairs follow ESD protection and factory-recommended test procedures. Where replacement parts are required, original manufacturer parts are used whenever available to ensure long-term reliability.