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Operation Qualification

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Thermo NanoDrop 2000c spectrophotometer repaired after Xenon lamp failure and wavelength verification error
21May 2026
Equipment Repair, Operation Qualification Sergey Vorochaev

Thermo NanoDrop 2000c Xenon Lamp Replacement and Wavelength Calibration

A Thermo NanoDrop 2000c spectrophotometer at UC San Diego was experiencing a start-up failure and wavelength verification error. During diagnostics, the optical switch was unable to complete wavelength verification because the Xenon light source was not illuminating during startup. Inspection confirmed that the Xenon lamp had failed electrically. Power and signal lines to the lamp were checked, and no arc discharge or lamp output was observed, while the optical switch itself was found to be func...
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Agilent G2565CA microarray scanner for DNA gene expression analysis
11Apr 2026
Equipment Repair, Operation Qualification, Preventive Maintenance Sergey Vorochaev

Agilent Microarray Scanner Autofocus Error Repair

We serviced two Agilent G2565CA microarray scanners after the customer reported an Agilent microarray scanner autofocus error during slide scanning, along with intermittent color distortion, focus instability, and image discoloration on one of the units. During diagnostics, the affected scanner initially passed routine preventive maintenance checks, but the fault appeared later in operation. We first replaced the autofocus coil cable, but the issue continued after several hours of use. Further s...
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