HPLC Troubleshooting Quick Reference

This section is designed to assist in troubleshooting system problems. It is not a systematic approach as described in Chapter 10, which always yields better results. Keeping this in mind, I have listed a series of commonly seen problems, possible causes, and suggested treatments. 

Problem li No power. (Display does not light up on module or system.) 

Treatment Check the plug at the socket and at the module. It may have worked loose or been unplugged accidentally. 

Cause b No fuse, blown fuse, or incorrect fuse. 

Treatment On a new system, make sure fuse(s) were installed. If variable voltage, make sure the selection card is correctly positioned. New systems are often shipped with fuses in a bag. If fuse is broken, replace it and contact service. 

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