The problems and remedial actions described in this section are related to the system modules (for example, the system base, pump, autosampler, and column compartment (if available)). For information on power and communication-related problems of the system controller, display and user interface, see System Controller, Display, and User Interface related Problems.

Entire system has no power (all LED bars off (dark))

Possible Cause

Remedial Action

System power button turned off

Turn on the system with the lower power button on the front left of the system base.

System controller status LED is off (dark)

Possible Cause

Remedial Action

Power button of the system controller turned off

Turn on the system controller with the upper power button on the front left of the system base.

Main power switch of the system controller turned off

Turn on the system controller with its main power switch.

Module not connected to the mains

Connect the power cord.

Error in electronic system

Contact Technical Support.

System module has no power (LED bar off (dark))

Possible Cause

Remedial Action

Module power turned off

Turn on the module with its main power switch.

Module not connected to the mains

Connect the power cord.

Fuse has blown

Replace the fuse (see Replacing the Main Power Fuses).

Error in electronic system

Contact Technical Support.

One or more modules cannot be turned off from the power button on the system base

Possible Cause

Remedial Action

System interlink cables missing or defective

Check the system interlink connections between the system base and the system modules, see Connecting System Interlink Cables.

Module cannot be operated from the chromatography data system

Possible Cause

Remedial Action

No connection between module and computer

  • Check the USB connections from the system to the computer, see Connecting USB Cables. If the module uses a USB hub on another module, make sure that the module that provides the hub is turned on.

  • Check the USB port on the computer. USB standard 2.0 is required.