
E
In Case of Trouble
Introduction
The Agilent E4370A MCCD has a
CAUTION: Make sure that no cells are connected when running a
Fault LEDs (see Figure
If any of the Fault LEDs on the front of an Agilent E4370A/E4374A MCCD System are on, it indicates that there is a fault associated either with the mainframe or a charge/discharger card. Before replacing the card or mainframe, follow the procedures outlined in the following table.
Table E-1. Fault Indicators
Agilent E4370A FAULT
External
Indicates an external fault such as
External digital fault signal,
External power fail shutdown signal,
High power bus voltage after power on,
Low power bus voltage after
Overtemperature.
To clear the light, first remove the condition that caused the fault. Then either cycle power to the unit, send a Protect Clear API programming command, or press Protect Clear on the Agilent MCCD User Interface to clear the fault register.
Internal
Indicates an internal hardware fault such as
Selftest failure.
Calibration error.
Hardware error.
If the Internal LED is lit without any fault LEDs on the Agilent E4374A Charger/Discharger cards being lit, it indicates that the Agilent E4370A MCCD mainframe is defective. Return the unit for service.
If a fault LED is lit on a charger/discharger card, turn the mainframe off and replace the defective card by loosening its thumbscrews and pulling the card out of its slot.
If you replace a defective card and the Internal LED is still lit on the mainframe, the mainframe is probably defective. Return the unit for service.