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Fluke 434-II/435-II/437-II
Users Manual
26-4
Troubleshooting
Analyzer does not start up.
The battery may be completely empty. In this case the Analyzer will not start up.
However if it is powered by the Power Adapter it should start up immediately. Charge the
battery first: power the Analyzer with the Power Adapter without turning it on.
Note
The Analyzer can not be powered up if the battery cover is not correctly
closed.
Screen remains black.
Make shure that the Analyzer is on: at power-on you should hear a beep. If the screen
remains black, you might have a problem with the screen contrast. Proceed as follows to
change Contrast:
• Press Function key F1
• Press the SETUP key.
• Press Function key F1.
• Press the left (more light) or right (less light) arrow key for about five seconds to
return to normal display.
Operation time of fully charged battery is too short.
The battery may be in poor condition. This may improve after a full discharge and full
charge cycle as explained in section ‘Keeping the battery in good condition’ in this
Chapter. Detailed information on the battery condition can be found on the Analyzer’s
screen after the key operations: SETUP, F2 – VERSION & CAL, F2 – BATT. INFO.
Replace a battery that is in poor condition.
PowerLog Software does not recognize the Analyzer.
• Make sure that the Analyzer is turned on.
• Make shure that the USB interface cable is properly connected between Analyzer and
PC.
• Make sure that all actions described in addendum ‘Installing USB Drivers’ have been
carried out properly.
1.888.610.7664 sales@GlobalTestSupply.com
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