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6.7.5 Set up the other settingsSet up the other settings parameters as explained in section 3 “Getting started”.For more information, consult the Help file, keyword index:Other settings.6.7.6 Running the experimentSwitch on the PGZ/PST and HVB100.Press the “Cell” button on PGZ/PST and HVB100, then start the experiment fromVoltaMaster 4.6.7.7 TroubleshootingThe pilot lamp “ON” is not lit when the HVB100 is switched onCheck the power supply circuit (mains socket, mains cable, fuse and On/Offswitch). Replacement of the fuses is described below.Check that the mains voltage selection switch on the rear panel of the HVB100 isset to the position corresponding to the mains voltage: too low or too high voltagesare equally harmful. Please refer to Section 3 “Getting Started”, paragraph 3.1.1.Replacing the fuses:Switch off the HVB100 (“On/Off” switch set to “Off”) and find the fuse holder on therear panel.Note: Secondary fuses are mounted on the printed circuit. The replacement ofthese fuses must be performed by a HACH LANGE service representative (theinstrument casing must be opened).2. Remove the fuse holderHook1. Remove themains cableFuse rating T3.15A L250V3. Replace the spent fuse by a new one of the same rating4. Fit the fuse holder back in place (check that the hook is fitted correctly)Warning!Always replace the fuse with the same type and rating.VoltaLab 21/06/10/40/50/80 177Section 6, Chapter 7: HVB100 High Voltage Booster