Getting Started 1Keysight E364xA User’s and Service Guide 33Connecting power to the power supplyIf the power supply does not turn onUse the following steps to help solve problems you might encounter when turningon the instrument. If you need more help, refer to Chapter 8, "Service andMaintenance" for instructions on returning the instrument to Keysight for service.1 Verify that there is AC power to the power supplyFirst, verify that the power cord is firmly plugged into the power receptacle onthe rear panel of the power supply. You should also make sure that the powersource you plugged the power supply into is energized. Then, verify that thepower supply is turned on.2 Verify the power-line voltage setting.The line voltage is set to the proper value for your country when the powersupply is shipped from the factory. Change the voltage setting if it is notcorrect. The settings are 100 Vac, 115 Vac, or 230 Vac.3 Verify that the correct power-line fuse is installed.The correct fuse is installed for your country when the power supply is shippedfrom the factory. Refer to Table 1-3 to replace the fuse for your power supply.Table 1-3 E364xA power-line fuseModel Keysight part number Part descriptionE3640AE3641A2110-0918 Fuse 1.6 A 250 V for 100 Vac and 115 Vac2110-1346 Fuse 1 A T 250 V for 230 VacE3642AE3643A2110-1550 Fuse 2.5 A T 125 V for 100 Vac and 115 Vac2110-1346 Fuse 1 A T 250 V for 230 VacE3644AE3645A2110-1549 Fuse 3.15 A T 125 V for 100 Vac and 115 Vac2110-1548 Fuse 2 A T 250 V for 230 Vac
