Getting Started 1
Preparing the Power Supply
E364xA User’s and Service Guide 9
Connecting power to the power supply
If the power supply does not turn on
Use the following steps to help solve problems you might
encounter when turning on the instrument. If you need more
help, refer to
Chapter 8, “Service and Maintenance” for
instructions on returning the instrument to Keysight
for service.
1 Verify that there is AC power to the power supply.
First, verify that the power cord is firmly plugged into the
power receptacle on the rear panel of the power supply.
You should also make sure that the power source you
plugged the power supply into is energized. Then, verify
that the power 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 power supply is shipped from the
factory. Change the voltage setting if it is not correct. 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 shipped from the factory. Refer to
Table 1- 3 to replace the fuse for your power supply.
Table 1 - 3 E364xA power-line fuse
Model Keysight part number Part description
E3646A
E3647A
2110-1550 Fuse 2.5 A T 125 V for 100 Vac and 115 Vac
2110-1346 Fuse 1 A T 250 V for 230 Vac
E3648A
E3649A
2110-0996 Fuse 4 A T 250 V for 100 Vac and 115 Vac
2110-1548 Fuse 2 A T 250 V for 230 Vac
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