Quick Start 1
Keysight 34970A/34972A User’s Guide 49
If the Instrument 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 the
34970A/34972A Service Guide for instructions on returning the instrument to
Keysight for service.
1 Verify that there is AC power to the instrument.
First, verify that the power cord is firmly plugged into the power receptacle on
the rear panel of the instrument. You should also make sure that the power
source you plugged the instrument into is energized. Then, verify that the
instrument is turned on.
The On/Standby switch is located on the lower left side of the front panel.
2 Verify that there is a battery in the instrument
A battery must be present for the instrument to boot up.
3 Verify the power-line voltage setting.
The line voltage is set to the proper value for your country when the
instrument is shipped from the factory. Change the voltage setting if it is not
correct. The settings are: 100, 120, 220, or 240 VAC.
See the next page if you need to change the line voltage setting.
4 Verify that the power-line fuse is good.
The instrument is shipped from the factory with a 500 mA fuse installed. This is
the correct fuse for all line voltages.
See the next page if you need to replace the power-line fuse.
– For 127 VAC operation, use the 120 VAC setting.
– For 230 VAC operation, use the 220 VAC setting.
To replace the 500 mAT, 250 V fuse, order Keysight part number 2110-0458.
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