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Troubleshooting procedure
Malfunction
Failed current measurement
Failed to power on the instrument when power is
supplied
Failed to update firmware
No beeper tone
No keyclick tone
No display
Checking the current input fuse
1. Press [Ω2W] to access 2W resistance measurement.
2. Connect a red test lead between Ω and 3 A input terminal.
3. Observe the resistance reading on the display. Replace the fuse if the resistance reading is > 0.3 Ω.
NOTE: Refer to Current Input Fuse Replacement in EDU34450A User's Guide for details.
Self-Test Procedures
Remove all test connections to the multimeter before performing self-test.
A power-on self-test occurs automatically when you turn on the multimeter. This limited test assures you that the
multimeter is operational.
Press [Shift] > [Store/Recall] |
It takes less than 10 seconds for the self-test to complete.
You can also perform a complete self-test from the remote interface, see Programming Guide for details.
– If the self-test is successful, "Self Test Success" is displayed briefly on the front panel.
– If the self-test fails, "
View to record the error code and message, contact Keysight support if necessary.
– If the self-test is successful, this indicates a high confidence that the multimeter is operational.
10
Identification
Verify the fuse condition and replace the fuse as necessary.
– Verify the power line fuse condition and replace the power line fuse
– Ensure that correct voltage rating is selected on the instrument.
– Verify that driver is installed correctly.
– Verify that the I/O configuration and information entered in the
– Ensure that no power or I/O connection lost during update.
– Ensure instrument boot into bootloader mode when updating the
Verify that the beeper is enabled in User Settings.
Verify that the key click is enabled in User Settings.
Press any key to exit "display off" mode.
Utility
> Instr. Setup > Self Test to perform the complete self-test of the multimeter.
" is displayed on the front panel. Press [Shift] > [Store/Recall] |
as necessary.
Keysight Basic Firmware Update Utility is correct.
firmware through recovery mode.
Utility
> Help > Error
Keysight EDU34450A Service Guide
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Table of Contents
Troubleshooting
