© Keysight Technologies 2015-2019
Information Only Service Note
Version 1.2 | October 10, 2019| Page 2 of 7
Situation:
Once you find that the OLED display of your Handheld Digital Multimeter (HHDMM) is dimmer than
usual or no display, and there is a beeping sound, replacing the OLED display board will solve the
problem.
If the beeper was disabled previously, you may connect your HHDMM to a PC by using an IR-USB
cable (U1173B) to check whether the unit can be detected by the Keysight Handheld Meter Logger
software. If the PC can detect the HHDMM, replacing the OLED display board will bring back the bright
display.
Follow the instructions below to replace the OLED display board.
Solution/Action:
1.
Turn the knob of the rotary switch to OFF and disconnect test leads.
2.
Wear clean and dry gloves on your hands and avoid touching any components except the
OLED display board.
