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Brother HD-390I - User Manual

Brother HD-390I
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MODEL: HD-390I
Professional Analogue Multimeter
With robust Holster & reliable Protection
Operators Instruction Manual
READ AND UNDERSTAND THIS
MANUAL BEFORE USING THE
INSTRUMENT
Failure to understand and comply with the
WARING and operating Instructions can
result in serious or fatal injuries and /or
property damage.

Questions and Answers

  • S
    Steven GoodwinAug 11, 2025
    Why my Brother Multimeter does not work?
    • M
      Michael HarrisonAug 11, 2025
      The Brother Multimeter might not be working due to exhausted batteries or poor contact of the inner batteries. Check the status of the batteries and verify the 0.5A fuse is in good condition and properly connected.
  • N
    Nichole MillerAug 17, 2025
    What to do if no measurements possible via V/mA socket on Brother Multimeter?
    • H
      Herbert MoralesAug 17, 2025
      If you cannot get any measurements via the V/mA socket on your Brother Multimeter, the fuse may be defective. Check the 0.5A fuse and replace it if necessary.
  • M
    Michele Cruz DVMAug 23, 2025
    Why are no measurements possible via 10A socket on my Brother HD-390I?
    • M
      Maureen SmithAug 23, 2025
      If no measurements are possible through the 10A socket on your Brother Multimeter, the fuse might be defective. Check the 10A fuse and proceed with a fuse replacement if needed.
  • B
    Brett JonesAug 29, 2025
    What causes faulty measuring results on Brother HD-390I Multimeter?
    • A
      Ashley PerezAug 29, 2025
      Faulty measuring results on your Brother Multimeter could be due to a lack of null balancing of the display, an incorrect 0 Ohm calibration for resistance measurement, or improperly assembled batteries.
  • L
    Lucas GibsonSep 4, 2025
    How to fix no change in measured values on Brother HD-390I?
    • A
      amber70Sep 4, 2025
      When the measured values are not changing on the Brother Multimeter, ensure that you have selected the correct measuring sockets and that the measuring range/mode (AC/DC) is correct.

Brother HD-390I Specifications

General IconGeneral
BrandBrother
ModelHD-390I
CategoryMultimeter
LanguageEnglish