My Leica Disto A3 keeps showing the error message 290 with a spanner. i appear to have mislaid my manual could you assist please.

There is no error code 270 listed for a Leica Digital DISTO D3a 100M Laser Distance Meter.
Are you sure that's the code?
Or do you have a different make or model of laser distance meter?

Low battery. Mine does that when batteries are too low to operate the laser.

I had this exactl problem and resolved it by replacing the batteries

hi,my disto A5 IS ERORR 206.I M IRANIAN.PLEASE HELP ME.
EMAIL:[email protected]

Put in new batteries and clean lens and calibrate if it has that function. If that doesn't work, Type the " Leica Disto A6 Laser Distance Meter user manual" and it will bring up sites to manual.

if it is still under warranty then you are simple if you do not have it repaired under warranty
it could be a major fault but as soon as you carry out a fix the warranty is void regardless of the fault
while everything else appears to be working , there could be something else somewhere that is the actual cause of your problem

Mike,
Leica does not sell replacement keypads, if the unit is less than 2 years old they will cover it under warranty. Contact the dealer you bought it from and they can handle the warranty exchange. If it is over two years old, it is out of warranty, but they offer a "repair" option, which will replace your damaged A3 with a new D3 for about $215. If you bought it from a reputable dealer, you shouldn't have any problem.
Hope this helps,
Greg DeTray
www.distagage.com

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A short rectangular "dot" is normal, a 255 error indicates that you are not getting enough reflection back to the optics. This may be due to the surface you are aiming at. Try placing a piece of white paper over the surface, if it does not measure 30 or 40 meters to a sheet of white paper, indoors, and the optics are clean, I'd contact your dealer to initiate a warranty claim. 3 or 4 meters should not be a problem unless the surface is very rough, such as dirt or sand, or very dark color.
If you just bought the unit from a licensed distributor, you should have at least a two year warranty, possibly 3 years.
Greg DeTray
www.distagage.com

can not measure distance.
each time the button is pressed dist, 279 error appears.