Johnson 40-6557 Mode D'emploi page 23

8489H-All_Manuals 11/18/14 11:50 AM Page 23
2. When detecting a vertical laser signal, it is important
to have the vertical bubble vial centered, as the
deflection of the receive will influence its receiving
accuracy.
3. Keep the reception window facing the laser while detecting.
4. Hold the unit stable while detecting.
LED Function
Power on and press the LED key, the LCD will now be backlit.
Automatic Shut-off Function
When the unit does not receive a laser signal for 6 minutes, the
unit will power off automatically.
Low Battery Display Function
When the battery sign blinks on the LCD, the battery is
low and needs to be replaced. If the battery is very low,
the unit will power off automatically. Replace the battery.
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