JDC Electronic SA Geos 11 - Manual (Page 34)

the screen displays the message , release the
buttons and press the MOD ( ) button down for 2 seconds to confirm.
The instrument displays the message informing you
that the reset operation has indeed been carried out.
Instrument reset
Remove the batteries for 20 minutes.
Power Supply, Battery Replacement
The instrument is supplied with two new batteries already in place (one
battery for power supply, and one for backup).
As for the diode lamp, it is entirely independent from the instrument, and
is therefore relying on its own batteries for supply (also pre-fitted), which
are the same as those used for the instrument.
Batteries fitted in the instrument
The instrument operates on a 3V ‘button’ type battery, with the reference
CR2032, which is placed behind the lid at the back of the instrument. A
second identical battery is located inside the compartment, thus acting as
a spare battery. Important note: the spare battery is also there to hold the
active battery in place, which means that the instrument can only work
properly when fitted with both batteries.
To replace the battery(ies) of the instrument:
1. Unscrew both screws and then remove lid.
2. Remove both batteries (the top battery is
the spare battery, while the battery located
at the bottom of the compartment supplies
the power).
3. Place the spare battery (provided it is new)
at the bottom of the compartment (+ facing
outward).
4. Put a spare battery back on to the supply
battery in order to keep the latter in place. The spare battery should
be placed “upside down” on the supply battery (+ against +).
Simply use the used battery if you do not have a new battery.
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