Jula 639-200, Operating Instructions In Original

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ENGLISH
Scan mode
In this mode, the bike computer scans all the time between the different positions. Press the MODE
button until SCAN is displayed. All the functions are activated when the bike starts to move.
Zero setting
Press the MODE button until the required mode is displayed and press the SET/RESET button to clear
the current value. Zero setting cannot be performed in scan mode. The odometer value should not be
deleted as it indicates the total distance travelled.
TROUBLESHOOTING
PROBLEM CAUSE ACTION
Nothing displays on the
LCD display. Battery dead or incorrectly inserted.
Insert the battery with the correct
polarity, or replace the battery.
The current speed is not
displayed.

Incorrect wheel circumference
set.

Too far between the bike
computer and sensor.

The bike computer is fitted at an
incorrect angle.

The distance between the
magnet and sensor too far.

Dead battery in the sensor or
bike computer.

Set the correct wheel
circumference as directed.

Reduce the distance between
the bike computer and sensor.

Adjust the bike computer so
that its underside faces the
sensor.

Move the magnet and sensor.

Replace the battery.
Random output on the
LCD display. The bike computer is set to scan mode. If the bike computer is not set to
scan mode, restart it as directed.
The LCD display is dark. The unit has been exposed to direct
sunlight for some time. Remove the bike computer from the
holder and place it in a cool, dark
place until the LCD display is
restored. Replace the battery if
necessary.
IMPORTANT:
Interference and malfunctions may occur:

close to another bike with a wireless bike computer.

near a radio, TV, motor or radar.
Do not use the bike computer close to water.
Subject to printing errors and design changes over which we have no control. In the event of problems,
please contact our service department.
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