Technical data

9
9. Battery change
CM 8.2: First you should put CM 8.2 into the “Powerdown Mode” (see
chapter 5 Settings) Open battery cap with a coin (unscrew to the left).
Insert battery type CR2032 (please use battery with smooth minus-pole)
with plus-pole facing up. Close battery cap, being sure not to over tigh-
ten. After inserting the battery the display will show normal mode.
(Speed-)Transmitter: Open battery cap at the top of the transmitter
with a coin (unscrew to the left), remove old battery and insert new 12
V battery, type 23A (with pluspole facing up). Close battery cap, being
sure not to over tighten.
(Battery change in the optional cadence transmitter works in the same
way.)
Please do not throw away battery in your normal garbage.
10. Trouble shooting
Faulty or no display
- check to see if battery is installed properly or replace battery
(Attention: removing battery will clear all settings and values)
- press AC-button on the rear of the computer
Actual Speed not displayed
- transmitter hasn`t been initialized (see chapter 5)
- check to see if wheel-sensor is mounted properly
- check the position of the spoke magnet (max. 3 mm distance to
wheel-sensor)
- make sure CM 8.2 is mounted in bracket correctly
- check wheel circumference
- start transmitter search (press left button for 3 seconds)
Speed to high or to low
- check wheel circumference
- check to see if you are using miles or kilometers
Transmitters cannot be initialized
(initialization is very slow or “error” displayed)
- Tranmitter battery is discharged or transmitter is defect
- Transmitter has already been initialized for one of the bikes. If you
still want to initialize the transmitter for the current bike you must
initialize the transmitter again for the other bike, but without an active
transmitter. “Error” will be displayed. Now you can initialize it again
with the choosen bike.
Automatic search of the transmitter doesn’t start
by moving the bike.
- CM 8.2 is not correctly located in the handlebar bracked
- A transmitter has already been found (CM 8.2 displays SPD 0) e.g.
if you switch bikes. If you stay in the transmitting area of the first
transmitter CM 8.2 displays 0. If CM 8.2 is outside the transmitting
area it will display “––“. With the next movement of the bike the
transmitter search will start again.
- transmitter hasn`t been initialized (see chapter 5)
No heart rate displayed or values displayed are incorrect
or unstable
- proof whether heart rate is switched on in setting mode
- Check transmitter belt (battery)
- Skin too dry or cold
- Distance between CM 8.2 and transmitter belt is too big (max. 5m)
- start transmitter search (press left button for 3 seconds)
Cadence is not displayed or value incorrect or unstable
- Check whether switched on in setting mode
- Check sensor and magnet for correct installation
- start transmitter search (press left button for 3 seconds)
CM 8.2 is making noise
- its normal because of the automatic movement sensor
PC Recording doesn’t starts
- storage is full, you have to delete recorded tours (with HACtronic
program or the reset function in settings of CM 8.2 see chapter 5;
Attention: the other values will be deleted also)