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Caution
O After using the product, wash the contact points lightly with a damp cloth and allow the product to air dry. If
the product is placed in the cradle when it is dirty, it could corrode, malfunction, or cause a communication
failure.
O If charging or data transfer becomes unstable, clean the contact points on the product and the cradle with a
damp cotton bud and allow them to air dry.
O If product operations become unstable or if functions do not operate correctly, perform a system reset (hold
down all four buttons at the same time).
Problem solving
Problem
Basic actions
Troubleshooting
Nothing is displayed on the LCD
screen.
The product does not react to
button presses.
The LCD screen turns off or turns
blue during use
The clock turns off.
The time is not set correctly.
Measurement stops while
exercising.
Solution
The battery needs to be charged before use. Charge the
battery.
See "Charging" on page 14.
The battery needs to be charged before use. Charge the
battery.
See "About the battery" on page 20.
If the product does not operate after charging, reset the
product.
See "Resetting the product" on page 93.
Perform a system reset.
See "Resetting the product" on page 93.
When you leave the product for a while, it enters sleep
status and the time display turns off. This is not a
malfunction as the display is restored the next time a
button is pressed or you move the product. If the display
is not restored, the battery is running low. Charge the
product.
See "Charging" on page 14.
To prevent the product display from shutting off, disable
the Auto Sleep setting.
See "System settings" on page 78.
Set Time Adjust in the Sys. Settings menu.
See "Adjusting the time" on page 27.
If the time is still incorrect, check the Time Zone and DST
(daylight-saving time) settings.
See "System settings" on page 78.
If you are performing slower exercises, such as when
walking, turn off the AT Pause function.
See "Starting/stopping measuring automatically" on page
37.
90
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