Problem Solving
Check each item.
Problem
Solution
Basic actions
The screen is not displayed.
You cannot start using the device immediately
after purchase until the device is charged. Charge
the device first. Also, nothing is displayed if the
battery runs out. Make sure you charge the battery
before use.
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The device does not react
even after performing an
operation.
Is the battery running low? Charge the battery.
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“About the battery” on page 28
If the device does not operate after charging, try
resetting the system.
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“Resetting the System” on page 138
The screen turns off or turns
blue during use
Perform a system reset.
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“Resetting the System” on page 138
The clock turns off.
When you leave the device 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
device. If the display is not restored, the battery is
running low. Charge the device.
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Also, if
Auto Sleep
is set to off, the clock does not
turn off.
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The time is not set correctly.
Set "Time Adjust" from Sys. Settings.
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If the hour is different, check the time zone and
daylight-saving time.
U
Measurement stops while
exercising.
When exercising slowly, such as when walking, we
recommend turning off the AT Pause function.
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“Automatically Start/Stop Measuring (AT
SF-710/510/310 User Manual
Troubleshooting
135