SF-810
User Manual
Caution
❏ If charging or data transfer becomes unstable, clean the contact points and sensor on the device and the cradle with
a damp cotton bud.
❏ If device 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
Check each item.
Basic actions
Troubleshooting
Problem
The screen is not displayed.
The device does not react
even after performing an
operation.
The screen turns off or turns
blue during use
The clock turns off.
The time is not set correctly.
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.
"Charging" on page 23
U
Is the battery running low? Charge the battery.
"About the battery" on page 29
U
If the device does not operate after charging, try
resetting the system.
"Resetting the System" on page 121
U
Perform a system reset.
"Resetting the System" on page 121
U
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.
"Charging" on page 23
U
Also, if Auto Sleep is set to off, the clock does not
turn off.
"System Settings" on page 98
U
Set "Time Adjust" from Sys. Settings.
"System Settings" on page 98
U
If the hour is different, check the time zone and
daylight-saving time.
"System Settings" on page 98
U
118
Solution
Need help?
Do you have a question about the Runsense SF-810 and is the answer not in the manual?
Questions and answers