Logitech K750 Betriebsanleitung
TROUBLESHOOTING
Logitech Solar App isn’t detecting the K750 keyboard
When the Logitech Solar App isn't detecting the K750, it is likely that the keyboard is either out
of range or not connected properly in the first place
To resolve this issue, we recommend reconnecting the keyboard. For instructions, see
Knowledge Base article 20611.
Once the K750 is properly connected and being detected, it will display in the Solar App as
shown below.
My Wireless Solar Keyboard K750 cannot be customized using Logitech SetPoint Software
Normally, you should be able to customize your K750 settings in the Logitech SetPoint Mouse
and Keyboard Software using the My Keyboard tab. If this tab isn't displayed, you'll need to re-
install SetPoint.
SetPoint with My Keyboard
Here's how the SetPoint looks *with* the My Keyboard tab:
SetPoint without MyKeyboard
Here's how SetPoint looks *without* the My Keyboard tab:
To uninstall SetPoint:
Windows XP
Windows Vista/Windows 7
Windows XP
1. Go to Add or Remove Programs:
oStart menu view: Start > Control Panel > Add/Remove Programs
oClassic start menu view: Start > Settings >Control Panel > Add/Remove
Programs
2. Select "Logitech SetPoint" from the list of programs displayed
3. Click the Change / Remove button and follow the on-screen instructions to uninstall
SetPoint.
4. Download and install the latest version of SetPoint from the K750 Downloads Page.
NOTE: You may need to restart your system after SetPoint has been installed.
5. After your system restarts, open SetPoint to verify that the My Keyboard tabs is
available.
If the My Keyboard tabs are still missing:
1. Right-click on the SetPoint icon in the system tray (at the bottom right corner of the
screen next to your clock) and select Exit.
2. Select Exit.
3. Click on the Windows Start button .
4. Choose Run.
5. Type %windir% in the Run dialog box.
6. Double-click the System32 folder to open it.
7. Double-click the drivers folder.
8. Rename the file wdf01000.sys to wdf01000.bak.
9. Re-install SetPoint.
WARNING: Before you reboot, check to make sure the wdf01000.sys file is present in
the drivers folders. If you reboot without this file, it may prevent some of your hardware -
- including mice and keyboards -- from working properly.
10. If the wdf01000.sys file is not present, change wdf01000.bak back to wdf01000.sys
11. Reboot the computer.
12. After your system restarts, open SetPoint to verify that the My Keyboard tab is present.
Windows Vista/Windows 7
1. Go to Uninstall a program:
oStart menu view: Start > Control Panel > Uninstall a program
oClassic start menu view: Start > Settings >Control Panel > Programs and Features
> Uninstall
2. Select "Logitech SetPoint" from the list of programs displayed.
3. Click the Uninstall button highlighted above and follow the on-screen instructions to
uninstall SetPoint.
4. Download and install the latest version of SetPoint from the K750 Downloads Page.
NOTE: You may need to reboot your system after SetPoint has been installed.
5. After your system restarts, open SetPoint to verify that My Keyboard tab is available.
Contact information:
If you're still having the same issue, see Knowledge Base article 20596 for how to contact
Logitech Technical Support.
K750 keyboard battery light does not stay on
The battery indicator lights on the K750 are not intended to stay on. This is the normal behavior
of the keyboard.
When the keyboard is first turned on, one of the battery indicator lights next to the Check-Light
button (shown below) will flash:
Green light
If it the green LED flashes, this means the battery level is good.
Red light
If the red LED flashes, it means the battery level is low.
To conserve power, neither battery indicator light will remain lit after the initial signal
K750 LUX number low even in a well-lit room
When the keyboard is turned on and you press the Light-Check button in a well-lit room, here is
what should happen:
Green LED on the keyboard lights up
Solar App registers at 100 lux or higher
If you press the Light-Check button and the red LED lights up instead, or the Solar App displays
a low LUX level, this could mean that the solar cell has a problem.
Num Lock disabled after Windows 10 starts
By default, the Num Lock on your keyboard is disabled each time Windows 10 boots up after a
shutdown or restart.
To configure your operating system so that Num Lock stays on during startup, please contact
professional support for your operating system. This requires advanced changes that need to be
done under the guidance of a professional technician.
Wireless product not working properly when also using a USB 3.0 device
When using a USB 2.0 2.4GHz wireless peripheral device (such as a mouse, keyboard, or
headphones) with a PC that also has a USB 3.0 peripheral device plugged in, you may
experience erratic operation caused by interference. This is especially likely to happen when
using USB 3.0 remote hard drives or flash drives.
This interference may result in:
Delayed response to mouse or keyboard inputs
Missing keyboard characters or mouse commands
Decreased operating distance between the USB 2.0 wireless device and its receiver
There are some techniques that can help early adopters of USB 3.0 to mitigate potential problems
with their existing 2.4GHz wireless devices:
If your PC has multiple USB 2.0 connectors available, separate your USB 3.0 and USB
2.0 receivers by as much distance as possible. For example, if your PC has a choice of
USB 2.0 connectors, use the one on the opposite side of the PC from the USB 3.0
connector.
Position your USB 2.0 receiver as close as possible to your wireless peripheral (mouse,
keyboard, headphones, etc.).
Use a standard, USB-extender cable to position your USB 2.0 wireless receiver as far
away as possible from your USB 3.0 connector.
A USB-extender cable is available for Logitech customers who are experiencing this problem
(click here for more information).
NOTE: A USB 3.0 connector sometimes referred to as Super Speed USB or SS, normally has a
blue plastic insert in the connector. Unlike a USB 2.0 connector which has 4 pins within the
connector, a USB 3.0 connector has 9 pins.
Move your USB 2.0 wireless receiver to the opposite side of your computer:
Make sure your USB 2.0 wireless receiver is in the USB 2.0 connector closest to your wireless
peripheral:
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