Brand: Panasonic
Category: Tablet Computer
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for CF-20
Uploaded: Nov. 21, 2025, 9:24 p.m.
Warranty Information
Limited hardware warranty for 3 years, battery for 1 year, software for 60 days, and options vary.
Turning On / Turning Off
Turning On
Press and hold the power switch until the power indicator lights.
Turning Off
Windows 10: Click Start, then Power, then Shutdown.
Windows 7: Click Start, then Shutdown.
Precautions against Starting Up/Shutting Down
Avoid connecting/disconnecting the AC adaptor, pressing the power switch repeatedly, or touching the keyboard, touchpad, or touchscreen during startup/shutdown.
Handling and Maintenance
Operation environment
Place the computer on a flat, stable surface. Avoid extreme temperatures, humidity, and dusty environments. Keep away from heat-sensitive items.
Handling cautions
Handle the computer with care to minimize shock. Turn off the computer when carrying it. Do not drop or hit the computer. Use the included pen only for screen interaction. Avoid getting dust or dirt on the screen.
Troubleshooting and error codes
| Problem | Solution |
|---|---|
| Cannot start up. The power indicator or battery indicator is not lit. | Connect the AC adaptor. Insert a fully charged battery. Remove and reconnect the battery pack and AC adaptor. Check AC adaptor protection function. Set Tablet USB Port or Legacy USB Support to Disable. Press Fn + F8 to turn off concealed mode. Check UEFI Boot setting. |
| The power is turned on but "Warming up the system" appears. | Wait up to 30 minutes for startup. If it fails, turn off, leave in a 5 °C or higher environment for an hour, then turn on again. |
| Cannot turn on the computer. The computer does not resume from sleep. (The power indicator blinks rapidly in green.) | Leave it in an environment of 5 °C {41 °F} or higher temperature for about an hour, then turn on the power again. |
| The computer does not enter sleep mode while the screen saver is running. (The screen stays black.) | Press and hold the power switch for 4 seconds or longer to shut down. Disable the screen saver. |
| It takes time for the power indicator to light up. | This is normal when the battery pack is mounted and the AC adaptor is not connected, as the computer checks battery charge. |
| You have forgotten the password. | Supervisor Password or User Password: Contact Panasonic Technical Support. Administrator password: Use a password reset disk or reinstall Windows. |