Cleaning The Phone - Grandstream Networks GXV3350 Administration Manual

5. Power up the GXV3350. The GBX20 will show the booting up screen with version information and
connecting status.
6. After successfully booting up, the extension board will stay in idle. Press and hold the LEFT button for
3 seconds to check the version information and status.
The GBX20 can be configured via the web GUI of the GXV3350 connected. After successfully configured,
press LEFT or RIGHT button on the GBX20 and users could browse all the Programmable Keys' status in
different pages.

Cleaning the Phone

For daily dust removal and fingerprint removal, please use the screen cleaning cloth in the factory package
to wipe the phone. Before you clean the touchscreen, we recommend turning cleaning mode on, so that
you will not activate phone functions while wiping the touchscreen.
You can go to LCD Settings  Basic  Accessibility to enable cleaning mode. Once finished, you can
enable the touchscreen again by pressing any hardkey on the phone.
For some special cases like medical environment, you can use medical alcohol or isopropanol. The steps
are as followed:
1. Before cleaning the phone, stop using it and disconnect it from the power supply.
2. Spray a small amount of disinfectant on screen, camera, handle and other places that are easily
touched by users.
3. Wipe the phone with screen cleaning cloth.
4. Power on until the disinfectant is completely volatilized.
Notes:

Keep the power plug clean and dry, or may lead to electric shock or other perils.

DO NOT use disinfectant too frequently.

DO NOT use high degree or even pure disinfectant. It could damage the phone.
GXV3350 Administration Guide
Version 1.0.3.27
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