--- title: "Switch on the LEDs" slug: "switch-on-the-leds" updated: 2024-07-03T14:20:20Z published: 2024-07-04T11:12:36Z canonical: "docs-linescan.alliedvision.com/switch-on-the-leds" stale: true --- > ## Documentation Index > Fetch the complete documentation index at: https://docs-linescan.alliedvision.com/llms.txt > Use this file to discover all available pages before exploring further. # Switch on the LEDs ## Switch on globally You can switch on your whole illumination system. 1. In the *General dropdown menu* click **Channels**. 2. Click **All channels on**. ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image(71).png) **OR** 1. Click the general toolbox icon ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image(72).png) ## Switch on individually ### Switch on all Corona II modules of a single XLC4 control unit. 1. In the specific dropdown menu click **Channels**. 2. Click **All channels on**. ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image(73).png) **OR** 1. Click the specify toolbox icon ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image(74).png) **OR** 1. Enable the *on/off checkbox*. ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image(75).png) ### Switch on single Corona II modules This function is important for manual channel configuration. - In the control panel enable the *on/off checkbox* of the desired modules. ![](https://cdn.document360.io/eca58697-9c2f-461e-9f0a-e6205b74b693/Images/Documentation/image(76).png)