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This page describes how specific components operate on BrightSign 4K players.
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The audio output is fed through an amplifier and sent directly to the audio output jack. It can drive a 32Ω load with a 2V RMS signal.
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There are eight on-board LEDs that indicate the following:
LED | Indication | |
Green power (Pwr) | Displays when the board is powered up and not in reset mode. | |
Green file-system activity (Bsy) | Flashes any time there is file-system activity (on any storage device) | |
Green MicroSD activity (µSD) | Displays when a MicroSD card is present. | |
Green network activity (Svr) | Displays when the player is connected to the BrightSign Network. | |
Green Ethernet activity (Eth) | Flashes when the player is connecting to the network. Displays when connected. | |
Green WiFi activity | Flashes when the player is connecting to the wireless network. Displays when connected. | |
Yellow update (Upd) | Flashes when the board is being upgraded. | |
Red status (Err) | Flashes a certain number of times to indicate which error is occurring. The flash codes are described below. | |
2 | Unspecified error | |
3 | Network recovery script is preparing to run on a device configured for network recovery. | |
4 | No upgrade file found | |
5 | Failed to load kernel module | |
6 | Board is not capable of running the current firmware version. | |
7 | A piece of on-board hardware is not working. | |
8 | Problem related to the storage device (either the USB drive or SD card) | |
9 | Problem related to the registry/NAND | |
10 | The autorun script encountered a load/run error. | |
11 | WiFi-related error (mainly, WiFi not found on USB) | |
12 | Unable to find a bootable image | |
13 | The root file system has failed verification, which is used to detect whether the file system has been tampered with. You can recover a player that is showing this error code by performing a firmware update with secure boot. | |
14 | Boot loader failure | |
Red/yellow combined* | 2 | Erase failed |
3 | Write failed | |
4 | Verify failed | |
5 | Failed to find UBI partition | |
6 | Attempt to write unsigned CFE to unit with secure boot enabled | |
7 | Failed to find UBI partition | |
8 | Failed to create/attach UBI partition | |
9 | Unexpected error | |
10 | Upgrade script exited abnormally | |
11 | Upgrade took longer than expected | |
12 | Update completed but update file could not be deleted | |
13 | Firmware update file could not be read (from firmware v5.1.40) | |
*The Update (Upd) and Error (Err) LEDs may flash in unison to indicate that a player cannot connect to the BSN servers during the setup or recovery process. The red and yellow flash codes may also describe an error during the firmware update process as described at right.
On-Board Switch
The on-board switch is connected to the GPIO12, which is pulled low when the service (SVC) button is pressed. Conversely, a pull-up on the button normally sets the GPIO12 to be pulled high.
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