HD5 Theory of Operation

this section describes how specific components operate on the hd225 and hd1025 on board leds the four on board leds have the following indicators led indication green power ( pwr ) displays when the board is powered up and not in reset mode flashes during the firmware update process green file system activity ( bsy ) flashes any time there is file system activity (on any storage device) blue wifi ( wifi icon ) flashes when the board is being updated 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 correctly 8 problem related to the storage device (either the usb drive or microsd card) 9 problem related to the registry/nand 10 the autorun script encountered a load/run error 11 wifi related error 12 unable to find a bootable image on board switch / svc button the on board switch is connected to the gpio02, which is pulled low when the service (svc) button is pressed conversely, a pull up on the button normally sets the gpio02 to be pulled high reset switch / gpio button the on board switch is connected to the reset circuit pressing down the reset button will send an initial signal to the system software and holding the reset button low for approximately 4 seconds will cause a hard reset microsd slot the hd225 and hd1025 have one microsd slot there is a 2tb limit on the storage capacity of microsd cards used with the player wireless module the hd225 and hd1025 both have a dual antenna connection this allows users to install a compatible wireless module without disassembling the unit this connection has a bluetooth option