HO523 Theory of Operation

this section describes how specific components operate on the ho523 on board leds there are four on board leds that indicate the following true 298,299 unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type unhandled content type 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 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 ho523 has one microsd slot, which supports transfer modes up to uhs 1 ddr50 (50mb/s) there is no inherent limit on the storage capacity of microsd cards used with the player wireless module the ho523 has an internal m 2 slot for installing a compatible wireless module the m 2 wireless module connects via cable to a single external, attachable wireless antenna