|Arcam CD72 CD92 Service.pdf||Service Manual
DiVA CD72, CD92 Compact Disc Player
Circuit board parts list
General assembly parts list
CD72/CD92 Circuit Description
The Main PCB for the DiVA CD72/92 player may be built as two different versions: ! ! With all components fitted for the Alpha CD72 (L887RS) With audio components and connectors omitted, for use as a motherboard for plug-in DAC module L816 (L888RS) for CD92
The keyboard scanning works by connecting the keys to a resistor ladder on an ADC input to the micro. Pressing a key presents a unique voltage to this input. The remote control data contains a `Customer Code' that identifies this as an Arcam product. The diode network D291 to D297 configures the micro to accept this code.
The status of the drawer is indicated to the micro by two micro switches `INSW' and `|