Bang & Olufsen DVD 2, Service Manual

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2.2 Service Mode
The Nucleus numbers are individual 2 digit numbers according to specific tests, and
are listed in a ‘
detailed description of available nuclei
’ which is an appendix to
the service manual.
In this description, there will be technical expressions like e.g. CHR and DVIO, which
are abbreviations for ‘Codec Host Repository’ and ‘Digital Video Input Output’ .
For an easy overview these are listed in the glossary below:
Glossary
AC3 : Audio Compression format 3
ACK : Acknowledge
ADC : Analogue to Digital Conversion
AMIX : Audio Matrix (Audio switching)
ANAB : Analogue Board
AROM : Analogue Board EEPROM
ASP : Analogue Slave Processor
ATA : AT Attachment
ATAPI : AT Attachment Packet Interface
BE : Basic Engine
BROM : BOOT EEPROM
CHR : Codec Host Repository
CRC : Cyclic Redundancy Check
DAC : Digital to Analogue Conversion
DB : Digital Board
DCB : Display and Control Board
DENC : Digital (video) ENCoder
DMA : Direct Memory Access
DS : Diagnostic and Service Software
DSP : Digital Signal Processor
DTTM : Digital Terrestrial Tuner Module
DV : Digital Video
DVIO : Digital Video Input Output
EPGB : Electronic Program Guide Board
FRE : Front End (Tuner)
HDD : Hard Disk Drive
HDMI : High Definition Multimedia Interface
IC : Integrated Circuit
IDE : Integrated Drive Electronics
IH : Interface Handler
IIC : Inter IC Communication
INT : Interrupt
LED : Light Emitting Diode
NVRAM : Non Volatile Random Access Memory
OPC : Optimal Power Control
PIO : Peripheral IO pin
PSCAN : Progressive Scan
RC : Remote Control
S2B : Serial to Basic Engine
SYS : System
TOC : Table Of Contents
UART : Universal Asynchronous Receiver Transmitter
UDF : Universal Disc Format
VIP : Video Input Processor
VMIX : Video Matrix (Video switching)