Specifications

Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 61L03.1U AA 9.
PW_ADJ
This signal is generated by the UOC through a PWM port. This
PWM port is configured in Push Pull mode to generate a square
wave signal of 0 to 100% duty cycle with a default value of 50%
duty cycle.
PW_ADJ will eliminate tolerance and can adjust the picture
wide slightly.
9.8.5 Protection Events
Several protection events are controlled by the UOC. In case
one of these protections is activated, the set will go to
"Standby" mode.
Deflection protections
The main protections for deflection are X-ray protection, frame
amplifier failure detection, black current loop stability
protection, and +8V auxiliary supply protection. For X-ray
protection, the X-ray detection bit, XDT, must always be set to
"1" (detection mode). High EHT protection must be triggered
via software upon detection of the XPR bit switching to "1".
A suitable number of checks are done before putting the set
into protection mode in order to prevent false triggering.
For service requirements, the Enable Vertical Guard (RGB
blanking), EVG, can be disabled (set to "0") although this is not
necessary.
The following bits are monitored:
• SUP (Supply voltage indication)
• XPR (X-ray protection)
• EVG (Enable Vertical Guard)
• NDF (Output Vertical Guard)
• BCF (Black Current Failure)
I2C protection
To check whether all I2C IC's are functioning.
9.9 Abbreviation List
2CS 2 Carrier (or Channel) Stereo
ACI Automatic Channel Installation:
algorithm that installs TV sets directly
from cable network by means of a
predefined TXT page
ADC Analogue to Digital Converter
AFC Automatic Frequency Control: control
signal used to tune to the correct
frequency
AFT Automatic Fine Tuning
AGC Automatic Gain Control: algorithm that
controls the video input of the feature
box
AM Amplitude Modulation
AP Asia Pacific
AR Aspect Ratio: 4 by 3 or 16 by 9
ATS Automatic Tuning System
AV External Audio Video
AVL Automatic Volume Leveler
BCL Beam Current Limitation
B/G Monochrome TV system. Sound
carrier distance is 5.5 MHz
BTSC Broadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
CC Closed Caption
ComPair Computer aided rePair
CRT Cathode Ray Tube or picture tube
CSM Customer Service Mode
CTI Color Transient Improvement:
manipulates steepness of chroma
transients
CVBS Composite Video Blanking and
Synchronization
CVI Component Video Input
DAC Digital to Analogue Converter
DBX Dynamic Bass Expander or noise
reduction system in BTSC
D/K Monochrome TV system. Sound
carrier distance is 6.5 MHz
DFU Direction For Use: description for the
end user
DNR Dynamic Noise Reduction
DSP Digital Signal Processing
DST Dealer Service Tool: special remote
control designed for dealers to enter
e.g. service mode
DVD Digital Versatile Disc
EEPROM Electrically Erasable and
Programmable Read Only Memory
EHT Extra High Tension
EHT-INFO Extra High Tension information
EPG Electronic Programming Guide
EU Europe
EW East West, related to horizontal
deflection of the set
EXT External (source), entering the set via
SCART or Cinch
FBL Fast Blanking: DC signal
accompanying RGB signals
FILAMENT Filament of CRT
FM Field Memory or Frequency
Modulation
H Horizontal sync signal
HP Headphone
I Monochrome TV system. Sound
carrier distance is 6.0 MHz
I2C Integrated IC bus
IF Intermediate Frequency
IIC Integrated IC bus