Specifications

Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 77L04.6HU CA 9.
B (Hercules Port)
This port is used to switch “on” the +12V of the ATSC panel. It
is logic “High” (3.3V) under normal operation and in Semi
Stand-by of the TV, and “Low” (0V) during Standby.
9.4 Power Modes
Figure 9-4 Power modes transition diagram
The chassis has four power supply modes for efficient power
management and protection management. They are: “ON”,
“OFF”, “STANDBY”, and “PROTECTION”. Transitions
between any power modes are shown in figure above.
9.4.1 OFF Mode
The set is completely switched “off” from the AC Power. This is
done with the AC. For NAFTA it means disconnecting the TV
from the mains by pulling out the AC Power cable. When the
mains is connected, this mode transits to “STANDBY”. The
transition timing for a “cold” start from “OFF” state to “ON” is
such that from the instance the Hercules gets a hard reset, in
12 s or less, the audio and video must be present.
9.4.2 ON Mode
This is the normal operating mode. All the power supply lines
in the chassis are available. All the circuits in the set are active.
From this mode, it is possible to transit to “STANDBY,
“PROTECTION”, or “OFF” mode.
9.4.3 STANDBY Mode
The total power consumption of the TV set in this mode shall
be equal or less than 1 W (“GREEN” requirement).The Standby
State will be indicated by the LED (LED “off”). In this state, only
the Hercules uP and NVM are powered. Rest of the chassis
sub-systems are disconnected. Control ports STDBY_CON
and AUX_ON are defined to control this status. In this mode,
the Hercules and peripherals are set to the lowest power
consumption mode (SLEEP MODE) by software. From this
mode it shall be possible to transit to “ON” or “OFF” mode.
9.4.4 PROTECTION Mode
The power profile for the PROTECTION mode is as low as
required to allow “soft” diagnostics, error detection, and to
indicate LED flashes to flag the type of fault. The horizontal
deflection is “off” in this mode. From the protection mode the
only possible transition is to “OFF” mode and “ON” mode.
Special cases to disable
9.5 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 region
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
CCC Continuous Cathode Calibration
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
F_15760_042.eps
161105
“ON”
“STANDBY”
“OFF”
Pull out AC
mains cable
Plug out AC Power cable
Plug in/out AC Power cable
Keypad,
Remote Controller,
Tim
e
r
,
I2C.
Protection circuit
“PROTECTION”