Philips LC4.2HE, Service Manual

Page: 68 / 78

Circuit Descriptions, List of Abbreviations, and IC Data Sheets EN 68 LC4.2HE AA 9.
9.10 LCD Display
9.10.1 Specifications
Panel model : LC230W01-A2K8
(23”)
: LC260W01-A5K6
(26”)
Resolution (HxV) : 1280x768 pixels (23”)
: 1280x768 pixels (26”)
Luminance : 450 nit (23”)
: 450 nit (26”)
Supplier : LG.Philips LCD
9.11 Abbreviation list
0/6/12 SCART switch control signal on A/V
board. 0 = loop through (AUX to TV), 6
= play 16:9 format, 12 = play 4:3
format
1080i 1080 visible lines, interlaced
1080p 1080 visible lines, progressive scan
2CS 2 Carrier Stereo
480i 480 visible lines, interlaced
480p 480 visible lines, progressive scan
ACI Automatic Channel Installation:
algorithm that installs TV channels
directly from a 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
AGC Automatic gain control (feedback)
signal to the tuner. This circuit ensures
a constant output amplitude
regardless of the input amplitude
AM Amplitude Modulation; A "data
encoding to a carrier" method, such
that the carrier amplitude is
proportional to the data value
AP Asia Pacific
AR Aspect Ratio: 4 by 3 or 16 by 9
ASD Automatic Standard Detection
AV External Audio Video
B-SC1-IN Blue EXT/SCART1 in
B-SC2-IN Blue EXT/SCART2 in
B-TXT Blue TeleteXT
B/G Monochrome TV system. Sound
carrier distance is 5.5 MHz. B= VHF-
band, G= UHF-band
BOCMA Bimos One Chip Mid-end Architecture;
Video and chroma decoder
C-FRONT Chrominance front input
CBA Circuit Board Assembly (also called
PCB or PWB)
CL Constant Level: audio output to
connect with an external amplifier
CLUT Colour Look-Up Table
ComPair Computer aided rePair. A tool for
diagnosing a TV through a PC
controlled interface
CSM Customer Service Mode
CVBS Composite Video and Blanking Signal;
A single video signal that contains
luminance, colour, and timing
information
CVBS-EXT CVBS signal from external source
(VCR, VCD, etc.)
CVBS-INT CVBS signal from internal Tuner
CVBS-MON CVBS monitor signal
CVBS-TER-OUT CVBS TERrestrial OUTput signal
DAC Digital to Analogue Converter
DBE Dynamic Bass Enhancement: extra
low frequency amplification
DFU Directions For Use: Owner's manual
DNR Dynamic Noise Reduction
DRAM Dynamic RAM; dynamically refreshed
RAM
DSP Digital Signal Processing
DST Dealer Service Tool; Special remote
control designed for dealers to enter
e.g. service mode (a DST-emulator is
available in ComPair)
DTS Digital Theatre System; A multi-
channel surround sound format,
similar to Dolby Digital
DVD Digital Versatile Disc