Philips 28PW9528, Service Manual

Page: 117 / 134

Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 117 EM5.1E 9.
DFU Direction For Use: description for the
end user
DNR Digital Noise Reduction: noise
reduction feature of the box
DPL Dolby ProLogic
DSP Digital Signal Processing
DST Dealer Service Tool: special remote
control designed for dealers to enter
e.g. service mode
DVD Digital Versatile Disc
DYN-FASE-COR Dynamic phase correction, to correct
the phase of the H-drive
Eagle Feature box IC performing peaking,
zooming and sub pixel LTI in both
horizontal and vertical direction, CTI
and other colour features
EHT Extra High Tension
EHT-INFO Extra High Tension information, used
for contrast reduction, vertical and
horizontal amplitude correction, beam
current protection, and flash detection.
EPG Electronic Program Guide: system
used by broadcasters to transmit TV
guide information (= NexTView)
EW East West, related to horizontal
deflection of the set
EW-DRIVE The drive signal for the EW-transistor
EXT External (source), entering the set via
SCART or via cinches
FALCONIC Feature box IC performing Digital
Natural Motion, 3DNR, and vertical
zoom and vertical peaking
FBL Fast Blanking: DC signal
accompanying RGB signals
FBL-PIP The fast blanking signal for PIP
FBL-TXT The fast blanking signal for TXT. It has
a higher priority than FBL-PIP
FBSCO Fixed Beam Current Switch Off, a 140
V dip detection to activate the black
switch off circuit
FBX Feature Box: part of small signal /
separate module which contains 100
Hz processing, extra featuring and
AutoTV algorithms (FBX6= based on
PICNIC, FBX7= based on PICNIC and
Eagle)
FDS Full Dual Screen
FILAMENT Filament of CRT
FLASH Flash memory
FM Field Memory or Frequency
Modulation
G-TXT Green teletext
GND-DRIVE A separate ground for the line drive
towards the line driver
HA50 Horizontal Acquisition 1fH: horizontal
sync pulse coming out of the HIP
HD100 Horizontal Drive 2fH: horizontal sync
pulse coming out of the feature-box
HD at HOME A signal from the OTC, to switch the
HOP to the Pixel Plus standard (75 Hz
frame)
HFB Horizontal Flyback Pulse: horizontal
sync pulse from large signal deflection
HIP High-end video Input Processor:
video and chroma decoder of EM5E
HOP High-end video Output Processor:
video, sync, and geometry controller of
HP Headphone
Interlaced Scan mode where two fields are used
to form one frame. Each field contains
half the number of the total amount of
lines. The fields are written in 'pairs',
causing line flicker
Last Status The settings last chosen by the
customer, read, and stored in RAM or
in the NVM. They are called at start-up
of the set to configure it according the
customers wishes
LDP Line Deflection Protection signal,
derived from the EW-current and
voltage
LED Light Emitting Diode
LINE DRIVE Line drive signal (for the Line
transistor)
LNA Low Noise Adapter
LSP Large signal panel
MSP Multi-standard Sound Processor: ITT
sound decoder of EM5E
MUTE Mute-Line
NC Not Connected
NVM Non Volatile Memory: IC containing
TV related data e.g. alignments
O/C Open Circuit
ON/OFF LED On/Off control signal for the LED
OSD On Screen Display
OTC On screen display Teletext and
Control; also named Artistic
P50 Project 50 communication: protocol
between TV and peripherals
PCB Printed Circuit Board
PICNIC Peripheral Integrated Combined
Network IC: main IC for 100 Hz
featuring and feature processing
PIP Picture In Picture
Progressive Scan Scan mode where all scan lines are
displayed in one frame at the same
time, creating a double vertical
resolution.
PTP Picture Tube Panel
RAM Random Access Memory
R-TXT Red teletext
RC Remote Control
RC5 / RC6 Signal protocol from the remote
control receiver
RESET Reset signal
RGB-PIP RGB-input for PIP
RGB-TXT RGB-input for Teletext and OSD
RGB-VC RGB-input to the Picture Tube Panel
ROM Read Only Memory
SAM Service Alignment Mode
SC Sandcastle: two-level pulse derived
from sync signals
S/C Short Circuit
SCAVEM Scan Velocity Modulation
SCL-F Clock signal on fast I2C bus
SD Standard Definition
SDA-F Data signal on fast I2C bus
SIF Sound Intermediate Frequency
SIMM 80-fold connector between LSP and
SSB
SNERT Synchronous No parity Eight bit
Reception and Transmit
SSB Small Signal Board
STBY Standby
SW Subwoofer
TXT Teletext
TXT-DS Teletext Dual Screen
TXT-KILL To kill the TXT picture to insert a PIP.
It has a higher priority than FBL-TXT.
uP Microprocessor
U100 U from Feature Box
V100 V from Feature Box
VA50 Vertical Acquisition 1Fh
VBAT Main supply for deflection (mostly 141
V)
VD100 Vertical Drive 2fh: vertical sync pulse
from deflection
VDPOS One of the symmetrical drive signals
for the DC frame output stage.