Circuit Descriptions - Philips LC4.7E Service Manual

Circuit Descriptions, Abbreviation List, and IC Data Sheets
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 Block Diagram
9.3 Power Supply (SDI plasma panel)
9.4 Input/Output
9.5 Tuner and IF
9.6 Video: TV Part (diagrams A1, A2, and A3)
9.7 Video: Scaler Part (diagram A7 and A13)
9.8 Audio Processing
9.9 Control
9.10 Abbreviation List
9.11 IC Data Sheets
Note:
•
Only new (not recently published) circuits are described
here. For the other circuit descriptions, see a.o. the A02,
FTL13, and FTL2.1 Service Manuals.
•
Figures can deviate slightly from the actual situation, due
to different set executions.
•
For a good understanding of the following circuit
descriptions, please use the wiring, block and circuit
diagrams. Where necessary, you will find a separate
drawing for clarification.
9.2
Block Diagram
ANALOGUE TV
NVM
Tuner
TV/FM
3DYC
uPCxxx
(Option)
2
I C
Hercules-
HM
Compair
Link
(Service)
(RJ12)
AC Mains
Input
Power Supply Unit
TDA9178
CTI/LTI/Hist.
YUV
Interface
HERCULES
RGB
(VDP + STEREO)
& HV
Embedded
Flash
2
I S
LIP Audio
SYNC Amp
Side Const
AV1 AV2
Speakers
Audio
& HP
Out
TV/IOs
(SCART/Cinch)
Figure 9-1 Block Diagram
9.1
Introduction
The LC4.x is a global chassis for the year 2004. Its architecture
is based upon the LC03 chassis (LC4.6 is LCD, LC4.7 is PDP).
This chassis has the following (new) features:
•
Audio: The sound processor is part of the UOC processor
(called "Hercules").
•
Video: Enhanced video features, video drivers, Active
Control and multiple PIP.
The functions for video/audio processing, microprocessor (uP),
and CC/Teletext (TXT) decoder are all combined in one IC
(TDA120xx, item 7011), the so-called third generation Ultimate
One Chip (UOC-III) or "Hercules". This chip has the following
features:
•
Control, small signal, mono/stereo, and extensive Audio/
Video switching in one IC.
•
Upgrade with digital sound & video processing.
•
Alignment free IF.
•
FM sound, no traps/bandpass filters.
•
Full multi-standard colour decoder.
•
One Xtal reference for all functions (microprocessor, RCP,
TXT/CC, RDS, colour decoder, and stereo sound
processor).
DMMI
DMMI
(Multi-media
NVM
Interface)
Analogue
MUX
Input
MUX
RGBHV/
YPbPr
PC
VGA
Audio
INPUT
INPUT
Cinch-to-VGA
Adapter
(YPbPr- HD)
LC4.7E AA 9.
SCALER
FLASH SDRAM
GM1501
LVDS
(SCALER)
DVI 24-bit
Input Input
HDMI
Processor
HDMI Compair
DVI-D
INPUT (UART)
INPUT
Option: Choose one
DVI-to-HDMI
Adapter
EN 63
DISPLAY
PANEL
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