LC7.1E - Super TV Servis M+S

Circuit Descriptions, Abbreviation List, and IC Data Sheets LC7.1E PA 9. EN 69
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 PDP Power Supply
9.3 DC/DC converters
9.4 Front-End
9.5 Video Processing
9.6 Memory addressing
9.7 Audio Processing
9.8 HDMI
9.9 Abbreviation List
9.10 IC Data Sheets
Notes:
• Only new circuits (circuits that are not published recently)
are described.
• 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 (chapter 6) and
Circuit Diagrams (chapter 7). Where necessary, you will
find a separate drawing for clarification.
9.1 Introduction
The LC7.x (development name “LC07”) is a new global chassis
for the year 2007 (LC7.1 is the analogue range, LC7.2 is the
digital range). It is the successor of the LC4.x chassis, and
covers a screen size of 26 to 47 inch for LCD and 42 to 50 inch
for Plasma sets with a new styling called “ME7”. Some key
components are:
• Audio: Sound processing is performed by a multi-standard
sound processor MSP4450 (item 7411)
• Video: Video processing is performed by the Trident video
processor SVP CV32-LF (item 7202).
For analogue reception, a standard IF demodulator is used,
whereas digital input signals (DVB-T; LC7.2x chassis) are
processed through a COFDM channel decoder together with
an MPEG decoder (integrated on the SSB). A so-called
“Reneas” microprocessor performs the control functionality.
DC-DC CONVERSION
AUDIO CLASS D
RENEAS
uP
TRIDENT
VIDEO
PROC.
ANALOG TUNER
IF DEM
VIF SAW
SIF SAW
HDMI
H_16940_010.eps
260407
Figure 9-1 SSB top view