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EN 74
9.
LC7.2HU LB
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Introduction
9.2 LCD 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:
•
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.xH (development name "LC07") is a new iTV chassis
for the year 2007 (LC7.1 is the analogue range, LC7.2 is the
digital range). It is the successor of the LC4.xH chassis, and
RF
SPDIF
Circuit Descriptions, Abbreviation List, and IC Data Sheets
MP4HDM
Out
Figure 9-1 Block diagram
covers a screen size of 26 to 42 inch for LCD, with a new styling
called "ME7".
The LC7.xHU chassis is derived from the LC7.1E_LA chassis:
it uses an SSB from this chassis, with a separate panel for
MPEG4 reception, and an i-Board (and in some models an
integrated card slot) for iTV functionality. The IBoard acts as TV
master and communicates with the MPEG4 module via UART.
See also table "Model range".
Table 9-1 Model range
ITV Model Type Number
32HF7965D/27
Some key components are:
•
Front-end processing is done in the MPEG4 bolt-on
module MP4HDM. This is a "black box" for Service, and
must be swapped when defective. No diagrams are given
in this manual.
•
Sound processing is performed by a multi-standard sound
processor MSP4450 (item 7411)
•
Video processing is performed by the Trident video
processor SVP CV32-LF (item 7202).
UART
(M)
(S)
RESET#
Power 12V
(12W)
YPbPr
L/R
L/R
HDMI
Styling Reference
MFD Reference Model
ME7LB
32PFL5322/10
IBoard
2
IR
I
C
SSB
H_17700_001.eps
090108
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