Circuit Descriptions - Philips Q543.1E LA Service Manual

EN 36 7. Q543.1E LA

7. Circuit Descriptions

Index of this chapter:
7.1 Introduction
7.2 Power Supply
7.3 DC-DC Converter
7.4 Front-End
7.5 HDMI
7.6 Video and Audio Processing - PNX8543
7.7 Common Interface CI+
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 (see chapter
9. Block Diagrams) and circuit diagrams (see chapter
10. Circuit Diagrams and PWB
you will find a separate drawing for clarification.
7.1 Introduction
The Q543.1E LA chassis (platform name TV543/32) is a
derivative from the Q543.3E LA chassis.
2009-Mar-27
Circuit Descriptions
Layouts).Where necessary,
Figure 7-1 Architecture of TV543/32 platform
Main difference with the previous chassis is the absence of the
Timing Controller (TCON) on the SSB; it comes together with
the LCD Panel instead.
7.1.1 Implementation
Key components of this chassis are:
• PNX8543 Digital Colour Decoder
• HD1816AF Hybrid Tuner
• DRX3926K Demodulator
• TDA9996 HDMI Switch
• TPA3123D2PWP Class D Power Amplifier.
7.1.2 TV543 Architecture Overview
• For details about the chassis block diagrams refer to
chapter 9. Block Diagrams. An overview of the TV543
architecture can be found in
Optional for
Q548 chassis
Figure 7-1.
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