Circuit Descriptions - Philips 32PFL5405H/05 Service Manual

7. Circuit Descriptions

Index of this chapter:
7.1 Introduction
7.2 Power Architecture
7.3 DC/DC Converters
7.4 Front-End Analogue and DVB-T, DVB-C; ISDB-T reception
7.5 Front-End DVB-S(2) reception
7.6 HDMI
7.7 Video and Audio Processing - PNX85500
7.8 Back-End
7.9 Ambilight
7.10 TCON
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 Layouts).Where necessary,
you will find a separate drawing for clarification.
Figure 7-1 Architecture of TV550 platform - TCON integrated in display
Circuit Descriptions
7.1 Introduction
The Q552.1E LA chassis is part of the TV550 platform and
comes with the following stylings: "Rembrandt" (series
xxPFL54xx), "van Gogh" (series xxPFL56xx), and "Matisse"
(series xxPFL76xx). The TV550 platform is the successor of
the TV543 platform.
7.1.1 Implementation
Key components of this chassis are:
• PNX85500 System-On-Chip (SOC) TV Processor
• TX31XX Hybrid Tuner (DVB-T/C, analogue)
• STV6110AT DVB-S tuner
• SII9x87 HDMI Switch
• TPA312xD2PWP Class D Power Amplifier
• LAN8710 Dual Port Gigabit Ethernet media access
controller.
7.1.2 TV550 Architecture Overview
• For details about the chassis block diagrams refer to
chapter 9. Block Diagrams. An overview of the TV550
architecture can be found in
back to
div. table
Q552.1E LA 7.
Figure 7-1.
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2010-Feb-19