Circuit Descriptions - Philips 26HFL3350D/10 Service Manual

7. Circuit Descriptions

Index of this chapter:
7.1 Introduction
7.2 Main Power Supply
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 and circuit
diagrams (see chapter 9. Block Diagrams and 10. Circuit
Diagrams and PWB Layouts). Where necessary, a
separate drawing for clarification will be given.
7.1 Introduction
The Q522.2HE LA is the Hospitality version of the Q522.2E LA
chassis. Refer to the Service Manual of the Q522.2E LA
chassis for a description of most circuits.
TV522/22E - Architecture Block Diagram
HDMI Side
HDMI 1
HDMI 2
HDMI 3
Hybrid
Tuner
DDR-II
64MB
ADI8191
NXP
HDMI
PNX8541
switch
Digital Colour
MASTER
Decoder
IF
8-bit video
TDA10048 2-field HD MADI
DVB-T
MPEG2
CI
Figure 7-1 Architecture of TV522/22E platform
Circuit Descriptions
The hospitality-specific features comprise:
• Advanced Hotel mode (volume lock, front control lock out,
guest menu, welcome message, etc.)
• Integrated LCD clock display with wake-up alarm
• Time synchronisation via Teletext
• Channel protection
• Energy saving features
• Multimedia Player.
The chassis supports four basic application types:
• Stand-alone
• Interactive via SmartCard (integrated slot in the TV)
• Interactive via SmartCard (Serial Xpress or SmartPort
Xpress add-on box)
• Interactive via 3rd-party set-top box.
7.1.1 TV522 Architecture Overview
For details about the chassis block diagrams refer to chapter
Block Diagrams. An overview of the TV522 architecture can be
found in figure
LVDS
FLASH USB2.0
HP
amp
Class D
TDA8932T
Q522.2HE LA 7.
Architecture of TV522/22E platform.
Matrix
DUAL
HD@50Hz
LVDS
BU7988K
PCI/XIO
EN 41
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091204
2010-Jun-30