Philips 32PHA4509S/40, Service Manual

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Circuit Descriptions EN 22 TPS14.1A LA 7.
2014-Oct-24
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7. Circuit Descriptions
Index of this chapter:
7.1 Introduction
7.2 Power Supply
7.3 DC/DC Converters
7.4 Front-End Analogue ATV reception
7.5 HDMI
7.6 Video and Audio Processing - MST6931XP
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.
7.1 Introduction
The TPS14.1A LA is a new chassis launched in Asia-Pacific in
2014. The whole range is covered by MST6931. The major
deltas versus its predecessor support NTSC/PAL/SECAM,
with multi-media, Video out functionality.
The TPS14.1A LA chassis comes with the following stylings:
•
series xxPxA4509xx
• series xxPHA4309xx
7.1.1 Implementation
Key components of this chassis are:
•
SCALER MST6931XP-V5 EPLQFP-128
• TUNER China DT21CN-2-E
• TUNER China DT21WN-2-E
• AUDIO APA2176AQBITRG 0.27W TQFN3X3-16 for
Headphone Amplifier
• AUDIO APA2619RI-TRG 15W TSSOP-28P for Audio
Amplifier
7.1.2 TPS14.1A LA Architecture Overview
For details about the chassis block diagrams refer to chapter 9.
Block Diagrams
.
An overview architecture can be found in
Figure 9.1 .