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9. Circuit Descriptions and Abbreviation List
Index of this chapter
1. Introduction
2. Block diagram
3. Power supply
4. Control
5. Tuner & IF
6. Video: HD jack interface
7. Video: High-end Input Processor
8. Video: Feature box
9. Video: High-end Output Processor
10. Video: 3D Comb Filter
11. Synchronization
12. Horizontal deflection
13. Vertical deflection
14. Audio
15. Closed Caption
16. CRT Panel / Rotation
17. Auto-Scavem
18. Double Window (DW), PIP
19. Software related features
20. Abbreviation list
21. IC Data Sheets
9.1
Introduction
The chassis consists of a full sized LSP/SSP combination and
a smaller SSB, which is mounted on the SSP using a SIMM
connector. The main functionalities of the LSP are supply,
deflection, and sound amplification.
The main functionalities of the SSP are tuner input, SIMM
interface, I/O and interface provisions for extended functions
such as PIP.
The main functionalities of the SSB are the core TV
functionalities, being set control, video and audio decoding,
feature box, video featuring, and sync/geometry control.
The LSP (single sided) is built up very conventional, with hardly
any surface mounted components on the copper side. The LSP
has a very large 'hot' part, including both deflection coils.
The SSB is a high tech module (four layer, 2 sides reflow
technology, full SMC) with very high component density and
complete shielding for EMC-reasons. Despite this, it is
designed in such a way, that repair on component level still is
possible. To achieve this, attention was paid to:
•
The position of service test lands: most of them are at the
Tuner side.
•
Accessibility (Tuner side.) If there are still problems with
the accessibility, one can order an extension board (12 NC:
9965 000 05769.)
•
Clearance around surface mounted ICs (for replacing.)
•
Detailed diagnostics and fault finding is possible via
ComPair.
Circuit Descriptions and Abbreviation List
EM5A NTSC
9.
EN 117
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