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6.12 SPDIF Switch (NLAST4599) ....................................................................................................28
1 INTRODUCTION
The purpose of this document is to define the operation of 17MB27 chassis, capable of driving 15" and
19" TFT LCD panels. It is aimed to provide information to engineering staff to understand the operation
and specs of the TV. The other related technical documents are given in Table1:
Title
1
17MB27 schematics
2
IR receiver and LED display board schematics
3
Keypad board schematics
4
DVD module card schematics
5
DVB-T module card schematics
2 GENERAL DESCRIPTION
The system is a low to mid end; 15" and 19" TFT TV solution basically for EU market with VCT4913G
microcontroller / video audio processor chip on a 2-layer PCB. Since the target market is EU, the first
release of the TV will support PAL/SECAM B/G/D/K/I/L/L'.
The target panels are 15" 1024x768 and 19"w 1440x900 TFT-LCD panels. A DVD loader is used to read
DVD content and a DVB-T module card is used to support DVB-T. 15" TV will use 12V/4.16A DC
adapter; 19" TV will use 12V/5.83A DC adapter.
Inputs
• 1xTuner (both analog and DVB-T)
• 1xDVD
• 1xScart
• 1xPC (VGA) (optional) (supports also YPbPr)
• 2xHDMI (optional)
• 1xBack AV (optional)
Outputs
• Speaker (stereo, 2x16 Ω, 2x2Watt)
• Headphone (stereo) (optional)
• Audio line out (stereo) (optional)
• DVD/DVB-T coaxial SPDIF out(optional)
General default features
• Multi System Reception: PAL-SECAM BG-DK-I/I'-L/L'
• Menu system (multi language)
• 100 program storage locations
• OSD (on-screen display)
Table1.1: Related documents
3
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