Introduction - VESTEL MB120 DS Service Manual

A. Main SW update ............................................................................................................................................. 57
Dısplayport fw update .................................................................................................................................... 57
B.
C. HDMI SPLITTER FW UPDATE ..................................................................................................................... 57
18. TROUBLESHOOTING ..........................................................................................................................................58
No Backlıght Problem ........................................................................................................................................58
A.
Stayıng ın Stand-by Mode ..................................................................................................................................61
B.
C. IR Problem .........................................................................................................................................................62
D. Keypad Touchpad Problems ...............................................................................................................................63
E. USB Problems....................................................................................................................................................64
F. No Sound Problem .............................................................................................................................................65
G. Standby On/Off Problem ....................................................................................................................................65
No Sıgnal Problem .............................................................................................................................................65
H.
Real tıme clock problem .....................................................................................................................................67
I.
19. GENERAL BLOCK DIAGRAM ............................................................................................................................68

1. INTRODUCTION

17MB120DS main board is driven by MStar SOC. This IC is a single chip iDTV solution that supports
channel decoding, MPEG decoding, and media-center functionality enabled by a high performance AV
CODEC and CPU. This IC also supports 4K2K (UHD).
Key features includes:
• Combo Front-End Demodulator
• A multi standart A/V format decoder
• The MACEpro video processor
• Home theatre sound processor
• Internet and Variety of Connectivity Support
• Dual-stream decoder for 3D contents
• Multi-purpose CPU for OS and multimedia
• Peripheral and power management
Supported peripherals are:
• HDCP 2.2 / HDMI1.4 (FHD) input (1 HDMI default, 1 HDMI opt. with DVI, 1 HDMI opt. with OPS)
• HDCP 2.2 / HDMI2.0 (UHD) input (1 HDMI default, 1 HDMI opt. with DVI, 1 HDMI opt. with OPS)
• 1 Displayport1.2a input / 1 DP 1.2a output
• 1 PC (VGA) input
• 1 YPbPr / Back S-Video
• Line In/ Line out
• 1 Optic S/PDIF output
• 1 USB 3.0, 1 USB 2.0 port
• 1 USB2.0 for touchscreen (optional)
• 1 OPS interface (optional)
• 1 Extender IR
2