VESTEL MB120 DS, Service Manual

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2
A. Main SW update ............................................................................................................................................. 57
B.
Dısplayport fw update
.................................................................................................................................... 57
C. HDMI SPLITTER FW UPDATE ..................................................................................................................... 57
18. TROUBLESHOOTING ..........................................................................................................................................58
A. No
Backlıght Problem ........................................................................................................................................58
B.
Stayıng ın Stand-by Mode ..................................................................................................................................61
C. IR Problem .........................................................................................................................................................62
D. Keypad Touchpad Problems ...............................................................................................................................63
E. USB Problems....................................................................................................................................................64
F. No Sound Problem .............................................................................................................................................65
G. Standby On/Off Problem ....................................................................................................................................65
H.
No Sıgnal Problem .............................................................................................................................................65
I. Real
tıme clock problem .....................................................................................................................................67
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