VESTEL MB120 DS User manual

MB120 DS
SERVICE MANUAL

1
Table of Contents
1. INTRODUCTION ................................................................................................................................................... 2
2. MICROCONTROLLER (MSTAR MSD95M0D)..................................................................................................... 3
3. VIDEO BACK-END PROCESSOR (MSTAR) .......................................................................................................10
MST7410FE.......................................................................................................................................................... 10
4. AUDIO AMPLIFIER STAGES ..............................................................................................................................13
A. MAIN AMPLIFIER (U8) (10W/12W options) ...................................................................................................13
B. HEADPHONE AMPLIFIER (U59)....................................................................................................................15
C. SUBWOOFER PREAMPLIFIER (U30).............................................................................................................16
5. POWER STAGE.....................................................................................................................................................17
A. TPS54528..........................................................................................................................................................18
B. TPS54628..........................................................................................................................................................20
C. TPS54821..........................................................................................................................................................22
D. TPS563200 ........................................................................................................................................................24
E. FDS4685............................................................................................................................................................26
F. NTGS3446.........................................................................................................................................................27
G. APL5910............................................................................................................................................................28
H. APL2111H.........................................................................................................................................................30
6. 2Gb DDR3 SDRAM ...............................................................................................................................................32
Hynix H5TQ2G63GFR.......................................................................................................................................... 32
7. 4Gb DDR3L SDRAM.............................................................................................................................................33
Hynix H5TQ4G63GFR.......................................................................................................................................... 33
8. 32GBIT (4G X 8 BIT) NAND FLASH MEMORY..................................................................................................35
MT29F4G08ABAEAWP....................................................................................................................................... 35
9. 16M-BIT [16M x 1] CMOS SERIAL FLASH EEPROM.........................................................................................37
A. MX25L1606E SPI Flash ....................................................................................................................................37
B. M25Q32FV SPI Flash........................................................................................................................................39
10. STDP4320 (DP1.2 splıtter IC).................................................................................................................................41
11. ep9162s & EPF025r (HDMI 2.0a / HDCP2.2 Splitter IC)........................................................................................43
12. OPS - OPEN PLUGGABLE SPECIFICATION(OPtıonal) ......................................................................................46
13. TUNER (Optıonal)..................................................................................................................................................50
M88TS2022 SatellIte Tuner................................................................................................................................... 50
14. DEMODULATOR STAGE (Optıonal)....................................................................................................................52
15. LNB SUPPLY AND CONTROL IC (Optıonal).......................................................................................................55
TPS65233.............................................................................................................................................................. 55
16. bq32000 rtc Real-Time Clock (Optıonal).................................................................................................................56
17. SOFTWARE UPDATE...........................................................................................................................................57

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

3
•1 Dsub9 RS232
•1 RJ45 10/100 Support Ethernet
•1 RJ12 (for service only)
•Tuner ATV/DVB-T/T2/C (optional)
•4K2K@ 50/100Hz Vby1, FHD@ 50/100Hz LVDS interface
2. MICROCONTROLLER (MSTAR MSD95M0D)
General Description

4
Features

5

6

7

8

9
Table 1: Recommended operating conditions.
Table 2: Absolute Maximum Ratings