VESTEL MB130E IDTV User manual

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MB130E IDTV
SERVICE MANUAL

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Table of Contents
1. INTRODUCTION...................................................................................................................................... 3
A. General Block Diagram ......................................................................................................................... 4
2. T/T2/C/A TUNER (U147).......................................................................................................................... 6
3. S/S2 TUNER (U146) OPTIONAL ............................................................................................................. 8
4. AUDIO AMPLIFIER STAGES ............................................................................................................... 11
A. MAIN AMPLIFIER (U121) (8W/10W/12W options).......................................................................... 11
B. HEADPHONE AMPLIFIER (U127) ................................................................................................... 14
C. SUBWOOFER AMPLIFIER (U124) (12 W)....................................................................................... 16
5. POWER STAGE...................................................................................................................................... 19
A. FDC642P............................................................................................................................................. 21
B. NTGS3446 .......................................................................................................................................... 21
C. RT7278G............................................................................................................................................. 22
D. TPS563200.......................................................................................................................................... 24
E. TPS54821............................................................................................................................................ 26
F. AP2111 ............................................................................................................................................... 28
6. MICROCONTROLLER........................................................................................................................... 29
A. MSTAR G10 MSD95PMVW4 (U128)................................................................................................ 29
7. VIDEO BACK AND PROCESSOR (MSTAR) (U105)............................................................................ 37
8. K1P MSD7R131 (U111).......................................................................................................................... 40
9. 4GB DDR3 SDRAM................................................................................................................................ 42
A. Hynix H5TQ4G63EFR-TEC (U132-U133)......................................................................................... 42
10. 4 GBIT NAND FLASH MEMORY ......................................................................................................... 43
A. MT29F4G08ABAEAWP (U114)......................................................................................................... 43
11. 16M-BIT [16M x 1] CMOS SERIAL FLASH EEPROM ......................................................................... 45
A. KH25L1606EM2-12G Macronix SPI Flash (U129) ............................................................................. 45
12. SPI 128Mb W25Q128FVSIG FOR K1P (U110)....................................................................................... 46
13. SPI 32Mb W25Q32FVSSIG FOR MFC (U108)....................................................................................... 47
14. USB INTERFACE................................................................................................................................... 47
A. USB POWER SWITCH TPS2553-1 (U109-U117-U122) ................................................................... 48
15. CI INTERFACE....................................................................................................................................... 49
16. SOFTWARE UPDATE............................................................................................................................ 49
A. Main Software Update......................................................................................................................... 49
17. TROUBLESHOOTING ........................................................................................................................... 49
A. No Backlight Problem............................................................................................................................ 49

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B. CI Module Problem ............................................................................................................................. 52
C. IR Problem .......................................................................................................................................... 54
D. Keypad Touchpad Problems ................................................................................................................ 55
E. USB Problems..................................................................................................................................... 56
F. No Sound Problem............................................................................................................................... 57
G. Standby On/Off Problem ..................................................................................................................... 58
H. No Signal Problem............................................................................................................................... 58
18. SERVICE MENU SETTINGS................................................................................................................. 59

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1. INTRODUCTION
17MB130 E 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 board can be driven 50Hz and 100Hz UHD panels.
Key features include:
•Combo Front-End Demodulator
•A multi standart A/V format decoder
•The MACEpro video processor
•Home theatre sound processor
•Rich internet connectivity and completed digital home network solution
•Dual-stream decoder for 3D contents
•Mılti-purpose CPU for OS and multimedia
•Peripheral and power management
•Embedded DRAM (for connected option)
Supported peripherals are:
•1 RF input VHF I, VHF III, UHF
•1 Satellite input
•1 Back AV (CVBS, R/L_Audio)
•1 SCART socket
•1 YPbPr in
•1 PC input(Common)
•1 Subwoofer output(Common)
•4xside HDMI inputs (with ARC option from 2nd or 3rd input)
•1 Common interface(Common)
•1 Optic/ Quax S/PDIF output
•1 Headphone(Common)
•3 USB(2X Side Common, 1X back Optional) and 2x internal USB for Wifi/Bluetooth
•1 Ethernet-RJ45
•1 External Touchpad/Tact Switch (Common)

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A. GENERAL BLOCK DİAGRAM

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FLAS
H
CI
MAIN
IC
Power Con.
V
B
Y
O
N
E
C
O
n
Subwoofer
Amp
MFC
RAM
HP
HDMI
Connectors
Y
PB
PR
USB
USB
Tuner
S/PDIF
RJ45
VGA
LED
CON
Keyboard
CON
Audio
Amp
SCART
Internal
Wifi& BT
Connector
Sat. Tuner
A
U
D
I
O
IN
USB

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2. T/T2/C/ATUNER (U147)
Description:
The Si2151 is Silicon Labs' sixth-generation hybrid TV tuner supporting all worldwide terrestrial and cable
TV standards. Requiring no external balun, SAW filters, wirewound inductors or LNAs, the Si2151 offers the
lowest-cost BOM for a hybrid TV tuner. Also included are an integrated power-on reset circuit and an option
for single power supply operation. As with prior-generation Silicon Labs TV tuners, the Si2151 maintains very
high linearity and low noise to deliver superior picture quality and a higher number of received stations when
compared to other silicon tuners. The Si2151 offers increased immunity to WiFi and LTE interference,
eliminating the need for external filtering. For the best performance with next-generation digital TV standards,
such as DVB-T2/C2, the Si2151 delivers industry-leading phase noise performance.
Features:
•Worldwide hybrid TV tuner
oAnalog TV: NTSC, PAL/SECAM
oDigital TV: ATSC/QAM, DVBT2/T/C2/C, ISDB-T/C, DTMB
•1.7 MHz, 6 MHz, 7 MHz, 8 MHz, and 10 MHz channel bandwidths
•42-1002 MHz frequency range
•Industry-leading margin to A/74, NorDig, DTG, ARIB, EN55020, OpenCable™,DTMB
•Lowest BOM for a hybrid TV tuner
oNo balun, SAW filters, or external inductors required
oIncreased ESD protection on 4pins
•Best-in-class real-world reception
oLowest phase noise
oHigh Wi-Fi and LTE immunity
•Low power consumption
o3.3 V and 1.8 V power supplies
oIntegrated 1.8 V LDO for 3.3 V singlesupply operation
•Integrated power-on reset circuit
•Standard CMOS process
•3x3 mm, 24-pin QFN package
•RoHS compliant

7
,
Figure 1.1 Si2151 Pin description

8
3. S/S2 TUNER (U146) OPTIONAL
Description
Figure: Pin description

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Features
•Single-Chip tuner
•Compliant with DVB-S2 and ABS-S standards
•Support PSK, (PSK and 16APSK
•Direct-conversion from L-band to baseband
•Symbol rate:1 to 45 Msybol/s
•Integrated VCOs and PLL, with on-chip inductors varactors and loop filter
•Integrated RF AGC for optimal performance
•Integrated baseband DC offset cancellation removes external loop filters
•Excellent immunity to strong adjacent undersired channels
•Integrated clock driver provides auxiliary divided clock output for other devices
•Selectable RF bypass
•Support sleep mode
•2-wire serial bus with 3.3V compatible logic levels
•Power supply+3.3V
•28-pin QFN package
•RoSH compliant