VESTEL MB130 IDTV User manual

MB130 IDTV
SERVICE MANUAL

1
Table of Contents
1. INTRODUCTION ..........................................................................................................................................................3
A. General Block DIagram ..............................................................................................................................................4
B. Placement of Blocks...................................................................................................................................................5
2. T/T2/C/A TUNER (U118) .............................................................................................................................................. 6
3. S/S2 TUNER (U116) OPTIONAL ................................................................................................................................. 8
4. AUDIO AMPLIFIER STAGES......................................................................................................................................9
A. MAIN AMPLIFIER (U123) (8W/10W/12W options)..................................................................................................10
B. HEADPHONE AMPLIFIER (U120) .............................................................................................................................. 12
C. SCART AUDIO AMPLIFIER (U119) .............................................................................................................................13
5. POWER STAGE........................................................................................................................................................... 14
A. FDC642P................................................................................................................................................................... 16
B. NTGS3446 ................................................................................................................................................................16
C. RT7278G...................................................................................................................................................................18
D. TPS563200 ...............................................................................................................................................................20
E. TPS54821 .................................................................................................................................................................22
F. AP2111..................................................................................................................................................................... 24
6. MICROCONTROLLER ............................................................................................................................................... 25
A. MSTAR G10 MSD95PMVW4 (U114) ........................................................................................................................25
7. 2GB DDR3 SDRAM .................................................................................................................................................... 33
A. Hynix H5TQ2G63GFR-TEC (U113-U110) .................................................................................................................. 33
8. 2GBIT - 4GBIT(CONNECTED OPTION) (256M X 8 BIT) NAND FLASH MEMORY.......................................... 34
A. MT29F2G08ABAEAWP (U105) .................................................................................................................................34
9. 16M-BIT [16M x 1] CMOS SERIAL FLASH EEPROM ............................................................................................ 36
A. KH25L1606EM2-12G Macronix SPI Flash (U115).....................................................................................................36
10. USB INTERFACE........................................................................................................................................................ 37
A. USB POWER SWITCH TPS2553-1 (U109-U117-U122) .............................................................................................38
11. CI INTERFACE............................................................................................................................................................ 38
12. SOFTWARE UPDATE ................................................................................................................................................ 39
A. Main Software Update............................................................................................................................................. 39
13. TROUBLESHOOTING................................................................................................................................................ 39
A. No Backlight Problem ..............................................................................................................................................39
B. CI Module Problem .................................................................................................................................................. 42
C. Staying In Stand-by Mode ........................................................................................................................................ 43
D. IR Problem................................................................................................................................................................43
E. Keypad Touchpad Problems .................................................................................................................................... 44

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F. USB Problems...........................................................................................................................................................44
G. No Sound Problem ...................................................................................................................................................45
H. Standby On/Off Problem .........................................................................................................................................46
İ. No SIgnal Problem....................................................................................................................................................46
14. SERVICE MENU SETTINGS ..................................................................................................................................... 48

3
1.INTRODUCTION
17MB130 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 just 50Hz 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 Side AV (CVBS, R/L_Audio)
1 SCART socket(Common)
1 Slim SCART socket (Optional)
1 YPbPr (from VGA with special cable) (Optional)
1 PC input(Common)
3 HDMI input (with ARC option from 1st input)
1 Common interface(Common)
1 Optic/ Quax S/PDIF output
1 Headphone(Common)
2 USB(1X Side Common, 1X Side Optional) and 2x internal USB for Wifi/Bluetooth
1 Ethernet-RJ45
1 3way/External Touchpad/Tact Switch (Common)

A. GENERAL BLOCK DIAGRAM
4
Mstar
G10V
23X23
HDMI 1 HDMI 2
USB 1
2.0
8 Lane VbyONE
LVDS/VbyONE
AUDIO I/OsVIDEO I/Os
STBY
GPIOs
SPI
FLASH
GPIOs
XTAL
SC Pin8
SCART
VGA
SC_CVBS
OUT
SC FB
SC_RGB
SC_CVBS
IN
AMP
SC_L/R
SC_L/R
OUT
SC_AUD_R/L_IN
VGA_RGB
VGA HS/VS
2Gb DDR3
MEMORY
CI SOCKET
SAT TUNER
Montage
M88TS2022
5V_VCC
HDMI 1
TMDS
HDMI 2
TMDS
I2C
I2C
HDMI
5V
HDMI
5V
CEC
USB1_DN
USB1_DP
5V_VCC
3V3_STBY
SYS_SDA
SYS_SCL
BAV_CVBS
IN
RF
1V5_VCC
LNBP
TI
TPS65233
LNB_SUP 3V3_VCC
12V_VCC
DISEQC
H/V
Selection
RF
Speak. Connector
HP_RIGHT
HP_LEFT
ESMT
AD82587D
2X6W/8W/
10W AMP
SPEAKERs
HPHONE
SPDIF_OUT
Led/IR Socket
Keyboard Socket
Keyboard
IR – Led1/2
KEYBOARD
VGA
HDMI
STBY_ON/OFF
PWM
BACKLIGHT_DIM
3D_SYNC_OUT
KEYBOARD
SPI
TOUCHPAD
UART
AMP_RST
HP_DETECT
HP_AMP_MUTE
PC_SCL/SDA
PCM_PWR_CTRL
3D_ENABLE
STBY_ON/OFF
RX/TX_HOTEL
AUX_RESET
TUN_RESET
FLASH_WPN1
HDMI DET
PROTECT
USB-ENABLE
BACKLIGHT
PANEL_VCC
RESET_HUB
TUNER_RESET
ResetN
22kHz
AD22657B
HP AMP.
12V/24V_VCC
MX25l512
PWR
1
TS BLOCK
CI_TS_IN
CI_TS_IN
DIGITAL/ANALOG_IF
PWR
2
HP_OUT_L
HP_OUT_R
HDMI 3
HDMI 3
I2C
HDMI
5V
TMDS
SYS_SDA
SYS_SCL
USB 4
2.0
ETHERNET
ET_T
ET_R
USB1
USB2
DVBS/S2
USB_WIFI_DN
USB_WIFI_DP
DIGITAL/ ANALOG
DEMOD
PWR
4
1V5_VCC
PWR
3
3V3_VCC
NAND
NAND FLASH
512MB
3V3_VCC
TS_OUT
24 MHz
ARC
I2S
RAM BUS
PANEL_VCC
51
pins
LVDS/
VbyONE
SOCKET
SPDIF OUT
SAV CVBS IN
USB_BT_DN
USB_BT_DP
USB 2
2.0
USB2_DN
USB2_DP
5V_VCC
USB 3
2.0
SAT
I/Q
TS_IN
1V5_VCC
SAV AUDIO IN
SAV_L_IN
SAV_R_IN
DIGITAL SAT
DEMOD
2Gb DDR3
MEMORY
1V1_VCC
DVD_CVBS
IN
SYS_SDA
SYS_SCL
DATA ADDRESS DATA
TUNER
Si2151

5
B. PLACEMENT OF BLOCKS
RAM
FLAS
H
CI
SPI
MAIN
IC
HDMI
Connectors
HP
Tuner
S/PDIF
RJ45
VGA
LED
CON
Keyb
oard
CON
SPEAK.
CON
Audio
Amp
SCART
SAV
USB
Power
Con.
Internal
Wifi& BT
Connector
3-WAY
SW
L
V
D
S
C
O
n
Sat. Tuner

6
2.T/T2/C/ATUNER (U118)
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
Figure 1.1 Si2151 Pin description

7

8
3.S/S2 TUNER (U116) OPTIONAL
Description
Figure: Pin description
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

9
Block Diagram
4.AUDIOAMPLIFIER STAGES
Figure: The block diagram of the audio part