Hitachi 55HK6T64U User manual

HITACHI
55HK6T64U
55293DLB
MB100
SERVICE MANUAL

1
Table of Contents
1. INTRODUCTION ..........................................................................................................................................................2
2. TUNER ...........................................................................................................................................................................2
A. SI2157 TerrestrIal and Cable TV Tuner ......................................................................................................................2
B. M88TS2022 Satellıte Tuner........................................................................................................................................5
3. AUDIO AMPLIFIER STAGES......................................................................................................................................6
A. MAIN AMPLIFIER (TAS5719) ......................................................................................................................................6
B. HEAD-PHONE AMPLIFIER STAGE..............................................................................................................................10
C. SUBWOOFER AMPLIFIER STAGE ..............................................................................................................................11
4. POWER STAGE........................................................................................................................................................... 16
5. MICROCONTROLLER (MSTAR MSD95C0H)......................................................................................................... 30
6. VIDEO BACK-END PROCESSOR (MSTAR) ........................................................................................................... 37
7. 1Gb DDR3 SDRAM ..................................................................................................................................................... 41
8. 2Gb DDR3 SDRAM ..................................................................................................................................................... 42
9. 32Gbit (4G x 8 bit) NAND Flash Memory................................................................................................................... 43
10. 16M-BIT [16M x 1] CMOS SERIAL FLASH EEPROM ............................................................................................ 45
11. Demodulator Stage........................................................................................................................................................ 49
12. LNB supply and control IC........................................................................................................................................... 53
13. Troubleshootıng ............................................................................................................................................................ 54
A. No Backlıght Problem ..............................................................................................................................................54
D. CI Module Problem ..................................................................................................................................................56
E. Stayıng ın Stand-by Mode ........................................................................................................................................58
F. IR Problem................................................................................................................................................................58
G. Keypad Touchpad Problems ....................................................................................................................................59
H. USB Problems...........................................................................................................................................................59
İ. No Sound Problem ...................................................................................................................................................60
J. Standby On/Off Problem .........................................................................................................................................61
K. No Sıgnal Problem.................................................................................................................................................... 61
14. General Block Dıagram ................................................................................................................................................ 63
15. PLACEMENT OF BLOCKS........................................................................................................................................ 64

2
1. INTRODUCTION
17MB100 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
Mılti-purpose CPU for OS and multimedia
Peripheral and power management
Supported peripherals are:
1 RF input VHF I, VHF III, UHF
1 Satellite input
1 Side AV (CVBS, R/L_Audio)
1 Side SCART socket(Common)
1 YPbPr (Common)
1 Side S-Video(Common)
1 PC input(Common)
4 HDMI input(Common)
1 Common interface(Common)
1 Optic S/PDIF output(Common)
1 Stereo audio input for PC(Common)
1 Subwoofer output(Common)
1 Headphone(Common)
2x USB3.0 and 1xUSB2.0(Common)
1 Ethernet-RJ45 (Common)
1 External Touchpad(Common)
Internal Wi-Fi and BT
2. TUNER
A. SI2157 TERRESTRIAL AND CABLE TV TUNER
Description
The Si2157 is Silicon Labs' fifth-generation hybrid TV tuner supporting all worldwide terrestrial and cable TV
standards. Requiring no external balun, SAW filters, wirewound inductors or LNAs, the Si2157 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 Si2157 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 and discrete MOPLL-based tuners. The Si2157 also incorporates a harmonic-
rejection mixer to deliver excellent Wi-Fi and LTE immunity. For the best performance with next-generation
digital TV standards such as DVB-T2/C2, the Si2157 delivers industry-leading phase noise performance.

3
Features
Worldwide hybrid TV tuner
oAnalog TV: NTSC, PAL/SECAM
oDigital TV: ATSC/QAM, DVBT2/T/C2/C, ISDB-T/C, DTMB
o42-1002 MHz frequency range
Industry-leading margin to A/74,
NorDig, DTG, ARIB, EN55020,
OpenCable™
Lowest BOM for a hybrid TV tuner
oNo balun at RF input
oIntegrated tracking filters requiring no external inductors or SAW filters
oIncreased ESD protection on 6 pins
Best-in-class real-world reception
oExceeds MOPLL-based tuners
oLowest phase noise
oHigh Wi-Fi and LTE immunity
Low power consumption
o3.3 V and 1.8 V power supplies
o3.3 V single-supply option
Integrated power-on reset circuit
Single or separate output pins for ALIF/DLIF connection to SoC
Standard CMOS process
4 x 4 mm, 28-pin QFN package
RoHS compliant
Figure: Si2157 Pin description

4
Table: Pin Functions

5
B. M88TS2022 SATELLITE TUNER
Pin Assigment

6
Absolute Maximum Ratings
Recommended Operating Conditions
3. AUDIO AMPLIFIER STAGES
A. MAIN AMPLIFIER (TAS5719)
General Description
The TAS5717/TAS5719 is a 10-W/15-W, efficient,digital audio-power amplifier for driving stereo bridge-
tied speakers. One serial data input allows processing of up to two discrete audio channels and seamless
integration to most digital audio processors and MPEG decoders. The device accepts a wide of input data and
data rates. A fully programmable data path routes these channels to the internal speaker drivers.
The TAS5717/9 is a slave-only device receiving all clocks from external sources. The TAS5717/TAS5719
operates with a PWM carrier between a 384-kHz switching rate and a 352-KHz switching rate, depending on
the input sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise floor and
excellent dynamic range from 20 Hz to 20 kHz.

7
Features
• Audio Input/Output
oTAS5717 Supports 2×10 W and TAS5719 Supports 2×15 W Output
oWide PVDD Range, From 4.5 V to 26 V
oEfficient Class-D Operation Eliminates Need for Heatsinks
oRequires Only 3.3 V and PVDD
oOne Serial Audio Input (Two Audio Channels)
oI2C Address Selection via PIN (Chip Select)
oSupports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)
oExternal Headphone-Amplifier Shutdown Signal
oIntegrated CAP-Free Headphone Amplifier
oStereo Headphone (Stereo 2-V RMS Line Driver) Outputs
• Audio/PWM Processing
oIndependent Channel Volume Controls With 24-dB to Mute
oProgrammable Two-Band Dynamic Range Control
o14 Programmable Biquads for Speaker EQ
oProgrammable Coefficients for DRC Filters
oDC Blocking Filters
o0.125-dB Fine Volume Support
• General Features
oSerial Control Interface Operational Without MCLK
oFactory-Trimmed Internal Oscillator for Automatic Rate Detection
oSurface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package
oAD, BD, and Ternary PWM-Mode Support
oThermal and Short-Circuit Protection
• Benefits
oEQ: Speaker Equalization Improves Audio Performance
oDRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection,
Easy Listening, Night-Mode Listening
oDirectPath Technology: Eliminates Bulky DC Blocking Capacitors
oStereo Headphone/Stereo Line Drivers: Adjust Gain via External Resistors, Dedicated Active
Headpone Mute Pin, High Signal-to-Noise Ratio
oTwo-Band DRC: Set Two Different Thresholds for Low- and High-Frequency Content

8
Pin descriptions and functions:
Figure: TAS5719 Pin descriptions

9
Table: TAS5719 Pin Functions

10
Table: Recommended Operating Conditions
B. HEAD-PHONE AMPLIFIER STAGE
Head-phone is a SoC (single on chip) configuration in mainboard, Design scheme is shown in figure 3.
Figure: Head-phone

11
C. SUBWOOFER AMPLIFIER STAGE
PREAMPLIFIER (DRV632)
Description
The DRV632 is a 2-VRMS pop-free stereo line driver designed to allow the removal of the output dc-
blocking capacitors for reduced component count and cost. The device is ideal for single-supply electronics
where size and cost are critical design parameters.
Designed using TI’s patented DirectPath™ technology, The DRV632 is capable of driving 2 VRMS into a
10-kΩload with 3.3-V supply voltage. The device has differential inputs and uses external gain-setting resistors
to support a gain range of ±1 V/V to ±10 V/V, and gain can be configured individually for each channel. Line
outputs have ±8-kV IEC ESD protection, requiring just a simple resistor-capacitor ESD protection circuit. The
DRV632 has built-in active-mute control for pop-free audio on/off control. The DRV632 has an external
undervoltage detector that mutes the output when the power supply is removed, ensuring a pop-free shutdown.
Using the DRV632 in audio products can reduce component count considerably compared to traditional
methods of generating a 2-VRMS output. The DRV632 does not require a power supply greater than 3.3 V to
generate its 5.6-Vpp output, nor does it require a split-rail power supply. The DRV632 integrates its own charge
pump to generate a negative supply rail that provides a clean, pop-free ground-biased 2-VRMS output.
The DRV632 is available in a 14-pin TSSOP.
Features
Stereo DirectPath™ Audio Line Driver
o2 Vrms Into 10 kWith 3.3-V Supply
Low THD+N < 0.01% at 2 Vrms Into 10 k
High SNR, >90 dB
600-Output Load Compliant
Differential Input and Single-Ended Output
Adjustable Gain by External Gain-Setting Resistors
Low DC Offset, <1 mV
Ground-Referenced Outputs Eliminate DC-Blocking Capacitors
oReduce Board Area
oReduce Component Cost
oImprove THD+N Performance
oNo Degradation of Low-Frequency Response Due to Output Capacitors
Short-Circuit Protection
Click- and Pop-Reduction Circuitry
External Undervoltage Mute
Active Mute Control for Pop-Free Audio On/Off Control
Space-Saving TSSOP Package

12
Figure: PW package
Table: Pin functions
Table: Recommended operating conditions
SUB WOOFER MAIN AMPLIFIER (TAS5727)
Description
The TAS5727 is a 25-W, efficient, digital-audio power amplifier for driving stereo bridge-tied
speakers.One serial data input allows processing of up to two discrete audio processors and MPEG decoders.
The device accepts a wide range of input data and data rates. A fully programmable data path routes these
channels to the internal speaker drivers.
The TAS5727 is a slave-only device receiving all clocks from external sources. The TAS5727 operates
with a PWM carrier between a 384-kHz switching rate amd a 288-kHz switching rate, depending on the input
sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise flor and excellent
dynamic range from 20 Hz to 20 Khz.

13
Features
Audio Input/Output
o25 W Into an 8-Load From a 20-V Supply
oWide PVDD Range, From 8V to 26V
oSupports BTL Configuration with 4- Load
oEfficient Class-D Operation Elminates Need for Heatsinks
oOne serial Audio Input (Two Audio Channels)
oI2C Address Selection Pin (Chip Select)
oSingle Output Filter PBTL Support
oSupports 441-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)
Audio/PWM Processing
oIndepent Channel Volume Control With Gain of 24 dB to Mute With 0.125-dB
Resolution Steps
oProgrammable Two-Band Dynamic-Range Control
o18 Programmable Biquads for Speaker EQ and Other Audio-Processing Features
oProgrammable Coefficients for DRC Filters
oDC Blocking Filters
General Features
oI2C Serial Control Interface Operational Without MCLK
oRequires Only 3.3 V and PVDD
oNo External Oscillator: Internal Oscillator for Automatic Rate Detection
oSurface-Mount, 48-Pin HTQFP Package
oThermal and Short-Circuit Protection
o106-dB SNR, A-Weighted
oAD,BD, and Ternary Modulation
oUp to 90% Efficient
oPWM Level Meter to Measure the Digital Power Profile
Benefits
oEQ: Speaker Equalization Improves Audio Performance
oTwo-Band DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker
Protection, Easy Listening, Night-Mode Listening
oAutodetect: Automatically Detects Sample-Rate Changes. No need for External Microprocessor
Intervention
Applications:
oLCD TV, LED TV, Soundbar

14
Table: Electrical Characteristics
Figure: PHP Package (Top View)

15
Table: Pin Functions

16
4. POWER STAGE
Figure: Power socket and options
Power socket is used for taking voltages which are 12V, 5V and 24V(VDD_Audio). These voltages are
produced in power board. Also socket is used for giving dimming, backlight and standby signals with power
board. It is shown in figure 7.
Figure: General illustration of voltage stages on main board

17
24V(VDD_Audio) goes directly to the audio side, through power socket other incoming voltages from
power card are converted several voltages, shown in figure 8.
List of the components are:
TPS54528
TPS54328
TPS54821
TPS51363
APL5910
LM1117
TPS54528
General Description
The TPS54528 is an adaptive on-time D-CAP2 mode synchronous buck converter.The TPS54528 enables
system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low
component count, low standby current solution. The main control loop for the TPS54528 uses the D-CAP2
mode control that provides a fast transient response with no external compensation components. The adaptive
on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode
operation at light loads. Eco-mode allows the TSP54528 to maintain high efficiency during lighter load
conditions. The TPS54528 also has a proprietary circuit that enables the device to adopt to both low equivalent
series resistance (ESR)output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.
The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V
and 6 V. The device also features an adjustable soft start time. The TPS54528 is available in the 8-pin DDA
package, and designed to operate from -40 C to 85 C.
Features
D-CAP2 Mode Enables Fast Transient Response
Low Output ripple and Allows Ceramic Output Capacitor
Wide VIN Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.76 V to 6 V
Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications- 65 mOhm (High Side)
and 36 mOhm (Low Side)
High Efficiency, less than 10 mikroAmper at shutdown
High Initial Bandgap Reference Accuracy
Adjustable Soft Start
Pre-Biased Soft Start
650-kHz Switching Frequency (fSW)
Cycle By Cycle Over Current Limit
Auto-Skip Eco-mode for High Efficiency at Light Load
Applications
Wide Range of Applications for Low Voltage System
Digital TV Power Supply
High Definition Blu-ray Disc Players

18
Networking Home Terminal
Digital Set Top Box(STB)
Table: Recommended operating conditions
Figure: Pin Description
Table: Pin functions
TPS54328
General Description
The TPS54328 is an adaptive on-time D-CAP2 mode synchronous buck converter.The TPS54328 enables
system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low
component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2
mode control that provides a fast transient response with no external compensation components. The adaptive
on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode
operation at light loads. Eco-mode allows the TSP54328 to maintain high efficiency during lighter load
conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt to both low equivalent

19
series resistance (ESR)output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors.
The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V
and 7 V. The device also features an adjustable soft start time. The TPS54328 is available in the 8-pin DDA and
10-pin DRC packages, and is designed to operate over the ambient temperature range of -40C to 85C.
Features
D-CAP2 Mode Enables Fast Transient Response
Low Output ripple and Allows Ceramic Output Capacitor
Wide VIN Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.76 V to 7 V
Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications- 100 mOhm (High
Side) and 70 mOhm (Low Side)
High Efficiency, less than 10 mikroAmper at shutdown
High Initial Bandgap Reference Accuracy
Adjustable Soft Start
Pre-Biased Soft Start
700-kHz Switching Frequency (fSW)
Cycle By Cycle Over Current Limit
Auto-Skip Eco-mode for High Efficiency at Light Load
Applications
Wide Range of Applications for Low Voltage System
Digital TV Power Supply
High Definition Blu-ray Disc Players
Networking Home Terminal
Digital Set Top Box(STB)
Table: Recommended operating conditions
Figure: Pin Description