Vestel 17MB69 Schematic
TABLE OF CONTENTS
INTRODUCTION ...................................................................................................................... 3
General Block Diagram .............................................................................................................. 4
MB69 Placement of Blocks ........................................................................................................ 5
1. TUNER(Xceive5200) ................................................................................................................. 6
1.1. General description of Xceive5200 ................................................................................ 6
1.2. Features of Xceive5200 .................................................................................................. 6
1.3. Pinning ........................................................................................................................... 7
1.4. IF Filter Responses ......................................................................................................... 8
2. AUDIO AMPLIFIER STAGE WITH NTP8030 ....................................................................... 9
2.1. General Description ........................................................................................................ 9
2.2. Features .......................................................................................................................... 9
2.3. Absolute Ratings .......................................................................................................... 11
2.3.1. Electrical Characteristics .............................................................................................. 11
2.3.1.1.Absolute Maximum Ratings ......................................................................................... 11
2.3.1.2.Recommended Operating Conditions .......................................................................... 11
2.3.1.3.Electrical Characteristics .............................................................................................. 11
2.3.1.4.Performance Specifications .......................................................................................... 11
2.4. Pinning ..................................................................................................................... ……
3. POWER STAGE ....................................................................... Error! Bookmark not defined.
3.1. Power Management ...................................................................................................... 18
3.1.1. MB69 Power Management W/PW26 ................................................................................ 18
3.1.2. MB69 Power Management W/PW25 & W/PW46 & W/PW27 & W/PW03 % W/PW04 ...... 19
4. MICROCONTROLLER – MSTAR(U7) .....................................................................................
4.1. General Description ...................................................................................................... 20
4.2. General Description ...................................................................................................... 20
4.3. MSTAR Block Diagram .................................................................................................. 25
4.4. Reset Circuit ................................................................................................................. 26
5. CI INTERFACE ........................................................................ Error! Bookmark not defined.
6. USB INTERFACE ................................................................................................................... 27
7. DDR2 SDRAM 8M × 4 BANKS × 16 BIT (W9751G6JB) (U10) .......................................... 28
7.1. General Description ...................................................................................................... 28
7.2. Features ........................................................................................................................ 28
7.3. Electrical Characteristics .............................................................................................. 29
7.4. Pinning ......................................................................................................................... 30
8. SERVICE MENU SETTINGS ............................................................................................. 32
8.1. Video Settings .............................................................................................................. 33
8.2. Audio Settings .............................................................................................................. 34
8.3. Options ......................................................................................................................... 35
8.4. Tuning Settings ............................................................................................................ 37
8.5. Source Settings ............................................................................................................. 38
8.6. Diagnostic ..................................................................................................................... 39
8.7. USB Operations ............................................................................................................ 39
9. SOFTWARE UPDATE ........................................................................................................ 40
10. TROUBLESHOOTING ...........................................................................................................
10.2. CI Module Problem ..........................................................................................................
10.3. Led Blinking Problem ......................................................................................................
10.4. IR Problem ................................................................................................................... 45
10.6. USB Problems ..................................................................................................................
10.7. No Sound Problem ...........................................................................................................
10.8. No Sound Problem at Headphone ................................................................................ 48
10.9. Standby On/Off Problem .............................................................................................. 48
DVD Problems ......................................................................................................................... 49
10.10. No Signal Problem ................................................................................................... 50
INTRODUCTION
17MB69 main board is driven by MStar SOC. This IC is capable of handling Video
and audio processing, Scaling-Display processing, 3D comb filter, OSD and text
processing, LVDS transmitting, channel and MPEG2/4 decoding, integrated DVB-T/C
demodulator and media center functionality.
TV supports PAL, SECAM, NTSC color standards and multiple transmission
standards as B/G, D/K, I/I’, and L/L’ including German and NICAM stereo. Also DVB
T, DVB-C are supported internal demodulators of Mstar IC and DVB-T2 is supported
with external demodulator.
Sound system output is supplying max. 2x8W (1%THD) for stereo 8Ω speakers
Supported peripherals are:
1 RF input VHF I, VHF III, UHF @ 75Ohm(Common)
1 Side AV (CVBS, R/L_Audio)
2 SCART socket(Common)
1 YPbPr (Common)
1 PC input(Common)
4 HDMI 1.3 input(2 HDMI inputs are common, 4 inputs are optional)
1 S/PDIF output(Common)
1 Headphone(Common)
1 Common interface(Common)
2 USB(Common)
1 DVD(Optional)
1 External Keypad(Optional)
1 External TouchPad(Optional)
General Block
Diagram
MB69 Placement of Blocks
1. TUNER(XC5200)
The Single-Chip Multi-Standard Tuner XC5200C supports all analog TV formats
transmitted worldwide in the 42-1000 MHz band on either cable or terrestrial broadcast
channels. It implements on-chip tuning, and channel filtering without external (SAW) filters
and has no manually tunable parts.
The broadband tuner converts the selected channel into an Intermediate Frequency (IF),
which is then sampled by an internal high-resolution analog-to-digital converter (A/D) for
further processing..
The IF signals are filtered using a standard-dependent high-rejection channel filter and
converted to a user-programmable output frequency. At the output of the D/A converter,
the TV signal is low-pass filtered using a high-performance smoothing filter and input to a
variable gain amplifier. The IF output amplifier gain can be controlled via an external
analog signal on Vagc.
1.1. General description of Samsung XC5200:
Tuner XC5200C supports all analog TV formats transmitted worldwide in the 42-1000
MHz band on either cable or terrestrial broadcast channels and the broadband tuner
converts the selected channel into an Intermediate Frequency (IF).
1.2. Features:
• Receiving System: All analog TV formats transmitted worldwide in the 42-1000
MHz band on either cable or terrestrial broadcast channels
• Highly integrated tuner design (no SAWs):
Alignment-free
Quartz-stable and accurate
No externally tunable parts
• Multi-standard RF-to-IF receiver
• Integrated RF PLL filter reducing risk of noise pickup on the board
• Integrated DSP for high quality IF filtering both in analog and digital modes
• ATV mode optimized for use with external analog demodulators
• DTV Mode for operation with external DTV demodulator. XC5200C applies filters
and converts signal to arbitrary output frequency. Supports standards such as
ATSC, OpenCable, DVB-C, DVB-T, ISDB-T, DMB-TH
1.3. Pinning:
1.4. IF Filter Responses:
2. AUDIO AMPLIFIER STAGE WITH NTP8030(U21)
2.1. General Description
The NTP-8030 is a single chip full digital audio amplifier including power stage for
stereo amplifier system. NTP-8030 is integrated with versatile digital audio signal
processing functions, high-performance, high-fidelity fully digital PWM modulator and two
high-power full bridge MOSFET power stages. The NTP-8030 receives digital serial audio
data with sampling frequency from 8KHz to 192KHz. It delivers 2 x 30 watt in stereo mode
without heat sink. The NTP-8030 has mixer and Bi-Quad filters which can be used to
implement the essential audio signal processing functions like loudness control, loud
speaker response compensation and parametric equalizers. All the functions of the NTP8030 can be controlled by internal register values via I2C host interface bus.
2.2. Features
• 2 CH Stereo (30W x 2 BTL)
• Wide Operating Supply Voltage Range (7.5V to 30V)
• Floating Point Operation
• 16 Programmable Bi-Quad Filters
• Speaker Compensation
• DC Cut, LPF, HPF
• Parametric Equalizer
• 100dB Dynamic Range
• Enhanced Dynamic Range Control
• Adaptive Loudness Compensation
• Loudness Control
• Protection Circuit
• OCP(Over Current Protection)
• OTP(Over Temperature Protection)
• UVP(Under Voltage Protection)
• High Efficiency
2.3. Absolute Ratings
2.3.1. Electrical Characteristics
2.3.1.1. Absolute Maximum Ratings
2.3.1.2. Recommended Operating Conditions
2.3.1.3. Electrical Characteristics
2.3.1.4. Performance Specifications
2.4. Pinning
3. POWER STAGE
The DC voltages required at various parts of the chassis and panel are provided by a
main power supply unit. MB69 chassis can operate with PW03, PW04, PW06, PW07,
PW25, PW26, PW27, PW46 as main power supply
The power supplies generate 18V, 12V, 5V, 3,3V DC voltages. Power stage which is onchassis generates 1V2, 2V5, 1V8, 8V and 3V3 for PW06 and PW25. These are indicated
below.
Short CCT Protection Circuit
Short circuit protection is necessary for protecting chassis and main IC against damages
when any Vcc supply shorts to ground. Protect pin should be logic high while normal
operation. When there is a short circuit protect pin should be logic low. After any short
detection, SW forces LEDs on LED card to blink.
3.1. Power Management
3.1.1. MB69 Power Management W/PW26
3.1.2. MB69 Power Management W/PW25& PW27& PW46 & PW03 & PW04
4. MICROCONTROLLER – MSTAR(U7)
4.1. General Description
The MSD9WB7PX-2 integrates DTV/multi-media all-purpose AV decoder, DVB-T
demodulator, VIF demodulator, and Sound/Video processor into a single device. This
allows the overall BOM to be reduced significantly making the MSD9WB7PX-2 a very
competitive multi-media DTV solution. For ATV users, the MSD9WB7PX-2 provides multistandard analog TV support with adaptive 3D video decoding and VBI data extraction.
The build-in audio decoder is capable of decoding FM, AM, NICAM, A2, BTSC and EIA-J
sound standards. The MSD9WB7PX-2 supplies all the necessary A/V inputs and outputs
to complete a receiver design including a multi-port HDMI receiver and component video
ADC. All input selection multiplexed for video and audio are integrated, including full
SCART support with CVBS output. The equipped MStar MACE-5 color engine is the
latest masterpiece from MStar famous color engine series providing excellent video and
picture quality in Full-HD and large-scale displaying system. To meet the increasingly
popular energy legislative requirements without the use of additional hardware, the
MSD9WB7PX-2 has an ultra low power standby mode during which an embedded MCU
can act upon standby events and wake up the system as required.
4.2. General Features
MSD9WB9PX-2, an SOC solution that supports channel decoding, MPEG decoding, and
media-centre functionality enabled by a high performance AV CODEC and CPU Key
features include,
• Digital and Analog DVB Front-End Demodulator
• A Multi-Standard A/V Format Decoder
• The MACE-5 Video Processor
• Home Theater Sound Processor
• Peripheral and Power Management
Transport Stream De-multiplexer
• Supports parallel and serial TS interface, with or without sync signal
• Supports TS input and output for external CI module
• Maximum TS data rate is 104 Mb/sec for serial or 16 MB/sec for parallel
• 32 general purpose PID filters and section filters for each transport stream de-
multiplexer
• Supports additional audio/video/PCR filters
• Supports TS DMA channel for time-shift
• Supports 3DES/DES and AES encryption/decryption
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