VESTEL 17MB15 User manual

27” TFT TV
(17MB15)
SERVICE MANUAL

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TFT TV Service Manual11/04/2006
TABLE OF CONTENTS
1. INTRODUCTION ...................................................................................................................................... 1
2. TUNER...................................................................................................................................................... 1
3. IF PART (TDA9886) ................................................................................................................................. 1
4. MULTI STANDARD SOUND PROCESSOR ............................................................................................ 2
5. VIDEO SWITCH TEA6415 ....................................................................................................................... 2
6. AUDIO AMPLIFIER STAGE WITH TPA3002D2 ...................................................................................... 2
7. MICROCONTROLLER ............................................................................................................................. 3
8. EEPROM 24C32....................................................................................................................................... 3
9. CLASS AB STEREO HEADPHONE DRIVER TDA1308 ......................................................................... 3
10. SAW FILTERS.......................................................................................................................................... 3
11. IC DESCRIPTIONS .................................................................................................................................. 4
11.1. TEA6415C ......................................................................................................................................... 5
11.1.1. General Description................................................................................................................. 5
11.1.2. Features .................................................................................................................................... 5
11.1.3. Pinning...................................................................................................................................... 5
11.2. 24LC02 .............................................................................................................................................. 6
11.2.1. Description................................................................................................................................6
11.2.2. Features .................................................................................................................................... 6
11.2.3. Pinning...................................................................................................................................... 6
11.3. TCET1102G Optocoupler.................................................................................................................. 7
11.3.1. General Description................................................................................................................. 7
11.3.2. General Features...................................................................................................................... 7
11.3.3. Applications.............................................................................................................................. 8
11.4. SVP-EX 52 ........................................................................................................................................ 8
11.4.1. General Description................................................................................................................. 8
11.5. TL431 ................................................................................................................................................ 8
11.5.1. General Description................................................................................................................. 8
11.5.2. Features..................................................................................................................................... 8
11.6. 24C32 ................................................................................................................................................ 8
11.6.1. General Description................................................................................................................. 8
11.6.2. Features .................................................................................................................................... 8
11.6.3. Pinning...................................................................................................................................... 9
11.7. 74LVC14A ....................................................................................................................................... 10
11.7.1. Description.............................................................................................................................. 10
11.7.2. Features .................................................................................................................................. 10
11.7.3. Pinning.................................................................................................................................... 10
11.8. TEA6420.......................................................................................................................................... 11
11.8.1. Features .................................................................................................................................. 11
11.8.2. Description.............................................................................................................................. 11
11.8.3. Pin Connections..................................................................................................................... 11
11.9. CS4334............................................................................................................................................ 11
11.9.1. Features .................................................................................................................................. 11
11.9.2. General Description............................................................................................................... 11
11.9.3. Pin Descriptions..................................................................................................................... 12
11.10. GAL16LV8 ....................................................................................................................................... 12
11.10.1. Description.............................................................................................................................. 12
11.10.2. Features .................................................................................................................................. 12
11.10.3. Pin connections...................................................................................................................... 13
11.11. K6R4008V1D................................................................................................................................... 13
11.11.1. Description.............................................................................................................................. 13
11.11.2. Features .................................................................................................................................. 13
11.11.3. Pin Description....................................................................................................................... 14
11.12. L6562............................................................................................................................................... 14
11.12.1. Features .................................................................................................................................. 14
11.12.2. Description.............................................................................................................................. 14
11.12.3. Pin Connections and Descriptions ...................................................................................... 15
11.13. LM1117............................................................................................................................................ 15

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11.13.1. General Description............................................................................................................... 15
11.13.2. Features .................................................................................................................................. 15
11.13.3. Applications............................................................................................................................ 15
11.13.4. Connection Diagrams............................................................................................................ 16
11.14. LM317.............................................................................................................................................. 16
11.14.1. General Description............................................................................................................... 16
11.14.2. Features .................................................................................................................................. 16
11.14.3. Pin Description....................................................................................................................... 16
11.15. LM809.............................................................................................................................................. 16
11.15.1. General Description............................................................................................................... 16
11.15.2. Features .................................................................................................................................. 16
11.15.3. Pinning.................................................................................................................................... 17
11.16. MSP34X1G...................................................................................................................................... 17
11.16.1. Introduction ............................................................................................................................ 17
11.16.2. Features .................................................................................................................................. 18
11.16.3. Pin connections...................................................................................................................... 18
11.17. M29W040B...................................................................................................................................... 20
11.17.1. Description.............................................................................................................................. 20
11.17.2. Features .................................................................................................................................. 20
11.17.3. Pin Descriptions..................................................................................................................... 21
11.18. MC33202 ......................................................................................................................................... 21
11.18.1. General Description............................................................................................................... 21
11.18.2. Features .................................................................................................................................. 21
11.18.3. Pin Connections..................................................................................................................... 21
11.19. PCF8574 ......................................................................................................................................... 22
11.19.1. General Description............................................................................................................... 22
11.19.2. Features .................................................................................................................................. 22
11.19.3. Pinning.................................................................................................................................... 22
11.20. PI5V330........................................................................................................................................... 23
11.20.1. General Description............................................................................................................... 23
11.21. SDA55XX (SDA5550)...................................................................................................................... 23
11.21.1. General description ............................................................................................................... 23
11.22. Sil 9993............................................................................................................................................ 23
11.22.1. General Description............................................................................................................... 23
11.22.2. Features .................................................................................................................................. 24
11.23. NCP1014 ......................................................................................................................................... 24
11.23.1. General Description............................................................................................................... 24
11.23.2. Features .................................................................................................................................. 24
11.23.3. Pin Connections and Descriptions ...................................................................................... 25
11.24. SN74CB3Q3305.............................................................................................................................. 25
11.24.1. General Description............................................................................................................... 25
11.24.2. Features .................................................................................................................................. 25
11.24.3. Pin Connections..................................................................................................................... 26
11.25. ST24LC21 ....................................................................................................................................... 26
11.25.1. Description.............................................................................................................................. 26
11.25.2. Features .................................................................................................................................. 26
11.25.3. Pin connections...................................................................................................................... 26
11.26. LM2576............................................................................................................................................ 27
11.26.1. General Description............................................................................................................... 27
11.26.2. Features .................................................................................................................................. 27
11.26.3. Pin description ....................................................................................................................... 27
11.27. TDA1308 ......................................................................................................................................... 27
11.27.1. General Description............................................................................................................... 27
11.27.2. Features .................................................................................................................................. 27
11.27.3. Pinning.................................................................................................................................... 28
11.28. TDA9886 ......................................................................................................................................... 28
11.28.1. General Description............................................................................................................... 28
11.28.2. Features .................................................................................................................................. 28
11.28.3. Pinning.................................................................................................................................... 28
11.29. TPA3002D2 ..................................................................................................................................... 29

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11.29.1. General Description............................................................................................................... 29
11.29.2. Features .................................................................................................................................. 29
11.29.3. Pinning.................................................................................................................................... 30
11.30. µPA672T.......................................................................................................................................... 31
11.30.1. General Description............................................................................................................... 31
11.30.2. Features .................................................................................................................................. 31
11.30.3. Pin Connection....................................................................................................................... 31
11.31. VPC3230D....................................................................................................................................... 31
11.31.1. General Description............................................................................................................... 31
11.31.2. Pin Connections and Short Descriptions............................................................................ 32
12. SERVICE MENU SETTINGS ................................................................................................................. 33
12.1. Picture Adjust .................................................................................................................................. 33
12.2. SOUND1.......................................................................................................................................... 34
12.3. SOUND 2......................................................................................................................................... 34
12.4. Options ............................................................................................................................................ 34
12.5. TV Norm .......................................................................................................................................... 35
12.6. Features .......................................................................................................................................... 35
12.7. Teletext............................................................................................................................................ 35
12.8. Source ............................................................................................................................................. 35
12.9. Menu Languages 1 & 2 ................................................................................................................... 35
13. BLOCK DIAGRAM.................................................................................................................................... 1
14. CIRCUIT DIAGRAM ................................................................................................................................. 1
15. CIRCUIT DIAGRAMS ............................................................................................................................... 3

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TFT TV Service Manual11/04/2006
1. INTRODUCTION
27” TFT TV is a progressive TV control system with built-in de-interlacer and scaler. It uses a
1366*768 panel with 16:9 aspect ratio. The TV is capable of operation in PAL, SECAM, NTSC
(playback) colour standards and multiple transmission standards as B/G, D/K, I/I’, and L/L’ including
German and NICAM stereo. Sound system output is supplying 2x8W (10%THD) for stereo 8
speakers. The chassis is equipped with many inputs and outputs allowing it to be used as a center of a
media system.
It supports following peripherals:
2 SCART sockets
1 AV input (CVBS + Stereo Audio)
1 SVHS input
1 Stereo Headphone input
1 Component input (YPbPr + Stereo Audio)
1 D-Sub 15 PC input
1 HDMI input
1 Stereo audio input for PC
Audio line out is taken from the scart with given scart-to-line out connector
2. TUNER
The tuners used in the design are combined VHF, UHF tuners suitable for CCIR systems B/G, H, L, L’,
I/I’, and D/K. The tuning is available through the digitally controlled I2C bus (PLL). Below you will find
info on one of the Tuners in use.
General description of UV1316:
The UV1316 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range of
applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L’, I and I’. The low
IF output impedance has been designed for direct drive of a wide variety of SAW filters with sufficient
suppression of triple transient.
Features of UV1316:
1. Member of the UV1300 family small sized UHF/VHF tuners
2. Systems CCIR: B/G, H, L, L’, I and I’; OIRT: D/K
3. Digitally controlled (PLL) tuning via I2C-bus
4. Off-air channels, S-cable channels and Hyper band
5. World standardised mechanical dimensions and world standard pinning
6. Compact size
7. Complies to “CENELEC EN55020” and “EN55013”
Pinning:
1. Gain control voltage (AGC) : 4.0V, Max: 4.5V
2. Tuning voltage
3. I²C-bus address select : Max: 5.5V
4. I²C-bus serial clock : Min:-0.3V, Max: 5.5V
5. I²C-bus serial data : Min:-0.3V, Max: 5.5V
6. Not connected
7. PLL supply voltage : 5.0V, Min: 4.75V, Max: 5.5V
8. ADC input
9. Tuner supply voltage : 33V, Min: 30V, Max: 35V
10. Symmetrical IF output 1
11. Symmetrical IF output 2
3. IF PART (TDA9886)
The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal
PLL. The following figure shows the simplified block diagram of the integrated circuit.
The integrated circuit comprises the following functional blocks:
VIF amplifier, Tuner and VIF-AGC, VIF-AGC detector, Frequency Phase-Locked Loop (FPLL) detector,
VCO and divider, Digital acquisition help and AFC, Video demodulator and amplifier, Sound carrier trap,
SIF amplifier, SIF-AGC detector, Single reference QSS mixer, AM demodulator, FM demodulator and

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TFT TV Service Manual11/04/2006
acquisition help, Audio amplifier and mute time constant, I²C-bus transceivers and MAD (module
address), Internal voltage stabilizer.
4. MULTI STANDARD SOUND PROCESSOR
The MSP34x1G family of single-chip Multistandard Sound Processors covers the sound processing of
all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound
processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on
a single chip.
These TV sound processing ICs include versions for processing the multichannel television sound
(MTS) signal conforming to the standard recommended by the Broadcast Television Systems
Committee (BTSC). The DBX noise reduction, or alternatively, Micronas Noise Reduction (MNR) is
performed alignment free. Other processed standards are the Japanese FM-FM multiplex standard
(EIA-J) and the FM Stereo Radio standard.
Current ICs have to perform adjustment procedures in order to achieve good stereo separation for
BTSC and EIA-J. The MSP34x1G has optimum stereo performance without any adjustments.
5. VIDEO SWITCH TEA6415
In case of three or more external sources are used, the video switch IC TEA6415 is used. The main
function of this device is to switch 8 video-input sources on the 6 outputs.
Each output can be switched on only one of each input. On each input an alignment of the lowest level
of the signal is made (bottom of sync. top for CVBS or black level for RGB signals).
Each nominal gain between any input and output is 6.5dB.For D2MAC or Chroma signal the alignment
is switched off by forcing, with an external resistor bridge, 5VDC on the input. Each input can be used
as a normal input or as a MAC or Chroma input (with external Resistor Bridge). All the switching
possibilities are changed through the BUS. Driving 75ohm load needs an external resistor. It is possible
to have the same input connected to several outputs.
6. AUDIO AMPLIFIER STAGE WITH TPA3002D2
The TPA3004D2 is a 9-W (per channel) efficient, Class-D audio amplifier for driving bridged-tied stereo
speakers. The TPA3004D2 can drive stereo speakers as low as 8 . The high efficiency of the
TPA3004D2 eliminates the need for external heatsinks when playing music.
Stereo speaker volume is controlled with a dc voltage applied to the volume control terminal offering a
range of gain from –40 dB to 36 dB. Line outputs, for driving external headphone amplifier inputs, are
also dc voltage controlled with a range of gain from –56 dB to 20 dB.
An integrated 5-V regulated supply is provided for powering an external headphone amplifier.

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7. MICROCONTROLLER
The Micronas SDA 55xx TV microcontroller is dedicated to 8 bit applications for TV control and
provides dedicated graphic features designed for modern low class to mid range TV sets. The SDA
55xx provides also an integrated general purposefully 8051-compatible microcontroller with specific
hardware features especially suitable in TV sets. The microcontroller core has been enhanced to
provide powerful features such as memory banking, data pointers and additional interrupts, etc. The
internal XRAM consists of up to 16 kBytes. The microcontroller provides an internal ROM of up to 128
kBytes. ROMless versions can access up to 1 MByte of external RAM and ROM. The 8-bit
microcontroller runs at 33.33 MHz internal clock. SDA 55xx is realized in 0.25 micron technology with
2.5 V supply voltage for the core and 3.3 V for the I/O port pins to make them TTL compatible. Based
on the SDA 55xx microcontroller the MINTS software package was developed and provides dedicated
device drivers for many Micronas video & audio products and includes a full blown TV control SW for
the PEPER application chassis. The SDA 55xx is also supported with powerful design tools like
emulators from Hitex, Kleinhenz, iSystems, the Keil C51 Compiler and TEDIpro OSD development SW
by Tara Systems.
8. EEPROM 24C32
The Microchip Technology Inc. 24C32 is a 4Kx8 (32 Kbit) Electrically Erasable PROM. This device has
been developed for advanced, low power applications such as personal communications or data
acquisition. The 24C32 features an input cache for fast write loads with a capacity of eight 8-byte
pages, or 64 bytes. It also features a fixed 4K-bit block of ultra-high endurance memory for data that
changes frequently. The 24C32 is capable of both random and sequential reads up to the 32K
boundary. Functional address lines allow up to 8 - 24C32 devices on the same bus, for up to 256K bits
address space. Advanced CMOS technology makes this device ideal for low-power non-volatile code
and data applications.
9. CLASS AB STEREO HEADPHONE DRIVER TDA1308
The TDA1308 is an integrated class AB stereo headphone driver contained in a DIP8 plastic package.
The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital
audio applications.
10. SAW FILTERS
K9656M:
Standard:
• B/G
• D/K
• I
• L/L’
Features
• TV IF audio filter with two channels
• Channel 1 (L’) with one pass band for sound carriers at 40.40 MHz (L’) and 39.75 MHz (L’- NICAM)
• Channel 2 (B/G, D/K, L, I) with one pass band for sound carriers between 32.35 MHz and 33.40 MHz
Terminals
• Tinned CuFe alloy
Pin configuration
1 Input
2 Switching input
3 Chip carrier - ground
4 Output
5 Output
K3958M:
Standard:
• B/G
• D/K
• I
• L/L’

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TFT TV Service Manual11/04/2006
Features
• TV IF video filter with Nyquist slopes at 33.90 MHz and 38.90 MHz
• Constant group delay
Terminals
Tinned CuFe alloy
Pin configuration
1 Input
2 Input - ground
3 Chip carrier - ground
4 Output
5 Output
11. IC DESCRIPTIONS
TEA6415C
24LC02
4MX32 DDR SDRAM (128M)
TCET1102G OPTOCOUPLER
SVP-EX 52
TL431
24C32
74LVC14A
TEA6420D
CS4334
GAL16LV8
K6R4008V1
L6562D
LM1086
LM1117
LM317T
LM809
MSP3410G
M29W040B
MC33202
PCF8574
PI5V330
SDA5550
SG3525
SII9993
NCP1014
SN74CB3Q3305
ST24LC21
LM2576
MC34063
TDA1308
TDA9886T
TPA3002D2
µPA672T
VPC3230D

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TFT TV Service Manual11/04/2006
11.1. TEA6415C
11.1.1. General Description
The main function of the IC is to switch 8 video input sources on 6 outputs. Each output can be
switched on only one of each input. On each input an alignment of the lowest level of the signal is made
(bottom of synch. top for CVBS or black level for RGB signals). Each nominal gain between any input
and output is 6.5dB. For D2MAC or Chroma signal the alignment is switched off by forcing, with an
external resistor bridge, 5 VDC on the input. Each input can be used as a normal input or as a MAC or
Chroma input (with external resistor bridge). All the switching possibilities are changed through the
BUS. Driving 75load needs an external transistor. It is possible to have the same input connected to
several outputs. The starting configuration upon power on (power supply: 0 to 10V) is undetermined. In
this case, 6 words of 16 bits are necessary to determine one configuration. In other case, 1 word of 16
bits is necessary to determine one configuration.
11.1.2. Features
• 20MHz Bandwidth
• Cascadable with another TEA6415C (Internal address can be changed by pin 7 voltage)
• 8 Inputs (CVBS, RGB, MAC, CHROMA,...)
• 6 Outputs
• Possibility of MAC or chroma signal for each input by switching-off the clamp with an external resistor
bridge
• Bus controlled
• 6.5dB gain between any input and output
• 55dB crosstalk at 5mHz
• Fully ESD protected
11.1.3. Pinning
1. Input : Max : 2Vpp, Input Current: 1mA, Max: 3mA
2. Data : Low level : -0.3V Max: 1.5V,
High level : 3.0V Max : Vcc+0.5V
3. Input : Max : 2Vpp, Input Current: 1mA, Max : 3mA
4. Clock : Low level : -0.3V Max: 1.5V,
High level : 3.0V Max : Vcc+0.5V
5. Input : Max : 2Vpp, Input Current: 1mA, Max: 3mA
6. Input : Max : 2Vpp, Input Current: 1mA, Max: 3mA
7. Prog
8. Input : Max : 2Vpp, Input Current: 1mA, Max: 3mA
9. Vcc : 12V
10. Input : Max : 2Vpp, Input Current: 1mA, Max: 3mA
11. Input : Max : 2Vpp, Input Current: 1mA, Max: 3mA
12. Ground
13. Output : 5.5Vpp, Min : 4.5Vpp
14. Output : 5.5Vpp, Min : 4.5Vpp
15. Output : 5.5Vpp, Min : 4.5Vpp
16. Output : 5.5Vpp, Min : 4.5Vpp
17. Output : 5.5Vpp, Min : 4.5Vpp
18. Output : 5.5Vpp, Min : 4.5Vpp
19. Ground
20. Input : Max : 2Vpp, Input Current : 1mA, Max : 3mA

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11.2. 24LC02
11.2.1. Description
The Microchip Technology Inc. 24AA02/24LC02B (24XX02*) is a 2 Kbit Electrically Erasable PROM.
The device is organized as one block of 256 x 8-bit memory with a 2-wire serial interface. Low-voltage
design permits operation down to 1.8V, with standby and active currents of only 1µA and 1mA,
respectively. The 24XX02 also has a page write capability for up to 8 bytes of data.
11.2.2. Features
• Single supply with operation down to 1.8V
• Low-power CMOS technology
-1mA active current typical
-1µA standby current typical (I-temp)
• Organized as 1 block of 256 bytes (1 x 256 x 8)
• 2-wire serial interface bus, I2C™ compatible
• Schmitt Trigger inputs for noise suppression
• Output slope control to eliminate ground bounce
• 100 kHz (24AA02) and 400 kHz (24LC02B) compatibility
• Self-timed write cycle (including auto-erase)
• Page write buffer for up to 8 bytes
• 2ms typical write cycle time for page write
• Hardware write-protect for entire memory
• Can be operated as a serial ROM
• Factory programming (QTP) available
• ESD protection > 4,000V
• 1,000,000 erase/write cycles
• Data retention > 200 years
• 8-lead PDIP, SOIC, TSSOP and MSOP packages
• 5-lead SOT-23 package
• Pb-free finish available
• Available for extended temperature ranges:
-Industrial (I): -40°C to +85°C
-Automotive (E): -40°C to +125°C
11.2.3. Pinning