VESTEL 17MB18P-3 User manual

i
32” TFT TV Service Manual 06/03/2006
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. POWER .................................................................................................................................................... 2
8. MICROCONTROLLER SDA55XX............................................................................................................ 3
8.1. General Features............................................................................................................................... 3
8.2. External Crystal and Programmable Clock Speed............................................................................ 3
8.3. Microcontroller Features.................................................................................................................... 3
8.4. Memory.............................................................................................................................................. 3
8.5. Display Features................................................................................................................................ 3
8.6. ROM Characters................................................................................................................................ 3
8.7. Acquisition Features .......................................................................................................................... 4
8.8. Ports .................................................................................................................................................. 4
9. SERIAL ACCESS CMOS 16K (2048*8) EEPROM ST24C16 .................................................................. 4
10. CLASS AB STEREO HEADPHONE DRIVER TDA1308 .........................................................................4
11. SAW FILTERS.......................................................................................................................................... 4
12. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM ....................................................................... 5
12.1. LM1117.............................................................................................................................................. 5
12.1.1. General Description................................................................................................................. 5
12.1.2. Features .................................................................................................................................... 5
12.1.3. Applications.............................................................................................................................. 5
12.1.4. Connection Diagrams.............................................................................................................. 5
12.2. LM2576.............................................................................................................................................. 6
12.2.1. General Description................................................................................................................. 6
12.2.2. Features .................................................................................................................................... 6
12.2.3. Pin description ......................................................................................................................... 6
12.3. LM317T ............................................................................................................................................. 7
12.3.1. Description................................................................................................................................7
12.3.2. Features .................................................................................................................................... 7
12.4. ST24LC21 ......................................................................................................................................... 8
12.4.1. Description................................................................................................................................8
12.4.2. Features .................................................................................................................................... 8
12.4.3. Pin connections........................................................................................................................ 8
12.5. TEA5114A ......................................................................................................................................... 9
12.5.1. General description ................................................................................................................. 9
12.5.2. Features .................................................................................................................................... 9
12.5.3. Pin Connections....................................................................................................................... 9
12.6. TEA6415.......................................................................................................................................... 10
12.6.1. General description ............................................................................................................... 10
12.6.2. Features .................................................................................................................................. 10
12.6.3. Pinning.................................................................................................................................... 10
12.7. VPC3230D....................................................................................................................................... 11
12.7.1. General Description............................................................................................................... 11
12.7.2. Pin Connections and Short Descriptions............................................................................ 11
12.8. SDA55XX (SDA5550)...................................................................................................................... 13
12.8.1. General description ............................................................................................................... 13
12.9. TPA3003D2 ..................................................................................................................................... 14
12.9.1. General Description............................................................................................................... 14
12.9.2. Features .................................................................................................................................. 14
12.9.3. Pin Connection....................................................................................................................... 14
12.10. TDA9885/86 .................................................................................................................................... 15
12.10.1. General description ............................................................................................................... 15
12.10.2. Features .................................................................................................................................. 15
12.10.3. Pinning.................................................................................................................................... 15

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32” TFT TV Service Manual 06/03/2006
12.11. TDA1308 ......................................................................................................................................... 16
12.11.1. General Description............................................................................................................... 16
12.11.2. Features .................................................................................................................................. 16
12.11.3. Pinning.................................................................................................................................... 16
12.12. PI5V330........................................................................................................................................... 17
12.12.1. General description ............................................................................................................... 17
12.12.2. Features .................................................................................................................................. 17
12.12.3. Pin Descriptions..................................................................................................................... 17
12.13. GM6015........................................................................................................................................... 18
12.13.1. General description ............................................................................................................... 18
12.13.2. Features .................................................................................................................................. 18
12.14. AD9883A ......................................................................................................................................... 19
12.14.1. General description ............................................................................................................... 19
12.14.2. Features .................................................................................................................................. 19
12.14.3. Pin Descriptions..................................................................................................................... 19
12.15. MC141585 ....................................................................................................................................... 22
12.15.1. General description ............................................................................................................... 22
12.15.2. Features .................................................................................................................................. 22
12.15.3. Pin Description....................................................................................................................... 22
12.16. MC34063 ......................................................................................................................................... 24
12.16.1. Description.............................................................................................................................. 24
12.16.2. Features .................................................................................................................................. 24
12.16.3. Pin connections...................................................................................................................... 24
12.17. MSP34X0G (MSP3410G) ............................................................................................................... 25
12.17.1. Introduction ............................................................................................................................ 25
12.17.2. Features .................................................................................................................................. 25
12.17.3. Pin connections...................................................................................................................... 26
12.18. DS90C385 ....................................................................................................................................... 28
12.18.1. General Description............................................................................................................... 28
12.18.2. Features .................................................................................................................................. 28
12.18.3. Pinning.................................................................................................................................... 28
12.19. NDS8947 ......................................................................................................................................... 29
12.19.1. General Description............................................................................................................... 29
12.19.2. Features .................................................................................................................................. 29
13. SERVICE MENU SETTINGS ................................................................................................................. 30
13.1. ADJUST MENU SETTINGS............................................................................................................30
13.2. OPTIONS MENU SETTINGS..........................................................................................................32
13.3. APS WSS TEST MENU .................................................................................................................. 37
14. BLOCK DIAGRAM.................................................................................................................................. 38
15. CIRCUIT DIAGRAMS............................................................................................................................. 39

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32” TFT TV Service Manual 06/03/2006
1. INTRODUCTION
32” 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’s with all of them supporting full SCART features including RGB input
1 AV input. (CVBS+ Stereo Audio)
1 SVHS iput
1 Stereo Headphone output
1 D-Sub 15 PC input
1 DVI input (Optional)
1 Audio line out
1 Stereo audio input for PC/DVI
2. TUNER
As the thickness of the TV set has a limit, a horizontal mounted tuner is used in the product, which is
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 the Tuner 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. Compact size
6. 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 demodulator for positive and negative modulation, including sound AM and FM processing.
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 acquisition help, Audio
amplifier and mute time constant, I²C-bus transceivers and MAD (module address), Internal voltage stabilizer.

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32” TFT TV Service Manual 06/03/2006
4. MULTI STANDARD SOUND PROCESSOR
The MSP34x0G 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 MSP 34x1G 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 TPA3002D2 is a 9-W (per channel) efficient, Class-D audio amplifier for driving bridged-tied stereo
speakers. The TPA3002D2 can drive stereo speakersas low as 8 . The high efficiency of the TPA3002D2
eliminates the need for external heatsinks when playing music.
7. POWER
The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient
design of a step–down switching regulator (buck converter). All circuits of this series are capable of driving
a 3.0A load with excellent line and load regulation. Two different versions (one having a fixed output
voltage of 3.3 V, and one with 5.0 V) of this IC are used in the regulator board.