Toshiba 17WL46, 23WL46 Schematic

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TOSHIBA

SERVICE MANUAL

COLOUR TELEVISION

17WL46/23WL46

PRINTED IN UK. 2003 C

TABLE OF CONTENTS

INTRODUCTION......................................................................................................................................1

2. TUNER......................................................................................................................................................1

3. IF PART (TDA988X).................................................................................................................................1

4. MULTI STANDARD SOUND PROCESSOR............................................................................................1

5. AUDIO AMPLIFIER STAGE WITH TPA3003D2......................................................................................2

6. POWER....................................................................................................................................................2

7. MICROCONTROLLER SDA55XX............................................................................................................2

7.1. General Features...............................................................................................................................2

7.2. External Crystal and Programmable Clock Speed............................................................................2

7.3. Microcontroller Features....................................................................................................................2

7.4. Memory..............................................................................................................................................2

7.5. Display Features................................................................................................................................2

7.6. ROM Characters................................................................................................................................3

7.7. Acquisition Features..........................................................................................................................3

7.8. Ports ..................................................................................................................................................3

8. SERIAL ACCESS CMOS 16K (2048*8) EEPROM ST24C16..................................................................3

9. CLASS AB STEREO HEADPHONE DRIVER TDA1308 .........................................................................3

10. SAW FILTERS..........................................................................................................................................3

11. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM .......................................................................4

11.1. LM1117..............................................................................................................................................4

11.1.1. General Description.................................................................................................................4

11.1.2. Features ....................................................................................................................................4

11.1.3. Applications..............................................................................................................................4

11.1.4. Connection Diagrams..............................................................................................................4

11.2. LM2576..............................................................................................................................................5

11.2.1. General Description.................................................................................................................5

11.2.2. Features ....................................................................................................................................5

11.2.3. Pin description .........................................................................................................................5

11.3. LM317T .............................................................................................................................................6

11.3.1. Description................................................................................................................................6

11.3.2. Features ....................................................................................................................................6

11.4. ST24LC21 .........................................................................................................................................7

11.4.1. Description................................................................................................................................7

11.4.2. Features ....................................................................................................................................7

11.4.3. Pin connections........................................................................................................................7

11.5. TEA5114A.........................................................................................................................................8

11.5.1. General description .................................................................................................................8

11.5.2. Features ....................................................................................................................................8

11.5.3. Pin Connections.......................................................................................................................8

11.6. TEA6415............................................................................................................................................9

11.6.1. General description .................................................................................................................9

11.6.2. Features ....................................................................................................................................9

11.6.3. Pinning......................................................................................................................................9

11.7. VPC3230D.......................................................................................................................................10

11.7.1. General Description...............................................................................................................10

11.7.2. Pin Connections and Short Descriptions............................................................................10

11.8. SDA55XX (SDA5550)......................................................................................................................12

11.8.1. General description ...............................................................................................................12

11.9. TPA3003D2.....................................................................................................................................13

11.9.1. General Description...............................................................................................................13

11.9.2. Features ..................................................................................................................................13

11.9.3. Pinning....................................................................................................................................13

11.10. TDA9885/86 ....................................................................................................................................15

11.10.1. General description ...............................................................................................................15

11.10.2. Features ..................................................................................................................................15

11.10.3. Pinning....................................................................................................................................15

11.11. TDA1308 .........................................................................................................................................16

17” TFT TV Service Manual 21/09/2004

11.11.1.

11.11.2. Features ..................................................................................................................................16

11.11.3. Pinning....................................................................................................................................16

11.12. PI5V330...........................................................................................................................................17

11.12.1. General description ...............................................................................................................17

11.12.2. Features ..................................................................................................................................17

11.12.3. Pin Descriptions.....................................................................................................................17

11.13. GM6015...........................................................................................................................................18

11.13.1. General description ...............................................................................................................18

11.13.2. Features ..................................................................................................................................18

11.14. AD9883A.........................................................................................................................................19

11.14.1. General description ...............................................................................................................19

11.14.2. Features ..................................................................................................................................19

11.14.3. Pin Descriptions.....................................................................................................................19

11.15. MC141585.......................................................................................................................................22

11.15.1. General description ...............................................................................................................22

11.15.2. Features ..................................................................................................................................22

11.15.3. Pin Description.......................................................................................................................22

11.16. MC34063.........................................................................................................................................24

11.16.1. Description..............................................................................................................................24

11.16.2. Features ..................................................................................................................................24

11.16.3. Pin connections......................................................................................................................24

11.17. MSP34X0G......................................................................................................................................25

11.17.1. Introduction ............................................................................................................................25

11.17.2. Features ..................................................................................................................................25

11.17.3. Pin connections......................................................................................................................26

11.18. DS90C385.......................................................................................................................................28

11.18.1. General Description...............................................................................................................28

11.18.2. Features ..................................................................................................................................28

11.18.3. Pinning....................................................................................................................................28

11.19. NDS8947.........................................................................................................................................29

11.19.1. General Description...............................................................................................................29

11.19.2. Features ..................................................................................................................................29

12. SERVICE MENU SETTINGS.................................................................................................................30

12.1. ADJUST MENU SETTINGS............................................................................................................30

12.2. OPTIONS MENU SETTINGS..........................................................................................................31

12.3. APS WSS TEST MENU ..................................................................................................................36

13. BLOCK DIAGRAM..................................................................................................................................37

14. CIRCUIT DIAGRAMS.............................................................................................................................38

General Description...............................................................................................................16

17” TFT TV Service Manual 21/09/2004

1. INTRODUCTION

17” TFT-LCD TV is a Progressive TV control system based on the µ-controller SDA555X, with built-in de- interlacer and scaler.

TFT TV is a progressive scan flicker free colour television with PC input, driving an WXGA(1280*768) panel with 16:9 aspect ratio. The chassis 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´. Sound system output is supplying 2x3W (10%THD) speakers. The chassis is equipped with two full SCART’s, one back-AV, one SVHS, one D-Sub 15 (PC) input, one PC stereo audio input and one line out (left and right) and one HP outputs.

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 I

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 I

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

C bus (PLL). Below you will find info on the Tuner in use.

C-bus

3. IF PART (TDA988X)

The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal PLL. 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 proces sing. Both devices can be used for TV, VTR, PC and set-top box applications.

4. MULTI STANDARD SOUND PROCESSOR

17” TFT TV Service Manual 21/09/2004

5. AUDIO AMPLIFIER STAGE WITH TPA3003D2

The TPA3003D2 is a 3-W (per channel) efficient, Class-D audio amplifier for driving bridged-tied stereo speakers. The TPA3003D2 can drive stereo speakers as low as 8 Ω. The high efficiency of the TPA3003D2 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.

6. POWER

7. MICROCONTROLLER SDA55XX

7.1. General Features

• Feature selection via special function register

• Simultaneous reception of TTX, VPS, PDC, and WSS (line 23)

• Supply Voltage 2.5 and 3.3 V

• ROM version is used.

7.2. External Crystal and Pro grammable Clock Speed

• Single external 6MHz crystal, all necessary clocks are generated internally

• CPU clock speed selectable via special function registers.

• Normal Mode 33.33 MHz CPU clock, Power Save mode 8.33 MHz

7.3. Microcontroller Features

• 8bit 8051 instruction set compatible CPU.

• 33.33-MHz internal clock (max.)

• 0.360 ms (min.) instruction cycle

• Two 16-bit timers

• Watchdog timer

• Capture compare timer for infrared remote control decoding

• Pulse width modulation unit (2 channels 14 bit, 6 channels 8 bit)

• ADC (4 channels, 8 bit)

• UART (rxd, txd)

7.4. Memory

• Up to 128 Kilobyte on Chip Program ROM

• Eight 16-bit data pointer registers (DPTR)

• 256-bytes on-chip Processor Internal RAM (IRAM)

• 128bytes extended stack memory.

• Display RAM and TXT/VPS/PDC/WSS-Acquisition-Buffer directly accessible via MOVX

• UP to 16KByte on Chip Extended RAM (XRAM) consisting of;

- 1 Kilobyte on-chip ACQ-buffer-RAM (access via MOVX)

- 1 Kilobyte on-chip extended-RAM (XRAM, access via MOVX) for user software

- 3-Kilobyte Display Memory

7.5. Display Features

• ROM Character set supports all East and West European Languages in single device

• Mosaic Graphic Character Set

• Parallel Display Attributes

• Single/Double Width/Height of Characters

• Variable Flash Rate

• Programmable Screen Size (25 Rows x 33...64 Columns)

• Flexible Character Matrixes (HxV) 12 x 9...16

• Up to 256 Dynamical Redefinable Characters in standard mode; 1024 Dynamical Redefinable Characters in Enhanced Mode

• CLUT with up to 4096 colour combinations

• Up to 16 Colours per DRCS Character

• One out of 8 Colours for Foreground and Background Colours for 1-bit DRCS and ROM Characte rs

17” TFT TV Service Manual 21/09/2004

7.6. ROM Characters

• Shadowing

• Contrast Reduction

• Pixel by Pixel Shiftable Cursor With up to 4 Different Colours

• Support of Progressive Scan and 100 Hz.

• 3 X 4Bits RGB-DACs On-Chip

• Free Programmable Pixel Clock from 10 MHz to 32MHz

• Pixel Clock Independent from CPU Clock

• Multinorm H/V-Display Synchronisation in Master or Slave Mode

7.7. Acquisition Features

• Multistandard Digital Data Slicer

• Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+)

• Four Different Framing Codes Available

• Data Caption only limited by available Memory

• Programmable VBI-buffer

• Full Channel Data Slicing Supported

• Fully Digital Signal Processing

• Noise Measurement and Controlled Noise Compensation

• Attenuation Measurement and Compensation

• Group Delay Measurement and Compensation

• Exact Decoding of Echo Disturbed Signals

7.8. Ports

• One 8-bit I/O-port with open drain output and optional I 2 C Bus emulation support (Port0)

• Two 8-bit multifunction I/O-ports (Port1, Port3)

• One 4-bit port working as digital or analogue inputs for the ADC (Port2)

• One 2-bit I/O port with secondary function (P4.2, 4.3, 4.7)

• One 4-bit I/O-port with secondary function (P4.0, 4.1, 4.4) (Not available in P-SDIP 52)

8. SERIAL ACCESS CMOS 16K (2048*8) EEPROM ST24C16

The ST24C16 is a 16Kbit electrically erasable programmable memory (EEPROM), organised as 8 blocks of 256*8 bits. The memory is compatible with the I²C standard, two wire serial interface, which uses a bidirectional data bus and serial clock. The memory carries a built-in 4 bit, unique device identification code (1010) corresponding to the I²C bus definition. This is used together with 1 chip enable input (E) so that up to 2*8K devices may be attached to the I²C bus and selected individually.

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

K3953M is an IF Filter for Video Applications. The package is SIP5K. Supported standards are B/G, D/K, I, L/L’. K9656M is an IF Filter for Audio Applications. The package is SIP5K. Supported standards are B/G, D/K, I, L/L’.

17” TFT TV Service Manual 21/09/2004

11. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM

LM1117 TDA9885/86 LM2576 TDA1308T LM317T PI5V330 ST24LC21 GM6015 TEA5114A AD9883A TEA6415 MC141585 VPC3230D MC34063 SDA55XX MSP3400G TPA3003D2 DS90C385 NDS8947

11.1. LM1117

11.1.1. General Description

The LM1117 is a series of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current. It has the same pin-out as National Semiconductor’s industry standard LM317. The LM1117 is available in an adjustable version, which can set the output voltage from 1.25V to 13.8V with only two external resistors. In addition, it is also available in five fixed voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V. The LM1117 offers current limiting and thermal shutdown. Its circuit includes a zener trimmed bandgap reference to as-sure output voltage accuracy to within ±1%. The LM1117 series is available in SOT-223, TO-220, and TO-252 D-PAK packages. A minimum of 10µF tantalum capacitor is required at the output to improve the transient response and stability.

11.1.2. Features

• Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable Versions

• Space Saving SOT-223 Package

• Current Limiting and Thermal Protection

• Output Current 800mA

• Line Regulation 0.2% (Max)

• Load Regulation 0.4% (Max)

• Temperature Range — LM1117 0°C to 125°C

— LM1117I -40°C to 125°C —

11.1.3. Applications

• 2.85V Model for SCSI-2 Active Termination

• Post Regulator for Switching DC/DC Converter

• High Efficiency Linear Regulators

• Battery Charger

• Battery Powered Instrumentation

11.1.4. Connection Diagrams

17” TFT TV Service Manual 21/09/2004

11.2. LM2576

11.2.1. General Description

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 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version. These regulators were designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2576 are offered by several different inductor manufacturers. Since the LM2576 converter is a switch–mode power supply, its efficiency is significantly higher in comparison with popular three–terminal linear regulators, especially with higher input voltages. In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced dramatically. A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers. This feature greatly simplifies the design of switch–mode power supplies. The LM2576 features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency (±2% over 0°C to 125°C). External shutdown is included, featuring 80 mA (typical) standby current. The output switch includes cycle–by–cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

11.2.2. Features

• 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions

• Adjustable Version Output Voltage Range, 1.23 to 37 V ±4% Maximum Over Line and Load Conditions

• Guaranteed 3.0 A Output Current

• Wide Input Voltage Range

• Requires Only 4 External Components

• 52 kHz Fixed Frequency Internal Oscillator

• TTL Shutdown Capability, Low Power Standby Mode

• High Efficiency

• Uses Readily Available Standard Inductors

• Thermal Shutdown and Current Limit Protection

• Moisture Sensitivity Level (MSL) Equals 1

11.2.3. Pin description

17” TFT TV Service Manual 21/09/2004

11.3. LM317T

11.3.1. Description

The LM317T is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 amps over an output range of 1.25 to 37 volts. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow–out proof. The LM317 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317 can be used as a precision current regulator.

11.3.2. Features

• Output Current in Excess of 1.5 A

• Output Adjustable between 1.2 V and 37 V

• Internal Thermal Overload Protection

• Internal Short Circuit Current Limiting Constant with Temperature

• Output Transistor Safe–Area Compensation

• Floating Operation for High Voltage Applications

• Available in Surface Mount D

PAK, and Standard 3–Lead Transistor Package

• Eliminates Stocking many Fixed Voltages

17” TFT TV Service Manual 21/09/2004

11.4. ST24LC21

11.4.1. Description

The ST24LC21 is a 1K bit electrically erasable programmable memory (EEPROM), organized by 8 bits. This device can operate in two modes: Transmit Only mode and I

C bidirectional mode. When powered, the device is in Transmit Only mode with EEPROM data clocked out from the rising edge of the signal applied on VCLK. The device will switch to the I applied on SCL pin. The ST24LC21 can not switch from the I

C bidirectional mode upon the falling edge of the signal

C bidirectional mode to the Transmit Only mode (except when the power supply is removed). The device operates with a power supply value as low as 2.5V. Both Plastic Dual-in-Line and Plastic Small Outline packages are available.

11.4.2. Features

• 1 million Erase/Write cycles

• 40 years data retention

• 2.5V to 5.5V single supply voltage

• 400k Hz compatibility over the full range of supply voltage

• Two wire serial interface I

C bus compatible

• Page Write (Up To 8 Bytes)

• Byte, random and sequential read modes

• Self timed programming cycle

• Automatic address incrementing

• Enhanced ESD/Latch up

• Performances

11.4.3. Pin connections

DIP Pin connections CO Pin connections NC: Not connected

Signal names

SDA Serial data Address Input/Output SCL Serial Clock (I2C mode) Vcc Supply voltage Vss Ground VCLK Clock transmit only mode

17” TFT TV Service Manual 21/09/2004

11.5. TEA5114A

11.5.1. General description

This integrated circuit provides RGB switching allowing connections between peri TV plug, internal RGB generator and video processor in a TV set. The input signal black level is tied to the same reference voltage on each input in order to have no differential voltage when switching two RGB generators. An AC output signal higher than 2 Vpp makes gain going slowly down to 0dBto protect the TV set video amplifier from saturation. Fast blanking output is a logical OR between FB1 (Pin 8) and FB2 (Pin 10).

11.5.2. Features

• 25MHz Bandwidth

• Crosstalk : 55dB

• Short circuit to ground or V

CC protected

• Anti saturation gain changing

• Video switching

11.5.3. Pin Connections

17” TFT TV Service Manual 21/09/2004

11.6. TEA6415

11.6.1. 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 V

DC 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 75Ω 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.

11.6.2. 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

11.6.3. 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

17” TFT TV Service Manual 21/09/2004

11.7. VPC3230D

11.7.1. General Description

The VPC 323xD is a high-quality, single-chip video front-end, which is targeted for 4:3 and 16:9, 50/60-Hz and 100/120 Hz TV sets. It can be combined with other members of the DIGIT3000 IC family (such as DDP 331x) and/or it can be used with 3rd-party products. The main features of the VPC 323xD are

• high-performance adaptive 4H comb filter Y/C separator with adjustable vertical peaking

• multi-standard colour decoder PAL/NTSC/SECAM including all substandards

• four CVBS, one S-VHS input, one CVBS output

• two RGB/YC

r Cb component inputs, one Fast Blank (FB) input

• integrated high-quality A/D converters and associated clamp and AGC circuits

• multi-standard sync processing

• linear horizontal scaling (0.25 ... 4), as well as non-linear horizontal scaling ‘Panorama-vision’

• PAL+ preprocessing

• line-locked clock, data and sync, or 656-output interface

• peaking, contrast, brightness, color saturation and tint for RGB/ YC

r C b and CVBS/ S-VHS

• high-quality soft mixer controlled by Fast Blank

• PIP processing for four picture sizes (1/4, 1/9, 1/16 or 1/36 of normal size) with 8-bit resolution

• 15 predefined PIP display configurations and expert mode (fully programmable)

• control interface for external field memory

• I

C-bus interface

• one 20.25-MHz crystal, few external components

• 80-pin PQFP package

11.7.2. Pin Connections and Short Descriptions

NC = not connected LV = if not used, leave vacant X = obligatory; connect as described in circuit diagram SUPPLYA = 4.75...5.25 V, SUPPLYD = 3.15...3.45 V

Pin No. PQFP 80-pin

1 B1/CB1IN IN VREF Blue1/Cb1 Analog Component Input 2 G1/Y1IN IN VREF Green1/Y1 Analog Component Input 3 R1/CR1IN IN VREF Read1/Cr1 Analog Component Input 4 B2/CB2IN IN VREF Blue2/Cb2 Analog Component Input 5 G2/Y2IN IN VREF Green2/Y2 Analog Component Input 6 R2/CR2IN IN VREF Read2/Cr2 Analog Component Input 7 ASGF X Analog Shield GNDF 8 FFRSTWIN IN LV or GNDD FIFO Reset Write Input 9 V 10 V 11 GNDD SUPPLYD X Ground, Digital Circuitry 12 GND 13 SCL IN/OUT X I2C Bus Clock 14 SDA IN/OUT X I2C Bus Data 15 RESQ IN X Reset Input, Active Low 16 TEST IN GNDD Test Pin, connect to GNDD 17 VGAV IN GNDD VGAV Input 18 YCOEQ IN GNDD Y/C Output Enable Input, Active Low 19 FFIE OUT LV FIFO Input Enable 20 FFWE OUT LV FIFO Write Enable 21 FFRSTW OUT LV FIFO Reset Write/Read 22 FFRE OUT LV FIFO Read Enable 23 FFOE OUT LV FIFO Output Enable 24 CLK20 IN/OUT LV Main Clock output 20.25 MHz 25 GNDPA OUT X Pad Decouplin g Circuitry GND 26 V 27 LLC2 OUT LV Double Clock Output 28 LLC1 IN/OUT LV Clock Output 29 V

Pin Name Type Connection

(if not used)

OUT X Digital Decoupling Circuitry Supply Voltage

SUPCAP

SUPPLYD X Supply Voltage, Digital Circuitry

SUPD

OUT X Digital Decoupling Circuitry GND

CAP

OUT X Pad Decouplin g Circuitry Supply Voltage

SUPPA

SUPPLYD X Supply Voltage, LLC Circuitry

SUPLLC

Short Description

17” TFT TV Service Manual 21/09/2004

30 GND

SUPPLYD X Ground, LLC Circuitry

LLC

31 Y7 OUT GNDY Picture Bus Luma (MSB) 32 Y6 OUT GNDY Picture Bus Luma 33 Y5 OUT GNDY Picture Bus Luma 34 Y4 OUT GNDY Picture Bus Luma 35 GNDY SUPPLYD X Ground, Luma Output Circuitry 36 V

SUPPLYD X Supply Voltage, Luma Output Circuitry

SUPY

37 Y3 OUT GNDY Picture Bus Luma 38 Y2 OUT GNDY Picture Bus Luma 39 Y1 OUT GNDY Picture Bus Luma 40 Y0 OUT GNDY Picture Bus Luma (LSB) 41 C7 OUT GNDC Picture Bus Chroma (MSB) 42 C6 OUT GNDC Picture Bus Chroma 43 C5 OUT GNDC Picture Bus Chroma 44 C4 OUT GNDC Picture Bus Chroma 45 V

SUPPLYD X Supply Voltage, Chroma Output Circuitry

SUPC

46 GNDC SUPPLYD X Ground, Chroma Output Circuitry 47 C3 OUT GNDC Picture Bus Chroma 48 C2 OUT GNDC Picture Bus Chroma 49 C1 OUT GNDC Picture Bus Chroma 50 C0 OUT GNDC Picture Bus Chroma (LSB) 51 GNDSY SUPPLYD X Ground Sync Pad Circuitry 52 V

SUPPLYD X Supply Voltage, Sync Pad Circuitry

SUPSY

53 INTLC OUT LV Interlace Output 54 AVO OUT LV Active Video Output 55 FSY/HC/HSYA OUT LV Front Sync/ Horizontal Clamp Pulse/Front-End

Horizontal Sync Output 56 MSY/HS IN/OUT LV Main Sync/Horizontal Sync Pulse 57 VS OUT LV Vertical Sync Pulse 58 FPDAT/VSYA IN/OUT LV Front End/Back-End Data/Front-End Vertical Sync

Output 59 V

SUPPLYA X Standby Supply Voltage

STBYY

60 CLK5 OUT LV CCU 5 MHz Clock Output 61 NC - LV or GNDD Not Connected 62 XTAL1 IN X Analog Crystal Input 63 XTAL2 OUT X Analog Crystal Output 64 ASGF X Analog Shield GNDF 65 GNDF SUPPLYA X Ground, Analog Front-End 66 VRT OUTPUT X Reference Voltage Top, Analog 67 I2CSEL IN X I2C Bus Address Select 68 ISGND SUPPLYA X Signal Ground for Analog Input, connect to GNDF 69 V

SUPPLYA X Supply Voltage, Analog Front-End

SUPF

70 VOUT OUT LV Analog Video Output 71 CIN IN LV Chroma/Analog Video 5 Input 72 VIN1 IN VRT Video 1 Analog Input 73 VIN2 IN VRT Video 2 Analog Input 74 VIN3 IN VRT Video 3 Analog Input 75 VIN4 IN VRT Video 4 Analog Input 76 V

SUPPLYA X Supply Voltage, Analog Component Inputs Fr ont-End

SUPAI

77 GNDAI SUPPLYA X Ground, Analog Component Inputs Front-End 78 VREF OUTPUT X Reference Voltage Top, Analog Component Inputs

Front-End 79 FB1IN IN VREF Fast Blank Input 80 AISGND SUPPLYA X Signal Gro und for Anal og Co mponent Inp ut s, conn ect

to GND

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11.8. SDA55XX (SDA5550)

11.8.1. General description

The SDA55XX is a single chip teletext decoder for decoding World System Teletext data as well as Video Programming System (VPS), Program Delivery Control (PDC), and Wide Screen Signalling (WSS) data used for PAL plus transmissions (Line 23). The device also supports Closed caption acquisition and decoding. The device provides an integrated general-purpose, fully 8051-compatible Microcontroller with television specific hardware features. Microcontroller has been enhanced to prov ide powerful features such as memory banking, data pointers, and additional interrupts etc. The on-chip display unit for displaying Level 1.5 teletext data can also be used for customer defined on screen displays. Internal XRAM consists of up to16 Kbytes. Device has an internal ROM of up to 128 KBytes. ROMless versions can access up to 1 MByte of external RAM and ROM. The SDA 55XX supports a wide range of standards including PAL, NTSC and contains a digital slicer for VPS, WSS, PDC, TTX and Closed Caption, an accelerating acquisition hardware module, a display generator for Level 1.5 TTX data and powerful On screen Display capabilities based on parallel attributes, and Pixel oriented characters (DRCS). The 8-bit Microcontroller runs at 360 ns. cycle time (min.). Controller with dedicated hardware does most of the internal TTX acquisition processing, transfers data to/from external memory interface and receives/ transmits data via I

C-firmware user-interface. The slicer combined with dedicated hardware stores TTX data in a VBI buffer of 1 Kilobyte. The Microcontroller firmware performs all the acquisition tasks (hamming and parity-checks, page search and evaluation of header control bits) once per field. Additionally, the firmware can provide high-end Teletext features like Packet-26-handling, FLOF, TOP and list-pages. The interface to user software is optimized for minimal overhead. SDA 55XX is realized in 0.25 micron technology with 2.5 V supply voltage and 3.3 V I/O (TTL compatible). The software and hardware development environment (TEAM) is available to simplify and speed up the development of the software and On Screen Display. TEAM stands for TVT Expert Application Maker. It improves the TV controller software quality in following aspects: – Shorter time to market – Re-usability – Target independent development – Verification and validation before targeting – General test concept – Graphical interface design requiring minimum programming and controller know how. – Modular and open tool chain, configurable by customer.

17” TFT TV Service Manual 21/09/2004

11.9. TPA3003D2

11.9.1. General Description

11.9.2. Features

•

3-W/Ch Into an 8-Ω Load From 12-V Supply

• Efficient, Class-D Operation Eliminates Heatsinks and Reduces Power Supply Requirements

• 32-Step DC Volume Control From −40 dB to 36 dB

• Third Generation Modulation Techniques − Replaces Large LC Filter With Small Low-Cost Ferrite Bead Filter

• Thermal and Short-Circuit Protection

11.9.3. Pinning

TERMINAL

NAME NO.

AGND 9, 10, 26 − Analog ground for digital/analog cells in core AVCC 33

AVDD 29 AVDDREF 7

BSLN 13 I/O Bootstrap I/O for left channel, negative high-side FET BSLP 24 I/O Bootstrap I/O for left channel, positive high-side FET BSRN 48 I/O Bootstrap I/O for right channel, negative high-side FET BSRP 37 I/O Bootstrap I/O for right channel, positive high-side FET COSC 28 I/O I/O for charge/discharging currents onto capacitor for ramp generator triangle wave biased at V2P5

FADE 30 I Input for controlling volume ramp rate when cycling SD or during power-up. A logic low on this pin

LINN 6 I Negative differential audio input for left channel LINP 5 I Positive differential audio input for left channel LOUTN 16, 17 O Class-D 1/2-H-bridge negative output for left channel LOUTP 20, 21 O Class-D 1/2-H-bridge positive output for left channel MUTE 34 I A logic high on this pin disables the outputs. A low on this pin enables the outputs.

NC 31, 32, 35 PGNDL 18, 19 − Power ground for left channel H-bridge

PGNDR 42, 43 − Power ground for right channel H-bridge PVCCL 14, 15 − Power supply for left channel H-bridge (tied to pins 22 and 23 internally), not connected to PVCCR or

PVCCL 22, 23 − Power supply for left channel H-bridge (tied to pins 14 and 15 internally), not connected to PVCCR or

PVCCR 38,39 − Power supply for right channel H-bridge (tied to pins 46 and 47 internally), not connected to PVCCL

PVCCR 46, 47 − Power supply for right channel H-bridge (tied to pins 38 and 39 internally), not connected to PVCCL

REFGND 12 −

RINP 3 I Positive differential audio input for right channel RINN 2 I Negative differential audio input for right channel ROSC 27 I/O ROUTN 44, 45 O Class-D 1/2-H-bridge negative output for right channel ROUTP 40, 41 O Class-D 1/2-H-bridge positive output for right channel

SD 1 I VCLAMPL 25 − Internally generated voltage supply for left channel bootstrap capacitors. VCLAMPR 36 − Internally generated voltage supply for right channel bootstrap capacitors.

I/O DESCRIPTION

− High-voltage analog power supply (8.5 V to 14 V) O 5-V Regulated output O 5-V Reference output—provided for connection to adjacent VREF terminal.

places the amplifier in fade mode. A logic high on this pin allows a quick transition to the desired volume setting.

− Not internally connected

or AV

Ground for gain control circuitry. Connect to AGND. If using a DAC to control the volume, connect the DAC ground to this terminal.

Current setting resistor for ramp generator. Nominally equal to 1/8*V

Shutdown signal for IC (low = shutdown, high = operational). TTL logic levels with compliance to V

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VOLUME 11 I DC voltage that sets the gain of the amplifier. VREF 8 I Analog reference for gain control section.

V2P5 4 O

2.5-V Reference for analog cells, as well as reference for unused audio input when using singleended inputs.

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11.10. TDA9885/86

11.10.1. General description

The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal PLL. 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. Both devices can be used for TV, VTR, PC and set-top box applications.

11.10.2. Features

•

5 V supply voltage

• Gain controlled wide-band Vision Intermediate Frequency (VIF) amplifier (AC-coupled)

• Multistandard true synchronous demodulation with active carrier regeneration (very linear demodulation, good

intermodulation figures, reduced harmonics, excellent pulse response)

• Gated phase detector for L/L accent standard

• Fully integrated VIF Voltage Controlled Oscillator (VCO), alignment-free; frequencies switchable for all

negative and positive modulated standards via I

C-bus

• Digital acquisition help, VIF frequencies of 33.4, 33.9, 38.0, 38.9, 45.75 and 58.75 MHz

• 4 MHz reference frequency input [signal from Phase-Locked Loop (PLL) tuning system] or operating as crystal

oscillator

• VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector for negative

modulated signals and as a peak white detector for positive modulated signals

• Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit digital-to-analog conver ter; AFC bits

via I

C -bus readable

• TakeOver Point (TOP) adjustable via I

C-bus or alternatively with potentiometer

• Fully integrated sound carrier trap for 4.5, 5.5, 6.0 and 6.5 MHz, controlled by FM-PLL oscillator

• Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode (PLL controlled)

• SIF AGC for gain controlled SIF amplifier; single reference QSS mixer able to operate in high performance

single reference QSS mode and in intercarrier mode, switchable via I

C-bus

• AM demodulator without extra reference circuit

• Alignment-free selective FM-PLL demodulator with high linearity and low noise

• I

C-bus control for all functions

• I

C-bus transceiver with pin programmable Module Address (MAD).

11.10.3. Pinning

SYMBOL PIN DESCRIPTION

VIF1 1

VIF2 OP1 FMPLL DEEM AFD DGND AUD TOP SDA SCL SIOMA n.c. TAGC REF VAGC CVBS AGND VPLL

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

VP 20

AFC OP2 SIF1 SIF2

21 22 23 24

VIF differential input 1 VIF differential input 2 output 1 (open-collector) FM-PLL for loop filter de-emphasis output for capacitor AF decoupling input for capacitor digital ground audio output tuner AGC TakeOver Point (TOP) I2C-bus data input/output I2C-bus clock input sound intercarrier output and MAD select not connected tuner AGC output 4 MHz crystal or reference input VIF-AGC for capacitor; (Not connected for TDA9885) video output analog ground VIF-PLL for loop filter supply voltage (+5 V) AFC output output 2 (open-collector) SIF differential input 1 SIF differential input 2

17” TFT TV Service Manual 21/09/2004

11.11. TDA1308

11.11.1. General Description

The TDA1308 is an integrated class AB stereo headphone driver contained in an SO8 or a DIP8 plastic package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital audio applications.

11.11.2. Features

•

Wide temperature range

• No switch ON/OFF clicks

• Excellent power supply ripple rejection

• Low power consumption

• Short-circuit resistant

• High performance

• high signal-to-noise ratio

• High slew rate

• Low distortion

• Large output voltage swing.

11.11.3. Pinning

SYMBOL PIN DESCRIPTION PIN VALUE

OUTA 1 Output A (Voltage s wing) Min : 0.75V, Max : 4.25V INA(neg) 2 Inverting input A Vo(clip) : Min : 1400mVrms INA(pos) 3 Non-inverting input A 2.5V VSS 4 Negative supply 0V INB(pos) 5 Non-inverting input B 2.5V INB(neg) 6 Inverting input B Vo(clip) : Min : 1400mVrms OUTB 7 Output B (Voltage s wing) Min : 0.75V, Max : 4.25V VDD 8 Positive supply 5V, Min : 3.0V, Max : 7.0V

17” TFT TV Service Manual 21/09/2004

11.12. PI5V330

11.12.1. General description

Pericom Semiconductor’s PI5V series of mixed signal video circuits are produced in the Company’s advanced CMOS low-power technology, achieving industry leading performance. The PI5V330 is a true bidirectional Quad 2-channel multiplexer/demultiplexer that is recommended for both RGB and composite video switching applications. The VideoSwitch™ can be driven from a current output RAMDAC or voltage output composite video source. Low ON-resistance and wide bandwidth make it ideal for video and other applications. Also this device has exceptionally high current capability which is far greater than most analog switches offered today. A single 5V supply is all that is required for operation. The PI5V330 offers a high-performance, low-cost solution to switch between video sources. The application section describes the PI5V330 replacing the HC4053 multiplier and buffer/amplifier.

11.12.2. Features

• High-performance, low-cost solution to switch between video sources

• Wide bandwidth: 200 MHz

• Low ON-resistance: 3W

• Low crosstalk at 10 MHz: –58 dB

• Ultra-low quiescent power (0.1 µA typical)

• Single supply operation: +5.0V

• Fast switching: 10 ns

• High-current output: 100 mA

• Packages available: – 16-pin 300-mil wide plastic SOIC (S) – 16-pin 150-mil wide plastic SOIC (W) – 16-pin 150-mil wide plastic QSOP (Q)

11.12.3. Pin Descriptions

Pin Name Description

S1A, S2A S1

, S2B

, S2C

, S2D

Analog Video I/O

IN Select Input EN Enable DA, DB, D

, DD

Analog Video I/O

GND Ground VCC Power

17” TFT TV Service Manual 21/09/2004

11.13. GM6015

11.13.1. General description

The Genesis Microchip 6015RD1 LCD TV reference board is a complete display processor for LCD, PDP and LCOS based televisions. The reference board demonstrates the processing capabilities of the Genesis Microchip gm6015 television controller IC. The gm6015 IC is a full-featured, dual-channel video processor with Genesis industry leading Crystal Ciema Plus

video scan conversion. The 6015RD1 board inputs analog YPbPr/RGB, NTSC/PAL/SECAM CVBS/YC, UHF/VHF and outputs digital RGB to an XGA LCD panel. A convenient on-screen display system provides easy control of the board’s processing capabilities. The design kit is complete with hardware and software. Software includes G-Probe debug software, GWizard register calculator and G-TV application source code. The 6015RD1 is a related reference board that outputs analog YpbPr/RGB.

11.13.2. Features

•

Dual channel, gm6015 based LCD TV system

• Industry leading Crystal Cinema Plus video scan conversion

• Inputs:

i. Component analog

480/576I, 480/576P, 720P and 1080I HD

ii.

Dual NTSC/PAL/SECAM CVBS and YC

iii.

VGA, SVGA, XGA PC graphics

iv.

Separate, composite or sync on Y/G

vi. UHF/VHF RF (NTSC)

YPbPr/RGB

• Default output with XGA LCD interface PCB:

i. Component analog

YpbPr/RGB

• Other outputs:

ii. 8/16/20/24-bit 4:2:2/4:4:4 digital

480/576I, 480/576P, 720P and 1080I HD

iii.

VGA, SVGA, XGA PC graphics

iv.

Separate, composite or sync on Y/G

YCbCr/RGB

• On-screen display (OSD) user interface with automated self running demonstration

• Small form factor PCB

17” TFT TV Service Manual 21/09/2004

11.14. AD9883A

11.14.1. General description

The AD9883A is a complete 8-bit, 140 MSPS monolithic analog interface optimized for capturing RGB graphics signals from personal computers and workstations. Its 140 MSPS encode rate capability and full power analog bandwidth of 300 MHz supports resolutions up to SXGA (1280  1024 at 75 Hz). The AD9883A includes a 140 MHz triple ADC with internal 1.25 V reference, a PLL, and programmable gain, offset, and clamp control. The user provides only a 3.3 V power supply, analog input, and Hsync and COAST signals. Three-state CMOS outputs may be powered from 2.5 V to 3.3 V. The AD9883A’s on-chip PLL generates a pixel clock from the Hsync input. Pixel clock output frequencies range from 12 MHz to 140 MHz. PLL clock jitter is 500 ps p-p typical at 140 MSPS. When the COAST signal is presented, the PLL maintains its output frequency in the absence of Hsync. A sampling phase adjustment is provided. Data, Hsync, and clock output phase relationships are maintained. The AD9883A also offers full sync processing for composite sync and sync-on-green applications. A clamp signal is generated internally or may be provided by the user through the CLAMP input pin. This interface is fully programmable via a 2-wire serial interface. Fabricated in an advanced CMOS process, the AD9883A is provided in a space-saving 80-lead LQFP surface-mount plastic package and is specified over the 0C to 70C temperature range.

11.14.2. Features

• 140 MSPS Maximum Conversion Rate

• 300 MHz Analog Bandwidth

• 0.5 V to 1.0 V Analog Input Range

• 500 ps p-p PLL Clock Jitter at 110 MSPS

• 3.3 V Power Supply

• Full Sync Processing

• Sync Detect for “ Plugging ”

• Midscale Clamping

• Power-Down Mode

• Low Power:500 mW Typical

• 4:2:2 Output Format Mode

11.14.3. Pin Descriptions

Pin Name Function OUTPUTS

HSOUT

VSOUT

SOGOUT

SERIAL PORT (2-Wire)

SDA SCL A0

Horizontal Sync Output A reconstructed and phase-aligned version of the Hsync input. Both the polarity and duration of this output can be programmed via serial bus registers. By maintaining al ignment with DATACK and Data, data timing with respect to horizontal sync can always be determined.

Vertical Sync Output A reconstructed and phase-aligned version of the v ideo Vsync. The polari ty of this output can be controlled via a serial bus bit. The placement and duration in all modes is set by the graphics transmitter.

Sync-On-Green Slicer Output This pin outputs either the signal from the Sync-on-Green slicer comparator or a n unprocessed but delayed version of the Hsync input. (Note: Besides slicing off SOG, the output from this pin gets no other additional processing on the AD9883A. Vsync separation is performed via the sync separator.)

Serial Port Data I/O Serial Port Data Clock Serial Port Address Input 1 For a full description of the 2-wire serial register and how it works, refer to the 2Wire Serial Control Port section.

17” TFT TV Service Manual 21/09/2004

DATA OUTPUTS

RED GREEN BLUE

DATA CLOCK OUTPUTS

DATACK

Data Output, RED Channel Data Output, GREEN Channel Data Output, BLUE Channel The main data outputs. Bit 7 is the MSB. The delay from pixe l sampling time to output is fixed. When the sampling time is changed by adjusting the PHASE register, the output timing is shifted as well. The DATACK and HSOUT outputs are also moved, so the timing relationship among the signals is maintained.

Data Output Clock

This is the main clock output signal used to strobe the output data and HSOUT into external logic. It is produced by the internal clock generator and is synchronous with the internal pixel sampling clock. When the sampling time is changed by adjusting the PHASE register, the output timing is shifted as well. The Data, DATACK, and HSOUT outputs are all

moved, so the timing relationship among the signals is maintained.

INPUTS

RAIN GAIN BAIN

HSYNC

VSYNC

SOGIN

CLAMP

COAST

Analog Input for RED Channel Analog Input for GREEN Channel Analog Input for BLUE Channel High impedance inputs that accept the RED, GREEN, and BLUE chan nel graphics signals, respectively. (The three channels are identical, and can be used for any colors, but colors are assigned for convenient reference.) They accommodate input signals ranging from 0.5 V to 1.0 V full scale. Signals should be ac-coupled to these pins to support clamp operation.

Horizontal Sync Input This input receives a logic signal that establishes the horizontal timing reference and provides the frequency reference for pixel clock generation. The logic sense of this pin is controlled b y serial register 0Eh Bit 6 (Hsync Polarity). Only the leading edge of Hsync is active; the trailin g edge is ignored. When Hsync Polarity = 0, the falling edge of Hsync is used. When Hsync Polarity = 1, the rising edge is active. The input inclu des a Schmitt trigger for noise immunity, with a nominal input threshold of 1.5 V.

Vertical Sync Input This is the input for vertical sync.

Sync-on-Green Input This input is provided to assist with processing signals with embedded sync, typically on the GREEN channel. The pin is connected to a high speed comparator with an internally generated threshold. The threshold l evel can be programmed in 10 mV steps to any voltage between 10 mV and 33 0 mV above the negat ive peak of the input signal. The default voltage threshold is 150 mV . When connec ted to an ac-coupled graphics signal with embedded sync, it will produce a noninverting digital output on SOGOUT. (This is usually a composite sync signal, containing both vertical and horizontal sync information that must be separated before passing the horizontal sync signal to Hsync.) When not used, this input sh ould be left unconnected. For more details on this function and how it should be configured, refer to the Sync-on-Green section.

External Clamp Input This logic input may be used to define the time d uring which the input signal is clamped to ground. It should be exercised when the reference dc level is known to be present on the analog input channels, typically during the back porch of the graphics signal. The CLAMP pin is enabled by setting contr ol bit Clam p F unction to 1, (register 0FH, Bit 7, default is 0). When disabled, this pin is ignored and the clamp timing is determined int ernally by counting a delay and duration from the trailing edge of the Hsync input. The logic sense of this pin is controlled by Clamp Polarity register 0FH, Bit 6. When not used, this pin must be grounded and Clamp Function programmed to 0.

Clock Generator Coast Input (Optional) This input may be used to cause the pixel c lock generator to stop synchronizing with Hsync and continue producing a clock a t its current frequency and phase. This is useful when processing signals from sources that fail to produce horizontal sync

17” TFT TV Service Manual 21/09/2004

REF BYPASS

MIDSCV

FILT

POWER SUPPLY

VDD

GND

pulses during the vertical interval. The COAST signal is generally not required for PC-generated signals. The logic sense of this pin is controlled b y Coast Polarity (register 0FH, Bit 3). When not used, this pin may be grounded and Coast Polarity programmed to 1, or tied HIGH (to VD through a 10 k resistor) and Coast Polarit y programmed to 0. Coast Polarity defaults to 1 at power-up.

Internal Reference BYPASS Bypass for the internal 1.25 V band gap reference. It should be connected to ground through a 0.1 µF capacitor. The absolute accuracy of this reference is ±4%, and the temperature coefficient is ±50 ppm, which is adequate for most AD9883A applications. If higher accuracy is required, an external reference may be employed instead.

Midscale Voltage Reference BYPASS Bypass for the internal midscale voltage reference. It should be connected to ground through a 0.1 µF capacitor. The exact voltage varies with the gain setting of the BLUE channel.

External Filter Connection For proper operation, the pixel clock generator PLL requires an external filter. Connect the filter shown in Figure 6 to this pin. For optimal performance, minimize noise and parasitics on this node.

Main Power Supply These pins supply power to the main elements of the circuit. They should be as quiet and filtered as possible.

Digital Output Power Supply A large number of output pins (up to 25) switching at high speed (u p to 110 MHz) generate a lot of power supply transients (noise). These suppl y pins are identified separately from the VD pins so special c are can be taken t o minimize out put noise transferred into the sensitive analog circuitry. If the AD9883A is interfacing with lower voltage logic, VDD may be connected to a lower supply voltage (as low as

2.5 V) for compatibility. Clock Generator Power Supply

The most sensitive portion of the AD9883A is the clock generation circuitry. T hese pins provide power to the clock PLL and help the user design for optimal performance. The designer should provide “quiet,” noise-free power to these pins.

Ground The ground return for all circuitry on chip. It is recommended that the AD9883A be assembled on a single solid ground plane, with careful attention to ground current paths.

17” TFT TV Service Manual 21/09/2004

11.15. MC141585

11.15.1. General description

This is a high performance HCMOS device designed to interface with a micro controller unit to allow colored symbols or characters to be displayed onto a LCD monitor. Because of the large number of fonts, 512 fonts including 496 standard fonts and 16 multi-color fonts, LMOSD2-16 is suitable to be adopted for the multi-language monitor application especially. It minimizes the MCU’s burden through its built-in RAM. By storing a full screen of data and control information, this device has a capability to carry out ‘screenrefresh’ without any MCU supervision. Programmable hatch pattern generator is added for individual pixel inspection. Since there is no clearance between characters, special graphics oriented characters can be generated by combining two or more character blocks. The full OSD menu is formed of 15 rows x 30 columns which can by freely positioned on anywhere of the monitor screen by changing vertical or horizontal delay. Special functions such as character background color, blinking, bordering or shadowing, four-level windows with programmable size, row double height and double width, programmable vertical height of character and row-to-row spacing, and full-screen erasing and Fade-In/Fade-Out are also incorporated. There are 8 color selections for any individual character display with row intensity attribute and window intensity attribute to expand the color mixture on OSD menu.

11.15.2. Features

• Totally 512 Fonts Including 496 Standard Fonts and 16 Multi-Color Fonts.

• 10x18 or 12x18 Font Matrix Selection

• Maximum Pixel CLK of 80MHz

• Maximum input resolution of 1580 dots/line (PIXin/HSYNC ratio)

• Wide Operating Frequency: max. 150KHz for Monitor

• Fully Programmable Character Array of 15 Rows by 30 Columns

• 8-Color Selection for Characters with Color Intensity Attribute on Each Row

• 7-Color Selection for Characters background

• True 16-Color Selection for Windows

• Shadowing on Windows with Programmable Shadow Width/Height/Color

• Fancy Fade-In/Fade-Out Effects

• Programmable Height of Character to Meet Multi-Sync Requirement

• Row To Row Spacing Control to Avoid Expansion Distortion

• Four Programmable Windows with Overlapping Capability

• Character Bordering or Shadowing

• Character/Symbol Blinking Function

• Programmable Vertical and Horizontal Positioning for Display Center

• M_BUS (IIC) Interface with Address $7A

11.15.3. Pin Description

Pin Assignment

(Pin 1)

This is the ground pin for the chip.

PIXin (Pin 2)

This is the Pixel clock input for chip. The MC141585 chip is driven by this pixel clock for all the logics inside.

17” TFT TV Service Manual 21/09/2004

NC (Pin 3)

No connection.

(Pin 4)

This is the +5V power pin for the chip.

HSYNC (Pin 5)

This pin inputs a horizontal synchronize signal. It is negative polarity by default. The leading edge of HSYNC synchronizes its internal horizontal timing. The maximum input ratio between PIXin/HSYNC should not greater than 1580 for displaying 12X18 font matrix. For displaying 10X18 font matrix, this ratio should not greater than 1280.

RESET (Pin 6)

An active low signal will reset ROW15 and ROW16 control registers. Refer to Control Registers section for default set-tings. A proper RC network have to be tighten to this pin to ensure the device initialize properly during power up. Refer to the application diagram.

SDA (Pin 7)

Data and control message are being transmitted to this chip from a host MCU via M_bus systems. This wire is configurated as a uni-directional data line. (Detailed description of protocols will be discussed in the M_BUS section).

SCL (Pin 8)

A separate synchronizing clock input from the transmitter is required for M_Bus protocol. Data is read at the rising edge of each clock signal.

(Pin 9)

This is the power pin for the digital logic of the chip.

VSYNC (Pin 10)

Similar to Pin 5, this pin inputs a vertical synchronize signal to synchronize the vertical control circuit. It is negative polarity by default.

(I) (Pin 11)

This is the voltage supply of RGB outputs when low intensity of Windows/ROW is selected. The RBG output level would be equal to VDD(I) in this case. Please refer to Row Attribute/Window registers for more detail. The input voltage for this pin should be equal to or less than V DD (Pin 17) for normal operation.

FBKG (Pin 12)

This pin will output a logic high while displaying characters or windows. It is defaulted to high impedance state after power on, or when there is no output. An external 10 κΩ resistor pulled low is recommended to avoid level toggling caused by hand effect when there is no output.

B,G,R (Pin 13, 14, 15)

LMOSD2-16 color outputs in CMOS level to the host monitor. These three signals are open drain outputs if 3_STATE bit is set and the color intensity is inactive. Otherwise, they are active high push-pull outputs. See “REGISTERS” for more information. These pins are in high impedance state after power on.

(Pin 24)

This is the ground pin for the digital logic of the chip.

17” TFT TV Service Manual 21/09/2004

11.16. MC34063

11.16.1. Description

The MC34063A Series is a monolithic control circuit containing the primary functions required for DC–to– DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step–Down and Step–Up and Voltage–Inverting applications with a minimum number of external components.

11.16.2. Features

• Operation from 3.0 V to 40 V Input

• Low Standby Current

• Current Limiting

• Output Switch Current to 1.5 A

• Output Voltage Adjustable

• Frequency Operation to 100 kHz

• Precision 2% Reference

11.16.3. Pin connections

17” TFT TV Service Manual 21/09/2004

11.17. MSP34X0G

MSP3400G

Multistandard Sound Processor Family

11.17.1. Introduction

The MSP 34x0G 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. Figure shows a simplified functional block diagram of the MSP 34x0G. This new generation of TV sound processing ICs now includes 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 34x0G has optimum stereo performance without any adjustments. All MSP 34x0G versions are pin and software downward compatible to the MSP 34x0D. The MSP 34x0G further simplifies controlling software. Standard selection requires a single I²C tra nsmission only. The MSP 34x0G has built-in automatic functions: The IC is able to detect the actual sound standard automatically (Automatic Standard Detection). Furthermore, pilot levels and identification signals can be evaluated internally with subsequent switching between mono/stereo/bilingual; no I²C interaction is necessary (Automatic Sound Selection).

Source Select

S bus interface consists of five pins:

1. I2S_DA_IN1, I2S_DA_IN2: For input, four channels (two channels per line, 2*16 bits) per sampling cycle (32 kHz) are transmitted.

2. I2S_DA_OUT: For output, two channels (2*16 bits) per sampling cycle (32 kHz) are transmitted.

3. I2S_CL: Gives the timing for the transmission of I

S serial data (1.024 MHz).

4. I2S_WS: The I2S_WS word strobe line defines the left and right sample.

11.17.2. Features

• Standard Selection with single I

C transmission

• Automatic Standard Detection of terrestrial TV standards

• Automatic Sound Selection (mono/stereo/bilingual), new registers MODUS, STATUS

• Two selectable sound IF (SIF) inputs

• Automatic Carrier Mute function

• Interrupt output programmable (indicating status change)

• Loudspeaker / Headphone channel with volume, balance, bass, treble, loudness

• AVC: Automatic Volume Correction

• Subwoofer output with programmable low-pass and complementary high-pass filter

17” TFT TV Service Manual 21/09/2004

• 5-band graphic equalizer for loudspeaker channel

• Spatial effect for loudspeaker channel

• Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART outputs

• Complete SCART in/out switching matrix

• Two I

S inputs; one I2S output

• Dolby Pro Logic with DPL 351xA coprocessor

• All analog FM-Stereo A2 and satellite standards; AM-SECAM L standard

• Simultaneous demodulation of (very) high-deviation FM-Mono and NICAM

• Adaptive deemphasis for satellite (Wegener-Panda, acc. to ASTRA specification)

• ASTRA Digital Radio (ADR) together with DRP 3510A

• All NICAM standards

• Korean FM-Stereo A2 standard

11.17.3. Pin connections

NC = not connected; leave vacant LV = if not used, leave vacant OBL = obligatory; connect as described in circuit diagram DVSS: if not used, connect to DVSS AHVSS: connect to AHVSS

Pin No. Pin Name Type

PLCC 68-pin

1 16 14 9 8 ADR_WS OUT LV ADR word strobe 2 - - - - NC LV Not connected 3 15 13 8 7 ADR_DA OUT LV ADR Data Output 4 14 12 7 6 I2S_DA_IN1 IN LV I2S1 data input 5 13 11 6 5 I2S_DA_OUT OUT LV I2S data output 6 12 10 5 4 I2S_WS IN/OUT LV I2S word strobe 7 11 9 4 3 I2S_CL IN/OUT LV I2S clock 8 10 8 3 2 I2C_DA IN/OUT OBL I2C data 9 9 7 2 1 I2C_CL IN/OUT OBL I2C clock 10 8 - 1 64 NC LV Not connected 11 7 6 80 63 STANDBYQ IN OBL Stand-by (low-active) 12 6 5 79 62 ADR_SEL IN OBL I2C bus address select 13 5 4 78 61 D_CTR_I/O_0 IN/OUT LV D_CTR_I/O_0 14 4 3 77 60 D_CTR_I/O_1 IN/OUT LV D_CTR_I/O_1 15 3 - 76 59 NC LV Not connected 16 2 - 75 58 NC LV Not connected 17 - - - - NC LV Not connected

18 1 2 74 57 AUD_CL_OUT OUT LV 19 64 1 73 56 TP LV Test pin

20 63 52 72 55 XTAL_OUT OUT OBL Crystal oscillator 21 62 51 71 54 XTAL_IN IN OBL Crystal oscillator 22 61 50 70 53 TESTEN IN OBL Test pin

23 60 49 69 52 ANA_IN2+ IN

24 59 48 68 51 ANA_IN- IN 25 58 47 67 50 ANA_IN1+ IN LV IF input 1

26 57 46 66 49 AVSUP OBL Analog power supply 5V

- - - 65 - AVSUP OBL Analog power supply 5V

- - - 64 - NC LV Not connected

- - - 63 - NC LV Not connected 27 56 45 62 48 AVSS OBL Analog ground

- - - 61 - AVSS OBL Analog ground 28 55 44 60 47 MONO_IN IN LV Mono input

- - - 59 - NC LV Not connected 29 54 43 58 46 VREFTOP OBL 30 53 42 57 45 SC1_IN_R IN LV SCART 1 input, right

31 52 41 56 44 SC1_IN_L IN LV SCART 1 input, left 32 51 - 55 43 ASG1 AHVSS Analog Shield Ground 1 33 50 40 54 42 SC2_IN_R IN LV SCART 2 input, right 34 49 39 53 41 SC2_IN_L IN LV SCART 2 input, left 35 48 - 52 40 ASG2 AHVSS Analog Shield Ground 2

PSDIP 64-pin

PSDIP 52-pin

PQFP 80-pin

PLQFP 64-pin

Connection (if not used)

AVSS via 56 pF/LV

Short Description

Audio clock output (18.432 MHz)

IF Input 2 (can be left vacant, only if IF input 1 is also not in use) IF common (can be left vacant, only if IF input 1 is also not in use)

Reference voltage IF A/D converter

17” TFT TV Service Manual 21/09/2004

36 47 38 51 39 SC3_IN_R IN LV SCART 3 input, right 37 46 37 50 38 SC3_IN_L IN LV SCART 3 input, left 38 45 - 49 37 ASG4 AHVSS Analog Shield Ground 4 39 44 - 48 36 SC4_IN_R IN LV SCART 4 input, right 40 43 - 47 35 SC4_IN_L IN LV SCART 4 input, left 41 - - 46 - NC LV or AHVSS Not connected 42 42 36 45 34 AGNDC OBL Analog reference voltage 43 41 35 44 33 AHVSS OBL Analog ground

- - - 43 - AHVSS OBL Analog ground

- - - 42 - NC LV Not connected

- - - 41 - NC LV Not connected 44 40 34 40 32 CAPL_M OBL Volume capacitor MAIN 45 39 33 39 31 AHVSUP OBL Analog power supply 8V 46 38 32 38 30 CAPL_A OBL Volume capacitor AUX 47 37 31 37 29 SC1_OUT_L OUT LV SCART output 1, left 48 36 30 36 28 SC1_OUT_R OUT LV SCART output 1, right 49 35 29 35 27 VREF1 OBL Reference ground 1 50 34 28 34 26 SC2_OUT_L OUT LV SCART output 2, left 51 33 27 33 25 SC2_OUT_R OUT LV SCART output 2, right 52 - - 32 - NC LV Not connected 53 32 - 31 24 NC LV Not connected 54 31 26 30 23 DACM_SUB OUT LV Subwoofer output 55 30 - 29 22 NC LV Not connected 56 29 25 28 21 DACM_L OUT LV Loudspeaker out, left 57 28 24 27 20 DACM_R OUT LV Loudspeaker out, right 58 27 23 26 19 VREF2 OBL Reference ground 2 59 26 22 25 18 DACA_L OUT LV Headphone out, left 60 25 21 24 17 DACA_R OUT LV Headphone out, right

- - - 23 - NC LV Not connected

- - - 22 - NC LV Not connected 61 24 20 21 16 RESETQ IN OBL Power-on-reset 62 23 - 20 15 NC LV Not connected 63 22 - 19 14 NC LV Not connected 64 21 19 18 13 NC LV Not connected 65 20 18 17 12 I2S_DA_IN2 IN LV I2S2-data input 66 19 17 16 11 DVSS OBL Digital ground

- - - 15 - DVSS OBL Digital ground

- - - 14 - DVSS OBL Digital ground 67 18 16 13 10 DVSUP OBL Digital power supply 5V

- - - 12 - DVSUP OBL Digital power supply 5V

- - - 11 - DVSUP OBL Digital power supply 5V 68 17 15 10 9 ADR_CL OUT LV ADR clock

17” TFT TV Service Manual 21/09/2004

11.18. DS90C385

11.18.1. General Description

The DS90C385 transmitter converts 28 bits of LVCMOS/LVTTL data into four LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. Every cycle of the transmit clock 28 bits of input data are sampled and transmitted. At a transmit clock frequency of 85 MHz, 24 bits of RGB data and 3 bits of LCD timing and control data (FPLINE, FPFRAME, DRDY) are transmitted at a rate of 595 Mbps per LVDS data channel. Using a 85 MHz clock, the data throughput is 297.5 Mbytes/sec. Also available is the DS90C365 that converts 21 bits of LVCMOS/LVTTL data into three LVDS (Low Voltage Differential Signaling) data streams. Both transmitters can be programmed for Rising edge strobe or Falling edge strobe through a dedicated pin. A Rising edge or Falling edge strobe transmitter will interoperate with a Falling edge strobe Receiver (DS90CF386/DS90CF366) without any tran slation logic. The DS90C385 is also offered in a 64 ball, 0.8mm fine pitch ball grid array (FBGA) package which provides a 44% reduction in PCB footprint compared to the TSSOP package. means to solve EMI and cable size problems associated with wide, high-speed TTL interfaces.

11.18.2. Features

• 20 to 85 MHz shift clock support

• Best–in–Class Set & Hold Times on TxINPUTs

• Tx power consumption <130 mW (typ) @85MHz Grayscale

• Tx Power-down mode <200µW (max)

• Supports VGA, SVGA, XGA and Single/Dual Pixel SXGA

• Narrow bus reduces cable size and cost

• Up to 2.38 Gbps throughput

• Up to 297.5 Megabytes/sec bandwidth

• 345 mV (typ) swing LVDS devices for low EMI

• PLL requires no external components

• Compatible with TIA/EIA-644 LVDS standard

• Low profile 56-lead or 48-lead TSSOP package

• DS90C385 also available in a 64 ball, 0.8mm fine pitch ball grid array (FBGA) package

This chipset is an ideal

11.18.3. Pinning

17” TFT TV Service Manual 21/09/2004

11.19. NDS8947

11.19.1. General Description

These P-Channel enhancement mode power field effect transistors are produced using Fairchild's proprietary, high cell density, DMOS technology. This very high density process is especially tailored to minimize on-state resistance and provide superior switching performance. These devices are particularly suited for low voltage applications such as notebook computer power management and other battery powered circuits where fast switching, low in-line power loss, and resistance to transients are needed.

11.19.2. Features

•

-4A, -30V. R

= 0.065W @ VGS = -10V

DS(ON)

= 0.1W @ VGS = -4.5V.

DS(ON)

• High density cell design for extremely low R

DS(ON).

• High power and current handling capability in a widely used surface mount package.

• Dual MOSFET in surface mount package.

17” TFT TV Service Manual 21/09/2004

12. SERVICE MENU SETTINGS

All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the maİn menu by pressing “M” button and then press the digits 4, 7, 2 and 5 buttons respectively. The following menu appears on the screen.

Adjust... Options... Aps Wss Test

TFT20 Version Time Da t e

After entering the Service menu, you can access its items by pressing “▲/▼” buttons. In order to enter selected menu, use “◄/►” buttons. To exit the service menu press “M” button. Entire service menu parameters of TFT TV are listed below.

12.1. ADJUST MENU SETTINGS

In order to enter Adjust menu, move the cursor to Adjust… parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button. The following menu appears on the screen.

P 08 CNN S 04 BG 463

There are no items for adjustment in ADJUST menu for now.

Service

Adjust...

17” TFT TV Service Manual 21/09/2004

12.2. OPTIONS MENU SETTINGS

In order to enter Options menu, move the cursor to Options… parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button. The following menu appears on the screen.

Options...

Hue First APS A.P.S. Headphone Vsr DBE Subwoofer Lineout Dolby prologic Equalizer

000: On

There are 50 items in the OPTIONS menu, but 10 of them are seen when you first enter the menu. Using “▲/▼”

buttons remaining items can be seen.

Hue On/Off Enables / disables Hue option in Picture menu.

First APS On/Off If ON, TV starts with APS menu at Start-up.

A.P.S On/Off Enables / disables Automatic Programming System.

Headphone On/Off Enables / disables the usage of the HP and HP related items in Sound menu.

Vsr On/Off Enables / disables Vsr.

DBE On/Off Enables / disables DBE.

Subwoofer On/Off

Enables / disables Subwoofer.

Lineout On/Off

Enables / disables Lineout.

Dolby prologic On/Off

Enables / disables dolby prologic system.

Equalizer On/Off

Enables / disables equalizer system.

BG On/Off Enables / disables BG Standard.

DK On/Off

Enables / disables DK Standard.

17” TFT TV Service Manual 21/09/2004

0 17 : O ff

I On/Off

Enables / disables I Standard.

Options...

Equalizer BG DK I L L’ AUS NZ NM FM Prs Avl On

L On/Off

Enables / disables L Standard.

L’ On/Off

Enables / disables L’ Standard.

AUS On/Off Enables / disables AUS Standard.

NZ On/Off Enables / disables NZ Standard.

NM On/Off Enables / disables NM Standard.

FM Prs Avl On

Adjusts the FM Prescaler value, when Automatic Volume Levelling is On. Min. Value: 0000 00000 Max. Value: 00FF 00255

0 27 : FFFF 65535

Options...

FM Prs Avl On Nicam Prs Avl On Scart Prs Avl On Scart Volume Avl On FM Prs Avl Off Nicam Prs Avl Off Scart Prs Avl Off Scart Volume Avl Off HOTEL VoD X

17” TFT TV Service Manual 21/09/2004

Nicam Prs Avl On

Adjusts the Nicam Prescaler value, when Automatic Volume Levelling is On. Min. Value: 0000 00000 Max. Value: 00FF 00255

Scart Prs Avl On

Adjusts the Scart Prescaler value, when Automatic Volume Levelling is On. Min. Value: 0000 00000 Max. Value: 00FF 00255

Scart Volume Avl On

Adjusts the Scart Volume value, when Automatic Volume Levelling is On. Min. Value: 0000 00000 Max. Value: 00FF 00255

FM Prs Avl Off

Adjusts the FM Prescaler value, when Automatic Volume Levelling is Off. Min. Value: 0000 00000 Max. Value: 00FF 00255

Nicam Prs Avl Off

Adjusts the Nicam Prescaler value, when Automatic Volume Levelling is Off. Min. Value: 0000 00000 Max. Value: 00FF 00255

Scart Prs Avl Off

Adjusts the Scart Prescaler value, when Automatic Volume Levelling is Off. Min. Value: 0000 00000 Max. Value: 00FF 00255

Scart Volume Avl Off

Adjusts the Scart Volume value, when Automatic Volume Levelling is Off. Min. Value: 0000 00000 Max. Value: 00FF 00255

Hotel VoD On/Off

Enables / disables Hotel Video-on-Demand feature.

Not used

Options...

X X X Avl Top TXT Fast TXT TXT Lang IF Freq Sound Carrier

036: On

17” TFT TV Service Manual 21/09/2004

Avl On/Off

Enables / disables Automatic Volume Levelling feature.

Top TXT On/Off

Enables / disables TopText feature.

Fast TXT On/Off

Enables / disables FastText feature.

TXT Lang

Switches between Teletext Language Groups. Min. Value: 0000 00000 Max. Value: 0004 00004

IF Freq

Adjusts the IF Frequency value. Min. Value: 0000 00000 Max. Value: 00FF 00255

Sound On/Off

Enables / disables Sound.

Carrier On/Off

Enables / disables sound Carrier feature.

Options...

Carrier RC_Options AV - 1 AV - 2 S - VIDEO AV - 3 PC MENU MIX HOTEL MODE

0 45 - Off

RC_Options On/Off

Enables / disables Remote control usage for Service menu.

AV-1 On/Off

Enables / disables AV-1.

AV-2 On/Off

Enables / disables AV-2.

S-VIDEO On/Off

Enables / disables S-VIDEO.

AV-3 On/Off

Enables / disables AV-3.

PC On/Off

Enables / disables PC.

17” TFT TV Service Manual 21/09/2004

MENU On/Off Enables / disables semi-transparent MENU.

MIX

Enables / disables teletext MIX mode. Enable: 00000001 Disable: 00000000

HOTEL MODE

Enables /disables Hotel mode feature. Enable: 00000001 Disable: 00000000

Not used.

LDLY

Adjusts the Luna / chroma DeLaY value. Min. Value: 0000 00000 Max. Value: 0008 00008

AGC

Adjusts the Automatic Gain Control value. Min. Value: 0000 00000 Max. Value: 001F 00031

Options...

AV - 3 PC MENU MIX HOTEL MODE X X X LDLY AGC

0 50 - 0012 00018

17” TFT TV Service Manual 21/09/2004

12.3. APS WSS TEST MENU

In order to enter Aps Wss Test menu, move the cursor to Aps Wss Test parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button. The following menu appears on the screen.

Aps Wss Test

Programme Search VPS Pdc Format 1 Pdc Format 2 Name Wss

P 08

CNN S 04 BG 463

There are 7 items in the Aps Wss Test menu. Programme

Search VPS Pdc Format 1 Pdc Format 2 Name Wss

17” TFT TV Service Manual 21/09/2004

13. BLOCK DIAGRAM

+12V

Power Supply

HEADPHONE OUT

PLL

TUNER

I2C

+12V

+5V

3.3V

2.5V

1.8V S+5V S3.3V S2.5V S1.8V

IC500

IF FRONTEND

TDA9885T

I2C

FLASH

CVBS IF

I2C

CONTROLLER

SDA5550M

IC400

VIDEO

DECODER

VPC3230

IC403

SWITCH 1

IC301

I2C

RGB

17"W BLOCK DIAGRAM 30.09.2003

PL303

IR_IN

LED

IC302

PROM

IC101

OSD

GENERATOR

MC14

I2C

BT656

CVBS / Y

SDRAM

IC100

SCALER

DEINTERLACER

GM6015

PORTB

PORTA

I2C

24Bit RGB

R(0-7) B(0-7) G(0-7)

DCLK D_VSYNC D_HSYNC

PL300

P+

P-

V+

V-

SOURCE

STBY

LED

CARD

KEYPAD

CARD

LVDS

17"W

TFT-LCD

PANEL

IVVV

IC702

Audio

Amplifier

PL401 PL402

8 ohm

AUDIO

8 ohm

IC700

Audio

Processor

MSP34x0

HEADPHONE OUT

I2C

SCART1 RGB IN

I2C

VIDEO

IC402

RGB

TV LINK

SCART 2 C

SWITCH 2

I2C

SCART 2 AV AUDIO IN/OUT

SCART 1 AV AUDIO IN/OUT

SCART 1 SVHS

SCART 1 CVBS IN/OUT

SCART 2 RGB IN

SCART 2

SCART 2 CVBS IN/OUT

MATRIX SWITCH

RCA_CVBS

SVHS / C

SVHS / Y

RCA AUDIO IN/OUT

IC105

ADC

AD9883

I2C

INVERTER

V G AA V

17” TFT TV Service Manual 21/09/2004

14. CIRCUIT DIAGRAMS

17” TFT TV Service Manual 21/09/2004

Toshiba 17WL46, 23WL46 Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual