Philips Plasma tv Service Manual

PLASMA TV

SERVICE MANUAL

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

TABLE OF CONTENTS

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

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

3. IF PART (TDA9886)...........................................................................................................................1

4. MULTI STANDARD SOUND PROCESSOR ..............................................................................2

5. 4.VIDEO SWITCH TEA6415............................................................................................................2

6. AUDIO AMPLIFIER STAGE WITH TDA7265.............................................................................2

7. POWER SUPPLY (SMPS)...............................................................................................................3

8. MICROCONTROLLER......................................................................................................................3

9. SERIAL ACCESS CMOS 4K x 8 (32K bit) EEPROM 24C32A..............................................3

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

11. SAW FILTERS......................................................................................................................................3

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

12.1. MC44608............................................................................................................................................5

12.1.1. Description................................................................................................................................5

12.1.2. General Features ......................................................................................................................5

12.1.3. Pin Connections .......................................................................................................................5

12.2. TCET1102G.......................................................................................................................................6

12.2.1. Description................................................................................................................................6

12.2.2. Applications ..............................................................................................................................6

12.2.3. 13.12.3.Features........................................................................................................................6

12.3. TDA9886............................................................................................................................................6

12.3.1. General Description..................................................................................................................6

12.3.2. Features.....................................................................................................................................6

12.3.3. Pinning.......................................................................................................................................7

12.4. TEA6415C..........................................................................................................................................7

12.4.1. General Description..................................................................................................................7

12.4.2. Features.....................................................................................................................................7

12.4.3. Pinning.......................................................................................................................................8

12.5. SAA3010T..........................................................................................................................................8

12.5.1. Description................................................................................................................................8

12.5.2. Features.....................................................................................................................................8

12.5.3. Pinning.......................................................................................................................................8

12.6. 24C32A..............................................................................................................................................9

12.6.1. Features.....................................................................................................................................9

12.6.2. Description................................................................................................................................9

12.6.3. Pin Function table.....................................................................................................................9

12.6.4. Functional Descriptions.........................................................................................................10

12.7. SAA5264..........................................................................................................................................10

12.7.1. Features...................................................................................................................................10

12.7.2. General Description................................................................................................................10

12.7.3. Pin Connections and Short Descriptions.............................................................................10

12.8. LM317..............................................................................................................................................12

12.8.1. General Description................................................................................................................12

12.8.2. Features...................................................................................................................................12

12.9. ST24LC21........................................................................................................................................12

12.9.1. Description..............................................................................................................................12

12.9.2. Features...................................................................................................................................12

12.9.3. Pin connections......................................................................................................................13

12.10. TLC7733 ..........................................................................................................................................13

12.10.1. Description..............................................................................................................................13

12.11. 74LVC257A......................................................................................................................................14

12.11.1. Features...................................................................................................................................14

12.11.2. Description..............................................................................................................................14

12.11.3. Pin Description .......................................................................................................................14

12.12. 74LVC14A........................................................................................................................................14

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.12.1. Features...................................................................................................................................14

12.12.2. Applications ............................................................................................................................14

12.12.3. Description..............................................................................................................................14

12.12.4. Pin Description .......................................................................................................................15

12.13. TEA6420..........................................................................................................................................15

12.13.1. Features...................................................................................................................................15

12.13.2. Description..............................................................................................................................15

12.14. LM1086............................................................................................................................................15

12.14.1. Description..............................................................................................................................15

12.14.2. Features...................................................................................................................................15

12.14.3. Applications ............................................................................................................................16

12.14.4. Connection Diagrams.............................................................................................................16

12.15. LM1117............................................................................................................................................16

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

12.15.2. Features...................................................................................................................................16

12.15.3. Applications ............................................................................................................................16

12.15.4. Connection Diagrams.............................................................................................................16

12.16. DS90C385........................................................................................................................................17

12.16.1. General Description................................................................................................................17

12.16.2. Features...................................................................................................................................17

12.16.3. Pin Description .......................................................................................................................17

12.17. TL431...............................................................................................................................................18

12.17.1. Description..............................................................................................................................18

12.17.2. Features...................................................................................................................................18

12.17.3. Pin Configurations..................................................................................................................18

12.18. MSP34X1G......................................................................................................................................19

12.18.1. Introduction.............................................................................................................................19

12.18.2. Features...................................................................................................................................20

12.18.3. Pin connections......................................................................................................................20

12.19. TDA7265..........................................................................................................................................22

12.19.1. Description..............................................................................................................................22

12.19.2. Features...................................................................................................................................22

12.19.3. Pin Connection .......................................................................................................................22

12.20. TDA1308..........................................................................................................................................22

12.20.1. General Description................................................................................................................22

12.20.2. Features...................................................................................................................................22

12.20.3. Pinning.....................................................................................................................................23

12.21. PI5V330 ...........................................................................................................................................23

12.21.1. General Description................................................................................................................23

12.22. AD9883A..........................................................................................................................................23

12.22.1. General Description................................................................................................................23

12.22.2. Features...................................................................................................................................23

12.22.3. Pin Descriptions .....................................................................................................................24

12.23. SAA7118E........................................................................................................................................26

12.23.1. General Description................................................................................................................26

12.23.2. Features...................................................................................................................................27

12.23.3. Pinning.....................................................................................................................................28

12.24. TPS72501........................................................................................................................................32

12.24.1. General Description................................................................................................................32

12.24.2. Features...................................................................................................................................32

12.25. TSOP1836 .......................................................................................................................................33

12.25.1. Description..............................................................................................................................33

12.25.2. Features...................................................................................................................................33

12.26. PCF8591..........................................................................................................................................33

12.26.1. General Description................................................................................................................33

12.26.2. Features...................................................................................................................................33

12.26.3. Pinning.....................................................................................................................................34

12.27. PW1231 ...........................................................................................................................................34

12.27.1. General Description................................................................................................................34

12.27.2. Features...................................................................................................................................34

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.27.3. Applications ............................................................................................................................35

12.28. PW181 .............................................................................................................................................35

12.28.1. General Description................................................................................................................35

12.28.2. Features...................................................................................................................................35

12.28.3. Applications ............................................................................................................................36

12.29. SIL151B ...........................................................................................................................................36

12.29.1. General Description................................................................................................................36

12.29.2. Features...................................................................................................................................36

12.30. SDRAM 4M x 16 (MT48LC4M16A2TG-75) .....................................................................................36

12.30.1. General Description................................................................................................................36

12.30.2. Features...................................................................................................................................37

12.30.3. Pin Descriptions .....................................................................................................................37

12.31. FLASH 8MBit ...................................................................................................................................39

12.31.1. Description..............................................................................................................................39

12.31.2. Features...................................................................................................................................39

13. SERVICE MENU SETTINGS ........................................................................................................40

13.1. display menu....................................................................................................................................40

13.2. calibration menu...............................................................................................................................42

13.3. deinterlacer menu ............................................................................................................................44

13.4. Service menu factory reset values...................................................................................................46

14. BLOCK DIAGRAM............................................................................................................................47

15. CIRCUIT DIAGRAMS ......................................................................................................................56

iii

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

1. INTRODUCTION

42” Plasma TV is a progressive TV control system with built-in de-interlacer and scaler. It uses a 852*480 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 2x14W (10%THD) for stereo 8Ω 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: 4 SCART’s with two of them supporting full SCART features including RGB input 2 AV inputs. (CVBS+ Stereo Audio) 1 SVHS iput 1 Streeo Headphone output 1 Subwoofer line level output 1 D-Sub 15 PC input 1 DVI input (Optional) 1 Stereo audio input for PC/DVI 1 LVDS connector for Plasma Display Connection

Other features include, 10 pg Teletext, Picture-In-Picture (PIP) , Picture-And-Picture (PAP) , PictureAnd-Text (PAT) and Picture Zoom.

2. TUNER

The tuners used in the design are combined VHF, UHF tuners suitable for CCIR systems B/G, H, L, L´, I/I´, and D/K. The tuning is available through the digitally controlled I2C bus (PLL). Below you will find info on one of the Tuners in use.

General description of UV1316:

The UV1316 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L’, I and I’. The low IF output impedance has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple transient.

Features of UV1316:

1. Member of the UV1300 family small sized UHF/VHF tuners

2. Systems CCIR: B/G, H, L, L’, I and I’; OIRT: D/K

3. Digitally controlled (PLL) tuning via I2C-bus

4. Off-air channels, S-cable channels and Hyperband

5. World standardised mechanical dimensions and world standard pinning

6. Compact size

7. Complies to “CENELEC EN55020” and “EN55013” Pinning:

1. Gain control voltage (AGC) : 4.0V, Max: 4.5V

2. Tuning voltage

3. I²C-bus address select : Max: 5.5V

4. I²C-bus serial clock : Min:-0.3V, Max: 5.5V

5. I²C-bus serial data : Min:-0.3V, Max: 5.5V

6. Not connected

7. PLL supply voltage : 5.0V, Min: 4.75V, Max: 5.5V

8. ADC input

9. Tuner supply voltage : 33V, Min: 30V, Max: 35V

10. Symmetrical IF output 1

11. Symmetrical IF output 2

3. IF PART (TDA9886)

The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL Both devices can be used for TV, VTR, PC and set-top box applications. The following figure shows the simplified block diagram of the integrated circuit. The integrated circuit comprises the following functional blocks:

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

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.

4. MULTI STANDARD SOUND PROCESSOR

The MSP34x1G family of single-chip Multistandard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip. These TV sound processing ICs include versions for processing the multichannel television sound (MTS) signal conforming to the standard recommended by the Broadcast Television Systems Committee (BTSC). The DBX noise reduction, or alternatively, Micronas Noise Reduction (MNR) is performed alignment free. Other processed standards are the Japanese FM-FM multiplex standard (EIA-J) and the FM Stereo Radio standard. Current ICs have to perform adjustment procedures in order to achieve good stereo separation for BTSC and EIA-J. The MSP34x1G has optimum stereo performance without any adjustments.

5. 4.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 TDA7265

The TDA7265 is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application as Hi-Fi music centers and stereo TV sets.

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

7. POWER SUPPLY (SMPS)

The DC voltages required at various parts of the chassis are provided by an SMPS transformer controlled by the IC MC44608, which is designed for driving, controlling and protecting switching transistor of SMPS. The transformer generates 145V for FBT input, +/-14V for audio amplifier, 5V and

3.3V stand by voltage and 8V, 12V and 5V supplies for other different parts of the chassis. An optocoupler is used to control the regulation of line voltage and stand-by power consumption. There is a regulation circuit in secondary side. This circuit produces a control voltage according to the changes in 145V DC voltage, via an optocoupler (TCET1102G) to pin3 of the IC. During the switch on period of the transistor, energy is stored in the transformer. During the switch off period energy is fed to the load via secondary winding. By varying switch-on time of the power transistor, it controls each portion of energy transferred to the second side such that the output voltage remains nearly independent of load variations.

8. MICROCONTROLLER

The microprocessor is embedded inside PW181 chip which also handles scaling, frame rate conversion and OSD generation. The on-chip 16-bit microprocessor is a Turbo x86-compatible processor core with on-chip peripherals (timers, interrupt controller, 2-wire serial master/slave interface, UART, I/O ports, and more). Special peripherals such as Infrared (IR) pulse decoders and a digital pulse width modulator (PWM) are also included. There are two independent 2-wire serial master/slave interface modules that can be multiplexed to control up to five 2-wire serial ports. The slave 2-wire interface is designed for HDCP use only (and requires the use of HDCP Image Processors). On-chip RAM of up to 64 Kbytes is available. A complete microprocessor system can be implemented simply by adding external ROM. The on-chip processor can be disabled to allow external processor control of all internal functions.

9. SERIAL ACCESS CMOS 4K x 8 (32K bit) EEPROM 24C32A

The Microchip Technology Inc. 24C32A is a 4K x 8 (32K bit) Serial Electrically Erasable PROM. It has been developed for advanced, low power applications such as personal communications or data acquisition. The 24C32A also has a page-write capability of up to 32 bytes of data. The 24C32A is capable of both random and sequential reads up to the 32K boundary. Functional address lines allow up to eight 24C32A devices on the same bus, for up to 256K bits address space. Advanced CMOS technology and broad voltage range make this device ideal for low-power/low-voltage, non-volatile code and data applications.

10. 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.

11. SAW FILTERS

K9656M: Standard:

• B/G

• D/K

• I

• L/L’

Features

• TV IF audio filter with two channels

• Channel 1 (L’) with one pass band for sound carriers at 40,40 MHz (L’) and 39,75 MHz (L’- NICAM)

• Channel 2 (B/G,D/K,L,I) with one pass band for sound carriers between 32,35 MHz and 33,40 MHz

Terminals

• Tinned CuFe alloy

Pin configuration

1 Input 2 Switching input 3 Chip carrier - ground 4 Output 5 Output

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

K3953M:

Standard:

• B/G

• D/K

• I

• L/L’

Features

TV IF video filter with Nyquist slopes at 33,90 MHz and 38,90 MHz Constant group delay Suitable for CENELEC EN 55020

Terminals

Tinned CuFe alloy

Pin configuration

1 Input 2 Input - ground 3 Chip carrier - ground 4 Output 5 Output

12. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM

MC44608 TCET1102G TDA9886 TEA6415C SAA3010T 24C32 SAA5264 LM317T ST24LC21 TLC7733 74LVC257A 74LVC14A TEA6420D LM1086 LM1117 DS90C385 TL431 MSP3411G TDA7265 TDA1308 PI5V330 AD9883A SAA7118E TPS72501 TSOP1836 PCF8591 PW1231 PW181 SIL151B SDRAM 4M x 16 (MT48LC4M16A2TG-75) FLASH

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.1. MC44608

12.1.1. Description

The MC44608 is a high performance voltage mode controller designed for off–line converters. This high voltage circuit that integrates the start–up current source and the oscillator capacitor, requires few external components while offering a high flexibility and reliability. The device also features a very high efficiency stand–by management consisting of an effective Pulsed Mode operation. This technique enables the reduction of the stand–by power consumption to approximately 1W while delivering 300mW in a 150W SMPS.

• Integrated Start–Up Current Source

• Fast Start–Up

• Lossless Off–Line Start–Up

• Direct Off–Line Operation

12.1.2. General Features

• Flexibility

• Duty Cycle Control

• Under voltage Lockout with Hysteresis

• On Chip Oscillator Switching Frequency 40, or 75kHz

• Secondary Control with Few External Components

Protections

• Maximum Duty Cycle Limitation

• Cycle by Cycle Current Limitation

• Demagnetization (Zero Current Detection) Protection

• “Over VCC Protection” Against Open Loop

• Programmable Low Inertia Over Voltage Protection Against Open Loop

• Internal Thermal Protection

GreenLineTM Controller

• Pulsed Mode Techniques for a Very High Efficiency Low Power Mode

• Lossless Startup

• Low dV/dT for Low EMI Radiations

12.1.3. Pin Connections

Pin Name Description

1 Demag The Demag pin offers 3 different functions: Zero voltage crossing detection (50mV), 24mA current

2 ISENSE The Current Sense pin senses the voltage developed on the series resistor inserted in the source

3 Control Input A feedback current from the secondary side of the SMPS via the opto–coupler is injected into this

4 Ground This pin is the ground of the primary side of the SMPS. 5 Driver The current and slew rate capability of this pin are suited to drive Power MOSFETs. 6 VCC This pin is the positive supply of the IC. The driver output gets disabled when the voltage becomes

7 This pin is to provide isolation between the Vi pin 8 and the VCC pin 6. 8 Vi This pin can be directly connected to a 500V voltage source for start–up function of the IC. During

detection and 120mA current detection. The 24mA level is used to detect the secondary reconfiguration status and the 120mA level to detect an Over Voltage status called Quick OVP.

of the power MOSFET. When I sense reaches 1V, the Driver output (pin 5) is disabled. This is known as the Over Current Protection function. A 200mA current source is flowing out of the pin 3 during the start–up phase and during the switching phase in case of the Pulsed Mode of operation. A resistor can be inserted between the sense resistor and the pin 3; thus a programmable peak current detection can be performed during the SMPS stand–by mode.

pin. A resistor can be connected between this pin and GND to allow the programming of the Burst duty cycle during the Stand–by mode.

higher than 15V and the operating range is between 6.6V and 13V. An intermediate voltage level of 10V creates a disabling condition called Latched Off phase.

the Start–up phase a 9 mA current source is internally delivered to the VCC pin 6 allowing a rapid charge of the VCC capacitor. As soon as the IC starts–up, this current source is disabled.

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.2. TCET1102G

12.2.1. Description

The TCET110/ TCET2100/ TCET4100 consists of a phototransistor optically coupled to a gallium arsenide infrared-emitting diode in a 4-lead up to 16-lead plastic dual inline package. The elements are mounted on one lead frame using a coplanar technique, providing a fixed distance between input and output for highest safety requirements.

12.2.2. Applications

Circuits for safe protective separation against electrical shock according to safety class II (reinforced isolation): For appl. class I – IV at mains voltage ≤300 V For appl. class I – III at mains voltage ≤600 V According to VDE 0884, table 2, suitable for: Switch-mode power supplies, line receiver, computer

peripheral interface, microprocessor system interface.

12.2.3. 13.12.3.Features

VDE 0884 related features:

Rated impulse voltage (transient overvoltage) V IOTM = 8 kV peak Isolation test voltage (partial discharge test voltage) V pd = 1.6 kV Rated isolation voltage (RMS includes DC) V IOWM = 600 V RMS (848 V peak) Rated recurring peak voltage (repetitive) V IORM = 600 V RMS

General features:

CTR offered in 9 groups Isolation materials according to UL94-VO Pollution degree 2 (DIN/VDE 0110 / resp. IEC 664) Climatic classification 55/100/21 (IEC 68 part 1) Special construction: Therefore, extra low coupling capacity of typical 0.2pF, high Common Mode Rejection Low temperature coefficient of CTR G = Leadform 10.16 mm; provides creepage distance > 8 mm, for TCET2100/ TCET4100 optional; suffix letter ‘G’ is not marked on the optocoupler Coupling System U

12.3. TDA9886

12.3.1. General Description

The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal PLL.

12.3.2. 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 I2C-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 converter; AFC

bits via I2C -bus readable

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

• 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 I2C-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).

12.3.3. 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; note 1 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

12.4. TEA6415C

12.4.1. General Description

The main function of the IC is to switch 8 video input sources on 6 outputs. Each output can be switched on only one of each input. On each input an alignment of the lowest level of the signal is made (bottom of synch. top for CVBS or black level for RGB signals). Each nominal gain between any input and output is 6.5dB. For D2MAC or Chroma signal the alignment is switched off by forcing, with an external resistor bridge, 5 VDC on the input. Each input can be used as a normal input or as a MAC or Chroma input (with external resistor bridge). All the switching possibilities are changed through the BUS. Driving 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.

12.4.2. Features

• 20MHz Bandwidth

• Cascadable with another TEA6415C (Internal address can be changed by pin 7 voltage)

• 8 Inputs (CVBS, RGB, MAC, CHROMA,...)

• 6 Outputs

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

• 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

12.4.3. 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

12.5. SAA3010T

12.5.1. Description

The SAA3010 is intended as a general purpose (RC-5) infrared remote control system for use where a low voltage supply and a large debounce time are expected. The device can generate 2048 different commands and utilizes a keyboard with a single pole switch for each key. The commands are arranged so that 32 systems can be addressed, each system containing 64 different commands. The circuit response to legal (one key pressed at a time) and illegal (more than one key pressed at a time) keyboard operation is specified in the section “Keyboard operation”.

12.5.2. Features

Low voltage requirement Biphase transmission technique Single pin oscillator Test mode facility

12.5.3. Pinning

Pin Mnemonic Function

1 X7 (IPU) sense input from key matrix 2 SSM (I) sense mode selection input 3 Z0-Z3 (IPU) sense inputs from key matrix 7 MDATA (OP3) generated output data modulated with 1/12 the oscillator frequency at a 25% duty factor 8 DATA (OP3) generated output information 9-13 DR7-DR3 (ODN) Scan drivers 14 VSS Ground (0V) 15-17 DR-2-DR0 (ODN) Scan drivers 18 OSC (I) Oscillator input

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

19 TP2 (I) test point 2 20 TP1 (I) Test point 1 21-27 X0-X6 (IPU) Sense inputs from key matrix 28 VDD(I) Voltage supply

Note:

(I): Input, (IPU): input with p-channel pull-up transistor, (ODN): output with open drain n-channel transistor (OD3): output 3-state

12.6. 24C32A

12.6.1. Features

• Voltage operating range: 4.5V to 5.5V

- Maximum write current 3 mA at 5.5V

- Standby current 1 mA typical at 5.0V

• 2-wire serial interface bus, I2CTM compatible

• 100 kHz and 400 kHz compatibility

• Self-timed ERASE and WRITE cycles

• Power on/off data protection circuitry

• Hardware write protect

• 1,000,000 Erase/Write cycles guaranteed

• 32-byte page or byte write modes available

• Schmitt trigger filtered inputs for noise suppression

• Output slope control to eliminate ground bounce

• 2 ms typical write cycle time, byte or page

• Up to eight devices may be connected to the same bus for up to 256K bits total memory

• Electrostatic discharge protection > 4000V

• Data retention > 200 years

• 8-pin PDIP and SOIC packages

• Temperature ranges

- Commercial (C): 0°C to 70°C

- Industrial (I): -40°C to +85°C

- Automotive (E): -40°C to +125°C

12.6.2. Description

12.6.3. Pin Function table

Name Function

A0, A1, A2 User Configurable Chip Selects Vss Ground SDA Serial Address/Data I/O SCL Serial Clock WP Write Protect Input Vcc +4.5V to 5.5V Power Supply

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.6.4. Functional Descriptions

The 24C32A supports a Bi-directional 2-wire bus and data transmission protocol. A device that sends data onto the bus is defined as transmitter, and a device receiving data as receiver. The bus must be controlled by a master device which generates the Serial Clock (SCL), controls the bus access, and generates the START and STOP conditions, while the 24C32A works as slave. Both master and slave can operate as transmitter or receiver but the master device determines which mode is activated.

12.7. SAA5264

12.7.1. Features

The following features apply to both SAA5264 and SAA5265:

• Complete 625 line teletext decoder in one chip reduces printed circuit board area and cost

• Automatic detection of transmitted fastext links or service information (packet 8/30)

• On-Screen Display (OSD) for user interface menus using teletext and dedicated menu icons

• Video Programming System (VPS) decoding

• Wide Screen Signalling (WSS) decoding

• Pan-European, Cyrillic, Greek/Turkish and French/Arabic character sets in each chip

• High-level command interface via I

C-bus gives easy control with a low software overhead

• High-level command interface is backward compatible to Stand-Alone Fastext And Remote Interface

(SAFARI)

• 625 and 525 line display

• RGB interface to standard colour decoder ICs, current source

• Versatile 8-bit open-drain Input/Output (I/O) expander, 5 V tolerant

• Single 12 MHz crystal oscillator

• 3.3 V supply voltage.

SAA5264 features

• Automatic detection of transmitted pages to be selected by page up and page down

• 8 Page fastext decoder

• Table Of Pages (TOP) decoder with Basic Top Table (BTT) and Additional Information Tables (AITs)

• 4 Page user-defined list mode.

12.7.2. General Description

The SAA5264 is a single-chip ten page 625-line World System Teletext decoder with a high-level command interface, and is SAFARI compatible. The device is designed to minimize the overall system cost, due to the high-level command interface offering the benefit of a low software overhead in the TV microcontroller. The SAA5264 has the following functionality:

• 10 page teletext decoder with OSD, Fastext, TOP, default and list acquisition modes

• Automatic channel installation support

• Closed caption acquisition and display

• Violence Chip (VChip) support.

12.7.3. Pin Connections and Short Descriptions

SYMBOL PIN TYPE DESCRIPTION

Port 2: 8-bit programmable bidirectional port with alternative functions

P2.0/PWM 1 I/O P2.1/PWM0 2 I/O P2.2/PWM1 3 I/O P2.3/PWM2 4 I/O P2.4/PWM3 5 I/O P2.5/PWM4 6 I/O P2.6/PWM5 7 I/O P2.7/PWM6 8 I/O

Port 3: 8-bit programmable bidirectional port with alternative functions P3.0/ADC0 P3.1/ADC1

9 I/O 10 I/O

output for 14-bit high precision Pulse Width Modulator (PWM) outputs for 6-bit PWMs 0 to 6

inputs for the software Analog-to-Digital-Converter (ADC) facility

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

P3.2/ADC2 P3.3/ADC3 P3.4/PWM7

SSC

11 I/O 12 I/O 30 I/O 13 I/O

output for 6-bit PWM7

core ground Port 0: 8-bit programmable bidirectional port SCL(NVRAM) SDA(NVRAM) P0.2 P0.3 P0.4 P0.5

14 I 15 I/O 16 I/O 17 I/O 18 I/O 19 I/O

I2C-bus Serial Clock input to Non-Volatile RAM

I2C-bus Serial Data input/output (Non-Volatile RAM)

input/output for general use

8 mA current sinking capability for direct drive of Light Emitting

Diodes (LEDs) P0.6 P0.7

22 -

SSA

CVBS0

20 I/O 21 I/O

23 I

input/output for general use

analog ground

Composite Video Baseband Signal (CVBS) input; a positive-going

1V CVBS1 SYNC_FILTER

24 I 25 I sync-pulse-filter input for CVBS; this pin should be connected to V

(peak-to-peak) input is required; connected via a 100 nF capacitor

via a 100 nF capacitor IREF

26 I

reference current input for analog circuits; for correct operation a 24

κΩ resistor should be connected to V FRAME

27 O

Frame de-interlace output synchronized with the VSYNC pulse to

produce a non-interlaced display by adjustment of the vertical

deflection circuits TEST COR

28 I not available; connect this pin to V 29 O

contrast reduction: open-drain, active LOW output which allows

selective contrast reduction of the TV picture to enhance a mixed

mode display

31 -

DDA

B G R VDS

HSYNC

30 I/O 32 O

33 O 34 O 35 O 36 I

P3.4/PWM7 (described above)

analog supply voltage (3.3 V)

Blue colour information pixel rate output

Green colour information pixel rate output

Red colour information pixel rate output

video/data switch push-pull output for pixel rate fast blanking

horizontal sync pulse input: Schmitt triggered for a Transistor

Transistor Level (TTL) version; the polarity of this pulse is

programmable by register bit TXT1.H POLARITY VSYNC

37 I

vertical sync pulse input; Schmitt triggered for a TTL version; the

polarity of this pulse is programmable by register bit TXT1.V

POLARITY

SSP

DDC

OSCGND XTALIN XTALOUT RESET

38 39 40 -* 41 I 42 O 43 I

periphery ground

core supply voltage (+3.3 V)

crystal oscillator ground

12 MHz crystal oscillator input

12 MHz crystal oscillator output

reset input; if this pin is HIGH for at least 2 machine cycles (24

oscillator periods) while the oscillator is running, the device resets;

this pin should be connected to V

DDP

44 -

periphery supply voltage (+3.3 V) Port 1: 8-bit programmable bidirectional port

P1.0 P1.1 P1.2 P1.3 SCL

45 I/O 46 I/O 47 I/O 48 I/O 49 I

input/output for general use

I2C-bus Serial Clock input from application

SSA

via a capacitor

DDP

SSA

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

SDA P1.4 P1.5

50 I/O 51 I/O 52 I/O

I2C-bus Serial Data input from (application)

input/output for general use

12.8. LM317

12.8.1. General Description

The LM117/LM217/LM317 are monolithic integrated circuit in TO-220, ISOWATT220, TO-3 and D 2 PAK packages intended for use as positive adjustable voltage regulators. They are designed to supply more than 1.5A of load current with an output voltage adjustable over a

1.2 to 37V range. The nominal output voltage is selected by means of only a resistive divider, making the device exceptionally easy to use and eliminating the stocking of many fixed regulators.

12.8.2. Features

• Output voltage range : 1.2 To 37V

• Output current In excess of 1.5A

• 0.1% Line and Load Regulation

• Floating Operation for High Voltages

• Complete Series of Protections : Current Limiting, Thermal Shutdown And Soa Control

12.9. ST24LC21

12.9.1. 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 I2C 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 I2C bidirectional mode upon the falling edge of the signal applied on SCL pin. The ST24LC21 can not switch from the I2C 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.

12.9.2. 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 I2C 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

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.9.3. 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

12.10. TLC7733

12.10.1. Description

The TLC77xx family of micropower supply voltage supervisors are designed for reset control, primarily in microcomputer and microprocessor systems. During power-on, RESET is asserted when V

reaches 1 V. After minimum V

(. 2 V) is established,

the circuit monitors SENSE voltage and keeps the reset outputs active as long as SENSE voltage (V

I(SENSE)

)

remains below the threshold voltage. An internal timer delays return of the output to the inactive state to ensure proper system reset. The delay time, td, is determined by an external capacitor: t

= 2.1 x 10 4 x CT

where C

is in farads

td is in seconds The TLC77xx has a fixed SENSE threshold voltage set by an internal voltage divider. When SENSE voltage drops below the threshold voltage, the outputs become active and stay in that state until SENSE voltage returns above threshold voltage and the delay time, td, has expired. In addition to the power-on-reset and undervoltage-supervisor function, the TLC77xx adds power-down control support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor contains additional logic intended for control of static memories with battery backup during power failure. By driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL driven by the memory bank select signal (CSH1) of the microprocessor (see Figure 10), the memory circuit is automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the battery.) The TLC77xxQ is characterized for operation over a temperature range of –40°C to 125°C, and the TLC77xxI is characterized for operation over a temperature range of –40°C to 85°C.

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.11. 74LVC257A

12.11.1. Features

Wide supply voltage range of 1.2 to 3.6 V In accordance with JEDEC standard no. 8-1A CMOS lower power consumption Direct interface with TTL levels Output drive capability 50 _ transmission lines at 85°C 5 Volt tolerant inputs/outputs, for interfacing with 5 Volt logic

12.11.2. Description

The 74LVC257A is a high-performance, low-power, low-voltage, Si-gate CMOS device and superior to most advanced CMOS compatible TTL families. Inputs can be driven from either 3.3V or 5.0V devices. In 3-State operation, outputs can handle 5V. This feature allows the use of these devices as translators in a mixed 3.3V/5V environment. The 74LVC257A is a quad 2-input multiplexer with 3-state outputs, which select 4 bits of data from two sources and are controlled by a common data select input (S). The data inputs from source 0 (1l 0 to 4l 0 ) are selected when input S is LOW and the data inputs from source 1 (1l 1 to 4l 1 ) are selected when S in HIGH. Data appears at the outputs (1Y to 4Y) in true (non-inverting) form from the selected inputs. The 74LVC257A is the logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined by the logic levels applied to S. The outputs are forced to a high impedance OFF-state when OE is HIGH.

12.11.3. Pin Description

PIN NUMBER SYMBOL DESCRIPTION

1 S Common data select input 2, 5, 11, 14 3, 6, 10, 13 4,7,9,12 1Y to 4Y 3-State multiplexer outputs 8 GND Ground (0V) 15 OE 3-State output enable input (active LOW) 16 Vcc Positive supply voltage

1|0 to 4|0 1|1 to 4|1

Data inputs from source 0 Data outputs from source 1

12.12. 74LVC14A

12.12.1. Features

• Wide supply voltage range of 1.2 to 3.6 V

• In accordance with JEDEC standard no. 8-1A

• Inputs accept voltages up to 5.5 V

• CMOS low power consumption

• Direct interface with TTL levels

12.12.2. Applications

• Wave and pulse shapers for highly noisy environments

• Astable multivibrators

• Monostable multivibrators

12.12.3. Description

The 74LVC14A is a high-performance, low power, low-voltage Si-gate CMOS device and superior to most advanced CMOS compatible TTL families. Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in a mixed 3.3 V/5 V environment. The 74LVC14A provides six inverting buffers with Schmitt-trigger action. It is capable of transforming slowly changing input signals into sharply defined, jitter-free output signals.

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.12.4. Pin Description

PIN NUMBER SYMBOL DESCRIPTION

1, 3, 5, 9, 11, 13 1A – 6A Data inputs 2, 4, 6, 8, 10, 12 1Y – 6Y Data outputs 7 GND Ground (0V) 14 Vcc Positive supply voltage

12.13. TEA6420

12.13.1. Features

• 5 Stereo Inputs

• 4 Stereo Ouputs

• Gain Control 0/2/4/6db/Mutefor EachOutput

• Cascadable (2 Different Addresses)

• Serial Bus Controlled

• Very Low noise

• Very Low distorsion

12.13.2. Description

The TEA6420 switches 5 stereo audio inputs on 4 stereo outputs. All the switching possibilities are changed through the I2C bus.

12.14. LM1086

12.14.1. Description

The LM1086 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at

1.5A of load current. It has the same pin-out as National Semiconductor’s industry standard LM317. The LM1086 is available in an adjustable version, which can set the output voltage with only two external resistors. It is also available in five fixed voltages: 2.5V, 2.85V, 3.3V, 3.45V and 5.0V. The fixed versions integrate the adjust resistors. The LM1086 circuit includes a zener trimmed band-gap reference, current limiting and thermal shutdown.

12.14.2. Features

• Available in 2.5V, 2.85V, 3.3V, 3.45V, 5V and Adjustable Versions

• Current Limiting and Thermal Protection

• Output Current 1.5A

• Line Regulation 0.015% (typical)

• Load Regulation 0.1% (typical)

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

12.14.3. Applications

• SCSI-2 Active Terminator

• High Efficiency Linear Regulators

• Battery Charger

• Post Regulation for Switching Supplies

• Constant Current Regulator

• Microprocessor Supply

12.14.4. Connection Diagrams

12.15. LM1117

12.15.1. 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 SOT223, 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.

12.15.2. 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

12.15.3. 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

12.15.4. Connection Diagrams

Plasma TV Service Manual 24/10/2003

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com

+ 46 hidden pages