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CONTENTS SAFETY PRECAUTIONS: ........................................................................................................................................... 3 TV set switched off..................................................................................................................................................... 3 Measurements............................................................................................................................................................. 3 PERI-TV SOCKET ........................................................................................................................................................ 3 SCART 1 .................................................................................................................................................................... 3 SCART 2 .................................................................................................................................................................... 3 1. INTRODUCTION ...................................................................................................................................................... 4 2. SMALL SIGNAL&CONTROLLER PART WITH TDA935X/6X/8X ..................................................................... 4 2.1 Vision IF amplifier ............................................................................................................................................... 4 2.2 QSS Sound circuit (QSS versions) ....................................................................................................................... 4 2.3 FM demodulator and audio amplifier (mono versions) ........................................................................................ 4 2.4 Video switch ......................................................................................................................................................... 5 2.5 Synchronisation circuit ......................................................................................................................................... 5 2.6 Chroma and luminance processing ....................................................................................................................... 5 2.7 Colour decoder ..................................................................................................................................................... 5 2.8 RGB output circuit and black-current stabilisation .............................................................................................. 6 2.9 ”-Controller .......................................................................................................................................................... 6 3. TUNER....................................................................................................................................................................... 6 4.VIDEO SWITCH TEA6415C ..................................................................................................................................... 7 5. AM DEMODULATOR TDA9830............................................................................................................................. 7 6. DIGITAL TV SOUND PROCESSOR MSP34X0 ..................................................................................................... 7 7. SOUND OUTPUT STAGE TDA2614/TDA2615 ..................................................................................................... 8 8. VERTICAL OUTPUT STAGE WITH TDA8357 ..................................................................................................... 8 9. VIDEO OUTPUT AMPLIFIER TDA6107/08Q........................................................................................................ 8 10. POWER SUPPLY (SMPS) ...................................................................................................................................... 8 11. POWER FACTOR CORRECTION ......................................................................................................................... 8 12. SERIAL ACCESS CMOS 16K EEPROM 24C16 ................................................................................................... 8 13. CLASS AB STEREO HEADPHONE DRIVER TDA1308..................................................................................... 8 14. SAW FILTERS ........................................................................................................................................................ 9 IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM...................................................................................... 9 TDA935X/6X/8X ..................................................................................................................................................... 10 FUNCTIONAL DIFFERENCES BETWEEN IC VERSIONS............................................................................ 11 Block diagram TDA935X/6X/8X with mono intercarrier sound demodulator .................................................... 13 Block diagram TDA935X/6X/8X with QSS IF sound channel............................................................................ 14 UV1315, UV1316, UV1336..................................................................................................................................... 14 TEA6415C................................................................................................................................................................ 16 TDA9830.................................................................................................................................................................. 17 TDA2614/TDA2615................................................................................................................................................. 17 TDA8357.................................................................................................................................................................. 18 TDA6107/08Q.......................................................................................................................................................... 19 MC44608.................................................................................................................................................................. 20 MSP34X0D .............................................................................................................................................................. 20 24C16 ....................................................................................................................................................................... 21 TDA1308.................................................................................................................................................................. 22 SAW FILTERS ........................................................................................................................................................ 22 AK32 CHASSIS MANUAL ADJUSTMENTS PROCEDURE .................................................................................. 24 IF FREQUENCY SELECTION ............................................................................................................................... 24 EČEPROM INITIALIZE ........................................................................................................................................... 24 STEPSIZE & STEPDELAY .................................................................................................................................... 24 TUNER BAND SWITCHING ................................................................................................................................. 24 OPTIONS ................................................................................................................................................................. 25 OPTION 1 ............................................................................................................................................................ 25 OPTION 2 ............................................................................................................................................................ 25 OPTION 3 ............................................................................................................................................................ 25 OPTION 4 ............................................................................................................................................................ 25 OPTION 5 ............................................................................................................................................................ 26 OPTION 6 ............................................................................................................................................................ 26
MAXIMUM VOLUME OUTPUT LIMITING........................................................................................................ 26 POWER-UP MODE SELECTION .......................................................................................................................... 26 TUNING MODE SELECTION ............................................................................................................................... 26 CONFIGURATION BITS........................................................................................................................................ 26 OSD BRIGTNESS & POSITION ............................................................................................................................ 27 LUMINANCE DELAY ADJUSTMENT................................................................................................................. 27 WHITE BALANCE ADJUSTMENT ...................................................................................................................... 28 16:9 VERTICAL AMPLITUDE ADJUSTMENT ................................................................................................... 28 S-CORRECTION ADJUSTMENT .......................................................................................................................... 28 VERTICAL SHIFT ADJUSTMENT ....................................................................................................................... 29 VERTICAL SCAN DISABLE ................................................................................................................................. 29 4:3 VERTICAL AMPLITUDE ADJUSTMENT ..................................................................................................... 29 4:3 VERTICAL SLOPE ADJUSTMENT ................................................................................................................ 29 HORIZONTAL SHIFT ADJUSTMENT ................................................................................................................. 29 AGC ADJUSTMENT............................................................................................................................................... 29 GEOMETRY ADJUSTMENTS PROCEDURE .......................................................................................................... 30 GENERAL BLOCK DIAGRAM OF CHASSIS 11AK32........................................................................................... 32
DO NOT CHANGE ANY MODULE UNLESS THE SET IS SWITCHED OFF The mains supply side of the switch mode power supply transformer is live. Use an isolating transformer. The receiver completely fulfils the safety requirements. SAFETY PRECAUTIONS: Servicing of this TV should be carried out only by a qualified person. - Components marked with the warning symbol on the circuit diagram are critical for safety and must only be replaced with an identical component. - Power resistor and fusable resistors must be mounted in an identical manner to the original component. - When servicing this TV, check that the EHT does not exceed 26kV. TV set switched off: Make short-circuit between HV-CRT clip and CRT ground layer. Short C815 before changing IC800 and IC801 or other components in primary side of SMPS. Measurements: Voltage readings and oscilloscope traces are measured under following conditions. Antenna signal 60dB from colourbar generator. (100% white, 75% colour saturation) Brightness, contrast, colour set for a normal picture. Mains supply, 220VAC, 50Hz. PERI-TV SOCKET - The figure of Peri-TV socketSCART 1
1 Audio right output 0.5Vrms / 1K 2 Audio right input 0.5Vrms / 10K 3 Audio left output 0.5Vrms / 1K 4 Ground AF 5 Ground Blue 6 Audio left input 0.5Vrms / 10K 7 Blue input 0.7Vpp / 75ohm 8 AV switching input 0-12VDC /10K 9 Ground Green 10 11 Green input 0.7Vpp / 75ohm 12 13 Ground Red 14 Ground Blanking 15 Red input 0.7Vpp / 75ohm 16 Blanking input 0-0.4VDC, 1-3VDC / 75 Ohm 17 Ground CVBS output 18 Ground CVBS input 19 CVBS output 1Vpp / 75ohm 20 CVBS input 1Vpp / 75ohm 21 Ground
SCART 2
1 Audio right output 2 Audio right input 3 Audio left output 4 Ground AF 5 Ground Blue 6 Audio left input 7 Blue input 8 AV switching input 9 Ground Green 10 11 12 13 Ground Red 14 Ground Blanking 15 16 17 Ground CVBS output 18 Ground CVBS input 19 CVBS output 20 CVBS input 21 Ground 0.5Vrms / 1K 0.5Vrms / 10K 0.5Vrms / 1K 0.5Vrms / 10K 0-12VDC /10K
1Vpp / 75ohm 1Vpp / 75ohm
1. INTRODUCTION 11AK32 is a 90° chasis capable of driving 20"/21" tubes at appropriate currents. The chasis is capable of working in Pal, Secam and NTSC standards. The sound system is capable of giving 6 watts RMS output into a load of 8 ohms. One page, 8 page SIMPLETEXT, TOPTEXT, FASTTEXT and US Closed Caption is provided. The chasis is equipped with 21 pin Scart connectors. 2. SMALL SIGNAL&CONTROLLER PART WITH TDA935X/6X/8X The TDA935X/6X/8X UOC(Ultimate One Chip) combine all small signal and micro controller functions required for a colour TV receiver. The various versions of theTDA935X/6X/8X series combine the functions of a TV signal processor together with a ”-controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1or 10 page text. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in S-DIP envelope with 64 pins. 2.1 Vision IF amplifier The vision IF amplifier can demodulate signals with positive and negative modulation. The PLL demodulator is completely alignment-free. The VCO of the PLL circuit is internal and the frequency is fixed to the required value by using the clock frequency of the ”-controller/Teletext decoder as a reference. The setting of the various frequencies (38, 38.9, 45.75 and 58.75 MHz) can be made via software control. Because of the internal VCO the IF circuit has a high immunity to EMC interferences. 2.2 QSS Sound circuit (QSS versions) The sound IF amplifier is similar to the vision IF amplifier and has an external AGC decoupling capacitor. The single reference QSS mixer is realised by a multiplier. In this multiplier the SIF signal is converted to the intercarrier frequency by mixing it with the regenerated picture carrier from the VCO. The mixer output signal is supplied to the output via a high-pass filter for attenuation of the residual video signals. With this system a high performance hi-fi stereo sound processing can be achieved. The AM sound demodulator is realised by a multiplier. The modulated sound IF signal is multiplied in phase with the limited SIF signal. The demodulator output signal is supplied to the output via a low-pass filter for attenuation of the carrier harmonics. The AM signal is supplied to the output (pin 44) via the volume control. 2.3 FM demodulator and audio amplifier (mono versions) The FM demodulator is realised as narrow-band PLL with external loop filter, which provides the necessary selectivity without using an external band-pass filter. To obtain a good selectivity a linear phase detector and a constant input signal amplitude are required. For this reason the intercarrier signal is internally supplied to the demodulator via a gain controlled amplifier and AGC circuit. The nominal frequency of the demodulator is tuned to the required frequency (4.5/5.5/6.0/6.5 MHz) by means of a calibration circuit which uses the clock frequency of the ”controller/Teletext decoder as a reference. The setting to the wanted frequency is realised by means of the software. It can be read whether the PLL frequency is inside or outside the window and whether the PLL is in lock or not. With this information it is possible to make an automatic search system for the incoming sound frequency. This is realised by means of a software loop which switches the demodulator to the various frequencies and then select the frequency on which a lock condition has been found. The deemphasis output signal amplitude is independent of the TV standard and has the same value for a frequency deviation of ±25 kHz at the 4.5 MHz standard and for a deviation of ±50 Khz for the other standards. When the IF circuit is switched to positive
modulation the internal signal on the deemphasis pin is automatically muted. The audio control circuit contains an audio switch and volume control. In the mono intercarrier sound versions the Automatic Volume Levelling (AVL) function can be activated. The pin to which the external capacitor has to be connected depends on the IC version. For the 90° types the capacitor is connected to the EW output pin (pin 20). When the AVL is active it automatically stabilises the audio output signal to a certain level. 2.4 Video switch The video switch has one input for an external CVBS or Y/C signal. The selected CVBS signal can be supplied to pin 38, the IF video output. The selection between both signals is realised by means of software control. 2.5 Synchronisation circuit The IC contains separator circuits for the horizontal and vertical sync pulses and a data-slicing circuit which extracts the digital teletext data from the analog signal. The horizontal drive signal is obtained from an internal VCO which is running at a frequency of 25 MHz. This oscillator is stabilised to this frequency by using a 12 MHz signal coming from the reference oscillator of the ”-controller/Teletext decoder. The horizontal drive is switched on and off via the soft start/stop procedure. This function is realised by means of variation of the TON of the horizontal drive pulses. The vertical synchronisation is realised by means of a divider circuit. The vertical ramp generator needs an external resistor and capacitor. For the vertical drive a differential output current is available. The outputs must be DC coupled to the vertical output stage. In the types which are intended for 90° picture tubes the following geometry parameters can be adjusted: · Horizontal shift · Vertical amplitude · Vertical slope · S-correction · Vertical shift 2.6 Chroma and luminance processing The chroma band-pass and trap circuits (including the SECAM cloche filter) are realised by means of gyrators and are tuned to the right frequency by comparing the tuning frequency with the reference frequency of the colour decoder. The luminance delay line and the delay cells for the peaking circuit are also realised with gyrators. The circuit contains a black stretcher function which corrects the black level for incoming signals which have a difference between the black level and the blanking level. 2.7 Colour decoder The ICs can decode PAL, NTSC and SECAM signals. The PAL/NTSC decoder does not need external reference crystals but has an internal clock generator which is stabilised to the required frequency by using the 12 MHz clock signal from the reference oscillator of the ”controller/Teletext decoder. The SECAM decoder contains an auto-calibrating PLL demodulator which has two references, the divided 12 MHz reference frequency (obtained from the ”controller) which is used to tune the PLL to the desired free-running frequency and the bandgap reference to obtain the correct absolute value of the output signal. The VCO of the PLL is calibrated during each vertical blanking period, when the IC is in search or SECAM mode. The base-band delay line (TDA 4665 function) is integrated. This delay line is also active during NTSC to obtain a good suppression of cross colour effects. The demodulated colour difference signals are internally supplied to the delay line.
2.8 RGB output circuit and black-current stabilisation In the RGB control circuit the signal is controlled on contrast, brightness and saturation. The ICs have linear input for external RGB signals. The signals for OSD and text are internally supplied to the control circuit. The output signal has an amplitude of about 2 Volts black-to-white at nominal input signals and nominal settings of the various controls. To obtain an accurate biasing of the picture tube the `Continuous Cathode Calibration' system has been included in these ICs. A black level offset can be made with respect to the level, which is generated by the black current stabilization system. In this way different colour temperatures can be obtained for the bright and the dark part of the picture. During switch-off of the TV receiver a fixed beam current is generated by the black current control circuit. This current ensures that the picture tube capacitance is discharged. During the switch-off period the vertical deflection is placed in an overscan position so that the discharge is not visible on the screen. 2.9 ”-Controller ”-Controller part is a 8-bit controller based on 8051 core with embedded teletext, Closed Caption, On screen Display and TV controller functions. ”-Controller has the following features · Display of the program number, channel number, TV Standard, analogue values, sleep timer, parental control and mute is done by OSD · Single LED for standby and on mode indication · System configuration with service mode · 3 level logic output for Secam and Tuner band switching 3. TUNER Either a PLL or a VST tuner is used as a tuner. UV1316 (VHF/UHF) is used as a PLL tuner. For only PALM/N, NTSC M applications UV 1336 is used as the PLL tuner. UV 1315 (VHF/UHF) is used as a VST Tuner. Channel coverage of UV1316: BAND Low Band Mid Band High Band OFF-AIR CHANNELS CHANNELS FREQUENCY RANGE (MHz) E2 to C 48.25 to 82.25 (1) E5 to E12 175.25 to 224.25 E21 to E69 471.25 to 855.25 (2) CABLE CHANNELS CHANNELS FREQUENCY RANGE (MHz) S01 to S08 69.25 to 154.25 S09 to S38 161.25 to 439.25 S39 to S41 447.25 to 463.25
(1). Enough margin is available to tune down to 45.25 MHz. (2). Enough margin is available to tune up to 863.25 MHz. Noise Typical Max. Low band : 5dB 9dB Mid band : 5dB 9dB High band : 6dB 9dB Gain Min. Typical Max. All channels : 38dB 44dB 52dB Gain Taper (of-air channels): 8dB
Channel Coverage UV1336: BAND Low Band Mid Band High Band CHANNELS 2 to D E to PP QQ to 69 FREQUENCY RANGE (MHz) 55.25 to 139.25 145.25 to 391.25 397.25 to 801.25
Noise is typically 6dB for all channels. Gain is minimum 38dB and maximum 50dB for all channels. Channel Coverage of UV1315: BAND Low Band Mid Band High Band OFF-AIR CHANNELS CHANNELS FREQUENCY RANGE (MHz) E2 to C 48.25 to 82.25 (1) E5 to E12 175.25 to 224.25 E21 to E69 471.25 to 855.25 (2) CABLE CHANNELS CHANNELS FREQUENCY RANGE (MHz) S01 to S10 69.25 to 168.25 S11 to S39 231.25 to 447.25 S40 to S41 455.25 to 463.25
(1). Enough margin is available to tune down to 45.25 MHz. (2). Enough margin is available to tune up to 863.25 MHz. Noise Low band Mid band High band Typ. 6dB 6dB 6dB Max. 9dB 10dB 11dB Gain Min. Typ. Max. All Channels 38dB 44dB 50dB Gain Taper 8dB (off-air channels)
4.VIDEO SWITCH TEA6415C In case of multiple external sources are used, the video switch IC TEA6415C 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 I2C Bus. It is possible to have the same input connected to several outputs. 5. AM DEMODULATOR TDA9830 The TDA9830 is designed for AM-sound demodulation used in L and L' standard. The IC consists of Sound IF input, IF AGC, AM demodulator and Audio switch circuits. 6. DIGITAL TV SOUND PROCESSOR MSP34X0 The MSP 34x0D is designed to perform demodulation of FM or AM-Mono TV sound. Alternatively, two-carrier FM systems according to the German or Korean terrestrial specs or the satellite specs can be processed with the MSP 34x0D. Digital demodulation and decoding of
NICAM-coded TV stereo sound, is done only by the MSP 3410. The MSP 34x0D offers a powerful feature to calculate the carrier field strength which can be used for automatic standard detection (terrestrial) and search algorithms (satellite). 7. SOUND OUTPUT STAGE TDA2614/TDA2615 TDA2614 is used as the AF output amplifier for mono applications. It is supplied by ±12VDC coming from a separate winding in the SMPS transformer. An output power of 6W (THD=0.5%) can be delivered into an 8ohm load. TDA2615 is used as the AF output amplifier for stereo applications. It is supplied by ±12VDC coming from a separate winding in the SMPS transformer. An output power of 2*6W (THD=0.5%) can be delivered into an 8ohm load. 8. VERTICAL OUTPUT STAGE WITH TDA8357 The TDA8357J is a power amplifier circuit for use in 90° and 110° colour deflection systems for 25 to 200 Hz field frequencies, and for 4 : 3 and 16 : 9 picture tubes. The IC contains a vertical deflection output circuit, operating as a high efficiency class G system. The full bridge output circuit allows DC coupling of the deflection coil in combination with single positive supply voltages. 9. VIDEO OUTPUT AMPLIFIER TDA6107/08Q The TDA6107/08Q consists of three monolithic video output amplifiers. The amplifier can be seen as an operational amplifier with negative feedback. The advantage of negative feedback is that the amplifier characteristics do not play an important role up to certain frequencies. The internal flash diodes protect the amplifiers against flash over in the picture tube. The only protections required at the cathode outputs are a flash resistor and a spark gap. Furthermore, the device needs only one power supply voltage (Vdd). The TDA6107/08Q is provided with a black current data pin. Since TDA935X/6X/8X is used as drive device, no adjustments are required for gain and black setting, as the TDA935X/6X/8X has IČC white point adjustment and black current set-up. 10. 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 produces 115V for FBT input, ±14V for audio output IC, S+3.3, S+5V and 8V for TDA935X/6X/8X. 11. POWER FACTOR CORRECTION The MC33260 is a controller for Power Factor Correction preconverters meeting international standard requirements in electronic ballast and offline power conversion applications. Designed to drive a free frequency discontinuous mode, it can also be synchronized and in any case, it features very effective protections that ensure a safe and reliable operation. 12. SERIAL ACCESS CMOS 16K EEPROM 24C16 The 24C16 is a 16Kbit electrically erasable programmable memory (EEPROM), organised as 4 blocks of 256*16 bits. The memory is compatible with the IČC standard, two wire serial interface which uses a bi-directional data bus and serial clock. 13. CLASS AB STEREO HEADPHONE DRIVER TDA1308
The TDA1308 is an integrated class AB stereo headphone driver contained in a DIP8 plastic package
14. SAW FILTERS Saw filter type: G1984M: K2966M: K2962M: K2958M: K2962M: L9653M: K6259K: G3962M: G9353M: K3958M: K9356M: K9656M: K6263K: K9652M: K3958M: K9356M: M1962M: M3953M: M9370M: Model: PAL B/G MONO PAL SECAM B/G/D/K/I MONO PAL-I MONO PAL-SECAM B/G-D/K (38) MONO PAL-SECAM B/G/D/K/I/L/L' MONO SECAM L/L' AM MONO (AUDIO IF) PAL-SECAM B/G-D/K-I-M/N (EURO) MONO (10 PIN) PAL-SECAM B/G STEREO (VIDEO IF) PAL-SECAM B/G STEREO (AUDIO IF) PAL-SECAM B/G/D/K/I/L/L' STEREO (VIDEO IF) PAL-SECAM B/G/D/K/I STEREO (AUDIO IF) PAL-SECAM B/G/D/K/I/L/L' STEREO (AUDIO IF) PAL-SECAM B/G-D/K-I-M/N STEREO (VIDEO IF 10 PIN) PAL-SECAM B/G-D/K-I-M/N STEREO (AUDIO IF) PAL I NICAM (VIDEO IF) PAL I NICAM (AUDIO IF) PAL M/N NTSC M MONO PAL M/N NTSC M STEREO (VIDEO IF) PAL M/N NTSC M STEREO (AUDIO IF)
IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM
· TDA935X/6X/8X · TUNER (UV1315, UV1316, UV1336) · TEA6415C · TDA9830 · TDA2614/2615 · TDA8357 · TDA6107/08Q · MC44608 · MC33260 · MSP34X0D · 24C16 · TDA1308 · SAW FILTERS G1984M, K2966M, K2958M, K2962M, L9653M, K6259K, G3962M, G9353M, K3958M, K9356M, K9656M, K6263K, K9652M, M1962M, M3953M, M9370M
TDA935X/6X/8X FEATURES TV-signal processor · Multi-standard vision IF circuit with alignment-free PLL demodulator · Internal (switchable) time-constant for the IF-AGC circuit · A choice can be made between versions with mono intercarrier sound FM demodulator and versions with QSS IF amplifier. · The mono intercarrier sound versions have a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of this system is such that the external band-pass filters can be omitted. · Source selection between `internal' CVBS and external CVBS or Y/C signals · Integrated chrominance trap circuit · Integrated luminance delay line with adjustable delay time · Asymmetrical `delay line type' peaking in the luminance channel · Black stretching for non-standard luminance signals · Integrated chroma band-pass filter with switchable centre frequency · Only one reference (12 MHz) crystal required for the ”-controller, Teletext- and the colour decoder · PAL/NTSC or multi-standard colour decoder with automatic search system · Internal base-band delay line · RGB control circuit with `Continuous Cathode Calibration', white point and black level off-set adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently. · Linear RGB or YUV input with fast blanking for external RGB/YUV sources. The Text/OSD signals are internally supplied from the ”-controller/Teletext decoder · Contrast reduction possibility during mixed-mode of OSD and Text signals · Horizontal synchronisation with two control loops and alignment-free horizontal oscillator · Vertical count-down circuit · Vertical driver optimized for DC-coupled vertical output stages · Horizontal and vertical geometry processing ”-Controller · 80C51 ”-Controller core standard instruction set and timing · 1 ms machine cycle · 32 - 128Kx8-bit late programmed ROM · 3 - 12Kx8-bit Auxiliary RAM (shared with Display and Acquisition) · Interrupt controller for individual enable/disable with two level priority · Two 16-bit Timer/Counter registers · Watchdog timer · Auxiliary RAM page pointer · 16-bit Data pointer · IDLE and Power Down (PD) mode · 14 bits PWM for Voltage Synthesis Tuning · 8-bit A/D converter · 4 pins which can be programmed as general I/O pin, · ADC input or PWM (6-bit) output
Data Capture · Text memory for 1 or 10 pages · Data Capture for US Closed Caption · Real-time capture and decoding for WST Teletext in Hardware, to enable optimized mprocessor throughput · Automatic detection of FASTEXT transmission · Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters · Signal quality detector for video and WST/VPS data types Display · Teletext and Enhanced OSD modes · Features of level 1.5 WST and US Close Caption · Serial and Parallel Display Attributes · Single/Double/Quadruple Width and Height for characters · Scrolling of display region · Variable flash rate controlled by software · Enhanced display features including overlining, underlining and italics · Globally selectable scan lines per row (9/10/13/16) and character matrix [12x10, 12x13, 12x16 (VxH)] · Cursor · Special Graphics Characters with two planes, allowing four colours per character · 32 software redefinable On-Screen display characters · 4 WST Character sets (G0/G2) in single device (e.g. Latin, Cyrillic, Greek, Arabic) · WST Character sets and Closed Caption Character set in single device FUNCTIONAL DIFFERENCES BETWEEN IC VERSIONS
IC Version (TDA) Mono Intercarrier multi-standard sound demodulator (4.56.5 MHz) with switchable centre frequency. Audio Switch Automatic Volume Levelling QSS Sound IF amplifier with separate input and AGC circuit PAL Decoder SECAM Decoder NTSC Decoder ROM Size User RAM size Teletext Closed Captioning 64K 1K 1 page 64K 1K 1 page 128K 2K 10 page 128K 2K 10 page 64K 1K 9351 9352 9361 9367 9381
TDA935X/6X/8X PINNING DIAGRAM
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 SYMBOL P1.3/T1 P1.6/SCL P1.7/SDA P2.0/TPWM P3.0/ADC0 P3.1/ADC1 P3.2/ADC2 P3.3/ADC3 VSSC/P P0.5 P0.6 VSSA SECPLL VP2 DECDIG PH2LF PH1LF GND3 DECBG AVL/EWD (1) VDRB VDRA IFIN1 IFIN2 IREF VSC TUNERAGC AUDEEM/SIFIN1 (1) DECSDEM/SIFIN2 (1) GND2 AVL/REF0/AMOUT (1) AEXT/QSSO/AMOUT(1) HOUT FBISO SNDPLL/SIFAGC (1) EHTO PLLIF IFVO/SVO VP1 CVBSINT GND1 CVBS/Y CHROMA AUDOUT /AMOUT (1) INSSW2 R2/VIN G2/YIN B2/UIN BCLIN BLKIN RO GO BO VDDA VPE VDDC DESCRIPTION port 1.3 or Counter/Timer 1 input port 1.6 or I 2 C-bus clock line port 1.7 or I 2 C-bus data line port 2.0 or Tuning PWM output port 3.0 or ADC0 input port 3.1 or ADC1 input port 3.2 or ADC2 input port 3.3 or ADC3 input digital ground for m-Controller core and periphery port 0.5 (8 mA current sinking capability for direct drive of LEDs) port 0.6 (8 mA current sinking capability for direct drive of LEDs) analog gnd of Teletext decoder and digital ground of TV-processor SECAM PLL decoupling 2 nd supply voltage TV-processor (+8V) decoupling digital supply of TV-processor phase-2 filter phase-1 filter ground 3 for TV-processor bandgap decoupling Automatic Volume Levelling /East-West drive output vertical drive B output vertical drive A output IF input 1 IF input 2 reference current input vertical sawtooth capacitor tuner AGC output audio deemphasis or SIF input 1 decoupling sound demodulator or SIF input 2 ground 2 for TV processor AVL /subcarrier reference output /AM output (non controlled) Ext. audio In. /QSS intercarrier out /AM Audio out. (non controlled) horizontal output flyback input/sandcastle output narrow band PLL filter /AGC sound IF EHT/overvoltage protection input IF-PLL loop filter IF video output / selected CVBS output main supply voltage TV-processor (+8 V) internal CVBS input ground 1 for TV-processor external CVBS/Y input chrominance input (SVHS) audio output /AM audio output (volume controlled) 2 nd RGB / YUV insertion input 2 nd R input / V (R-Y) input 2 nd G input / Y input 2 nd B input / U (B-Y) input beam current limiter input/V-guard input black current input Red output Green output Blue output analog supply of Txt decoder and digital supply of TV-proc. (3.3 V) OTP Programming Voltage digital supply to core (3.3 V)
57 58 59 60 61 62 63 64
OSCGND XTALIN XTALOUT RESET VDDP P1.0/INT1 P1.1/T0 P1.2/INT0
oscillator ground supply crystal oscillator input crystal oscillator output reset digital supply to periphery (+3.3 V) port 1.0 or external interrupt 1 input port 1.1 or Counter/Timer 0 input port 1.2 or external interrupt 0 input
Block diagram TDA935X/6X/8X with mono intercarrier sound demodulator
Block diagram TDA935X/6X/8X with QSS IF sound channel UV1315, UV1316, UV1336 General description of UV1315: The UV1315 tuner belongs to the UV 1300 familiy 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'. Features of UV1315: · Member of the UV1300 family small sized UHF/VHF tuners · Systems CCIR:B/G, H, L, L', I and I'; OIRT:D/K · Voltage synthesized tuning (VST) · Off-air channels, S-cable channels and Hyperband · Standardized mechanical dimensions and pinning PINNING
1. 2. 3. Gain control voltage (AGC) Tuning voltage High band switch
PIN VALUE
:4.0V, Max:4.5V :5V, Min:4.75V, Max:5.5V
4. 5. 6. 7. 8. 9. 10. 11.
Mid band switch Low band switch Supply voltage Not connected Not connected Not connected Symmetrical IF output 1 Symmetrical IF output 2
:5V, Min:4.75V, Max:5.5V :5V, Min:4.75V, Max:5.5V :5V, Min:4.75V, Max:5.5V
Bandswitching table: Low band Mid band High band Pin 3 0V 0V +5V Pin 4 0V +5V 0V Pin 5 +5V 0V 0V
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'.. Features of UV1316: · Member of the UV1300 family small sized UHF/VHF tuners · Systems CCIR: B/G, H, L, L', I and I'; OIRT: D/K · Digitally controlled (PLL) tuning via IČC-bus · Off-air channels, S-cable channels and Hyperband · World standardized mechanical dimensions and world standard pinning · Complies to "CENELEC EN55020" and "EN55013" PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Gain control voltage (AGC) Tuning voltage IČC-bus address select IČC-bus serial clock IČC-bus serial data Not connected PLL supply voltage ADC input Tuner supply voltage Symmetrical IF output 1 Symmetrical IF output 2
PIN VALUE
:4.0V, Max:4.5V :Max:5.5V :Min:-0.3V, Max:5.5V :Min:-0.3V, Max:5.5V :5.0V, Min:4.75V, Max:5.5V :33V, Min:30V, Max:35V
General description of UV1336: UV1336 series is developed for reception of channels broadcast in accordance with the M, N standard. Features of UV1336: · Global standard pinning · Integrated Mixer-Oscillator&PLL function · Conforms to CISPR 13, FCC and DOC (Canada) regulations
· ·
Low power consumption Both Phono connector and `F' connector are available PIN VALUE
:4.0V, Max:4.5V Max:5.5V :Min:-0.3V, Max:5.5V :Min:-0.3V, Max:5.5V :5.0V, Min:4.75V, Max:5.5V :33V, Min:30V, Max:35V
PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Gain control voltage Tuning voltage Address select Serial clock Serial data Not connected Supply voltage ADC input (optional) Tuning supply voltage Ground IF output
TEA6415C General Description: The main function of the TEA6415C is to switch 8 video input sources on the 6 outputs. Each output can be switched to only one of the inputs whereas but any same input may be connected to several outputs. All switching possibilities are controlled through the IČC-bus. Features of TEA6415C: · 20 MHz Bandwith · Cascadable with another TEA6415C (Internal address can be changed by pin 7 voltage) · 8 inputs (CVBS, RGB, Mac, CHROMA, ...) · 6 Outputs · Bus controlled · 6.5dB gain between any input and output · -55dB cross-talk at 5MHz · Fully ESD protected PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Input Data Input Clock Input Input Prog Input Vcc Input Input Ground Output Output Output Output
PIN VALUE
:Max:2Vpp, Input Current:1”A, Max:3”A :Low level:-0.3V Max:1.5V, High level:3.0V Max:Vcc+0.5V :Max:2Vpp, Input Current:1”A, Max:3”A :Low level:-0.3V Max:1.5V, High level:3.0V Max:Vcc+0.5V :Max:2Vpp, Input Current:1”A, Max:3”A :Max:2Vpp, Input Current:1”A, Max:3”A :Max:2Vpp, Input Current:1”A, Max:3”A :12V :Max:2Vpp, Input Current:1”A, Max:3”A :Max:2Vpp, Input Current:1”A, Max:3”A :5.5Vpp, Min:4.5Vpp :5.5Vpp, Min:4.5Vpp :5.5Vpp, Min:4.5Vpp :5.5Vpp, Min:4.5Vpp
17. 18. 19. 20.
Output Output Ground Input
:5.5Vpp, Min:4.5Vpp :5.5Vpp, Min:4.5Vpp :Max:2Vpp, Input Current:1”A, Max:3”A
TDA9830 General description: The TDA9830, a monolithic integrated circuit, is designed for AM-sound demodulation used in Land L'-standard. Features: · Adjustment free wideband synchronous AM demodulator · Audio source-mute switch (low noise) · Audio level according EN50049 · 5 to 8V power supply or 12 V alternative · Low power consumption PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Sound IF differential input signal Not connected AGC capacitor REF voltage filtering capacitor Not connected AM demodulator output Input signal (from AM) to audio switch Output signal from audio switch Input signal (from external) to audio switch Switch input select control Supply voltage Mute control Ground Supply voltage Not connected Sound IF differential input signal
PIN VALUE
:Minimum/Maximum IF input signal: 60”V/120mV typ.
:THD:0.8%, Max:2%; S/N:53 dB typ. DC potential:2.15V typ. :Max:1.2V :80dB :Max:1.2V :0V-0.8V pin 7 1.5V-Vp pin 9 :12V, Min:10.8V, Max:13.2V :Mute-ON: 0V-0.8V Mute-OFF: 1.5V-Vp :Min:4.5V, Max:8.8V :See pin 1
TDA2614/TDA2615 General Description of TDA2614: The TDA2614 is a 6W single line power amplifier. It is used for sound amplification at mono TV sets. Features: · Requires very few external components · No switch-on/switch-off clicks · Input mute during switch-on and switch-off · Hi-fi in accordance with IEC 268 and DIN 45500 · Mute possibility
PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. Not connected Mute input Ground Not connected Supply voltage (negative) Output Supply voltage (positive) Inverting input (Ground) Non-inverting input
PIN VALUE
:300”A (For mute to activate) :-12VDC :6.9Vrms :+12VDC :0V :700mVrms, Min:500mVrms, Max:900mVrms
General Description of TDA2615: The TDA2615 is a 2x6 Watt dual power amplifier. It is used for sound amplification at stereo TV sets. Features: · Requires very few external components · No switch-on/switch-off clicks · Input mute during switch-on and switch-off · Excellent gain balance of both amplifiers · Hi-fi in accordance with IEC 268 and DIN 45500 · Mute possibility PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. Non-inverting input 1 Mute input Ground Output 1 Supply voltage (negative) Output 2 Supply voltage (positive) Inverting inputs 1 and 2 (Ground) Non-inverting input 2
PIN VALUE
:700mVrms, Min:500mVrms, Max:900mVrms :300”A (For mute to activate) :6.9Vrms :-12VDC :6.9Vrms :+12VDC :0V :700mVrms, Min:500mVrms, Max:900mVrms
TDA8357 General Description: The TDA8357J is a power circuit for use in 90° colour deflection systems for 25 to 200 Hz field frequencies. The IC contains a vertical deflection output circuit, operating as a high efficiency class G system. The full bridge output circuit allows DC coupling of the deflection coil in combination with single positive supply voltages. The IC is constructed in a Low Voltage DMOS (LVDMOS) process that combines bipolar, CMOS and DMOS devices. DMOS transistors are used in the output stage because of absence of second breakdown. Features: · Few external components required · High efficiency fully DC coupled vertical bridge output circuit · Vertical flyback switch with short rise and fall times · Thermal protection circuit · Improved EMC performance due to differential inputs. · Vertical guard
PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. Input A Input B Supply voltage Output B Ground Flyback supply voltage Output A Guard output Feedback input
PIN VALUE
Min: 7.5V Max.: 18V Iout 2Ap-p during scan 1.2Ap-p during flyback Min.: 2Vp Max.: 68V
TDA6107/08Q General Description: The TDA6107/08Q includes three video output amplifiers in a SIL 9 MP (Single In Line 9 pins Medium Power) package SOT111BE, using high-voltage DMOS technology, and is intended to drive the three cathodes of a colour picture tube. In contrast to previous types of DMOS video amplifiers, all external resistors (Rf, Ri and Ra) are integrated, so the gain is fixed. To obtain maximum performance, the amplifier should be used with black-current control and mounted on the CRT panel. Features: · No external components, only the well known supply decoupling · Very simple application with a variety of colour decoders · Black-current measurement output for automatic black current stabilisation · Only one supply voltage needed · Internal protection against positive appearing CRT flash-over discharges · Protection against ESD · Internal reference voltage · Thermal protection · Controllable switch-off behaviour · Very small PCB dimensions · Very high replacement value PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. Inverting input 1 Inverting input 2 Inverting input 3 Ground BSC-output Supply voltage Cathode output 3 Cathode output 2 Cathode output 1
PIN VALUE
:2Vpp :2Vpp :2Vpp :Max:7V :200VDC :20mA, 100Vpp :20mA, 100Vpp :20mA, 100Vpp
MC44608 General description: The MC44608 is a high performance voltage mode controller designed for offline converters. This high voltage circuit that integrates the startup 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 standby management consisting of an effective Pulsed Mode operation. This technique enables the reduction of the standby power consumption to approximately 1W while delivering 300mW in a 150W SMPS. · Integrated startup current source · Lossless offline startup · Direct offline operation · Fast startup General Features · Flexibility · Duty cycle control · 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 V CC protection" against open loop · Programmable low inertia over voltage protection against open loop · Internal thermal protection GreenLine Controller · Pulsed mode techniques for a very high efficiency low power mode · Lossless startup · Low dV/dT for low EMI radiations PINNING
1. 2. 3. 4. 5. 6. 7. 8. Demagnetization I Sense Control Input Ground Driver Supply voltage No connection Line Voltage
PIN VALUE
Zero cross detection voltage: 50 mV typ. Over current protection voltage 1V typ. Min: 7.5V Max.: 18V Iout 2Ap-p during scan 1.2Ap-p during flyback Output resistor 8.5 Ohm sink 15 Ohm source typ. Max:16V (Operating range 6.6V-13V) Min:50V Max:500V
MSP34X0D The MSP 34x0D is designed to perform demodulation of FM or AM-Mono TV sound. Two kinds of MSP's are used. MSP 3400D and MSP 3410D. The MSP 3400D is fully pin and softwarecompatible to the MSP 3410D, but is not able to decode NICAM. It is also compatible to the MSP 3400C.
General description: Demodulator and NICAM Decoder Section The MSP 34x0D is designed to perform demodulation of FM or AM-Mono TV sound. Alternatively, two-carrier FM systems according to the German or Korean terrestrial specs or the satellite specs can be processed with the MSP 34x0D. Digital demodulation and decoding of NICAM-coded TV stereo sound, is done only by the MSP 3410. The MSP 34x0D offers a powerful feature to calculate the carrier field strength which can be used for automatic standard detection (terrestrial) and search algorithms (satellite). General Features · Two selectable analog inputs (TV and SAT-IF sources) · Automatic Gain Control (AGC) for analog IF input. Input range: 0.103 V pp · Integrated A/D converter for sound-IF inputs · All demodulation and filtering is performed on chip and is individually programmable · Easy realization of all digital NICAM standards (B/G, I, L, and D/K) with MSP 3410. · FM demodulation of all terrestrial standards (incl. identification decoding) · FM demodulation of all satellite standards · No external filter hardware is required · Only one crystal clock (18.432 MHz) is necessary · FM carrier level calculation for automatic search algorithms and carrier mute function DSP Section (Audio Baseband Processing) · Flexible selection of audio sources to be processed · Two digital input and one output interface via I 2 S bus for external DSP processors, featuring surround sound, ADR etc. · Digital interface to process ADR (ASTRA Digital Radio) together with DRP 3510A · Performance of all deemphasis systems including adaptive Wegener Panda 1 without external components or controlling · Digitally performed FM identification decoding and dematrixing · Digital baseband processing: volume, bass, treble, 5-band equalizer, loudness, pseudostereo, and basewidth enlargement · Simple controlling of volume, bass, treble, equalizer etc. Analog Section · four selectable analog pairs of audio baseband inputs (= four SCART inputs) input level: =<2 V RMS , input impedance: >=25 k · one analog mono input (i.e. AM sound): input level: =<2 V RMS , input impedance: >=15 k · two high-quality A/D converters, S/N-Ratio: >=85 dB · 20 Hz to 20 kHz bandwidth for SCART-to-SCART copy facilities 24C16 General description: The 24C16 is a 16Kbit electrically erasable programmable memory (EEPROM), organized as 4 blocks of 256 * 16 bits. The memory operates with a power supply value as low as 2.5V. Features:
· · · · · · ·
Minimum 1 million ERASE/WRITE cycles with over 10 years data retention Single supply voltage:4.5 to 5.5V Two wire serial interface, fully IČC-bus compatible Byte and Multibyte write (up to 8 bytes) Page write (up to 16 bytes) Byte, random and sequential read modes Self timed programming cycle PIN VALUE
:0V :0V :0V :0V :Input LOW voltage: :Input HIGH voltage: :Input LOW voltage: :Input HIGH voltage: :Input LOW voltage: :Input HIGH voltage: :Min:2.5V, Max:5.5V
PINNING
1. 2. 3. 4. 5. 6. 7. 8. Write protect enable Not connected Chip enable input Ground Serial data address input/output Serial clock Multibyte/Page write mode Supply voltage
Min:-0.3V, Max:0.3*Vcc Min:0.7*Vcc, Max:Vcc+1 Min:-0.3V, Max:0.3*Vcc Min:0.7*Vcc, Max:Vcc+1 Min:-0.3V, Max:0.5V Min:Vcc-0.5, Max:Vcc+1
TDA1308 Features: · Wide temperature range · Excellent power supply ripple rejection · Low power consumption · Short-circuit resistant · High performance · high signal-to-noise ratio · low distortion
PINNING
1. 2. 3. 4. 5. 6. 7. 8. Output A (Voltage swing) Inverting input A Non-inverting input A Ground Non-inverting input B Inverting input B Output B (Voltage swing) Positive supply
PIN VALUE
:Min:0.75V, Max:4.25V :Vo(clip):Min:1400mVrms :2.5V :0V :2.5V :Vo(clip):Min:1400mVrms :Min:0.75V, Max:4.25V :5V, Min:3.0V, Max:7.0V
SAW FILTERS G1984M, G3962M, G9353M,K2958M, K2962M,
K2966M, K3958M, K9356M, M1962M, M3953M, M9370M
PINNING 1. Input 2. Input-ground 3. Chip carrier-ground 4. Output 5. Output
K9652M, K9656M, L9653M
PINNING 1. Input 2. Switching Input 3. Chip carrier-ground 4. Output 5. Output
K6263K, K6259K
PINNING 1 Input 2 Input - Ground 3,8 Chip carrier-ground 4,5 Output 6,7 Not Connected 9 Free 10 Switching Input
AK32 CHASSIS MANUAL ADJUSTMENTS PROCEDURE
In order to enter the service menu, first enter the installation menu and then press the digits 4, 7, 2 and 5 respectively.
For Adjustment:
To select different adjust parameters, use UP or DOWN button. To change the selected parameter, use LEFT or RIGHT button. For the option bits "1" means option is active, "0" means option is not present and/or disabled. IF FREQUENCY SELECTION: This option is used for IF frequency selection of TDA935X/6X/8X.( 58.75, 45.75, 38.90 or 38.00 MHz) IF = IF frequency selection option EČPROM INITIALIZE: INIT CTVUOC VX.XX = EČEPROM initialize option This option is used for empty EČEPROM. (After this operation service adjustments are set to default values and must be checked and for current options) S-DELAY The step delay for VST tuning. It can be adjusted between 0-3. S-SIZE The step size for VST tuning. It can be adjusted between 0-3. Increasing stepsize value in Service menu results in bigger tuning steps. TUNER BAND SWITCHING(For PLL Tuners) This option is used for PLL tuners band switching point adjustments. TBH TBM TBL TEHA TSH TEM TSM TEL TSL Value needed for switching to the high-band Value needed for switching to the mid-band Value needed for switching to the low-band End frequency of the high-band Start frequency of the high-band End frequency of the mid-band Start frequency of the mid-band End frequency of the low-band Start frequency of the low-band in MHz
TUNER MODEL PHILIPS UV1316MK2 PHILIPS UV1316MK3 ALPS TEDE9-004A ALPS TEDE9X226A SAMSUNG TEXX2949PG28B SAMSUNG TECC2949PG35B THOMSON CTT5020 OPTIONS Op1 PBG PDK P-I P-M P-N NTSC-M NTSC-4 S-BG Op2 S-DK FRANCE Tn3Bands AV2 AV2S AV3 AV3S Op3 Cursor DBE HP Volbar Presets Lock Hotel Op4
TBL A1 01 01 01 01 01 03
TBM 92 02 02 02 02 02 06
TBH 34 04 08 08 08 08 85
TSL 45 45 45 45 45 45 45
TEL/ TEM/ TSM TSH TEHA 156 440 890 156 440 890 149 424 890 180 464 890 170 465 890 170 449 890 114 400 890
Pal BG on/off Pal DK on/off Pal I on/off Pal M on/off Pal N on/off NTSC M on/off NTSC 443 on/off SECAM BG on/off Secam DK on/off Secam L/L' on/off 3 Band Tuner Selection "1"= 3 Band Tuner is used Not Used AV2 option on/off AV2S option on/off AV3 option on/off AV3 SVHS option on/off "1" Volume up&down keys only work as volume control "0" Volume up&down keys work as cursor keys in menus and in normal condition (menus inactive) work as volume control Dynamic Bass Enhancement. In Stereo Models only. "1"=DBE Present Stereo headphone option present/not present Volume bar indicator on/off Not Used Four adjustable picture setting presets, allows rapid change of picture settings by PP button on/off Child lock on/off Hotel TV mode on/off
16:9 P-MODE Hpol Vpol Field FE-Out VG-Check Op5 AVL TUR FMWS STM FRF Op6 MESHED BACKON E/W X-prot C-mute
"0" 4:3 Tube size "1" 16:9 tube size "0" User zoom menu off "1" User zoom menu on Horizontal sync. polarity selection (Should be 0) Vertical sync. polarity selection (Should be 0) Field selection "0" Odd field "1" Even Field. "0": FE muted in AV mode "1": FE video avalible during AV mode. Not Used "0" Vertical guard checking off "1" Vertical guard checking on Not Used Not Used Automatic Volume Limiting Not Used "1" Turkish Language enabled "0" Turkish not available/disabled Window selection of sound PLL. "0" Small window "1" Large window Search tuning mode. "0" Normal search "1" Reduced sensitivity search Forced Field Frequency. Frequency selection when no signal is present. "0": 60Hz "1": 50Hz. Not Used Not Used Not Used "1" Transparent menu if menu background is on. "0" Menu background off "1" Menu background on "0" West Europe character set used for Teletext "1" East Europe character set used for Teletext "0" X-ray protection off "1" X-ray protection on "0" Sound muted if sound carrier frequency is not correct. (Stereo only) "1" Sound not muted if sound carrier frequency is not correct. (Stereo only)
MAXIMUM VOLUME OUTPUT LIMITING This option limits the maximum volume output. VOLM = Maximum volume 3F POWER-UP MODE SELECTION This option is used for standby to normal mode transition logic. POW = S-by TV set is in Stand-by mode when turned on. POW = L-stat Last status of TV is remembered when TV set is turned on. (If Tv is switched off directly from power, It will turn on directly when power is applied) TUNING MODE SELECTION FREQ= T-Bar Tuning bar is displayed in Tuning menu. (Default mode for VST models) FREQ= Freq Tuning frequency is displayed in Tuning menu. (PLL tuner option) FREQ= Ch Channel number is displayed in Tuning menu. (PLL tuner option) CONFIGURATION BITS
AVL BKS ACL FIF DSA BCO OSO FCO
"1" AVL ON "0" AVL OFF Black Strech enable Automatic colour limiting enable Fast filter IF. Fast time constant when set, normal when clear Dynamic skin control angle, 123° when clear, 117° when set. Switch-on behaviour. When set switch-on picture via internal delay, no delay when clear. When set, switch-off in vertical overscan, undefined when clear. Forced Colour On. When clear normal colour killing function. When set no colour killing (in forced system mode only).
OSD BRIGTNESS & POSITION RGB-B H-POS CL Adjusts the brightness of OSD menu. "0" for lowest, "8" for highest brightness. This parameter is used for OSD menu position adjustment. Cathode drive level. Higher values give higher tube contrast
LUMINANCE DELAY ADJUSTMENT: Yo = Y-Delay Other In case of other colour systems, enter this system with colour and black-white bar test pattern via RF. Adjust Y-Delay Other till the colour transients on the colour bar of the pattern become as sharper and colours between transients do not mix with each other as possible. Normally for an equal delay of the luminance and chrominance signal the delay must be set at a value of 160nS. This means the adjustment must be set to 8. Yp = Y-Delay PAL Enter a PAL B/G colour and black-white bar test pattern via RF. Adjust Y-Delay PAL till the colour transients on the colour bar of the pattern become as sharper and colours between transients do not mix with each other as possible. Yn = Y-Delay NTSC Enter an NTSC colour and black-white bar test pattern via RF. Adjust Y-Delay NTSC till the colour transients on the colour bar of the pattern become as sharper and colours between transients do not mix with each other as possible. Ys = Y-Delay SECAM Enter a SECAM B/G colour and black-white bar test pattern via RF. Adjust Y-Delay SECAM till the colour transients on the colour bar of the pattern become as sharper and colours between transients do not mix with each other as possible.
Note:
For an equal delay of the luminance and chrominance signal the delay must be set at a value of 160 ns. This is only valid for a CVBS signal without group delay distortions. Setting Y-delay value to 8 gives 160 ns delay WHITE BALANCE ADJUSTMENT: The following three parameters are used to make white balance adjustment. To do this, use a Colour Analyser. Using white point RED, white point GREEN and white point BLUE parameters, insert the + sign in the square which is in the middle of the screen. WR = White Point RED WG = White Point GREEN WB = White Point BLUE TC4 CPL4 CPU4 PW4 Not used. Reserved for 110° tube applications. Not used. Reserved for 110° tube applications. Not used. Reserved for 110° tube applications. Not used. Reserved for 110° tube applications.
16:9 VERTICAL AMPLITUDE ADJUSTMENT: VA16 = 16:9 Vertical Amplitude Enter a 16:9 universal test pattern via RF. Change vertical amplitude till the circle at the centre of the picture tube is completely. Check and readjust VERTICAL AMPLITUDE item if the adjustment becomes improper after some other geometric adjustments are done. TC16 CPL16 CPU16 PW16 EW16 Not used. Reserved for 110° tube applications. Not used. Reserved for 110° tube applications. Not used. Reserved for 110° tube applications. Not used. Reserved for 110° tube applications. Not used. Reserved for 110° tube applications.
S-CORRECTION ADJUSTMENT: SC = 4:3 S-Correction Enter a CROSS-HATCH B/G test pattern via RF. Change S-correction till the size of squares on both the upper and lower part of test pattern become equal to the squares laying on the vertical centre of the test pattern. Check and readjust S-Correction item if the adjustment becomes improper after some other geometric adjustments are done.
VERTICAL SHIFT ADJUSTMENT: VSH= 4: 3 Vertical Shift Enter a PAL B/G test pattern via RF. Change Vertical Shift till the test pattern is vertically centred, i.e. horizontal line at the centre pattern is in equal distance both to upper and lower side of the picture tube. Check and readjust Vertical Shift item if the adjustment becomes improper after some other geometric adjustments are done. Vg2 ADJUSTMENT VSD = Vertical scan disable When active, pressing left or right button turns off vertical scan signal so that Vg2 (screen) alignment can be done. Disable this function by pressing left or right button before proceeding to other adjustments. Another way to activate this function any time is to press YELLOW remote key in service mode. Press YELLOW button again to deactivate VSD function. 4:3 VERTICAL AMPLITUDE ADJUSTMENT: VA4 = 4:3 Vertical Amplitude Enter a PAL B/G test pattern via RF. Change vertical amplitude till horizontal black lines on both the upper and lower part of the test pattern become very close to the upper and lower horizontal sides of picture tube and nearly about to disappear. Check and readjust VERTICAL AMPLITUDE item if the adjustment becomes improper after some other geometric adjustments are done. VERTICAL SLOPE ADJUSTMENT: VS= 4:3 Vertical Slope Enter a PAL B/G test pattern via RF. When VS is active, bottom half of the picture tube will be blanked. Change vertical slope till the half of the pattern become equal to the intersection of the blanked side. Check and readjust VERTICAL SLOPE item if the adjustment becomes improper after some other geometric adjustments are done. BLE Black level offset adjustment. 8=No offset.
HBO Horizontal bow adjustment. 32=No Correction. HPA Horizontal parallelogram adjustment. 32=No Correction. HORIZONTAL SHIFT ADJUSTMENT: HSH= 4:3 Horizontal Shift Enter a PAL B/G test pattern via RF. Change horizontal shift till the picture is horizontally centred. Check whether this adjustment is correct after completing Service Mode Adjustment. AGC ADJUSTMENT: AG = AGC adjustment. Apply a 1mVrms RF signal to the aerial input of the tuner. Increase/Decrease by the arrow keys the take over setting such that the voltage at the tuner output pin 27 drops 1V below its maximum voltage. IFL1 IF for SECAM-L1 selection. (33.40 or 33.90 MHz)
GEOMETRY ADJUSTMENTS PROCEDURE: Tv geometry adjustments should be done with the following order. 1-) VSD =Vertical Scan Disable (Screen Adjustment) 2-) HSH = Horizontal Shift 3-) VS = 4:3 Vertical Slope 4-) VSH = Vertical Shift 5-) VA4 = 4:3 Vertical Amplitude 6-) SC = 4:3 S-Correction 7-) VA16 = 16:9 Vetical Amplitude
GENERAL BLOCK DIAGRAM OF CHASSIS 11AK32
PLL/VST TUNER UV1315/1316
STEREO SOUND MSP 34X0D/G
IF
L R AUDIO AMPLIFIER TDA 2614/2615 RGB AMPLIFIER TDA 6107/8 MONO
I2C QSS SERVICE CONNECTOR NVM KEYPAD IR SENSOR
HEADPHONE OUTPUT
TDA 93XX VIDEO PROCESSOR & ”CONTROLLER
VERTICAL AMPLIFIER TDA 8357
CRT
SMPS MC 44608
115V +12V Audio -12V Audio +12V +8V +5V +5V St-by +3.3V St-by
VIDEO SWITCH TEA 6415
HV
HORIZONTAL DRIVE
SCART1
SCART2
FAV/BAV
FBT
SVHS