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CONTENTS SAFETY PRECAUTIONS: .......................................................................................................................................2 TV set switched off ................................................................................................................................................2 Measurements........................................................................................................................................................2 PERI-TV SOCKET....................................................................................................................................................2 SCART 1 ...............................................................................................................................................................2 SCART 2 ...............................................................................................................................................................2 1. INTRODUCTION .................................................................................................................................................3 2. SMALL SIGNAL PART WITH STV2248 ........................................................................................................3 2.1 Vision IF amplifier...........................................................................................................................................3 2.2 QSS Sound circuit (QSS versions)....................................................................................................................3 2.3 FM demodulator and audio amplifier (mono versions)......................................................................................3 2.4 Video switch ....................................................................................................................................................4 2.5 Synchronisation circuit.....................................................................................................................................4 2.6 Chroma and luminance processing ...................................................................................................................4 2.7 RGB output circuit ...........................................................................................................................................5 2.8 µ-Controller .....................................................................................................................................................5 3. TUNER .................................................................................................................................................................6 4- MULTISTANDARD SOUND PROCESSOR.........................................................................................................7 5. SOUND OUTPUT STAGE TDA7269A.................................................................................................................7 6. VERTICAL OUTPUT STAGE WITH STV9306....................................................................................................7 7. VIDEO OUTPUT AMPLIFIER STV5112..............................................................................................................7 8. POWER SUPPLY (SMPS).....................................................................................................................................7 9. POWER FACTOR CORRECTION........................................................................................................................7 10. SERIAL ACCESS CMOS 8K EEPROM 24C08...................................................................................................7 11. CLASS AB STEREO HEADPHONE DRIVER TDA1308 ...................................................................................7 12. CLASS AB MONO SUBWOOFER DRIVER TDA7261 ......................................................................................7 13. SAW FILTERS....................................................................................................................................................7 14. IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM...............................................................................8 · ST92195 .......................................................................................................................................................8 · STV224X....................................................................................................................................................10 · UV1315, UV1316, UV1336 ........................................................................................................................11 · TDA7269A .................................................................................................................................................12 · STV9306 ....................................................................................................................................................13 · STV5112 ....................................................................................................................................................14 · MC44608....................................................................................................................................................15 · MSP 34XXG...............................................................................................................................................16 · 24C08 .........................................................................................................................................................17 · TDA1308....................................................................................................................................................17 · TDA7261....................................................................................................................................................17 · SAW FILTERS ...........................................................................................................................................18 GENERAL BLOCK DIAGRAM of 11AK37 ...........................................................................................................19 Service menu ..........................................................................................................................................................20 Options....................................................................................................................................................................21 Languages ...............................................................................................................................................................24
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DO NOT CHANGE ANY MODULE UNLESS THE SET IS SWITCHED OFF The mains supply part of the switch mode power supply' transformer is live. s Use an isolating transformer. The receiver complies with the safety requirements. SAFETY PRECAUTIONS: The service of this TV set must be carried out by qualified persons only. 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 fused resistors must be mounted in an identical manner to the original component. TV set switched off: Make short-circuit between HV-CRT clip and CRT ground layer. Short C809 before changing IC800 and IC801 or other components in primary side of the SMPS part. Measurements: Voltage readings and oscilloscope traces are measured under the following conditions: Antenna signal' level is 60dB at the color bar pattern from the TV pattern generator. (100% white, s 75% color saturation) Brightness, contrast, and color are adjusted for normal picture performance. Mains supply, 220VAC, 50Hz. PERI-TV SOCKET
SCART 1 PINING SCART 2 PINING
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 Green input 12 13 Ground Red 14 Ground Blanking 15 Red input 16 Blanking input 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 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 0.7Vpp / 75ohm 0-12VDC /10K
0.5Vrms / 10K 0-12VDC /10K
0.7Vpp / 75ohm
0.7Vpp / 75ohm 0-0.4VDC, 1-3VDC / 75 Ohm
1Vpp / 75ohm 1Vpp / 75ohm
1Vpp / 75ohm 1Vpp / 75ohm
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1. INTRODUCTION 11AK37 is a 110° chassis capable of driving 25", 28", 29", 33" 4:3 and 28", 32" 16:9 tubes at the appropriate currents. The chassis is capable of operating in PAL, SECAM and NTSC standards and multiple transmission standards as B/G, D/K, I/I' and L/L´. standards. The sound system is capable , of giving 12 watts RMS output into a load of 8 ohms. One page, 7 page SIMPLETEXT, TOPTEXT, FASTTEXT and US Closed Caption is also provided. The chassis is equipped with a double-deck 42 pin scart connector for AV input/output, front-AV input, one back-AV output, one SVHS, one headphone and one subwoofer. 2. SMALL SIGNAL PART WITH STV2248: STV2248 video processor is essential for realizing all small signal functions for a color TV receiver. 2.1 Vision IF amplifier The vision IF amplifier can demodulate signals with positive and negative modulation. The PLL demodulator is completely alignment-free. Although the VCO (Toko-coil) of the PLL circuit is external, yet the frequency is fixed to the required value by the original manufacturer thus the Toko-coil does not need to be adjusted manually. The setting of the various frequencies (38.9 or 45.75 MHz) can be made via changing the coil itself. 2.2 QSS Sound circuit (QSS versions) The sound IF amplifier is similar to the vision IF amplifier and has an external AGC de-coupling capacitor. The single reference QSS mixer is realised by a multiplier. In this multiplier the SIF signal is converted to the inter-carrier 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 via the volume control. The AM demodulated signal results from multiplying the input signal by itself, it is available on AM/FM output. 2.3 FM demodulator and audio amplifier (mono versions): The FM demodulator is realized 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 constant input signal amplitude are required. For this reason the inter-carrier 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 that uses the clock frequency of the µ-controller/Teletext decoder as a reference. The setting to the wanted frequency is realized 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 realized by means of a software loop that alternate the demodulator to various frequencies, then select the frequency on which a lock condition has been found. De-emphasis 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 de-emphasis pin is automatically muted. The audio control circuit contains an audio switch and volume control.
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In the mono inter-carrier sound versions the Automatic Volume Leveling (AVL) function can be activated. The pin to which the external capacitor has to be connected depends on the IC version. 2.4 Video switching The video processor (STV2248C) has three CVBS inputs and two RGB inputs. The first CVBS input is used for external CVBS from SCART 1, the second is used for either CVBS or Y/C from either SCART2 or BAV/FAV or SVHS, and the third one is used for internal video. The selection between both external video inputs signals is realized by means of software and hardware switches. 2.5 Synchronization circuit The video processor (STV224X) performs the horizontal and vertical processing. The external horizontal deflection circuit is controlled via the Horizontal output pulse (HOUT). The vertical scanning is performed through an external ramp generator and a vertical power amplifier IC controlled by the Vertical output pulse (VOUT). The main components of the deflection circuit are: · PLL1: the first phase locked loop that locks the internal line frequency reference on the CVBS input signal. It is composed of an integrated VCO (12 MHz) that requires the chroma reference frequency (4.43MHz or 3.58MHz crystal oscillator reference signal), a divider by 768, a line decoder, and a phase comparator. · PLL2: The second phase locked loop that controls the phase of the horizontal output (Compensation of horizontal deflection transistor storage time variation). Also the horizontal position adjustment is also performed in PLL2. · A vertical pulse extractor. · A vertical countdown system to generate all vertical windows (vertical synchronization window, frame blanking pulses, 50/60Hz identification window...). · Automatic identification of 50/60Hz scanning. · PLL1 time constant control. · Noise detector, video identification circuits, and horizontal coincidence detector. · Vertical output stage including de-interlace function, vertical position control. · Vertical amplitude control voltage output (combined with chroma reference output and Xtal 1 indication). 2.6 Chroma and luminance processing: The chroma decoder is able to demodulate PAL, NTSC and SECAM signals. The decoder dedicated to PAL and NTSC sub-carrier is based on a synchronous demodulator, and an Xtal PLL locked on the phase reference signal (burst). The SECAM demodulation is based on a PLL with automatic calibration loop. The color standard identification is based on the burst recognition. Automatic and forced modes can be selected through the I 2C bus. NTSC tint, and auto flesh are controlled through I 2C bus. Xtal PLL can handle up to 3 crystals to work in PAL M, PAL N and NTSC M for South America. ACC an ACC overload control the chroma sub-carrier amplitude within 26dB range. Both ACC s are based on digital systems and do not need external capacitor. All chroma filters are fully integrated and tuned via a PLL locked on Xtal VCO signal. A second PLL is used for accurate fine-tuning of the SECAM bell filter. This tuning is achieved during the frame blanking. An external capacitor memorizes the bell filter tuning voltage. A base-band chroma delay-line rebuilds the missing color line in SECAM and removes transmission phase errors in PAL. The base-band chroma delay line is clocked with 6MHz signal provided by the horizontal scanning VCO.
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The luminance processor is composed of a chroma trap filter, a luminance delay line, a peaking function with noise coring feature, a black stretch circuit. Trap filter and luminance delay lines are achieved with the use of bi-quad integrated filters, autoaligned via a master filter phase locked loop. 2.7 RGB output circuit: The video processor performs the R, G, B processing. There are three sources: 1. Y,U,V inputs (coming from luma part (Y output), and chroma decoder outputs (R-Y, B-Y outputs). 2. External R,G,B inputs from SCART (converted internally in Y,U,V), with also the possibility to input YUV signals from a DVD player, (YUV specification is Y=0.7 V PP , U= 0.7 V PP , V = 0.7V PP for 100% color bar). 3. Internal R,G,B inputs (for OSD and Teletext display) The main functions of the video part are: · Y,U,V inputs with integrated clamp loop, allowing a DC link with YUV outputs, · External RGB inputs (RGB to YUV conversion), or direct YUV inputs, · Y,U,V switches, · Contrast, saturation, brightness controls, · YUV to RGB matrix, · OSD RGB input stages (with contrast control), · RGB switches, · APR function, · DC adjustment of red and green channels, · Drive adjustments (R, G, B gain), · Digital automatic cut-off loop control, · Manual cut-off capability with I 2C adjustments, · Half tone, oversize blanking, external insertion detection, blue screen, · Blanking control and RGB output stages. 2.8 µ-Controller The ST92195 is the micro-controller, which is required for a color TV receiver. ST92195D1 is the version with one page Teletext and ST92195D7 is the one with 7 page Teletext. The IC has the supply voltages of 5 V and they are mounted in PSDIP package with 56 pins. µ-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.
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UV1316 (VHF/UHF) is used as a PLL tuner. For only PAL M/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: 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 S09 to S38 S39 to S41 69.25 to 154.25 161.25 to 439.25 447.25 to 463.25
BAND
Low Band Mid Band High Band
(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 Channel Coverage UV1336: BAND Low Band Mid Band High Band
CHANNELS FREQUENCY RANGE (MHz)
Gain Min. Typical Max. All channels : 38dB 44dB 52dB Gain Taper (of-air channels): 8dB
2 to D E to PP QQ to 69
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 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
Low Band Mid Band High Band
(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)
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4. MULTISTANDARD SOUND PROCESSOR The MSP 34xxG is designed to perform demodulation of FM or AM-Mono TV sound. Three kinds of MSP' are used: MSP 3400G,MSP 3410G and MSP 3411G. The MSP 3400G is fully pin and s software-compatible to the MSP 3410G, but is not able to decode NICAM. It is also compatible to the MSP 3411G,sound processor IC with virtual dolby sound. 5. SOUND OUTPUT STAGETDA7269A The TDA7269A is a class AB dual Audio power amplifier, specially designed for high quality sound applications as Hi-Fi music centers and TV sets. It is supplied by ±12VDC coming from two separate windings in the SMPS transformer.It gives 2x14W(THD=10%) output power into an 8ohm load. 6. VERTICAL OUTPUT STAGE WITH STV9306 The STV9306 is a fully I2C controlled vertical deflection IC designed for use in 110°, 4/3 or 16/9 CRT applications. It integrates both the vertical deflection and E/W correction circuitries necessary in design of a 110° chassis. 7. VIDEO OUTPUT AMPLIFIER STV5112 The STV5112 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 has a high voltage power supply (VDD) and a low voltage one (VCC). 8. 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 150V for FBT input, ±12V for audio output IC, +5V and +8V for ST92195. 9. POWER FACTOR CORRECTION Passive components are used for the solution of power factor correction. 10. SERIAL ACCESS CMOS 8K EEPROM 24C08 The 24C08 is a 8Kbit electrically erasable programmable memory (EEPROM), organized as 4 blocks of 256*08 bits. The memory is compatible with the I˛C standard, two wire serial interface which uses a bi-directional data bus and serial clock. 11. CLASS AB STEREO HEADPHONE DRIVER TDA1308 The TDA1308 is an integrated class AB stereo headphone driver contained in a DIP8 plastic package. 12. CLASS AB MONO SUBWOOFER DRIVER TDA7261 The TDA7261 is a class AB dual Audio power amplifier, specially designed for high quality sound applications in mono TV chassis. It is supplied by ±12VDC.
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13. SAW FILTERS Saw filter type: G1975M: K2966M: J1981 : K2958M: K2962M: L9653M: G3967M: G9353M: K3958M: K9356M: K9656M: 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 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 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
· ST92195 · STV224X · TUNER (UV1315, UV1316, UV1336) · TDA7269A · STV9306 · STV5112 · MC44608 · MSP 34XXG · 24C08 · TDA1308 · SAW FILTERS G1975M, K2966M, K2962M, L9653M, G3962M, G9353M, K3958M, K9356M, K9656M, K6263K, K9652M,M1962M, M3953M, M9370M
ST92195
The ST92195 is a member of the ST9+ family of micro-controllers, completely developed and produced by SGS-THOMSON Microelectronics using a proprietary n-well HCMOS process. The nucleus of the ST92195 is the advanced Core, which includes the Central Processing Unit (CPU), the ALU, the Register File and the interrupt controller. The Core has independent memory and register buses to add to the efficiency of the code. A set of on-chip peripherals form a complete system for TV set and VCR applications: Voltage Synthesis VPS/WSS Slicer Teletext Slicer Teletext Display RAM OSD Additional peripherals include a watchdog timer , a serial peripheral interface (SPI), a 16-bit timer and an A/D converter.
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STV224X Video processor:
The STV2246/2247/2248 are fully bus controlled ICs for TV including PIF, SIF, luma, chroma and deflection processing. Used with a vertical frame booster (TDA1771 or TDA8174 for 90° chassis, STV9306 for 110° chassis), they allow the design of multi-standard (BGDKIMNLL, PAL/ SECAM/NTSC) sets with very few external components and no manual adjustments.
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UV1315, UV1316, UV1336
General description of UV1315: The UV1315 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 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 Hyper-band · Standardized mechanical dimensions and pinning PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Gain control voltage (AGC) Tuning voltage High band switch Mid band switch Low band switch Supply voltage Not connected Not connected Not connected Symmetrical IF output 1 Symmetrical IF output 2
PIN VALUE
:4.0V, Max:4.5V :5V, Min:4.75V, Max:5.5V :5V, Min:4.75V, Max:5.5V :5V, Min:4.75V, Max:5.5V :5V, Min:4.75V, Max:5.5V
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Band switching 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 I˛C-bus · Off-air channels, S-cable channels and Hyper-band · 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 I˛C-bus address select I˛C-bus serial clock I˛C-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 ` connector are available F' PINNING PIN VALUE
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Gain control voltage Tuning voltage Address select Serial clock Serial data Not connected Supply voltage ADC input (optional) Tuning supply voltage Ground :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 11
11.
IF output
TDA7269A
General Description of TDA7269A The TDA7269A is a class AB dual Audio power amplifier, specially designed for high quality sound applications as Hi-Fi music centers and TV sets. Requires very few external components.
1 2 3 4 5 6 7 8 9 10 11
Wide supply voltage range up to ±20V Split supply High output power; 14 + 14W @THD =10%, RL =8W,VS= ±16V No pop at turn-on/off Mute (Pop free) Stand-by feature Thermal overload protection Short circuit protection to gnd
- VS Output1 + VS Output2 Mute - VS In+(2) In-(2) Gnd In-(1) In+(1)
PINNING
STV9306
General description: The STV9306 is a fully I2C controlled vertical deflection IC designed for use in 110°, 4/3 or 16/9 CRT applications. It integrates both the vertical deflection and E/W correction circuitries necessary in design of a 110° chassis. FEATURES · FULLY I 2C CONTROLLED · DMOS POWER HALF-BRIDGE AMPLIFIER · DC COUPLED OPERATION · INTERNAL FLYBACK GENERATOR (UP TO 60V) · SELF ADAPTED SAWTOOTH (50/60Hz) · 100Hz OPERATION · VERTICAL LINEARITY, AMPLITUDE AND CENTERING ADJUSTMENTS · HORIZONTAL WIDTH, PINCUSHION, TRAPEZOID AND CORNER ADJUSTMENTS · BREATHING CORRECTION · 4/3, 16/9 CRT APPLICATION · THERMAL PROTECTION · LINEAR VERTICAL ZOOM FUNCTION · E/W CLASS A OUTPUT · LOW EXTERNAL COMPONENTS
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PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. SCL CRAMP SDA CHOLD SYNC Vs FLYBACK GND OUT VOPS EWOUT SENS2 EWFB SENS1 BREATHING
STV5112
General Description: The STV5112 includes three video amplifiers designed with a high voltage bipolar/CMOS/DMOS technology (BCD). It drives directly the three cathodes and is protected against flashovers. Thanks to its three cathode current outputs, the STV5112 can be used with both parallel and sequential sampling applications. Bandwidth: 8MHz TYPICAL Supply Voltage: 220V typical Rise and fall time: 50ns typical CRT cathode current outputs for parallel or sequential cut-off or drive adjustment Flashover protection Power dissipation: 3.6W PINNING
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
PIN VALUE
BLUE INPUT VCC LOW VOLTAGE GREEN INPUT RED INPUT VDD HIGH VOLTAGE RED CATHODE CURRENT RED OUTPUT GROUND RED FEEDBACK GREEN OUTPUT GREEN CATHODE CURRENT GREEN FEEDBACK BLUE OUTPUT BLUE CATHODE BLUE FEEDBACK
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
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technique enables the reduction of the standby power consumption to approximately 1W while delivering 300mW in a 150W SMPS. · Integrated startup current source · Loss less 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 VCC 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 1.2A p-p during flyback Output resistor 8.5 Ohm sink 15 Ohm source typ. Max:16V (Operating range 6.6V-13V) Min:50V Max:500V
MSP 34XXG
General description: The MSP 34xxG family of single-chip Multi-standard 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. Two-carrier FM systems according to the German or Korean terrestrial specs or the satellite specs can be processed with the MSP 34x0G. Digital demodulation and decoding of NICAM-coded TV stereo sound, is done only by the MSP 3410G. The MSP 34x0G offers a powerful feature to calculate the carrier field strength, which can be used for automatic standard detection (terrestrial) and search algorithms (satellite). The MSP 3411G has all functions of the MSP34x0G with the addition of a virtual surround sound feature. Surround sound can be reproduced to a certain extent with two loudspeakers. The MSP3411G includes our virtualizer algorithm "3D-PANORAMA" which has been approved by the Dolby Laboratories for compliance with the "Virtual Dolby Surround" technology. In addition, the MSP 34x1G includes our "PANORAMA" algorithm. The MSP34x1G has built-in automatic functions: The IC is able to detect the actual sound standard automatically (Automatic Standard
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Detection). Furthermore, pilot levels and identification signals can be evaluated internally with subsequent switching between mono/ stereo/bilingual; no I 2C interaction is necessary (Automatic Sound Selection). 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, D/K, I & L) with MSP 3410G. · 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 · Subwoofer output with on-chip programmable low-pass and complementary high-pass filters DSP Section (Audio Base band 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 de-emphasis systems including adaptive Wegener Panda 1 without external components or controlling · Digitally performed FM identification decoding and de-matrixing · Digital base-band processing: volume, bass, treble, 5-band equalizer, loudness, pseudo-stereo, and base-width enlargement · Simple controlling of volume, bass, treble, equalizer etc. Analog Section · four selectable analog pairs of audio base-band 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
24CO8
General description: The 24C16 is a 8Kbit electrically erasable programmable memory (EEPROM), organized as 4 blocks of 256 * 08 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 I˛C-bus compatible · Byte and Multi-byte write (up to 8 bytes) · Page write (up to 16 bytes) · Byte, random and sequential read modes · Self timed programming cycle
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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
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
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
TDA7261
General Description of TDA7261 The TDA7261 is a class AB dual Audio power amplifier, specially designed for high quality sound applications in mono TV sets. Wide supply voltage range up to 50V ABS max. Split supply High output power;25W @THD =10%, RL =8W,VS= ±20V No pop at turn-on/off Mute (Pop free) Stand-by feature Thermal overload protection Short circuit protection to gnd
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PINNING
1. 2. 3. 4. 5. 6. 7. 8. N.C. + VS Output Mute/Stby - VS In GND N.C.
Saw filter' list: s
VIDEO G1975M K2966M J1981 K2966M K2962M VIDEO G3967M K3958M K3958M K3958M AUDIO
PAL BG PSBG DK PAL II' PSBGDKK'II' PSBGDKK'LL'
MONO
L9653 AUDIO G9353M K9356 K9356 K9656
PAL BG PAL II' PSBGDKK'II' PSBGDKK'LL'
PINNING 1. Input 2. Input-ground 3. Chip carrier-ground 4. Output 5. Output K9656M, L9653M PINNING 1. Input 2. Switching Input 3. Chip carrier-ground 4. Output 5. Output
STR
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GENERAL BLOCK DIAGRAM of 11AK37
SUBWOOFER
SUB AMP
TDA7261
MSP 34X0G (STEREO SOUND) MSP 3411G (VIRTUAL DOLBY) PLL/VST TUNER UV1315/1316 IC
2
L R
AU. AMP
TDA726
HP. AMP. TDA1308
QSS
SERVICE CONNECTOR NVM
MONO
RGB AMP
KEYPAD
ST92195 MICRO CONTROLLER IF
STV5112 STV2248C VIDEO PROCESSOR
IR SENSOR
VER AMP
STV9306
SMPS
150V +12V AUD. +12V AUD.
VIDEO SWITCHING CIRCUITS
MC 44608
+8V +5V +5V St-by
HORIZONTAL DRIVE BU2508 SVHS
SCART2 SCART1 FAV/BAV 19
AK37/TITANIUM SERVICE MENU
SERVICE ADJUSTMENTS
Parameter OSD IF1 IF2 IF3 IF4 AGC VLIN VS1A VS1B VP1 HP1 VS2A VS2B VP2 HP2 RGBH VSOF VPOF HSOF HPOF HTOF WR WG WB BR BG APR FMP1 NIP1 SCP1 FMP2 OSD Horizontal Position IF Coarse Adjust IF Fine Adjust IF Coarse Adjust for L-Prime IF Fine Adjust for L-Prime Automatic Gain Control Vertical Linearity Vertical Size for 50 Hz / 4:3 ( AK30 ) Vertical Size for 50 Hz / 16:9 ( AK30 ) Vertical Position for 50 Hz ( AK30 ) Horizontal Position for 50 Hz ( AK30 ) Vertical Size for 60 Hz / 4:3 ( AK30 ) Vertical Size for 60 Hz / 16:9 ( AK30 ) Vertical Position for 60 Hz ( AK30 ) Horizontal Position for 60 Hz ( AK30 ) RGB Horizontal Shift Offset Vertical Size Offset for 60 Hz ( AK37 ) Vertical Position Offset for 60 Hz ( AK37 ) Horizontal Size Offset for 60 Hz ( AK37 ) Horizontal Position Offset for 60 Hz ( AK37 ) Horizontal Trap Correction Offset for 60 Hz ( AK37 ) White Point Adjust for RED White Point Adjust for GREEN White Point Adjust for BLUE Bias for RED Bias for GREEN APR Threshold FM Prescaler when AVL is OFF NICAM Prescaler when AVL is OFF SCART Prescaler when AVL is OFF FM Prescaler when AVL is ON STEREO ONLY STEREO ONLY STEREO ONLY STEREO ONLY CVBS RGB Horizontal position compensation Notes
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NIP2 SCP2 S1V S2V F1H F1L F2H F2L BS1 BS2 BS3 CB OP1 OP2 OP3 OP4 OP5 TX1
NICAM Prescaler when AVL is ON SCART Prescaler when AVL is ON SCART1 Volume SCART2 Volume High Byte of crossover frequency for VHF1-VHF3 Low Byte of crossover frequency for VHF1-VHF3 High Byte of crossover frequency for VHF3-UHF Low Byte of crossover frequency for VHF3-UHF Band Switch Byte for VHF1 Band Switch Byte for VHF3 Band Switch Byte for UHF Control Byte Option 1 (see the Option List) Option 2 (see the Option List) Option 3 (see the Option List) Option 4 (see the Option List) Option 5 (see the Option List) Teletext Option 1 (see the Option List)
STEREO ONLY STEREO ONLY STEREO ONLY STEREO ONLY Meaningful for only PLL Tuner Meaningful for only PLL Tuner Meaningful for only PLL Tuner Meaningful for only PLL Tuner Meaningful for only PLL Tuner Meaningful for only PLL Tuner Meaningful for only PLL Tuner Meaningful for only PLL Tuner
GEOM Geometry Option (see the Option List) ( AK37 )
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OPTION LIST
OP1 Peripheral Options
7 6 5 4 3 2 1 NOT USED 1, Display " AV-3"as " F-AV" 0, Display " AV-3"as " B-AV" 1, Turn back TV mode after the last AV (with AV key) 0, Turn back first AV mode after the last AV 1, SVHS is available in AV key stream 0, SVHS is NOT available in AV key stream 1, RGB is available in AV key stream 0, RGB is NOT available in AV key stream 1, AV-3 is available in AV key stream 0, AV-3 is NOT available in AV key stream 1, 0, 0 1, 0, AV-2 AV-2 AV-1 AV-1 is is is is available in AV key stream NOT available in AV key stream available in AV key stream NOT available in AV key stream
OP2 Reception Standard Options
7 6 5 4 3 2 1 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0 1, 0, 3-button keyboard (V-, P+, V+) 4/5 button keyboard (V-, V+, P-, P+, Menu) L/L'is available L/L'is not available I is available I is not available DK is available DK is not available BG is available BG is not available 3D PANORAMA is visible DOLBY VIRTUAL is visible for SECAM LLP, EXT MONO INPUT is available inner demodulation is available for SECAM LLP LOW POWER is available LOW POWER is not available
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OP3 Video Options
7 6 Xtal Configuration 00, 1 Xtal PAL 4.43 01, 2 Xtal PAL/NTSC 4.43/3.58 10, 1 Xtal PAL/SEC/NTSC 4.43 11, 2 Xtal PAL/SEC/NTSC 4.43/3.58 5 1, Enable Blue back when no signal in AV modes 0, No blue back in AV modes 4 1, White Insertion is ON 0, White Insertion is OFF 3 1, Blue Background when no signal 0, Disable Blue Background 2 1, Semi-transparent background for menu 0, Solid Menu background for menu 1 1, Black Stretch is ON 0, Black Stretch is OFF 0 1, APR is ON 0, APR is OFF
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OP4 TV Features
7 1, Headphone is available (for STEREO models) 0, Headphone is not available 6 1, Arabic/Persian is Available in Menu Languages (for A, D, E, F, and later) 0, Arabic/Persian is NOT Available in Menu Languages 5 1, Hebrew is Available in Menu Languages (for A, D, E, F, and later) 0, Hebrew is NOT Available in Menu Languages 4 1, Hotel Mode can be activated 0, Hotel Mode can not be activated 3 1, No Signal Timer is enabled 0, No Signal Timer is disabled 2 For PLL Tuner 1, Frequency based search 0, Channel table based search (No meaning for for VST Tuner) 1 1, 3-band tuning (VHF1, VHF3, UHF) 0, 1-band tuning (only UHF) 0 1, Extra 200 msec blanking for VST 0, no-extra blanking
OP5 Channel Tables
7 6 5 4 3 2 1 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, Extra 150 msec blanking more for VST (if OP4.b0 = 1, to SECAM color problem) no-extra blanking " Programme"item in AUTOSTORE menu is visible " Programme"item in AUTOSTORE menu is invisible Force both channel on even no carrier ( carrier mute disable ) Default value after reset French OS Channel Table is available French OS Channel Table is not available French Channel Table is available French Channel Table is not available England Channel Table is available England Channel Table is not available East Europe Channel Table is available East Europe Channel Table is not available
0 1, West Europe Channel Table is available 0, West Europe Channel Table is not available
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TX1 Teletext Options
7 6 5 4 3 1, Auto APS after Stand-By 0, no APS after Stand-By RESERVED (must be 0) Teletext Language Groups 000, Group 1 West (English, French, Swedish, Czech, German, Portuguese, Italien, Rumanian) 001, Group 2 West/East (Polish, French, Swedish, Czech, German, Serbian, Italien, Rumanian) 010, Group 3 West/Turkish (English, French, Swedish, Turkish, German, Portuguese, Italien, Rumanian) 011, Group 4 East/Cyrillic (English, Cyrillic, Swedish, Czech, German, Serbian, Lettish, Rumanian) 100, Group 5 Arabic (English, French, Swedish, Turkish, German, Hebrew, Italien, Arabic) 2 1 0 Device type selection 000, EPROM M6 A 001, ROM H5 P 010, ROMLESS H5 P 011, EPROM M6 R 100, ROM M6 R 101, OSDEPROM M6 R 110, ROM M6 P 111, Read Auto Gain Table for the device from EEPROM
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GEOM Geometry Options ( for AK37 )
7 6 5 NOT USED 1, SVHS audio input in FAV/BAV in 0, SVHS in AV2 1, 0, 4 1, 0, 3 1, 0, 2 1, 0, 1 1, 0, 0 1, 0, AK37 adjustment values are valid ( default for AK37 ) AK30 adjustment value are valid ZOOM mode is available ZOOM mode is not available SUBTITLE mode is available SUBTITLE mode is not available CINEMA mode is available CINEMA mode is not available 14:9 mode is available 14:9 mode is not available Tube Format16:9 Tube Format 4:3
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TUNER SETTINGS VHF1-VHF3 Frq. (Mhz) Philips UV1316S MK3 Thomson CTT5020 Samsung TECC2949PG28B Samsung TECC2949PG35B Alps TEDE9X226A Alps TEDE9-004A 156,25 MHz 114,25 MHz 170,25 MHz 170,25 MHz 142,25 MHz 149,25 MHz VHF3-UHF Frq. (Mhz) 441,25 MHz 401,25 MHz 465,25 MHz 449,25 MHz 425,25 MHz 424,25 MHz AK30 SERVICE MENU ITEMS F1H 00001100 00001001 00001101 00001101 00001011 00001011 Explanations F1H F1L F2H F2L BS1 BS2 BS3 CB High byte of VHF1-VHF3 cross-over frequency Low byte of VHF1-VHF3 cross-over frequency High byte of VHF3-UHF cross-over frequency Low byte of VHF3-UHF cross-over frequency Band switching byte for VHF1 Band switching byte for VHF3 Band switching byte for UHF Control byte F1L 00110010 10010010 00010010 00010010 01010010 11000010 F2H 00011110 00011011 00011111 00011110 00011101 00011100 F2L 00000010 10000010 10000010 10000010 00000010 11110010 BS1 00000001 00000011 00000001 00000001 00000001 00000001
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AK37/TITANIUM Languages Groups
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
GROUP 1 - WEST
ENGLISH FRENCH SWEDISH CZECH GERMAN PORTUGUESE ITALIAN RUMANIAN POLISH FRENCH SWEDISH CZECH GERMAN SERBIAN ITALIAN RUMANIAN ENGLISH FRENCH SWEDISH TURKISH GERMAN PORTUGUESE ITALIAN RUMANIAN ENGLISH CYRILLIC SWEDISH CZECH GERMAN SERBIAN LETTISH RUMANIAN 28
GROUP 2 WEST / EAST
GROUP 3 WEST / TURKEY
GROUP 4 EAST / CYRILLIC
· · · · · · · ·
GROUP 5 - ARABIC
ENGLISH FRENCH SWEDISH TURKISH GERMAN HEBREW ITALIAN ARABIC
Using Remo te Control Buttons
RED : Is used to switch AVL to ON or OFF mode on service menu. GREEN : Is used to enter the geometry menu. YELLOW : Is used to prepare the system for screen adjustments. BLUE : Is used for automatic IF and AGC adjustments. TTX Update : Is used to change the picture mode.
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