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COLOR TELEVISION
SERVICE
MANUAL
21" T2S08 CHASSIS WITH NICAM&TELETEXT
CONTENTS
SAFETY PRECAUTION ......................................................... 1 SPECIFICATION .................................................................. 2 IC'S GENERAL DESCRIPTION ............................................. 3 SPECIAL IC INTRODUCTION ................................................ 3 CHASSIS BLOCK DIAGRAM ................................................ 12 SERVICE MODE&ADJUSTMENT .......................................... 13 TEST POINT WAVE FORM&SCHEMATIC DIAGRAM ............... 18
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SAFETY PRECAUTION
1. X-RAY RADIATION PRECAUTION
1.1 Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards the high voltage must be specified limit. The normal value of the high voltage of this receiver is 27KV± 500V under 230V AC power source. The high voltage must not exceed 30KV. 1.2 Each time a receiver requires servicing the high voltage should be checked following the HIGH VOLTAGE CHECK procedure in this manual. It is recommended the reading of the high voltage be recorded as a part of the service record. It is important to use an accurate and reliable high voltage meter. 1.3 The primary source of X -RAY RADIATION in this TV receiver is the picture tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as used in this TV receiver. 1.4 Some parts in this receiver have special safety-related characteristics for X-RAY RADIATION protection. For continued safety, parts replacement should be undertaken only after referring the PRODUCT SAFETY NOTICE below.
2. GENERAL SAFETY PRECAUTION
The following are the necessary precautions to be observed before servicing this chassis WARNING: Service should not be attempted by anyone unfamiliar with the necessary 2.1 Since the power supply circuit of this receiver is directly connected to the AC power line. An isolation transformer should be used during any dynamic service to avoid possible shock hazard. 2.2 Always discharge the picture tube anode to the CRT conductive coating before handling the picture tube. The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. Use shatterproof goggles and keep picture tube away from the unprotected body while handling. 2.3 When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in place, such as: nonmetallic control; knobs, insulating covers, shields, isolation resistor-capacitor, network, etc. 2.4 Connection wires must be kept away from components with high voltage or high temperature. 2.5 When replacing parts or circuit boards, disconnect the power cord. 2.6 When replacing a high voltage resistor (metal oxide resistor) on circuit board, keep the resistor APP. 10mm (1/2 in.) away from circuit board. 2.7 If any fuse in this TV receiver is broken, replace it with the FUSE specified in the chassis parts list. 2.8 The receiver is designed to operate with 230V (50Hz) AC mains.
3. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics are often passed unnoticed by a visual inspection and the X-RAY RADIATON protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, X-RAY RADIATION or other hazards.
Warning!
There are no any repairable components in this TV set. Do not try to make any change to it. High voltage inside may cause danger.
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SPECIFICATION
RF SYSTEM VIDEO SYSTEM TUNING SYSTEM RECEIVING CHANNEL PROGRAM PRESET AV JACKS TELETEXT ANTENNA INPUT AUDIO OUTPUT MAIN POWER POWER CONSUMPTION COLOR SYSTEM: PAL SECAM SOUND SYSTEM:B/G D/K I NICAM STEREO PAL SECAM NTSC4.43 VOLTAGE SYNTHESIZER TUNING VHF-L: E2S6 48.25 MHz140.25MHz VHF-H: S7S36 147.25 MHz423.25MHz UHF: S37DS57 431.25 MHz863.25MHz 99 1 SIDE RCA AV IN 1 FULL SCART AND 1 AV SCART 1PAGE 75UNBALANCE 2.5W 170-260V AC 50/60Hz 100W
CHIP GENERAL DESCRIPTION
1. MAIN BOARD PART
IC001 IC002 IC101 IC301 IC601 IC603 IC604 IC605 IC606 IC701 IC801 ST92195 24C08 STV2246 STV9306A/B H11A817C MC7808CT MC7805CT MC7812CT CD7522CS STV8216 MCU With ON SCREEN DISPLAY and TELETEXT Decoder 8 Kbit Serial I2C Bus EEPROM I²C BUS-Controlled Multistandard Single Chip TV Processor BUS-Controlled VERTICAL DEFLECTION W.E/W CORRECTION CIRCUIT OPTOCOUPLERS +8V VOLTAGE REGULATOR +5V VOLTAGE REGULATOR +12V VOLTAGE REGULATOR 3W AUDIO AMPLIFIER Multi-standard TV Audio Processor and Digital Sound Demodulator
CHIP INTRODUCTION
1. ST92195
The ST92195 microcontrollers are developed and manufactured by STMicroelectronics using a proprietary n-well HCMOS process. Their performance derives from the use of flexible 256-register programming model for ultra-fast context switching and real-time event response. The intelligent on-chip peripherals offload the ST9 core from I/O and data management processing tasks allowing critical application tasks to get the maximum use of core resources. TheST92195 MCU support low power consumption and low voltage operation for power-efficient and low-cost embedded systems.
1.1 Main features
28 fully-programmable I/Os 4 channels Analog/Digital Converter -2-
Built in I2C bus interface Built in OSD and Teletext decoder 14-bit Voltage Synthesis PWM output for VS tuning system
1.2 Pin description
Pin No. 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 Pin Name P2.0 RESET P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 P3.7 P3.6 P3.5 P3.4 B G R BLANK P5.1 P5.0 VDD JTDO WSCF WSCR AVDD3 TEST0 MCFM JTCK TXCF CVBSO AVDD2 JTMS CVBS2 CVBS1 AGND GND JTRST0 PXFM AVDD1 HSYNC VSYNC Signal Name IRIN RESET NC MUTE NC ON/OFF DESIGN SCART1 SCART2 AV SEL S0 S1 TV/DVD DFD B G R BLANK SDA SCL VDD JTDO WSCF WSCR AVDD3 TEST0 MCFM JTCK TXCF CVBSO AVDD2 JTMS CVBS2 CVBS1 AGND GND JTRST0 PXFM AVDD1 HSYNC VSYNC I/O I I I/O O I/O O I I I O O O O O O O O O I/O O Function IR Input Hardware Reset Not Used Mute Output PIN Not Used Standby Output Service menu control Identify scart entering Design Identify scart entering Design AV Selection AV/TV AV/TV TV/DVD Default data control OSD Blue colour Signal Output OSD Green colour Signal Output OSD Red colour Signal Output OSD Blanking Output I2C data line I2C clock line +5 V Digital Supply Test Pin Analog Pin For VPS / WPP slicer line PLL Analog Pin For VPS / WPP slicer line PLL +5V Analog VDD For PLL Test Pin Analog Pin for display pixel freq. multiplier Test Pin Analog pin for VPS /WSS line PLL Test Pin Analog Power supply Test Pin CVBS In for VPS / WSS CVBS In for Teletext Slicer Analog ground Digital ground Test Pin Analog Pin for display pixel freq. multiplier Analog Power Supply Horizontal Sync Input Vertical Sync Input -3-
I I
I I
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
P4.0 P4.1 P4.2 P4.3 P4.4 P4.5 P4.6 P4.7 XTAL XTAL P2.5 P2.4 P2.3 P2.2 P2.1
BSW1 BSW2 SAW_SW1 NC SAW_SW2 NC Vlin PWM VOL PWM XTAL XTAL LED2 LED1 VS NC KB INPUT
O O O I/O O I/O O O
O O O I/O I
Band switch 1 Band switch 2 SAW Filter switch 1 Not connected SAW Filter switch 2 Not connected V-linearity PWM output VOL PWM output Clock oscillator Clock oscillator LED driver LED driver VST Voltage ouput Not connected KEY Input
1.3 Block diagram
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1.4 General application description
BAND SWITCH OUTPUT (Pin42 Pin43) Pin42 BSW1 0 0 1 1 KEY IN (Pin 56) 0.285 ~ 0.587V 0.706 ~ 1.098V 1.204~ 1.596V 1.704 ~ 2.096V 2.194 ~ 2.586V 2.704 ~ 3.096V 3.205 ~ 3.606V 3.745 ~ 4.145V 4.282 ~ 4.682V Pin43 BSW2 0 1 0 1 KEY PRESSED Volume (1 K ohm) Volume + (2.2 K ohm) Program- (3.9 K ohm) Program+ (6.2 K ohm) MENU (9.1 Kohm) TV/DVD (13.8 Kohm) AV/TV(22 Kohm) Analog (37.4 Kohm) OK (86.5 K ohm) SELECTED BAND NOT USED VHF-L VHF-H UHF
KEYBOARD INPUT LEVEL (Pin56)
Note:The pull up resistor of Pin56 is 10K. TV/AV SELECTION (Pin11/Pin12) S0-Pin11 S1-Pin12 TV/AV MODE STD-BY (Pin 6) 0 1 0 0 TV 1 0 AV1/RGB 0 1 AV2 1 1 S-VHS
STANDBY OUTPUT (Pin6) Mode Standby Operating
2. STV2246H
The STV224XH is fully bus-controlled IC for TV that include PIF, SIF, Luma, Chroma and Deflection processing functions. Used with a vertical frame booster (TDA8174A for a 90° chassis, STV9306 for a 110° chassis), they allow multi-standard (BG/DK/I/MN/LL', PAL/SECAM/NTSC) sets to be designed with very few external components and no manual adjustments.
2.1 Main features
I²C Bus Control PIF Circuit with PLL Demodulation (Positive and Negative Video) SIF Circuit with QSS Structure, FM Demodulation and AM Demodulation for France Intercarrier Capability and Built-in Sound Band pass Sound Subcarrier Output for Stereo Chassis (FM, NICAM) Integrated Chroma Filters and Luma Delay Line and Integrated Chroma Delay Line 3 channels input Video Switch and 2 channels CVBS output OSD RGB Inputs and external RGB Inputs Interface PAL/SECAM/NTSC Chroma Demodulators Black Stretch and peaking Circuit -5-
Automatic Cut-off Current Loop, manual Cut-off possible for low-cost applications Two Horizontal Deflection PLLs APR (Automatic RGB Peak Regulation) or RGB Peak Limitation Function
2.2 Pin description
PIN NO. 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 SYMBOL SIFIN1 SIFIN2 AGCSIFCAP VREFIF AGCPIFCAP PIFIN1 PININ2 TUNERAGCOUT IFPLL GNDIF AM/FMOUT/SC VCCIF INTCVBSOUT EXTAUDIOIN PIFLC1 PIFLC2 VCC2 CVBSIN1 GND2 CVBSIN2 BS Y/CVBSIN3 CHR APR BEXT/Cb GEXT/Y REXT/Cr FBEXT NC/CVBSOUT1 BOUT GOUT ROUT ICATH BOSD GOSD ROSD FBOSD/HC XTAL3/BTUN XTAL2 XTAL1 SIF input SIF input AGC SIF capacitor Voltage reference filter AGC PIF capacitor PIF input PIF input AGC Tuner output IF PLL filter IF Ground AM/FM Mono sound or stereo carriers output 5V IF Supply Internal CVBS output External audio input LC input LC input Video/LUMA Supply voltage (8V) Internal video input Video/LUMA ground External video input Black stretch capacitor Y(SVHS) or CVBS3 external input Chroma(SVHS) input Automatic RGB peak regulation External blue input or Cb input External green input or Y input External red input or Cr input External fast blanking input Not connected or CVBS output1 Blue output Green output Red output Cathode current measurement input OSD Blue input OSD Green input OSD Red input OSD Fast blanking input/half contrast 3.5x MHz Crystal or bell filter tuning capacitor 3.5x MHz Crystal 4.43/3.5x MHz Crystal -6DESCRIPTION
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
CLPF X1/VAMP/CHROUT GND1 CVBSOUT2 VCC1 BCL/SAF VERT HOUT LFB/SSC SLPF SCL SDA VCCD GNDD AUDIOOUT FMCAP
Chroma PLL filter XTAL1 control pin, vertical amplitude DAC output and chroma reference signal output Chroma/scanning ground Second video switch output Chroma/scanning power supply (8V) Beam current limiter control voltage and safety input(X-ray) Vertical output pulse Horizontal output pulse Line flyback input and super-sandcastle output Scanning PLL filter I2C Bus clock input I2C Bus data input Digital supply voltage(5V) Digital ground Main audio output FM demodulation capacitor
2.3 Block diagram
3. STV9306A
The STV9306 is a fully I2C controlled vertical deflection IC designed forusein110°, 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-
3.1 Main features
Fully I2C controlled Internal flyback generator (UPTO60V) and DC Coupled operation Self adapted sawtooth (50/60Hz) Vertical linearity, amplitude and centering adjustments. Horizontal width, pincushion, trapezoid and corner adjustments. Breathing correction.
3.2 Pin description
PIN NO. 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 SYMBOL I C Bus clock Ramp capacitor I2C Bus data Hold capacitor Sync input Supply voltage Flyback output Vertical output Vertical output Vertical output Power Supply EW output Vertical current sense2 EW feedback Vertical current sense1 Breathing input
2
DESCRIPTION
3.3 Block diagram
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4. CD7522CS
The CD7522CS is a stereo 2×3W BTL audio amplifier, specially designed for high quality sound TV applications. Features of the CD7522CS include Stand-by and Volume control functions.
4.1 Main feature
2×3W output power RL = 8 @THD = 0.5% VCC = 10V Standby and volume control function Low turn-on turn-off pop noise Low voltage supply 14V Thermal overload protection
4.2 Pin description
Pin NO. 1 2 3 4 5 6 7 8 9 10 11 12 SYMBOL VCC OUT1+ GND OUT1ST-BY Ch1 In GND Ch2 In Vol OUT2GND OUT2+ DESCRIPTION Power supply Ch1 output + Gnd (output ch1) Ch1 output Standby control Ch1 audio output Gnd (Input) Ch2 audio output DC volume control Ch2 output Gnd (output ch2) Ch2 output +
4.3 Block diagram
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5. STV8216
This chip included three main parts: TV Sound Demodulator: provides all the necessary circuitry for the demodulation of audio transmissions of European and Asian terrestrial TV broadcasts. The various transmission standards are automatically detected and demodulated without user intervention. Audio Processor: based on DSP technology independently controls loudspeaker, subwoofer and headphone signals. It offers basic and advanced features, such as a ST Wide Surround, Equalizer, Automatic Loudness and Smart Volume Control for television viewer comfort. The STV8226/36 versions can perform additionally the SRS 3D Surround for stereo and mono signals. Audio Matrix: 3 stereo and 1 mono external analog audio inputs to loudspeakers and headphone, with 2 stereo external analog audio outputs (SCART compatible).
5.1 Main features
NICAM, AM, FM Mono and FM 2 carrier stereo demodulators for all sound carriers between 4.5 and 7MHz Mono input provided for optimum AM demodulation performances Demodulation controlled by automatic standard recognition system Sound IF AGC with wide range, over modulation and carrier offset recovery, Smart volume control, smart volume control, 5-band equalizer bass/treble control, automatic loudness control Loudspeaker and Headphone outputs with volume/balance controls and beeper Subwoofer output with volume control and programmable bandwidth, spatial Sound Effects (ST Wide Surround and Pseudo-Stereo), low-noise audio mutes and switches I²C Bus-controlled, single and standard 27 MHz crystal oscillator, Power supplies: 3.3V Digital, 5V or 8V Analog, embedded 3.3V regulators
5.2 Pin description
Pin NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 SYMBOL SIF VTOP VREF IF VDDIF GNDIF MONOIN AO1L AO1R VDDC GNDC AI1L AI1R VMC1 VMC2 AI2L AI2R VDDA GNDAH AO2L Pin TYPE Analog Analog Analog Analog power supply Analog power supply Analog Analog Analog Analog power supply Analog power supply Analog Analog Analog Analog Analog Analog Analog power supply Analog power supply Analog DESCRIPTION Sound IF input ADC VTOP decoupling pin AGC Voltage reference decoupling Pin 3.3V Power supply for IF AGC & ADC Ground for IF AGC & ADC Mono Input Left SCART1 audio output Right SCART1 audio output 3.3V Power supply for audio DAC/ADC Ground for audio DAC/ADC Left SCART1 audio input Right SCART1 audio input Switched VREF decoupling Pin for audio converters (VMCP) VREF decoupling Pin for audio converters (VMC) Left SCART2 audio input Right SCART2 audio input 3.3 V power supply for audio buffers, matrix & bias Ground for audio buffers and SCART Left SCART2 Audio output -10-
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
AO2R VDDH VREFA AI3L AI3R BGAP LSL LSR SW HPL HPR GNDSA HPD ADR SCL SDA REG RESET SYSCK MCK VDD1 GND1 GNDSP XTI XTO VDDP GNDP GND2 VDD2 CKTST SDO ST/SDI WS SCK BUS1 BUS0 IRQ
Analog Analog power supply Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog power supply Bidirectional Input Open drain Open drain Analog Input Bidirectional Bidirectional Digital power supply Digital power supply Analog power supply Input Output Analog power supply Analog power supply Digital power supply Digital power supply Input Bidirectional Bidirectional Bidirectional Bidirectional Bidirectional Bidirectional Bidirectional
Right SCART2 Audio output 8V/5V power supply for SCART and audio buffers Voltage reference for audio buffers Left SCART3 audio input Right SCART3 audio input Bandgap voltage source decoupling Left loudspeaker output Right loudspeaker output Subwoofer output Left headphone output Right headphone output Substrate analog/digital shield Headphone detection input (active low) Hardware I²C chip address control I²C serial clock I²C serial data 5V power regulator control Hardware reset (active low) System clock output I²S master clock output 3.3V Power supply for digital core & IO cells Ground for digital core & IO cells Substrate analog/digital shield for clock-PLL Crystal oscillator Input Crystal oscillator output 3.3V power supply for analog PLL clock Ground for analog PLL clock Ground for digital core, DSPs & IO cells 3.3V power supply for digital core, DSPs & IO cells Must be connected to ground I²S bus data output Stereo detection output / I²S bus data input I²S bus word select output I²S bus clock output I²C bus expander output1 I²C bus expander output2 I²C status read request
5.3 Block diagram
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CHASSIS BLOCK DIAGRAM
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SERVICE MODE&ADJUSTMENT
The Service-1 mode is entered by pressing the "SERVICE" key on remote control when the TV is in ON condition and not in any Menu mode. In service mode, by pressing "OK" key, Service-2 is accessed. by pressing "OK" key again, Serivice-3 is accessed. By pressing "PP" key, exit Service mode.
6.1 WHITE BALANCE ADJUSTMENT
The items within the Service-1 mode can be accessed using P+/P- keys and the selected item can be modified by using V+/V- keys. The parameters controlled in the Service-1 menu are : a) Red Gain ( 0 ... 63 ) b) DC Red ( 0 .... 127) c) Green Gain ( 0 .... 63) d) DC Green ( 0 .... 127) e) Blue Gain ( 0 .... 63) f) DC Blue ( 0 .... 127) g) APR_threshold (0....15) h) LOGO ( the first show the length of logo, and the followed is the logo) i) R-Cutoff (0...63) j) G-Cutoff (0...63) The display of Service-1 menu is showed as follows:
6.2 VIF ADJUSTMENT
When in Service-1 menu ,if "OK" key is pressed , Service-2 menu appears and the display is as follows.The parameters controlled in the Service-2 menu are : a) Tuner AGC ( 0 ... 63 ) b) Horizontal position 50 Hz( 0 ... 63) c) Vertical position 50 Hz (0...15) d) Vertical amplitude 50Hz (0...63) e) Vertical linearity 50Hz (0...63) f) Horizontal position 60 Hz( 0 ... 63) g) Vertical position 60 Hz (0...15) h) Vertical amplitude 60 Hz (0...63) i) Vertical linearity 60 Hz (0...63) j) Sub-Bright Maximum (0...63) k) Sub-Bright Minimum (0...63) l) Sub Tint (0...63) m) VCO Coarse ( 0 ... 15) n) VCO Fine ( 0 ... 127 ) o) VCO Coarse L1( 0 ... 15) p) VCO Fine L1( 0 ... 127 ) -13-
The display of Service-2 menu is showed as shown: The VCO status bar at the bottom of the screen appears only if either VCO Coarse item or VCO Fine item is selected. The VCO status is read from the Read register of STV223X/4X and guides whether to Increase / Decrease the VCO registers to attain VCO OK Status. For doing VCO adjustment , Feed a 38.9MHZ Carrier as IF input and adjust VCO Coarse and fine parameters to get VCO OK Status. If the cursor is in VCO Coarse or Fine, and the display shows VCO OK status, then pressing of AV" key will automatically put VCO fine to the Centre of the +60 to -60 KHz window. For doing VCO L1 adjustment ,Feed a 33.9 MHZ carrier as IF input and adjust VCO Coarse L1 and VCO Fine L1 to get VCO OK Status. If the cursor is in VCO Coarse L1 or Fine L1 , and the display shows VCO OK status, then pressing of "AV" key will automatically put VCO fine for L1 to the Centre of the +60 to -60 KHz window. Another fast way of adjustment of VCO is to put the selection bar to either VCO Coarse or fine and press the "AV" key. The VCO adjustment is done automatically. Similarly if you put the selection bar to VCO Coarse L1 or Fine L1 and press the "AV" key , the VCO L1 adjustment will be done automatically. NOTE:Below items are not used in this chassis: Vertical position 50 Hz Vertical amplitude 50Hz Vertical linearity 50Hz Vertical position 60 Hz Vertical amplitude 60 Hz Vertical linearity 60 Hz
6.3 STV9306 ADJUSTMENT
When in Service-2 menu, if "OK" key is pressed, Service-3 menu appears and the display is as follows, if the IC STV9306 has not been detected, then Service-4 (design menu) menu will appear.
1) Vertical amplitude for 50Hz signal. 2) Vertical amplitude for 60Hz signal. 3) Vertical shift (internal separated by 50Hz and 60Hz) 4) S Correction. 5) C Correction. 6) Horizontal width adjustment. 7) Pincushion Correction. 8) E/W Sharp Correction. 9) Trapezium Correction.
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6.4 DESIGN OPTION SETTING
When in Service-3 menu, if "OK" key is pressed, Option menu appears and the display is as follows:
OPTION1 b7 = Over modulation (0=Disable, 1=Enable, it's suggested to set it to 0 normally.) b5 = P/N/S crystals application (0=2 Crystals, 1= 1 Crystals, according the quantity of crystal used for color decoding in chassis.) b4 = Cutoff Loop (0= OFF, 1=ON, it's suggested to set it to 1 normally) b3 = Safety Reset (0=Active, 1=Non, it's suggested to set it to 0 normally) b2 = MONO IN (0 = OFF, 1= ON, Depend on the sound decoding solution used in chassis. ) b1 = Sound Demodulation (0 = Intercarrier/MONO, 1 =QSS/NICAM, depend on the sound decoding solution used in chassis.) b0 = logo display (0 =OFF, 1= ON, it's suggested to set it to 0 normally.) OPTION2 (set to 0 by default) b5 = HALF_CONTRAST (0 = OFF, 1=ON) b4 = Color 6dB (0 = OFF, 1 = ON) b3 = APR Feature (0 = ON, 1= OFF) b2 = Black Stretch (0 = ON, 1= OFF) b1 = Auto Flesh (0 = ON, 1= OFF) b0 = Coring (0 = ON, 1 = OFF) OPTION3 b7 =SMART (0 = OFF, 1=ON, it's suggested to set it to 1 normally) b5 = AVL (0 = OFF, 1=ON, it's suggested to set it to 0 normally.) b4 = PIF overmodulation (0 = OFF, 1= ON, it's suggested to set it to 0 normally.) b3 = Market_France --- secam LL (0 = OFF, 1 = ON, depend on the solution of chassis.) b2 = Manual/Auto cutoff (0 = Manual, 1 = Auto cutoff, depend on the CRT for chassis.) b1 = Mute pin low/high to control the mute of speaker (0 = low, 1 = high, depend on the solution of chassis.) OPTION4 b6 = WIDE MODE (0 = OFF, 1=ON, it's suggested to set it to 0 normally.) b4 = SCART2 (0 = OFF, 1=ON, depend on the solution of chassis.) b3 = RGB (0 = OFF, 1= ON, depend on the solution of chassis.) b2 = SVHS (0 = OFF, 1= ON, depend on the solution of chassis.) b1 = AV2 (0 = OFF, 1= ON, depend on the solution of chassis.) -15-
b0 = AV1 (0 = OFF, 1= ON, depend on the solution of chassis.) OPTION5 There are 8 bits used in OPTION 5. They are b0, b1, b2, b3, b4, b5, b6 and b7. For b0, normally, ST suggests to set it to 0. For b1, b2, they are used to select teletext languages. For b3, it's used to enable AV3 and SVHS. When b3 is set to 0, SVHS is enabled. When b3 is set to 1 in binary, the value is 8 in decimal. AV3 is enabled. For b4, b5, b6 and b7 of OPTION 5 are also used to set the brightness of background in teletext mode. When b4 b5 b6 and b7 are all set to 0, the brightness of teletext background is the same as brightness of TV background. When b4, b5, b6 and b7 are all set to 1, it's the maximum brightness of teletext background. It's the minimum brightness of teletext background when b4 is set to 1, and b5, b6 and b7 are all set to 0. you can set these 4 bits according to your favorite brightness of teletext background. A. for 11 OSD languages CPU ST92195C7B1/MNS and ST92195C7B1/MTH for east Europe, the setting of the b1 and b2 is listed as below. 1. If b1 = b2 = 0, then the TEXT languages like "ENGLISH, FRENCH, SWEDISH, CZECH, GERMAN, PORTUGUESE (SPANISH), ITALIAN, RUMANIAN" can be decoded; 2. If b1=1, b2=0, then the TEXT languages like "ENGLISH, RUSSIAN (BULGARIAN), HUNGARIAN, TURKISH, GERMAN, PORTUGUESE (SPANISH), ITALIAN, RUMANIAN" can be decoded. 3. If b1=0, b2=1, then the TEXT languages like "POLISH, RUSSIAN (BULGARIAN), SWEDISH, SLOVAK, GERMAN, SLOVENIAN, LITHUANIAN, RUMANIAN" can be decoded. 4. If b1 = b2 =1, then the TEXT languages like "POLISH, RUSSIAN (BULGARIAN), SWEDISH, CZECH, GERMAN, CROATIAN, LETTISH, RUMANIAN" can be decoded. B. for 12 OSD languages CPU ST92195C7B1/MNU and ST92195C7B1/MOK (SHRINK VERSION) for Western Europe, the setting of the b1 and b2 is as below. 1. If b1 = b2 = 0, then the TEXT languages like "ENGLISH, FRENCH, FINNISH, CZECH, GERMAN, PORTUGUESE (SPANISH), ITALIAN, GREEK" can be decoded; 2. If b1=1, b2=0, then the TEXT languages like "ENGLISH, FRENCH, DANISH, NORWEGIAN, GERMAN, PORTUGUESE (SPANISH), ITALIAN, GREEK" can be decoded. 3. If b1=0, b2=1, then the TEXT languages like "POLISH, FRENCH, SWEDISH, CZECH, HOLLAND, SERBIAN, ITALIAN, RUMANIAN" can be decoded. 4. If b1 = b2 =1, then the TEXT languages like "POLISH, FRENCH, SWEDISH, CZECH, GERMAN, PORTUGUESE (SPANISH), LETTISH, RUMANIAN" can be decoded. ST Text b0 is used to change the process for adjusting Auto gain. 1) When CPU ST92195C7B1/MOK is used, the b0 is suggested to set to 0, the gain table for shrink version should be selected. 2) When CPU ST92195C7B1/MNU is used, the b0 is suggested to set to 1, the gain table for normal version will be selected. b1, b2, b3 = select the correct process, only for ST engineer adjustment. ROM_M6_P_valid | OSDEPROM_M6_R_valid | ROM_M6_R_valid | EPROM_M6_R_valid EPROM_M6_R_valid | ROMLESS_H5_P_valid | ROM_H5_P_valid | EPROM_M6_A_valid /* note: ROMLESS_M6_R_valid == ROM_M6_R_valid*/ b4 = Color transition for SVHS of STV224XX (0 = b5 is available, 1 = b5 is not available, and "SHARPNESS" is no feature.) b5 = (0 = STV224XH, 1 = STV224XC/D/E). -16-
b6 = Tuner Drift Correction (0 = OFF, 1 = ON.) b7 = RGB/DVD display on screen (0 = RGB, 1 = DVD.) HPOS OSD, Adjust horizontal position of OSD. VPOS OSD, Adjust vertical position of OSD. HPOS TXT, Adjust horizontal position of teletext. VPOS TXT, Adjust vertical position of teletext. HOTEL MODE, To set HOTEL MODE ON or OFF. When HOTEL MODE is enabled. The end user can not make any adjustment of items in menu INSTALL, AUDIO and ORGANIZE. Menu INSTALL and AUDIO will disappear automatically. Volume Limit, To set maximum volume of HOTEL MODE. It's only available when HOTEL MODE is enabled. SndSt 1 b0, b1, b2, b3 of SndSt 1 are used to set the sound output level at pin 26 and pin 27 of STV8216 with RF signal. When b0, b1, b2, b3 of SndSt 1 are all set 0, the minimum sound output level will be got at pin 26 and pin 27 of STV8216 with RF signal. When b0, b1, b2, b3 of SndSt 1 are all set 1, it's 15 in decimal. The maximum sound output level will be got at pin 26 and pin 27 of STV8216 with RF signal. b4, b5, b6, b7 of SndSt 1 are used to set the "SURROUND" gain at pin 26 and pin 27 of STV8216 with RF & AV signal. When b4, b5, b6, b7 of SndSt 1 are all set 0, the minimum "SURROUND" gain will be got at pin 26 and pin 27 of STV8216 with RF & AV signal. When b4, b5, b6, b7 of SndSt 1 are all set 1, it's 240 in decimal. The maximum "SURROUND" gain will be got at pin 26 and pin 27 of STV8216 with RF signal. SndSt 2 b0, b2, b2, b3 of SndSt 2 are used to set the sound output level at pin 26 and pin 27 of STV8216 with AV signal. When b0, b2, b2, b3 of SndSt 1 are all set 0, the minimum sound output level will be got at pin 26 and pin 27 of STV8216 with AV signal. When b0, b2, b2, b3 of SndSt 1 are all set 1, it's 15 in decimal. The maximum sound output level will be got at pin 26 and pin 27 of STV8216 with AV signal. b4, b5, b6, b7 of SndSt 2 are used to set the "EQUALIZER" gain at pin 26 and pin 27 of STV8216 with RF & AV signal. When b4, b5, b6, b7 of SndSt 1 are all set 0, the maximum "EQUALIZER" gain will be got at pin 26 and pin 27 of STV8216 with RF & AV signal. When b4, b5, b6, b7 of SndSt 1 are all set 1, it's 240 in decimal. The minimum "EQUALIZER" gain will be got at pin 26 and pin 27 of STV8216 with RF & AV signal. LL1 MAGC, Just for SECAM LL1 SIF AGC setting purpose in STV8216. No available for PAL and NTSC system. When the item "LL1 MAGC" is set to OFF, the SIF AGC of STV8216 is set by software. When the item "LL1 MAGC" is set to ON, the SIF AGC of STV8216 can be set manually. The following steps can be followed when set this item. 1) To get a RF SECAM LL1 signal without sound modulation, only sound carrier is available. And put the signal to input of tuner in CTV 5 chassis. 2) To press "SERVICE" key on remote control to enter service menu. And select the item "LL1 MAGC" by P+ or P- key on remote control. Set the item "LL1 MAGC" from "OFF" to "ON" by V+ or V- key on remote control. service command, 1) "PP"----exit 2) "OK"---- switch between the service menu -17-
3) "AV"---- auto VCO adjust 4) "MUTE" ---- one line gain Enter service menu with user remote control, 1) Press key "Sleep" on remote control to set sleep time to "00:50". 2) Within 5 seconds, press local key "V+" in TV set to enter service menu. 3) Adjust expecting item as the same as service remote control.
TEST POINT WAVE FORM&SCHEMATIC DIAGRAM
-18-
-19-
-20-
-21-
T2S08 CHASSIS SCHEMATIC DIAGRAM
SCL SDA +5V-1 R813 33 C825 VCC R807 X801 C823 22p 270K 27MHz C822 22p 0.1u 56 IRQ IC801 STV8216 55 BUS0 54 BUS1 53 SCK 52 WS 51 ST 50 SD0 49 CKTST 48 VDD2 47 GND2 46 GNDP 0.1u 45 VDDP 44 XTO 43 XTI 42 GNDSP 41 GND1 C821 0.1u 40 VDD1 39 MCK 47u/16V C827 + IC701 OUT1+ GND1 CD7522CS STDBY OUT2+ OUT1OUT2GND2 GND VOL IN1 IN2
C417 100K
100K
VI
FBI VO RI GI 9
SW BI 8 7
LI LO 6 5 4 3
RI RO 2 1
VI VO
FBI RI GI 9
SW BI 8 7
LI LO 6 5 4 3
RI RO 2 1
R416 C415 C420 C416 C419 C422
C423 1u/50V
+
XS402
C418 330p C421 330p
21 20 19 18 17 16 15 14 13 12 11 10
21 20 19 18 17 16 15 14 13 12 11 10
R415
330p 330p 330p 330p 330p L407 15uH L406 15uH L408 15uH
330p
R414 220
C413 1u/50V
XS401 R419 68 V IN1 V OUT1 L401 15uH L404 15uH L402 15uH L403 15uH C401 C406 C402 C405
R413 10K R417 220
C424 1u/50V
+ +
+
D801
1N4148
10u/16V C826 C824
R708 2.2
0.47u/16V 38 SYSCK 37 RESET 36 REG 35 SAD 34 SCL 33 ADR 32 HPD 31 GNDSA 30 HPR 29 HPL
R705 3.3K
C707 0.1u
R709 2.2
R804 100
R805 100
R806 4.7K
R704 10K
FBI RI
330p 330p 330p 330p XS702 C709 0.1u R SPK C403 C408 C404 C407 330p 330p 330p 330p
SPK L
MONOIN
GNDAH
VERFIF
XS701 VERFA VDDH BGAP AO2R AO2L AL3R AI3L LSR LSL SW OUT L R810 18K R812 4.7K OUT R C815 10u/16V L803 10uH AO2L AO2R +8V C816 0.1u OUT R OUT L C818 0.1u R809 18K R811 4.7K C830 2200p C829 2200p
C708 0.1u R408 100K R407 100K R401 10K R402 10K R406 220 R405 220 D501 1N4007 C517 680p C511 D504 680p 1N4007 R513 1.2K C516 D506 680p 1N4007 R506 2.2K R501 1.2K R515
GI
C703 470u/25V
C706 0.1u
C414 1u/50V
TP21 KB TP22 KG
VDDIF
GNDIF
1
2
3
4
5
6 C805 0.1u
7
8
9
10
11
12 C810
13
14
15 C809
16
17
VDDA
GNDC
VMC1
VMC2
VDCC
CRT
AO1R
VTOP
AO1L
AI1R
AI2R
AI1L
AI2L
SIF
C803 C804 0.22u 0.1u L802 10uH
18 C812 0.1u
19
20
21
22 C814 0.1u
23
24
25
26
27
28
+
C807 0.1u
C817 C819 10u/16V 10u/16V
C702 47u/16V Q702 2SC1815
R701 4.7K Q701 2SA1015
R409 68
+
C808 C811
+
+
+
Q502 C411 1u/50V C409 1u/50V 1u/50V C412
2.2K TP23 R521 2.2K KR
+
+
+
R703 100K
R702 SCART2 ID V IN2 V OUT2 C410 1u/50V AI2L 4.7K
C802 56p +5V SIF
R802 22
AO1R
MUTE
AO2R
AO1L
AO2L
+15V
AI1L AI1R
AI2L AI2R +8V
AI2R
R524 10K
R523 10K
TP3
TU201
AGC
VCC
TP4 R244 56K
Q207 2SC1815
R522 10K
V OUT2
R OUT
VSYNC
OSD FB
H OUT
G OUT
B OUT
OSD G
OSD R
OSD B
+8V
+5V-1
+8V
ICAT
SC
ABL
SDA SCL
TXT
2
2
2
D202
1N4148
BU
BH
VT
BL
IF
AGC VT C220 22u/16V
1
2
3
4
5
6
7
8
9
10
11
IF R245 8.2K
R257 1K C239 0.1u
R230 470
R240 560
TP5
TP6
TP7 5.6V ZD501 Q503 2SA1015
+
R202 C216 R203 4.7K 27K 0.1u
+
C212 47u/16V
4700p
D203
0.1u
R201 100
C243 4700p C242
2.2u/50V
+
470
470
1N4148 R238 R246
R239 2.2K
56K
4.7u C241 0.1u C231
R236 27KC237
C238
C234 0.1u R248 C214 47u/16V
R247
+
+
R237
C213 47u/16V C235 1u/50V 55 AUDIO OUT 54 GND D
C232
+
C229
0.1u
R229
100 100 52 SDA 51 SCL 50 SLPF
FM CAP
GND1
OSD R
OSD B
OSD FB
VCC D
XTAL1
XTAL2
XTAL3
V AMP
INTCVBSOUT CVBSOUT
G OUT
ICAT
R OUT
B OUT
OSD G
VCC1
LFB
H OUT
VERT
BCL
CLPF
NC
+5V-1
L206 10uH BSW2 BSW1 IC201 STV2248
56
100u 16V 53
EXTAUDIAIN
AM/FM OUT
AGCSIFCAP
AGCPIFCAP
AGC OUT
CVBS IN1
VREF IF
PIF LC1
PIF LC2
R170 510
R015 1K
1
2
3
4
5
6
7
8
9
10
11
12 13 C801 47p TP8 L801 10uH
14 R219 150 L203
15
16
17
18 TP9
19
20
21
BS
IR
22
23
24
25
26
27
28 FBI RI GI BI R253 75
C429 C428 C427 1u/50V C218 1u/50V 1u/50V 1u/50V
+
R168 10 C127 0.1u XS101 +8V +5V IC101 ST92195 1 RST R120 MUTE R122 4.7K R136 6.8K R110 4.7K R160 6.8K R105 6.8K 4.7K 4 5 6 7 8 9 R106 12K R107 12K 10 11 12 IC102 24C08 13 14 R123 10K OSD B R128 OSD G R127 OSD R R126 OSD FB SDA SCL R125 1K R129 1K 1K R131 1K 1K R133 1K R134 1K 2.7K 19 20 SDA SCL VDD JTD0 WSCF ESCR AVDD3 TEST0 MCFM JTCK PXFM JTRET0 GND AGND TXT VIN WSS JTMS AVDD2 CVBS0 TXCF 38 R139 5.6K 37 36 35 34 33 32 C122 26 27 28 31 0.1u 30 R121 15K 29 C119 0.47u/50V C121 82p R130 1.5K +5V SW601 XS601 AC230V C136 22p C135 4700p T3.15A 250V C601 0.22u 250V F601 22 23 24 25 15 16 17 18 C204 0.1u MUTE NC STD BY SERVICE SCART1 ID SCART2 ID TV /AV S0 S1 NC DATA PRT OSD B OSD G OSD R OSD FB STDBY LED STDBY LED OSC OSC VOL PWM VLIN PWM NC SIF SW NC PIF SW BSW2 BSW1 V SYNC 53 52 51 50 49 X101 48 47 46 45 44 43 42 D104 411N4148 TP20 C133 0.1u 4MHz C115 39p C114 39p R103 33K C102 0.1u VT R104 33K SIF SW BSW2 D105 1N4148 BSW1 +5V ZD102 5.1V V SYNC SC +5V T601 UF-LB-1604 RT601 MZ72-18 C606 D606 D604 C604 C602 0.22u 250V R602 5D11 Q101 2N3904 C131 47p 2 3 IR IN RESET NC KB IN NC VT 56 R171 10K 55 54 R137 39K R218 +5V R074 R074 R074 R075 R072 R073 3.9K 3.9K 3.9K 6.2K 1K 2.2K
+
+
R221 150 C206
C208 1000p
+
C426 C217
+
+
+ +
0.1u
0.1u
0.1u
FB EXT
GND IF
SIF IN1
SIF IN2
PIF IN1
PIF IN2
VCC IF
G EXT
IF PLL
B EXT
R EXT
GND2
VCC2
IC103 HS0038
SW3 SW3 SW3 SW4 SW5 SW6 PPPP+ VV+
CVBS IN2
D111 HFT505M
Y/CVBS IN3
CHR
APR
R801560
CRAMP
CHOLD
EWOUT
SENS2
10uH
5
4
SF201 K9650M
5
4 +
R420 75
R423 R422 R421 75 75 75 SCL SDA
VCC
SDA
SCL
C203 0.1u
0.1u
R223 1K R224 1K Q202
SYNC
SENS1
VOPS
GND
OUT
C222 C223 C224 C209 1u/50V 10u/16V 0.022u 1u/50V
T201 7K011 C219
C425 1u/50V R418 75
BREATH
EWSENS
0.33u
FLYBACK
3 1
D201
2
Q201 2SC1815
1 SF202
K3953M
10K R214 22K
2.2K 6.8K 2.2K
STD BY +5V SCART1 ID SCART2 ID
R102 10K R112 33K R101 33K IF C101 0.1u +33V
C205 0.1u C207 0.1u SIF SW +5V-1 AGC SIF
470 R213 560 V OUT1
1K L302 1mH Q203 2SC1815 V IN1 V IN2 TP10 +8V
C310 4.7u/160V
ZD301 43V
TP25 C312 C309 1u/250V C311 0.22uF R308
2
0.01uF
L301 31uH
1
2
+
R329 10
C306 C308 1000u/16V 0.033u
R336 470
10K
R312 1K D305 RGP15J
+12V
R109 2.7K R108 2.7K SDA SCL +5V
GND SDA VCC SCL WC
IC601 H11A817
C603-C606 1000p 1KV D603-D607 RM11C
Q683 B892 C607 100u/400V R638 3.3K T604 D634 RU3YX C634 470P R625 6.8
2
TP11
IC606 7812
V in V out GND
TP12 C658 220u/16V
+15V
IC603 7808
V in V out GND
TP13 C675 47u/16V +8V
C318
470p/500V
+
D308 RGP15J C319 10u/250V R399 ***
3
R326 220K TP26
+
+
TP14 +5V-1
C603 D603 D605 C605
+
R620 180K
15
R685 15K
C651 0.1u
C657 0.1u R633 22
5
C674 0.1u IC604 7805 C632 47u/16V
R621 180K
IC605
C661 100u/16V
A0
A1
A2
+
V in
V out GND
T302 *** HV
+
TP15 +5V SC C330 47p D304 1N4148 D303 RGP15J
1
5
9 17
V in
V out GND
C645 470u/25V D635 RU4YX C637 470P C635 1000u/25V
+
C639 470u/16V R115 470 Q102 2SA1015
C671 0.1u
1 R316 R318 1K
1
7805
R190 1K
C613 4700p R611 5.6K D617 RGP15J
D614 1N4148
R622 15K
C616 1000p 2KV
40 TP19 H SYNC AVDD1 39
R655 1K R116 270
R149 5.6K
+
R143 10 C134 47u/16V
R619 22 C614 0.1u
R624 39
2
Q613 ST1802
ZD101 3.9V
D101 1N4148 R113 100K
C106 1u/50V
RST
+24V
+
TP16 +12V-1 +140V
+
D310 1N4007 +140V +15V D311 1N4007
2
R114 4.7K
C320 1000u/35V
R310 1 C322 470p/500V R307
2
FOCUS
Q611 2SA1015 R626 2.7K D616 1N4148 R617 2.2K R623 2.7K C615 R615 0.015u 22K L601 DEGAUSSING COIL ZD601 C617 0.015u Q612 2SC3807
8 2
16 13
D631 RG2 C631 470P C641 47u/160V Q631 2SC1815 R640
2
1
+
R303 150 R325 8.2K C321 22u/160V TP29
SCREEN
+
L101 10uH C109 100u/16V 21 C108 0.1u
TP17
+33V
11V C608 0.1u 400V XS603
+
R635 150K VR631 2K R637 150K D636 1N4148
+
C104 220p R111 5.6K C105 0.22u R117 10 C110 47u/16V C103 4700p R119 6.8K
15K IC602 uPC574 R639 15K
+
C659 1uF/50V +24V ABL-V ABL TP28 T301 JDT1924
R124 1.5K
TXT
XS602 XP601
9 3
C629 2200p 400V R629 8.2M 1/2W
C317 0.039u R319 R249 22K 10K
R321 8.2K
Q682 2SC1815
TP18 STD BY H OUT
+5V
+
C112 0.1u R118 5.6K
+
R141 10 C111 47u/16V
D641 6.2V
R636 10K
+
C638 0.22uF D309 1N4148 C326 0.1u
TP27
L303 0.2uH Q302 2SC5296 C313 7500p
1.6KV
D301 BY228 C314
+
4700p C315 0.018uF D302 RGP15J
C123 2200p
Q301 2SC2383
R306 220 C324 2200p
C246 4.7u/50V
Title: T2S08 CHASSIS SCHEMATIC DIAGRAM Number: Date: 20-May-2007 Described: Checked: Revision: 1 Sheet: 1 of 1 Approved:
C316 220p
2KV
C113 22p
50Hz
1. IS MARK OF CRITICAL COMPONENT 2.SUBJECT TO CHANGE WITHOUT NOTICE
H COIL
+8V
+8V
IF
V CIOL
1N41 48 R217 R216
R215
+
+
L204 10uH
L205 10uH R243 2.2K C245
C261 15p X202 C228 C227 C226 0.1u 0.1u 0.1u
1K
R231 470
R235 R233 R232 R234 47K
+8V B OUT G OUT R OUT
15K 2.2K 2.2K
49
48
47
46
45
44
470u 16V 43
4.43 MHz 40 39 38
42
41
37
36
35
34
33
32
31
30
29 ICAT R526 22
C225 R228 330K
ABL-V +12V IC301 STV9306 R311 R313 15K R312 100K
3 2
C221 47u/16V L201 10uH
SF203 5.5MHz
C233 470u/16V L202 10uH
2SC1815
+
V SYNC +24V +12V
R211
R212
C210 C211 47u/16V 0.1u
+
+
+
+
TP1
C806 10u/16V TP2
0.1u 10u/16V 0.1u 10u/16V
C813 10u/16V R803 330
+
C701 220u 16V
BF423 Q504 BF423 Q507 BF423 R520 10K R514 10K R505 10K
D701 1N4148
R519 1.2K
R507 47K
C521 2200p/2KV
XS302
XP502
XS101
XP501R508 4.7K R502 100 R510 100 R516 100
Q501 BF422
Q504 BF422
Q501 2SC1815
R509 100 C505 680p
R504 330
C510 680p
R512 330
C515 680p
R518 330
C506 100u/16V
+
R301 100
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 220K
R302 100
C303 0.1u
C304 0.68u R317 1K
C305 100u/35V D302 1N4007 R331 10
2
R322 100
R314 R335 R324 10K 100 68K
C307 1000p
R320 2.2K
R323
1
TP24
2
+
0.56
AI1L AO1L AI1R AO1R
R808 220K C820
Q801 2SA1015
+12V-1
R707 0.47
2
SCART1 ID BI
L405 15uH
R412 10K
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