Text preview for : 11AK45(serw.).pdf part of JVC 28GT1BUF serwis manual full.pdf.
Back to : 11AK45(serw.).pdf | Home
TABLE OF CONTENTS 1.INTRODUCTION ..............................................................................................................................1 2.TUNER.................................................................................................................................................1 3.IF PART (TDA9885/86) ..................................................................................................................1 4.VIDEO SWITCH TEA6415 ............................................................................................................2 5.MULTI STANDARD SOUND PROCESSOR ...........................................................................2 6.SOUND OUTPUT STAGE WITH TDA7269A .........................................................................2 7.BERTICAL OUTPUT STAGE WITH STV9379FA .................................................................2 8.VIDEO OUTPUT AMPLIFIER TDA6108...................................................................................2 9.POWER SUPPLY (SMPS) ............................................................................................................3 10.MICROCONTROLLER SDA55XX ...........................................................................................3
10.1.General Features ..........................................................................................................................3 10.2.External Crystal and Programmable Clock Speed ...................................................................3 10.3.Microcontroller Features .............................................................................................................3 10.4.Memory..........................................................................................................................................3 10.5.Display Features...........................................................................................................................3 10.6.Acquisition Features....................................................................................................................4 10.7.Ports ..............................................................................................................................................4 11.CLASS AB STEREO HEADPHONE DRIVER TDA1308 .................................................4 12.SAW FILTERS ................................................................................................................................4 13.IC DESCRIPTIONS .......................................................................................................................5 13.1.LM317T ......................................................................................................................................5 13.1.1.Description .............................................................................................................................5 13.1.2.Features..................................................................................................................................5 13.2.TDA1308T .................................................................................................................................5 13.2.1.General Description ..............................................................................................................5 13.2.2.Features..................................................................................................................................5 13.2.3.Pinning....................................................................................................................................6 13.3.MSP34X0G (MSP3410G) ....................................................................................................6 13.3.1.Description .............................................................................................................................6 13.3.2.Features..................................................................................................................................7 13.3.3.Pin connections.....................................................................................................................7 13.4.VDP313xY ................................................................................................................................8 13.4.1.Introduction............................................................................................................................8 13.4.2.Features..................................................................................................................................9 13.4.3.Pin Connections and short descriptions ............................................................................9 13.5.TEA6415C ..............................................................................................................................10 13.5.1.General Description ............................................................................................................10 13.5.2.Features................................................................................................................................10 13.5.3.Pinning..................................................................................................................................11 13.6.STV9379FA ............................................................................................................................11 13.6.1.Description ...........................................................................................................................11 13.6.2.Features................................................................................................................................11 13.6.3.Pinning..................................................................................................................................11 13.7.TDA7269A ..............................................................................................................................12 13.7.1.Description ...........................................................................................................................12 13.7.2.Features................................................................................................................................12 13.8.LM7800 (LM7805/LM7808) ...............................................................................................12 13.8.1.Description ...........................................................................................................................12 13.8.2.Features................................................................................................................................12 13.9.AT24C08 .................................................................................................................................12 13.9.1.Description ...........................................................................................................................12 13.9.2.Features................................................................................................................................12 13.9.3.Pin Configurations ..............................................................................................................13 i AK45 Service Manual 28/07/2006
13.10.SDA5555 ...............................................................................................................................13
13.10.1.General definition ..............................................................................................................13 13.10.2.Features..............................................................................................................................13 13.11.MC44608 ...............................................................................................................................14 13.11.1.Description.........................................................................................................................14 13.11.2.General Features ...............................................................................................................15 13.11.3.Pin Connections ................................................................................................................15 13.12.TCET1102G .........................................................................................................................16 13.12.1.Description.........................................................................................................................16 13.12.2.Applications .......................................................................................................................16 13.12.3.Features..............................................................................................................................16 13.13.TDA9885T ............................................................................................................................16 13.13.1.General Description ..........................................................................................................16 13.13.2.Features..............................................................................................................................16 13.13.3.Pinning................................................................................................................................17 13.14.PI5V330 .................................................................................................................................17 13.14.1.General Description ..........................................................................................................17 14.AK45 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS .........................18 14.1.SERVICE MENU ..........................................................................................................................18 14.2.ADJUST MENU ...........................................................................................................................18 14.3.OPTIONS MENU..........................................................................................................................30 Option 0. Video Processor Crystal Indication .............................................................................30 Option 1. (0x01) Video Processor Decoder Mode Register........................................................30 Option 2. (0x18) Video Processor Blanking Control ...................................................................30 Option 3. (0x19) Video Processor Cathode Drive Level .............................................................31 Option 4. ..........................................................................................................................................31 Option 5. CTI Avaliable, Mono AVL...............................................................................................31 Option 6. ..........................................................................................................................................31 Option 7. OPTIONHOTELACTIVE, PLL_VST, PIP Zoom Mode, PIP Position ...........................31 Option 8. IF Frequency...................................................................................................................32 Option 9. Standard Available.........................................................................................................32 Option 10. Scart, Combfilter, Teletext, Language .......................................................................33 Option 11. PLL Tuner Control 1 Byte............................................................................................33 Option 12. PLL Tuner Control 2 Low Byte ...................................................................................33 Option 13. PLL Tuner Control 2 Mid Byte ....................................................................................34 Option 14. PLL Tuner Control 2 High Byte ..................................................................................34 Option 15. PLL Tuner VHF LOW VHF HIGH Crossover Low Byte ..........................................34 Option 16. PLL Tuner VHF LOW VHF HIGH Crossover High Byte .........................................34 Option 17. PLL Tuner VHF HIGH UHF Crossover Low Byte ...................................................34 Option 18. PLL Tuner VHF HIGH UHF Crossover High Byte...................................................34 Option 19. PIP PLL Tuner Control 1 Byte.....................................................................................35 Option 20. PIP PLL Tuner Control 2 Low Byte ............................................................................35 Option 21. PIP PLL Tuner Control 2 Mid Byte .............................................................................35 Option 22. PIP PLL Tuner Control 2 High Byte............................................................................35 Option 23. PIP PLL Tuner VHF LOW VHF HIGH Crossover Low Byte ...................................35 Option 24. PIP PLL Tuner VHF LOW VHF HIGH Crossover High Byte...................................35 Option 25. PIP PLL Tuner VHF HIGH UHF Crossover Low Byte.............................................36 Option 26. PIP PLL Tuner VHF HIGH UHF Crossover High Byte............................................36 Option 27. Language Available 1 ..................................................................................................36 Option 28. Language Available 2 ..................................................................................................36 Option 29. Language Available 3 and Zoom Mode Available ....................................................36 Option 30. Country .........................................................................................................................37 Option 31. Prescaler MSP FM (AVL=OFF)....................................................................................37 Option 32. Prescaler MSP NICAM (AVL=OFF) .............................................................................37 Option 33. Prescaler MSP SCART (AVL=OFF) ............................................................................38 Option 34. Prescaler MSP I2S (AVL=OFF)....................................................................................38 Option 35. Not used........................................................................................................................38 Option 36. Not used........................................................................................................................38 Option 37. Reserved for USA ........................................................................................................38 Option 38. TV Teletext Mode Selection, Child Lock, Equalizer Country...................................38 ii AK45 Service Manual 28/07/2006
Option 39. Personal Preferance Equalizer Band 1 ......................................................................39 Option 40. Personal Preferance Equalizer Band 2 ......................................................................39 Option 41. Personal Preferance Equalizer Band 3 ......................................................................39 Option 42. Personal Preferance Equalizer Band 4 ......................................................................39 Option 43. Personal Preferance Equalizer Band 5 ......................................................................39 Option 44. Sound Efect (Standard; Music; Speech; Jazz; Pp)...................................................39 Option 45. Volume Offset Left .......................................................................................................39 Option 46. Volume Offset Right ....................................................................................................39 Option 47. Volume Offset Center ..................................................................................................40 Option 48. Volume Offset Rear......................................................................................................40 Option 49. Surround Delay ............................................................................................................40 Option 50. FM Prescale ..................................................................................................................40 Option 51. NICAM Prescale ...........................................................................................................40 Option 52. Scart Input Prescale ....................................................................................................40 Option 53. I2S Prescale..................................................................................................................40 Option 54. Scart Output Prescale .................................................................................................40 Option 55. Speaker Setup ..............................................................................................................41 Option 56. Audio Options Available Or Not .................................................................................41 Option 57. Stereo Threshold .........................................................................................................41 Option 58. MSP Audio Flags..........................................................................................................42 Option 59. NICAM Threshold.........................................................................................................42 Option 60. Power Delay Time ........................................................................................................42 14.4.OPTION TABLE RECOMMENDED VALUES.............................................................................45 14.5.SCREEN ADJUSTMENT (FBT SCREEN) ..................................................................................47 14.6.GEOMETRY ADJUSTMENT .......................................................................................................48 4:3 FORMATS..................................................................................................................................48 16:9 FORMATS................................................................................................................................49 16.BLOCK DIAGRAM ......................................................................................................................57 17.CIRCUIT DIAGRAMS.................................................................................................................58
iii AK45 Service Manual 28/07/2006
1.INTRODUCTION
11AK45 is a 50Hz colour television capable of driving 24" + CRT sizes( beginning from 24" 16:9 up to 33"). The chassis is capable of operation in PAL, SECAM, NTSC (playback) colour standards and multiple transmission standards as B/G, D/K, I/I', and L/L´. Sound system output is supplying 2x10W (10%THD) for left and right outputs of 8ohm speakers. TV supports FASTTEXT. It is possible to decode transmissions including high graphical data. The chassis is equipped with three full EuroScarts, only one of them supports RGB input, one headphone output, one FAV input, one SVHS input (via SCART)
2.TUNER
The hardware and software of the TV is suitable for tuners, supplied by different companies, which are selected from the Service Menu. These tuners can be combined VHF, UHF tuners suitable for CCIR systems B/G, H, L, L´, I/I´, and D/K. The tuning is available through the digitally controlled I2C bus (PLL). Below you will find info on one of the Tuners in use. General description of UV1316: The UV1316 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L', I and I'. The low IF output impedance has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple transient. Features of UV1316: 1. Member of the UV1300 family small sized UHF/VHF tuners 2. Systems CCIR: B/G, H, L, L', I and I'; OIRT: D/K 3. Digitally controlled (PLL) tuning via I2C-bus 4. Off-air channels, S-cable channels and Hyperband 5. World standardized mechanical dimensions and world standard pinning 6. Compact size 7. Complies to "CENELEC EN55020" and "EN55013" Pinning: 1. Gain control voltage (AGC) 2. Tuning voltage 3. I²C-bus address select 4. I²C-bus serial clock 5. I²C-bus serial data 6. Not connected 7. PLL supply voltage 8. ADC input 9. Tuner supply voltage 10. Symmetrical IF output 1 11. Symmetrical IF output 2 : : : : : : 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
3.IF PART (TDA9885/86)
The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal PLL. The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal PLL Both devices can be used for TV, VTR, PC and set-top box applications. The following figure shows the simplified block diagram of the integrated circuit. The integrated circuit comprises the following functional blocks: VIF amplifier, Tuner and VIF-AGC, VIF-AGC detector, Frequency Phase-Locked Loop (FPLL) detector, VCO and divider, Digital acquisition help and AFC, Video demodulator and amplifier, Sound carrier trap, SIF amplifier, SIF-AGC detector, Single reference QSS mixer, AM demodulator, FM demodulator and acquisition help, Audio amplifier and mute time constant, I2C-bus transceivers and MAD (module address), Internal voltage stabilizer.
1 AK45 Service Manual 28/07/2006
4.VIDEO SWITCH TEA6415
In case of three or more external sources are used, the video switch IC TEA6415 is used. The main function of this device is to switch 8 video-input sources on the 6 outputs. Each output can be switched on only one of each input. On each input an alignment of the lowest level of the signal is made (bottom of sync. top for CVBS or black level for RGB signals). Each nominal gain between any input and output is 6.5dB.For D2MAC or Chroma signal the alignment is switched off by forcing, with an external resistor bridge, 5VDC on the input. Each input can be used as a normal input or as a MAC or Chroma input (with external Resistor Bridge). All the switching possibilities are changed through the BUS. Driving 75ohm load needs an external resistor. It is possible to have the same input connected to several outputs.
5.MULTI STANDARD SOUND PROCESSOR
The MSP 34x10G 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. The DBX noise reduction, or alternatively, MICRONAS Noise Reduction (MNR) is performed alignment free. Other processed standards are the Japanese FM-FM multiplex standard (EIA-J) and the FM Stereo Radio standard.
6.SOUND OUTPUT STAGE WITH TDA7269A
The TDA7269A is class AB dual Audio power amplifier assembled in the Multi-watt package, specially designed for high quality sound application as Hi-Fi music centers and stereo TV sets.
7.BERTICAL OUTPUT STAGE WITH STV9379FA
The IC STV9379FA is the vertical deflection booster circuit. Two supply voltages, +14V and 14V are needed to scan the inputs VERT+ and VERT-, respectively. And a third supply voltage, +60V for the flyback limiting are needed. The vertical deflection coil is connected in series between the output and feedback to the input.
8.VIDEO OUTPUT AMPLIFIER TDA6108
The TDA6108Q includes three video output amplifiers is intended to drive the three cathodes of a colour picture tube.
2 AK45 Service Manual 28/07/2006
9.POWER SUPPLY (SMPS)
The DC voltages required at various parts of the chassis are provided by an SMPS transformer controlled by the IC MC44608, which is designed for driving, controlling and protecting switching transistor of SMPS. The transformer generates 145V for FBT input, +/-14V for audio amplifier, 5V and 3.3V stand by voltage and 8V, 12V and 5V supplies for other different parts of the chassis. An optocoupler is used to control the regulation of line voltage and stand-by power consumption. There is a regulation circuit in secondary side. This circuit produces a control voltage according to the changes in 145V DC voltage, via an optocoupler (TCET1102G) to pin3 of the IC. During the switch on period of the transistor, energy is stored in the transformer. During the switch off period energy is fed to the load via secondary winding. By varying switch-on time of the power transistor, it controls each portion of energy transferred to the second side such that the output voltage remains nearly independent of load variations.
10.MICROCONTROLLER SDA55XX
10.1.General Features · Feature selection via special function register · Simultaneous reception of TTX, VPS, PDC, and WSS (line 23) · Supply Voltage 2.5 and 3.3 V · ROM version package PSDIP52-2, PMQFP64-1 · Romless version package PMQFP100-2, PLCC84-2 10.2.External Crystal and Programmable Clock Speed · Single external 6MHz crystal, all necessary clocks are generated internally · CPU clock speed selectable via special function registers. · Normal Mode 33.33 MHz CPU clock, Power Save mode 8.33 MHz 10.3.Microcontroller Features · 8bit 8051 instruction set compatible CPU. · 33.33-MHz internal clock (max.) · 0.360 ms (min.) instruction cycle · Two 16-bit timers · Watchdog timer · Capture compare timer for infrared remote control decoding · Pulse width modulation unit (2 channels 14 bit, 6 channels 8 bit) · ADC (4 channels, 8 bit) · UART (rxd, txd) 10.4.Memory · Non-multiplexed 8-bit data and 16 ... 20-bit address bus (ROMless Version) · Memory banking up to 1Mbyte (Romless version) · Up to 128 Kilobyte on Chip Program ROM · Eight 16-bit data pointer registers (DPTR) · 256-bytes on-chip Processor Internal RAM (IRAM) · 128bytes extended stack memory. · Display RAM and TXT/VPS/PDC/WSS-Acquisition-Buffer directly accessible via MOVX · UP to 16KByte on Chip Extended RAM (XRAM) consisting of; - 1 Kilobyte on-chip ACQ-buffer-RAM (access via MOVX) - 1 Kilobyte on-chip extended-RAM (XRAM, access via MOVX) for user software - 3 Kilobyte Display Memory 10.5.Display Features · ROM Character Set Supports all East and West European Languages in single device · Mosaic Graphic Character Set · Parallel Display Attributes · Single/Double Width/Height of Characters · Variable Flash Rate · Programmable Screen Size (25 Rows x 33...64 Columns) · Flexible Character Matrixes (HxV) 12 x 9...16 · Up to 256 Dynamical Redefinable Characters in standard mode; 1024 Dynamical Redefinable Characters in Enhanced Mode · CLUT with up to 4096 colour combinations 3 AK45 Service Manual 28/07/2006
· Up to 16 Colours per DRCS Character · One out of Eight Colours for Foreground and Background Colours for 1-bit DRCS and ROM Characters · Shadowing · Contrast Reduction · Pixel by Pixel Shiftable Cursor With up to 4 Different Colours · Support of Progressive Scan and 100 Hz. · 3 X 4Bits RGB-DACs On-Chip · Free Programmable Pixel Clock from 10 MHz to 32MHz · Pixel Clock Independent from CPU Clock · Multinorm H/V-Display Synchronization in Master or Slave Mode 10.6.Acquisition Features · Multi-standard Digital Data Slicer · Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+) · Four Different Framing Codes Available · Data Caption only limited by available Memory · Programmable VBI-buffer · Full Channel Data Slicing Supported · Fully Digital Signal Processing · Noise Measurement and Controlled Noise Compensation · Attenuation Measurement and Compensation · Group Delay Measurement and Compensation · Exact Decoding of Echo Disturbed Signals 10.7.Ports · One 8-bit I/O-port with open drain output and optional I2C Bus emulation support (Port0) · Two 8-bit multifunction I/O-ports (Port1, Port3) · One 4-bit port working as digital or analogue inputs for the ADC (Port2) · One 2-bit I/O port with secondary function (P4.2, 4.3, 4.7) · One 4-bit I/O-port with secondary function (P4.0, 4.1, 4.4) (Not available in P-SDIP 52)
11.CLASS AB STEREO HEADPHONE DRIVER TDA1308
The TDA1308 is an integrated class AB stereo headphone driver contained in a DIP8 plastic package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital audio applications.
12.SAW FILTERS
K3953M:
Standard B/G, D/K, I, L/L' Features TV IF filter with Nyquist slopes at 33,90 MHz and 38,90 MHz Constant group delay Suitable for CENELEC EN 55020 Terminals Tinned CuFe alloy Pin configuration 1 Input 2 Input - ground 3 Chip carrier - ground 4 Output 5 Output
K3958M:
Standard B/G, D/K, I, L/L' Features TV IF filter with Nyquist slopes at 33.90 MHz and 38.90 MHz Constant group delay Terminal and Pin configuration are the same with K3953M
4 AK45 Service Manual 28/07/2006
K9356M:
Standard B/G, D/K, I, L Features TV IF audio filter with pass band for sound carriers at 32,40 MHz (D/K, L), 32,90 MHz (I) and 33,40 MHz (B/G) Terminal and Pin configuration are the same with K3953M
K9656M:
Standard B/G, D/K, I, L/L' Features TV IF audio filter with two channels Channel 1 (L') with one pass band for sound carriers at 40,40 MHz (L') and 39,75 MHz (L'- NICAM) Channel 2 (B/G, D/K, L, I) with one pass band for sound carriers between 32,35 MHz and 33,40 MHz Terminal and Pin configuration are the same with K3953M
13.IC DESCRIPTIONS
LM317T MSP3410G TEA6415 TDA7269A 24C08 MC44608 TDA9885T TDA1308T VDP3130Y STV9379FA LM7805/LM7808 SDA55XX TCET1102G
13.1.LM317T
13.1.1.Description The LM317T is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 amps over an output range of 1.25 to 37 volts. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blowout proof. The LM317 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317 can be used as a precision current regulator. 13.1.2.Features · Output Current in Excess of 1.5 A · Output Adjustable between 1.2 V and 37 V · Internal Thermal Overload Protection · Internal Short Circuit Current Limiting Constant with Temperature · Output Transistor SafeArea Compensation · Floating Operation for High Voltage Applications · Available in Surface Mount D2PAK, and Standard 3Lead Transistor Package · Eliminates Stocking many Fixed Voltages
13.2.TDA1308T
13.2.1.General Description The TDA1308 is an integrated class AB stereo headphone driver contained in an SO8 or a DIP8 plastic package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital audio applications. It gets its input from two analog audio outputs (DACA_L and DACA_R) of MSP 34x0G. The gain of the output is adjustable by the feedback resistor between the inputs and outputs. 13.2.2.Features · Wide temperature range · No switch ON/OFF clicks · Excellent power supply ripple rejection 5 AK45 Service Manual 28/07/2006
· Low power consumption · Short-circuit resistant · High performance · high signal-to-noise ratio · High slew rate · Low distortion · Large output voltage swing. 13.2.3.Pinning
SYMBOL OUTA INA(neg) INA(pos) VSS INB(pos) INB(neg) OUTB VDD PIN 1 2 3 4 5 6 7 8 DESCRIPTION Output A Inverting input A Non-inverting input A Negative supply Non-inverting input B Inverting input B Output B Positive supply
13.3.MSP34X0G (MSP3410G)
13.3.1.Description The MSP 34x0G 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. Figure shows a simplified functional block diagram of the MSP 34x0G.
This new generation of TV sound processing ICs now includes versions for processing the multi channel television sound (MTS) signal conforming to the standard recommended by the Broadcast Television Systems Committee (BTSC). The DBX noise reduction, or alternatively, MICRONAS Noise Reduction (MNR) is performed alignment free. Other processed standards are the Japanese FM-FM multiplex standard (EIA-J) and the FM Stereo Radio standard. Current ICs have to perform adjustment procedures in order to achieve good stereo separation for BTSC and EIA-J. The MSP 34x0G has optimum stereo performance without any adjustments. All MSP 34x0G versions are pin and software downward compatible to the MSP34x0D. The MSP34x0G further simplifies controlling software. Standard selection requires a single I2C transmission only. The MSP 34x0G has built-in automatic functions: The IC is able to detect the actual sound standard automatically (Automatic Standard Detection). Furthermore, pilot levels and identification signals can be evaluated internally with subsequent switching between mono/stereo/bilingual; no I2C interaction is necessary (Automatic Sound Selection). 6 AK45 Service Manual 28/07/2006
13.3.2.Features Standard Selection with single I2C transmission Automatic Standard Detection of terrestrial TV standards Automatic Sound Selection (mono/stereo/bilingual), new registers MODUS, STATUS Two selectable sound IF (SIF) inputs Automatic Carrier Mute function Interrupt output programmable (indicating status change) Loudspeaker / Headphone channel with volume, balance, bass, treble, loudness AVC: Automatic Volume Correction Subwoofer output with programmable low-pass and complementary high-pass filter 5-band graphic equalizer for loudspeaker channel Spatial effect for loudspeaker channel Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART outputs Complete SCART in/out switching matrix Two I2S inputs; one I2S output Dolby Pro Logic with DPL 351xA coprocessor All analog FM-Stereo A2 and satellite standards; AM-SECAM L standard Simultaneous demodulation of (very) high-deviation FM-Mono and NICAM Adaptive deemphasis for satellite (Wegener-Panda, acc. to ASTRA specification) ASTRA Digital Radio (ADR) together with DRP 3510A All NICAM standards Korean FM-Stereo A2 standard 13.3.3.Pin connections NC = not connected; leave vacant LV = if not used, leave vacant X = obligatory; connect as described in circuit diagram DVSS: if not used, connect to DVSS AHVSS: connect to AHVSS
Pin No. PLCC 68-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 PSDIP 64-pin 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 64 63 62 61 60 59 58 57 PSDIP 52-pin 14 13 12 11 10 9 8 7 6 5 4 3 2 1 52 51 50 49 48 47 46 PQFP 80-pin 9 8 7 6 5 4 3 2 1 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 PLQFP 64-pin 8 7 6 5 4 3 2 1 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 Pin Name Type Connection (if not used) LV LV LV LV LV LV LV X X LV X X LV LV LV LV LV LV LV X X X AVSS via 56 pF/LV AVSS via 56 pF/LV LV X X Short Description
ADR_WS NC ADR_DA I2S_DA_IN1 I2S_DA_OUT I2S_WS I2S_CL I2C_DA I2C_CL NC STANDBYQ ADR_SEL D_CTR_I/O_0 D_CTR_I/O_1 NC NC NC AUD_CL_OUT TP XTAL_OUT XTAL_IN TESTEN ANA_IN2+ ANA_INANA_IN1+ AVSUP AVSUP
OUT OUT IN OUT IN/OUT IN/OUT IN/OUT IN/OUT IN IN IN/OUT IN/OUT
OUT OUT IN IN IN IN IN
ADR word strobe Not connected ADR Data Output 2 I S1 data input 2 I S data output 2 I S word strobe 2 I S clock 2 I C data 2 I C data Not connected Stand-by (low-active) 2 I C bus address select D_CTR_I/O_0 D_CTR_I/O_1 Not connected Not connected Not connected Audio clock output (18.432 MHz) Test pin Crystal oscillator Crystal oscillator Test pin IF Input 2 (can be vacant, only if IF input also not in use) IF common (can be vacant, only if IF input also not in use) IF input 2 Analog power supply 5v Analog power supply 5v
left 1 is left 1 is
7 AK45 Service Manual 28/07/2006
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 57 58 59 60 61 62 63 64 65 66 67 68
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
NC NC AVSS AVSS MONO_IN NC VREFTOP SC1_IN_R SC1_IN_L ASG1 SC2_IN_R SC2_IN_L ASG2 SC3_IN_R SC3_IN_L ASG4 SC4_IN_R SC4_IN_L NC AGNDC AHVSS AHVSS NC NC CAPL_M AHVSUP CAPL_A SC1_OUT_L SC1_OUT_R VREF1 SC2_OUT_L SC2_OUT_R NC NC DACM_SUB NC DACM_L DACM_R VREF2 DACA_L DACA_R NC NC RESETQ NC NC NC I2S_DA_IN2 DVSS DVSS DVSS DVSUP DVSUP DVSUP ADR_CL
IN
LV LV X X LV LV X LV LV AHVSS LV LV AHVSS LV LV AHVSS LV LV LV or AHVSS X X X LV LV X X X LV LV X LV LV LV LV LV LV LV LV X LV LV LV LV X LV LV LV LV X X X X X X LV
IN IN IN IN IN IN IN IN
OUT OUT OUT OUT
OUT OUT OUT OUT OUT
IN
IN
OUT
Not connected Not connected Analog ground Analog ground Mono input Not connected Reference voltage IF A/D converter SCART 1 input, right SCART 1 input, left Analog Shield Ground 1 SCART 2 input, right SCART 2 input, left Analog Shield Ground 2 SCART 3 input, right SCART 3 input, left Analog Shield Ground 4 SCART 4 input, right SCART 4 input, left Not connected Analog reference voltage Analog ground Analog ground Not connected Not connected Volume capacitor MAIN Analog power supply 8V Volume capacitor AUX SCART output 1, left SCART output 1, right Reference ground 1 SCART output 2, left SCART output 2, right Not connected Not connected Subwoofer output Not connected Loudspeaker out, left Loudspeaker out, right Reference ground 2 Headphone out, left Headphone out, right Not connected Not connected Power-on-reset Not connected Not connected Not connected 2 I S2-data input Digital ground Digital ground Digital ground Digital power supply 5V Digital power supply 5V Digital power supply 5V ADR clock
13.4.VDP313xY
13.4.1.Introduction The VDP 313xY is a video IC family of high-quality single-chip video processors. Modular design and a sub-micron technology allow the economic integration of features in all classes of TV sets. The VDP 313xY family is based on the VDP 31xxB including YCRCB inputs for DVD component signals. The VDP 313xY includes complete video, display and deflection processing. All processing is done digitally, the video frontend and video backend are interfacing to the analog world. Most functions of the VDP can be controlled by software via I2C-Bus interface
8 AK45 Service Manual 28/07/2006
13.4.2.Features Video Decoding and Processing four CVBS, one S-VHS input, one YC R C B component input integrated high-quality A/D converters and associated clamp and AGC circuits adaptive 2H comb filter Y/C separator multistandard colour decoder PAL/NTSC/SECAM including all substandards multistandard sync decoder automatic standard recognition black-line detector linear horizontal scaling (0.25...4), as well as nonlinear horizontal scaling "Panoramavision" black-level expander dynamic peaking soft limiter (gamma correction) colour transient improvement RGB Processing and Deflection programmable RGB matrix two analog RGB / Fastblank inputs half-contrast switch picture frame generator scan velocity modulation output high-performance H/V deflection separate ADC for tube measurements EHT compensation angle and bow correction one 20.25 MHz crystal, few external components I2C-Bus Interface 64-pin PSDIP package 13.4.3.Pin Connections and short descriptions NC = not connected X = obligatory; connect as described in circuit diagram OUT = Output
Pin no PSDIP 64-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 Pin name TEST RESQ SCL SDA GNDD HCS FSY CSY VS INTLC VPROT SAFETY HFLB GNDD VSUPD GNDD VSUPD P0 P1 P2 P3 P4 P5 P6 Type IN IN IN/OUT IN/OUT SUPPLY IN OUT OUT OUT OUT IN IN IN SUPPLY SUPPLY SUPPLY SUPPLY IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT Connection (if not used) GNDD X X X X LV LV LV LV LV GNDAB GNDAB HOUT X X X LV LV LV GNDD GNDD GNDD GNDD GNDD
LV = if not used, leave vacant IN = Input SUPPLY = Supply Pin
Short description Test Input Reset Input I2C Bus Clock I2C Bus Data Digital Ground Half Contrast Switch Input Front Sync Output Composite Sync Output Vertical Sync Output (=VS Bit of MSY for TPU) Intefrace Control Output Vertical Protection Input Safety Input Horizontal Flyback Input Digital Ground Digital Supply Voltage (3.3V) Digital Ground Digital Supply Voltage (3.3V) Port 1, Bit 0 Port 1, Bit 1 Port 1, Bit 2 Port 1, Bit 3 Port 1, Bit 4 Port 1, Bit 5 Port 1, Bit 6
9 AK45 Service Manual 28/07/2006
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 57 58 59 60 61 62 63 64
GNDD RSW2 RSW1 SENSE GNDM VERTQ VERT E/w XREF SVMOUT GNDAB VSUPAB ROUT GOUT BOUT VRD RIN GIN BIN FBLIN RIN2 GIN2 BIN2 FBLIN2 CLK20 HOUT XTAL 1 XTAL 2 CIN 2/CRIN CBIN GNDAF SGND VRT VSUPAF VOUT CIN1 VIN1 VIN2 VIN3 VIN4
SUPPLY OUT OUT IN SUPPLY OUT OUT OUT IN OUT SUPPLY SUPPLY OUT OUT OUT IN IN IN IN IN IN IN IN IN OUT OUT IN OUT IN SUPPLY IN IN SUPPLY OUT IN IN IN IN IN
X GNDAB GNDAB GNDAB X LV LV LV X VSUPAB X X VSUPAB VSUPAB VSUPAB X GNDAB GNDAB GNDAB GNDAB GNDAB GNDAB GNDAB GNDAB LV X X X LV LV X GNDAF X X LV VRT VRT VRT VRT VRT
Digital Ground Range Switch 2 for Measurement ADC Range Switch 1 for Measurement ADC Sense ADC Input Ground, MADC input Inverted Vertical Sawtooth Output Vertical Sawtooth Output Vertical Parabola Output Reference Input for RGB DACs Analog Scan Velocity Modulation Output Analog Ground Backend Analog Supply Voltage (5.0V) Backend Analog Red Output Analog Green Output Analog Blue Output DAC Reference Analog Red Input Analog Green Input Analog Blue Input Fast Blank Input Analog Red Input2 Analog Green Input2 Analog Blue Input2 Fast Blank Input2 20.25 MHz System Clock Output Horizontal Drive Output Analog Crystal Input Analog Crystal Output Analog Chroma 2/Component CR Input Component CB Input Analog Ground Frontend Signal Ground for Analog Input Reference Voltage Top, Video ADC Analog Supply Voltage (5.0V) Frontend Analog Video Output Analog Chroma 1 Input Analog Video 1 Input Analog Video 2 Input Analog Video 3 Input Analog Video 4 Input
13.5.TEA6415C
13.5.1.General Description The main function of the IC is to switch 8 video input sources on 6 outputs. Each output can be switched on only one of each input. On each input an alignment of the lowest level of the signal is made (bottom of synch. top for CVBS or black level for RGB signals). Each nominal gain between any input and output is 6.5dB. For D2MAC or Chroma signal the alignment is switched off by forcing, with an external resistor bridge, 5 VDC on the input. Each input can be used as a normal input or as a MAC or Chroma input (with external resistor bridge). All the switching possibilities are changed through the BUS. Driving 75 load needs an external transistor. It is possible to have the same input connected to several outputs. The starting configuration upon power on (power supply: 0 to 10V) is undetermined. In this case, 6 words of 16 bits are necessary to determine one configuration. In other case, 1 word of 16 bits is necessary to determine one configuration. 13.5.2.Features · 20MHz Bandwidth · Cascadable with another TEA6415C (Internal address can be changed by pin 7 voltage) · 8 Inputs (CVBS, RGB, MAC, CHROMA,...) · 6 Outputs · Possibility of MAC or chroma signal for each input by switching-off the clamp with an external resistor bridge · Bus controlled 10 AK45 Service Manual 28/07/2006
· 6.5dB gain between any input and output · 55dB crosstalk at 5mHz · Fully ESD protected 13.5.3.Pinning 1. Input 2. Data : 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. Input Clock Input Input Prog Input Vcc Input Input Ground Output Output Output Output Output Output Ground Input
: Max : 2Vpp, Input Current: 1mA, Max : 3mA Low level : -0.3V Max: 1.5V, High level : 3.0V Max : Vcc+0.5V : Max : 2Vpp, Input Current: 1mA, Max : 3mA : Low level : -0.3V Max: 1.5V, High level : 3.0V Max : Vcc+0.5V : Max : 2Vpp, Input Current: 1mA, Max : 3mA : Max : 2Vpp, Input Current: 1mA, Max : 3mA : Max : 2Vpp, Input Current: 1mA, Max: 3mA 12V : Max : 2Vpp, Input Current: 1mA, Max : 3mA : Max : 2Vpp, Input Current: 1mA, Max : 3mA 5.5Vpp, 5.5Vpp, 5.5Vpp, 5.5Vpp, 5.5Vpp, 5.5Vpp, : Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp : 1mA, Max : 3mA
:
: : : : : :
Max : 2Vpp, Input Current
13.6.STV9379FA
13.6.1.Description Designed for monitors and high performance TVs, the STV9379FA vertical deflection booster can handle flyback voltage up to 90V. Further to this, it is possible to have a flyback voltage, which is more than the double of the supply (Pin 2). This allows to decrease the power consumption, or to decrease the flyback time for a given supply voltage. The STV9379FA operates with supplies up to 42V and provides up to 2.6APP output current to drive the yoke. The STV9379FA is offered in HEPTAWATT package. 13.6.2.Features Power Amplifier Thermal Protection Output Current Up To 2.6APP Flyback Voltage Up To 90V (on Pin 5) Suitable For DC Coupling Application External Flyback Supply 13.6.3.Pinning Pin1 : Output Stage Supply Pin2 : Output Pin3 : GND or Negative Supply Pin4 : Flyback Supply Pin5 : Supply Voltage Pin6 : Inverting Input Pin7 : Non-inverting Input
11 AK45 Service Manual 28/07/2006
13.7.TDA7269A
13.7.1.Description The TDA7269A is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application as Hi-Fi music centers and stereo TV sets. 13.7.2.Features Wide Supply Voltage Range Up To ±20V Split Supply High Output Power 14 + 14W @THD =10%, RL =8,VS= +16V No Pop at Turn-On/Off Mute (Pop Free) Stand-By Feature (Low Iq) Short Circuit Protection To Gnd Thermal Overload Protection
13.8.LM7800 (LM7805/LM7808)
13.8.1.Description The L7800 series of three-terminal positive regulators is available in TO-220 TO-220FP TO-3 and D 2 PAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shutdown and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. 13.8.2.Features Output Current Up To 1.5 A Output Voltages of 5; 5.2; 6; 8; 8.5; 9; 12; 15; 18; 24V Thermal Over load protection Short Circuit Protection Output Transition SOA Protection
13.9.AT24C08
13.9.1.Description The AT24C01A/02/04/08/16 provides 1024/2048/4096/8192/16384 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as 128/256/512/1024/2048 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AT24C01A/02/04/08/16 is available in space-saving 8-pin PDIP, (AT24C01A/02/04/08/16), 8-lead TSSOP (AT24C01A/02/04/08/16) and 8-lead JEDEC SOIC (AT24C01A/02/04/08/16) packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 5.0V (4.5V to 5.5V), 2.7V (2.7V to 5.5V), 2.5V (2.5V to 5.5V) and 1.8V (1.8V to 5.5V) versions. 13.9.2.Features · Low-voltage and Standard-voltage Operation 5.0 (V CC = 4.5V to 5.5V) 2.7 (V CC = 2.7V to 5.5V) 2.5 (V CC = 2.5V to 5.5V) 1.8 (V CC = 1.8V to 5.5V) · Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K), 1024 x 8 (8K) or 2048 x 8 (16K) · 2-wire Serial Interface · Schmitt Trigger, Filtered Inputs for Noise Suppression · Bi-directional Data Transfer Protocol · 100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility · Write Protect Pin for Hardware Data Protection 12 AK45 Service Manual 28/07/2006
· 8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes · Partial Page Writes are Allowed · Self-timed Write Cycle (10 ms max) · High-reliability Endurance: 1 Million Write Cycles Data Retention: 100 Years · Automotive Grade and Extended Temperature Devices Available · 8-lead JEDEC SOIC, 8-pin PDIP and 8-lead TSSOP Packages 13.9.3.Pin Configurations
Pin name A0-A2 SDA SCL WP NC Function Address Inputs Serial Data Serial Clock Input Write Protect No Connect
13.10.SDA5555
13.10.1.General definition The SDA55XX is a single chip teletext decoder for decoding World System Teletext data as well as Video Programming System (VPS), Program Delivery Control (PDC), and Wide Screen Signalling (WSS) data used for PAL plus transmissions (Line 23). The device also supports Closed caption acquisition and decoding. The device provides an integrated general-purpose, fully 8051-compatible Microcontroller with television specific hardware features. Microcontroller has been enhanced to provide powerful features such as memory banking, data pointers, and additional interrupts etc. The on-chip display unit for displaying Level 1.5 teletext data can also be used for customer defined on screen displays. Internal XRAM consists of up to 16 Kbytes. Device has an internal ROM of up to 128 KBytes. ROMless versions can access up to 1 MByte of external RAM and ROM. The SDA 55XX supports a wide range of standards including PAL, NTSC and contains a digital slicer for VPS, WSS, PDC, TTX and Closed Caption, an accelerating acquisition hardware module, a display generator for Level 1.5 TTX data and powerful On screen Display capabilities based on parallel attributes, and Pixel oriented characters (DRCS). 13.10.2.Features General · Feature selection via special function register · Simultaneous reception of TTX, VPS, PDC, and WSS (line 23) · Supply Voltage 2.5 and 3.3 V · ROM version package PSDIP52-2, PMQFP64-1 · Romless version package PMQFP100-2, PLCC84-2 External Crystal and Programmable Clock Speed · Single external 6MHz crystal, all necessary clocks are generated internally · CPU clock speed selectable via special function registers. · Normal Mode 33.33 MHz CPU clock, Power Save mode 8.33 MHz Microcontroller Features · 8bit 8051 instruction set compatible CPU. · 33.33-MHz internal clock (max.) · 0.360ms (min.) instruction cycle · Two 16-bit timers · Watchdog timer · Capture compare timer for infrared remote control decoding · Pulse width modulation unit (2 channels 14 bit, 6 channels 8 bit) · ADC (4 channels, 8 bit) · UART
13 AK45 Service Manual 28/07/2006
Memory · Non-multiplexed 8-bit data and 16 ... 20-bit address bus (ROMless Version) · Memory banking up to 1Mbyte (Romless version) · Up to 128 Kilobyte on Chip Program ROM · Eight 16-bit data pointer registers (DPTR) · 256-bytes on-chip Processor Internal RAM (IRAM) · 128bytes extended stack memory. · Display RAM and TXT/VPS/PDC/WSS-Acquisition-Buffer directly accessible via MOVX · UP to 16KByte on Chip Extended RAM (XRAM) consisting of; - 1 Kilobyte on-chip ACQ-buffer-RAM (access via MOVX) - 1 Kilobyte on-chip extended-RAM (XRAM, access via MOVX) for user software - 3 Kilobyte Display Memory Display Features · ROM Character Set Supports all East and West European Languages in single device · Mosaic Graphic Character Set · Parallel Display Attributes · Single/Double Width/Height of Characters · Variable Flash Rate · Programmable Screen Size (25 Rows x 33...64 Columns) · Flexible Character Matrixes (HxV) 12 x 9...16 · Up to 256 Dynamical Redefinable Characters in standard mode; 1024 Dynamical Redefinable Characters in Enhanced Mode · CLUT with up to 4096 colour combinations · Up to 16 Colours per DRCS Character · One out of Eight Colours for Foreground and Background Colours for 1-bit DRCS and ROM Characters · Shadowing · Contrast Reduction · Pixel by Pixel Shiftable Cursor With up to 4 Different Colours · Support of Progressive Scan and 100 Hz. · 3 X 4Bits RGB-DACs On-Chip · Free Programmable Pixel Clock from 10 MHz to 32MHz · Pixel Clock Independent from CPU Clock · Multinorm H/V-Display Synchronization in Master or Slave Mode Acquisition Features · Multistandard Digital Data Slicer · Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+) · Four Different Framing Codes Available · Data Caption only Limited by available Memory · Programmable VBI-buffer · Full Channel Data Slicing Supported · Fully Digital Signal Processing · Noise Measurement and Controlled Noise Compensation · Attenuation Measurement and Compensation · Group Delay Measurement and Compensation · Exact Decoding of Echo Disturbed Signals Ports · One 8-bit I/O-port with open drain output and optional I2C Bus emulation support (Port 0) · Two 8-bit multifunction I/O-ports (Port 1, Port 3) · One 4-bit port working as digital or analog inputs for the ADC (Port 2) · One 2-bit I/O port with secondary functions (P4.2, 4.3, 4.7) · One 4-bit I/O-port with secondary function (P4.0, 4.1, 4.4) (Not available in P-SDIP 52)
13.11.MC44608
13.11.1.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 14 AK45 Service Manual 28/07/2006
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 13.11.2.General Features · Flexibility · Duty Cycle Control · Under voltage Lockout with Hysteresis · On Chip Oscillator Switching Frequency 40, or 75kHz · Secondary Control with Few External Components Protections · Maximum Duty Cycle Limitation · Cycle by Cycle Current Limitation · Demagnetization (Zero Current Detection) Protection · "Over VCC Protection" Against Open Loop · Programmable Low Inertia Over Voltage Protection Against Open Loop · Internal Thermal Protection GreenLineTM Controller · Pulsed Mode Techniques for a Very High Efficiency Low Power Mode · Lossless Startup · Low dV/dT for Low EMI Radiations 13.11.3.Pin Connections
13.11.4.Pin Function description
Pin 1 2 Name Demag ISENSE Description The Demag pin offers 3 different functions: Zero voltage crossing detection (50mV), 24mA current detection and 120mA current detection. The 24mA level is used to detect the secondary reconfiguration status and the 120mA level to detect an Over Voltage status called Quick OVP. The Current Sense pin senses the voltage developed on the series resistor inserted in the source of the power MOSFET. When I sense reaches 1V, the Driver output (pin 5) is disabled. This is known as the Over Current Protection function. A 200mA current source is flowing out of the pin 3 during the startup phase and during the switching phase in case of the Pulsed Mode of operation. A resistor can be inserted between the sense resistor and the pin 3; thus a programmable peak current detection can be performed during the SMPS standby mode. A feedback current from the secondary side of the SMPS via the optocoupler is injected into this pin. A resistor can be connected between this pin and GND to allow the programming of the Burst duty cycle during the Standby mode. This pin is the ground of the primary side of the SMPS. The current and slew rate capability of this pin are suited to drive Power MOSFETs. This pin is the positive supply of the IC. The driver output gets disabled when the voltage becomes higher than 15V and the operating range is between 6.6V and 13V. An intermediate voltage level of 10V creates a disabling condition called Latched Off phase. This pin is to provide isolation between the Vi pin 8 and the VCC pin 6. This pin can be directly connected to a 500V voltage source for startup function of the IC. During the Startup phase a 9 mA current source is internally delivered to the VCC pin 6 allowing a rapid charge of the VCC capacitor. As soon as the IC startsup, this current source is disabled.
3 4 5 6 7 8
Control Input Ground Driver VCC
Vi
15 AK45 Service Manual 28/07/2006
13.12.TCET1102G
13.12.1.Description The TCET110/ TCET2100/ TCET4100 consists of a phototransistor optically coupled to a gallium arsenide infrared-emitting diode in a 4-lead up to 16-lead plastic dual inline package. The elements are mounted on one lead frame using a coplanar technique, providing a fixed distance between input and output for highest safety requirements. 13.12.2.Applications Circuits for safe protective separation against electrical shock according to safety class II (reinforced isolation): For appl. class I IV at mains voltage 300 V For appl. class I III at mains voltage 600 V According to VDE 0884, table 2, suitable for: Switch-mode power supplies, line receiver, computer peripheral interface, microprocessor system interface. 13.12.3.Features VDE 0884 related features: Rated impulse voltage (transient overvoltage) V IOTM = 8 kV peak Isolation test voltage (partial discharge test voltage) V pd = 1.6 kV Rated isolation voltage (RMS includes DC) V IOWM = 600 V RMS (848 V peak) Rated recurring peak voltage (repetitive) V IORM = 600 V RMS General features: CTR offered in 9 groups Isolation materials according to UL94-VO Pollution degree 2 (DIN/VDE 0110 / resp. IEC 664) Climatic classification 55/100/21 (IEC 68 part 1) Special construction: Therefore, extra low coupling capacity of typical 0.2pF, high Common Mode Rejection Low temperature coefficient of CTR G = Leadform 10.16 mm; provides creepage distance > 8 mm, for TCET2100/ TCET4100 optional; suffix letter `G' is not marked on the optocoupler Coupling System U
13.13.TDA9885T
13.13.1.General Description
The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal PLL.
13.13.2.Features
· 5 V supply voltage · Gain controlled wide-band Vision Intermediate Frequency (VIF) amplifier (AC-coupled) · Multistandard true synchronous demodulation with active carrier regeneration (very linear demodulation, good intermodulation figures, reduced harmonics, excellent pulse response) · Gated phase detector for L/L accent standard · Fully integrated VIF Voltage Controlled Oscillator (VCO), alignment-free; frequencies switchable for all negative and positive modulated standards via I2C-bus · Digital acquisition help, VIF frequencies of 33.4, 33.9, 38.0, 38.9, 45.75 and 58.75 MHz · 4 MHz reference frequency input [signal from Phase-Locked Loop (PLL) tuning system] or operating as crystal oscillator · VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector for negative modulated signals and as a peak white detector for positive modulated signals · Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit digital-to-analog converter; AFC bits via I2C -bus readable · TakeOver Point (TOP) adjustable via I2C-bus or alternatively with potentiometer · Fully integrated sound carrier trap for 4.5, 5.5, 6.0 and 6.5 MHz, controlled by FM-PLL oscillator · Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode (PLL controlled)
16 AK45 Service Manual 28/07/2006
· SIF AGC for gain controlled SIF amplifier; single reference QSS mixer able to operate in high performance single reference QSS mode and in intercarrier mode, switchable via I2C-bus · AM demodulator without extra reference circuit · Alignment-free selective FM-PLL demodulator with high linearity and low noise · I2C-bus control for all functions · I2C-bus transceiver with pin programmable Module Address (MAD).
13.13.3.Pinning SYMBOL VIF1
VIF2 OP1 FMPLL DEEM AFD DGND AUD TOP SDA SCL SIOMA n.c. TAGC REF VAGC CVBS AGND VPLL
VP
AFC OP2 SIF1 SIF2
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
DESCRIPTION
VIF differential input 1 VIF differential input 2 output 1 (open-collector) FM-PLL for loop filter de-emphasis output for capacitor AF decoupling input for capacitor digital ground audio output tuner AGC TakeOver Point (TOP) I2C-bus data input/output I2C-bus clock input sound intercarrier output and MAD select not connected tuner AGC output 4 MHz crystal or reference input VIF-AGC for capacitor; note 1 video output analog ground VIF-PLL for loop filter supply voltage (+5 V) AFC output output 2 (open-collector) SIF differential input 1 SIF differential input 2
13.14.PI5V330
13.14.1.General Description The PI5V330 is well suited for video applications when switching composite or RGB analog. A picturein-picture application will be described in this brief. The pixel-rate creates video overlays so two or more pictures can be viewed at the same time. An inexpensive NTSC titler can be implemented by superimposing the output of a character generator on a standard composite video background.
17 AK45 Service Manual 28/07/2006
14.AK45 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS
14.1.SERVICE MENU All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the MAIN MENU and then press the digits 4, 7, 2 and 5 respectively or press MUTE and INFO buttons at the same time. The following first menu appears on the screen.
SERVICE ADJUST... OPTIONS... AK45JA0XX AK45JA0XX
You can select Adjust or Options items by pressing Up/Down buttons. Selected parameter will be highlighted. Inorder to enter the selected parameter, press Left or Right button. To exit the service menu press MENU button. Entire service menu parameters of AK45 CHASSIS are listed below. 14.2.ADJUST MENU Select the parameter by pressing up/down buttons. Adjust the parameter by pressing Left/Right buttons. In ADJUST menu, changed values are stored automatically.
ADJUST... 000 001 002 003 004 005 006 007 008 009 255 036 019 020 030 026 003 004 005 005
White Point Red, White Point Green, White Point Blue: Not used. AGC Apply PAL BG signal, VHF-3 Channel-12 and 60dBV signal level. Adjust AGC (Automatic Gain Control) item by pressing Left/Right buttons till the voltage at AGC point (pin1 of the tuner) becomes 3.0 volts. If PLL negative Not used. If PLL pozitive Not used. Y-Delay Enter a PAL B/G colour and black-white bar test pattern via RF. Adjust Y-Delay for 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.
18 AK45 Service Manual 28/07/2006
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. 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. Y-Delay other Not used. Vertical Pozition Offset This value is fixed (127) Vertical Pozition Offset This value is fixed (127) Horizontal Pozition Offset This value is fixed (127) Horizontal Pozition Offset This value is fixed (127) Vertical Blank Start This register will be used only at 4:3 tube for 16:9 mode adjustment. It adjusts the vertical blank start position. Vertical Blank Stop This register will be used only at 4:3 tube for 16:9 mode adjustment. It adjusts the vertical blank stop position. Angle Change Angle by pressing Left/Right buttons till the vertical lines of the crosshatch pattern become completely perpendicular to horizontal lines without any angle of vertical deviation. Check and readjust ANGLE item if the adjustment becomes improper after some other geometric adjustments are done. Bow Change Bow by pressing Left/Right buttons till the vertical lines especially ones close to the left and right sides will of equal and symmetrical bending, i.e. they together will neither be towards left side nor right side. Check and readjust BOW item if the adjustment becomes improper after some other geometric adjustments are done. 4:3 Horizontal Blank Start This register will be used only at 16:9 tube for 4:3 mode adjustment. It adjusts the horizontal blank start position. 4:3 Horizontal Blank Stop This regis