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CXA 2040AQ

I2C Bus-Compatible Video Switch

General Description

The CXA2040AQ is an I2C bus-compatible 5-input,3-output video switch for TVs.

Features
•

Serial data control via I2C bus

•

5 composite video input systems

•

2 Y/C (S terminal) input systems

•

3 composite video output systems

•

1 Y/C (S terminal) output system

•

Input can be selected independently for each output system.

•

SYNC_ID function for CV1 system input

•

Built-in 6dB amplifier for CVOUT2 system output

•

Built-in Y/C MIX circuit

•

Slave address can be changed (90H/92H).

•

High impedance maintained by I2C bus line (SDA, SCL) even when power is OFF.

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Summary of Contents for D5

Page 1: ...Service Manual DVD COMBO TV D5 ...

Page 2: ...l Features 5 Remote Control 6 Preperations 7 Operating the TV 8 Block Diagram of D5 Chassis 13 IC Datasheets Specs 14 Pin Voltages of IC s 23 Oscillograph of Some IC 26 Electrical and Service Adjustments 29 Channel Frequency Tables 32 Part List 34 Circuit Diagrams Attached ...

Page 3: ...f the plug 2 Turn the receiver s power switch on 3 Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the receiver such as screw heads aerials connectors control shafts etc When the exposed metallic part a return path to the chassis the reading should be between 4Mohm and the 20Mohm When the exposed metal does not have a return path...

Page 4: ... 28 4 3 29 0 0 5 KV 28 16 9 29 32 Super Flat 29 5 0 5 KV 32 Pure Flat 33 Focus voltage 25 6 38 of EHT Grid 2 voltage 0 1400 V Heater voltage 6 2 0 2 Vrms Video Audio Terminals AV1 2 IN Video 1 Vpp 75 Ohm Audio 0 5 Vrms 10 Kohm AV1 IN RGB AV1 2 OUT Video 1 Vpp 75 Ohm Audio 0 5 Vrms 1 Kohm AV2 IN RCA Video 1 Vpp 75 Ohm Audio 0 5 Vrms 10 Kohm Operating temperature 0 45 Degrees Safety IEC 65 BS P2N X ...

Page 5: ...r TV will automatically switch off if it s been programmed from 5 to 120 minutes and it will automatically switch to Stand by five minutes after a channel ceases to transmit Multi language menu system Headphone socket Scart Socket Video cassette recorder satellite receiver video disc player DVD TV games or a home computer can be connected to this AV socket with an appropriate connecting cable Nami...

Page 6: ... 6 4 REMOTE CONTROL ...

Page 7: ...upplied into the compartment on the rear of the remote control ensure you follow the polarity diagram inside the compartment 4 4 PIN CONNECTIONS FOR SCART SOCKET 1 Audio output Right 11 RGB input Green 2 Audio input Right 12 3 Audio output Left Mono 13 Red ground 4 Audio ground 14 Ground 5 Blue ground 15 RGB input Red 6 Audio input Left Mono 16 Blanking Signal 7 RGB input Blue 17 Video output grou...

Page 8: ...ill decrease the volume without restoring But pressing the VOL button will increase the volume without restoring Swap Allows you to swap between the program you are watching and the last selected program i e If you were watching Program 1 and change to Program 11 press the Swap button to go back to Program 1 Press it again to return to Program 11 Info Press the P100 button and the program number a...

Page 9: ...ch finds a strong channel signal it will stop searching The picture will appear Identify which channel you are watching BBC 1 ITV 1 etc and decide which program number you want it to be Use the Program button to select PROGRAM NUMBER Use the buttons to select the program number Use the Program button to select Store Press the OK button and STORED will appear on the STORE line You have now stored t...

Page 10: ...range the programmes in the required sequence please refer to programme organising Fine tuning Although the search and Autoprogram will automatically try and tune to the best reception in areas of poor reception a bit of fine tuning may be required In the SETUP menu use the Program buttons to select FINE TUNING Use the Volume up and Volume down buttons to fine tune When you have finished use the P...

Page 11: ...hat the two speakers in the TV are further apart than they really are To save your settings select STORE and press the OK button STORED will be displayed Press the TV Menu button to go back to the previous menu AVL TV transmitters have different sound levels AVL automatic volume limiting maintains the same sound level as you switch from program to program To supply this press Volume or button and ...

Page 12: ... the button to increase the time period in 5 minute steps from 5 minutes to a maximum of 2 hours and to switch the sleep timer off The countdown will start immediately To cancel the sleep timeselect OFF in SLEEP TIMER row by using Volume buttons On Timer Your TV set has a feature which allows the TV to be turned on with your selected program after a pre selected period ranging from 5 minutes to 12...

Page 13: ...CEIVER DVD KEYBOARD AUDIO PROCESSOR IC202 MSP3410G AUDIO PROCESSOR IC 203 TDA 7442 14 ONLY 21 ONLY POWER AMP IC 301 TDA 7266S for 14 TDA 7266 for 21 AOUT SCART 1 SCART 2 Front AV Ro Lo Lo R G B DVD FFC CONNECTOR TR 602 220V AC in 21 130 V 14 111 V 9 V 12 V 14 V 9 V 8 V 5 V HORIZONTAL DEFLECTION 2SD2499 FBT TR 501 195 V EHT CXA 2040AQ VIDEO SWITCH IC 160 TDA 8601 RGB SWITCH DVD Cr DVD Y DVD Cb EXT ...

Page 14: ...selection of the CVBS signals Integrated chrominance trap circuit Integrated luminance delay line with adjustable delay time Picture improvement features with peaking with switchable centre frequency depeaking variable positive negative overshoot ratio and video dependent coring and white stretching Switchable group delay correction in the CVBS path Integrated chroma band pass filter with switchab...

Page 15: ...mized µ processor throughput Automatic detection of FASTEXT transmission Real time packet 26 engine in Hardware for processing accented G2 and G3 characters Signal quality detector for video and WST VPS data types Comprehensive teletext language coverage Full Field and Vertical Blanking Interval VBI datacapture of WST data Display Teletext and Enhanced OSD modes Features of level 1 5 WST and US Cl...

Page 16: ... 16 ...

Page 17: ... 17 ...

Page 18: ...natively Micronas Noise Reduction MNR is performed 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 3410G has optimum stereo performance without any adjustments The MSP 3410G has built in automatic functions The IC is able...

Page 19: ...e video input systems 2 Y C S terminal input systems 3 composite video output systems 1 Y C S terminal output system Input can be selected independently for each output system SYNC_ID function for CV1 system input Built in 6dB amplifier for CVOUT2 system output Built in Y C MIX circuit Slave address can be changed 90H 92H High impedance maintained by I2C bus line SDA SCL even when power is OFF ...

Page 20: ...andcastle the video signal is clamped with an active clamp during the sync pulse LA7840 Vertical Deflection Output Circuit General Description The LA7840 is a vertical deflection output IC for TVs and CRT displays with excellent image quality that use a BUS control system signal processing IC This IC can drive the direct even including a DC component deflection yoke with the sawtooth wave output f...

Page 21: ...pendent speaker controls In 1db steps for balance facility independent mute function All functions programmable via serial Bus 2 monitor output only for tda7442 S e m i c o n d u c t o r s TDA6108 Triple video output amplifiers General Description By integrating three video amplifiers in a single IC the TDA6108 ICs provides a single IC solution for driving color TV CRTs Each device in the TDA6108 ...

Page 22: ...ge amplifier specially designed for TV and Portable Radio applications o Wıde supply voltage range 3 18v o Mınımum external components no swr capacıtor no bootstrap no boucherot cells ınternally fıxed gaın o Stand by mute functıons o Short cırcuıt protectıon o Thermal overload protectıon ...

Page 23: ... 3 3 V 3 23 0 01 20 IREF reference current input 3 77 0 60 VPE OTP Programming Voltage 0 3 27 21 VSC vertical sawtooth capacitor 3 71 0 61 VDDC digital supply to core 3 3 V 3 26 0 22 AGCOUT tuner AGC output 2 08 0 8 62 OSCGND oscillator ground supply 0 03 3 27 23 SIFIN1 SIF input 1 1 83 0 63 XTALIN crystal oscillator input 1 59 1 59 24 SIFIN2 SIF input 2 1 83 0 64 XTALOUT crystal oscillator output...

Page 24: ...s also not in use 1 50 0 08 28 DACM_R Loudspeaker out right 0 3 0 60 ANA_IN2 IF input 2 can be left vacant only if IF input 1 is also not in use 0 52 0 07 29 DACM_L Loudspeaker out left 0 3 0 61 TESTEN Test pin 0 0 30 NC Not connected 0 0 62 XTAL_IN Crystal oscillator 2 36 0 31 DACM_SUB Subwoofer output 0 26 0 63 XTAL_OUT Crystal oscillator 2 33 0 32 NC Not connected 0 0 64 TP Test pin 0 6 0 IC 20...

Page 25: ... 880 mV 15625 kHz Pin 17 200 mV div 10 msn div Vpp 1 V 15625 kHz Pin 30 500 mV div 50 µsn div Vpp 720 mV 15625 kHz Pin 31 2 mV div 25 µsn div Vpp 5 84 V 15625 kHz Pin 38 500 mV div 25 µsn div Vpp 2 28 V 15625 kHz Pin 40 200 mV div 25 µsn div Vpp 952 mV 15625 kHz Pin 45 200 mV div 50 µsn div Vpp 624 mV 15625 kHz Pin 47 500 mV div 25 µsn div Vpp 1 86 V 15625 kHz ...

Page 26: ...v 50 µsn div Vpp 770 mV 15625 kHz Pin 57 500 mV div 25 µsn div Vpp 2 28 V 15625 kHz Pin 58 500 mV div 25 µsn div Vpp 2 2 V 15625 kHz Pin 71 5 V div 25 msn div Vpp 5 6 V 15625 kHz Pin 72 5 V div 25 msn div Vpp 5 V 15625 kHz ...

Page 27: ... 27 10 2 MSB 341OG IC 20 Pin 25 1 V div 1 msn div Vpp 1 84 V 1 kHz Pin 26 1 V div 1 msn div Vpp 1 88 V 1 kHz Pin 33 100 mV div 0 5 msn div Vpp 172 mV 1 kHz Pin 34 100 mV div 0 5 msn div Vpp 168 mV 1 kHz ...

Page 28: ...iting from the Service Mode the version and the date of the software are seen on the screen for few seconds as belows VER SD5965_A01 OF96 T01040818 Navigation P P Moves upward downward inside the menu V V Changes the values or options 11 2 1 AGC Adjustment Switch on the Service Menu Find the AGC with P P Set its value to 33 for 14 and 21 Tv s Find the TEST with P P Set its value to 35 for 14 and 2...

Page 29: ... GRN option with P P buttons and adjust it to 32 V V button Adjust RED and BLUE for white balance If white balance can not be adjusted properly change GRN value Adjust BLOR and BLOG for red and green cut off Exit from the Service menu 11 2 5 Feature Options TUNER Panasonic Philips for Philips or Thomson tuner Sharp Temic Note Thomson tuner can be used only for PAL BG or PAL SECAM BG versions HEAD ...

Page 30: ...FF GRN Green level 32 32 RED Red level 30 30 BLUE Blue level 30 30 BLOG Black level offset green 30 30 BLOR Black level offset red 36 36 YDLY Luminance delay 14 14 SAT Saturation 20 20 HUE Sharpness 32 32 CON Contrast 32 32 CDR Cathode Drive Level 02 02 BRI Brightness 32 32 EWT East West Trapezium 28 28 EWCU EW upper corner 32 32 EWCL EW lower corner 32 32 EWPW EW parabola width 17 17 HSHT Horizon...

Page 31: ... 31 ...

Page 32: ... 32 ...

Page 33: ...C192 CC CHIP 1NF J 50V 0805 NPO 292106 C193 CC CHIP 1NF K 50V 0805 X7R 292110 C193 C PEM 47NF K 63V R 5 273471 C194 CC CHIP 1NF K 50V 0805 X7R 292110 C194 C PEM 47NF K 63V R 5 273471 C195 C196 CC CHIP 1NF J 50V 0805 NPO 292106 C200 EC 4 7UF 50V 11 5 R 5 250479 C201 EC 220UF 16V 11 8 R 5 252229 C202 C204 EC 4 7UF 50V 11 5 R 5 250479 C205 C206 CC CHIP 1NF K 50V 0805 X7R 292110 C207 C210 C CEA 470PF ...

Page 34: ...06 C634 C ELA 47UF 160V 21 13 R 5 251489 C635 C636 EC 100UF 10V 11 5 R 5 252111 C637 EC 470UF 16V 12 5 10 R 5 252482 C638 EC 47UF 16V 11 5 R 5 251478 C639 C PEM 100NF J 100V R 5 274107 C640 EC 220UF 10V 11X6 3 R 5 253234 C641 EC 10UF 50V RS 11 5 TAPING R 5MM 251112 C642 EC 100UF 10V 11 5 R 5 252111 C643 EC 4 7UF 50V 11 5 R 5 250479 C644 CC 470PF K 500V Y5P R 5 201470 C645 EC 1000UF 16V 20 10 R 5 2...

Page 35: ...J 1 10W 0805 171102 R124 RC CHIP 3K J 1 10W 0805 172302 R125 CFR 27K J 1 4W 3 2 52MM 143274 R127 RC CHIP 0R 0805 2 1 25 179001 R129 RC CHIP 0R 0805 2 1 25 179001 R130 R131 RC CHIP 100R J 1 10W 0805 171102 R132 RC CHIP 33K J 1 10W 0805 173333 R133 RC CHIP 390R J 1 10W 0805 171393 R134 RC CIHP 3 3K J 1 10W 0805 172335 R135 RC CHIP 1K J 1 10W 0805 172101 R136 RC CHIP 180R J 1 10W 0805 171182 R137 RC ...

Page 36: ...O 120R J 2W 73MM 111123 R523 COIL 1UH J LAL02 53888 R525 CFR 510R J 1 2W 52MM 141513 R526 CFR 39R J 1 2W 9 52MM 100392 R527 CFR 1K J 1 4W 3 2 52MM 142101 R528 CFR 2 4K J 1 4W 3 2 52MM 102248 R529 CFR 56K J 1 6W 52MM 143564 R530 CFR 56K J 1 2W 9 103564 14 R530 CFR 75K J 1 2W 9 103564 21 R531 CFR 4 7K J 1 2W 52MM 102473 R532 CFR 1 5K J 1 2W 52MM 142155 R533 RMO 27K J 2W 113275 R534 CFR 27K J 1 4W 3 ...

Page 37: ...ST B 5B XH A WHITE 31206 X401 CONN HOUS 3P 2317 3S JST B 3B XH A RED 31646 X401 DVD CABLE 3 LU KIR BEYAZ MINI KON L 400MM ZL5525 AS X402 CONN HOUS 5P 2317 5S JST B 5B XH A WHITE 31206 X402 1 CONN MALE 5 RIGHT A 2317 5R JST S 5B XH 38889 X402 2 CONN HOUS 3 PIN 2317 3R JST S 3B XH A 31329 X402 X402 1 CABLE HARN CFIZ 5 LI TUS T DVD L 600MM ZL5531 AS X403 CONN HOUS 10P 2317 10S JST4B XH A BEYAZ 31299 ...

Page 38: ...EAKER 8R 7W NOM 10W MAX 120X50 7ZY107 AS 21 Pure Flat D5 CRT MODULU 14 DVDTV ZL6165 CRT D5 CRT MODULU 21 DVDTV CRT ZL5165 SMPS ELDOR 14 ST AVSTEREO DVD COMBO 050100 EL1 SMPS ELDOR 21 STEREO DVD COMBO 050101 EL1 FBT 21 1412 7010 A DVD COMBO 058751 EL1 FBT 14 1412 7007 A DVD COMBO 058750 EL1 38 ...

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