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Color Television

Model

：

20S62(TDVCF2016)

12/54

5. Net dimension

The Net dimension(MM) is 570*480*510.

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Содержание TDVCF2016

Страница 1: ...4 F6B COLOUR TELEVISION SERVICE MANUAL Features 51CM pure flat picture tube CCD function 181 program presetting and memory Parental control Inner DVD Inner VCR AV stereo and MTS Models TDVCF2016 TV 8888 69 ...

Страница 2: ...tion and Series Introduction 2 2 Features 3 3 Specifications 4 4 Safety Precautions 5 5 Warning and Cautions 6 6 Net dimension 12 7 Parts and Functions 13 8 Remote Controller Functions 14 9 Maintenance Service 16 10 Circuit Diagram 22 11 Circuit Explanation 23 12 Adjustment 28 ...

Страница 3: ...Color Television Model 20S62 TDVCF2016 2 54 1 Product Code illumination and Series Introduction 20 S 62 CRT size unit inch VCR DVD TV combine Model series of aspect number ...

Страница 4: ...ng 12 Left right balancer 35 Background light 13 NICAM 36 Auto timer on 14 Multi audio modes 37 CCD 15 Tone adjuster 38 SOFTWA RE V CHIP 16 MTS SAP 39 NO of built in speakers 2 17 AUDIO Auto volume leveling 40 Audio output power W 2 1 5W 18 AV input back 1 front 1 41 Total power input W 100W 19 AV output 42 Voltage range V 120V 20 DVD terminal 43 Power frequency Hz 60HZ 21 S video jack 44 Time of ...

Страница 5: ... FS tuner l IF 45 75MHz l Power consumption 100W l Antenna input impedance 75Ω l Receiving system a Color system NTSC b Broadcast TV system M l Language displayed English French Spanish l Video input 1 0VP P 75Ω l Audio input 436m Vrms 40KΩ l VCR system NTSC HiFi SP EP l DVD district mode 1 Specifications ...

Страница 6: ...m being damaged by accidental shorts of the circuitry that might be inadvertently introduced during the service operation If any fuse or Fusible Resistor in this TV receiver is blown replace it with a specified one When replacing a high wattage resistor Oxide Metal Film Resistor over 1W keep the resistor 10mm away from PCB Keep wires away from high voltage or high temperature parts Due to the high...

Страница 7: ...ar heat source 6 When the TV set isn t going to be used for long time or it is in thunder and lightening please pull out the plug from AC outlet and the antenna plug from the cover of the TVset Explanation on the display tube Generally it is not needed to clean the tube surface However if necessary its surface can be cleaned with a dry cotton cloth after cutting off the power Don t use any cleanse...

Страница 8: ... other end of the insulated clip lead to the picture tube anode button using an insulating handle to avoid personal contact with high voltage 4 Do not spray chemicals on or near this receiver or any of its assemblies 5 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or compara...

Страница 9: ... Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before r...

Страница 10: ...r splashed solder with a small wire bristle brush Remove Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the circuit foil When holes are of slotted type the following technique should be used to remove and replace the IC When working with boards using the familiar round hole use the standard technique as outlined ...

Страница 11: ...oard Securely crimp each connection and solder it Inspect on the circuit board copper side the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch...

Страница 12: ...ollowing technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on the component side of the circuit board 1 Remove the defective copper pattern with a sharp knife Remove at least 1 4 inch of copper to insure that a hazardous condition will not exist if the jumper wire opens 2 Trace along the copper pattern from ...

Страница 13: ...Color Television Model 20S62 TDVCF2016 12 54 5 Net dimension The Net dimension MM is 570 480 510 ...

Страница 14: ...Color Television Model 20S62 TDVCF2016 13 54 7 Parts and Functions 1 Front panel of the TV set 2 Rear panel of the TV set ...

Страница 15: ...Color Television Model 20S62 TDVCF2016 14 54 8 Remote Controller Functions ...

Страница 16: ... KEC I805 9V IC KIA78R09 I804 5V IC L7805CV Q401 audion for H deflection 2SD2499 Toshiba I301 Vertical deflection IC LA78040 Sanyo I803 2 5V IC KA431AZTA I802 phototransistor PC817B Sharp I501 CVBS decoding and TV IC LA76834NM Sanyo I201 VCR decoding IC LA71207M Sanyo IH01 HiFi and MTS IC LA72670BM Sanyo I701 CPU IC M37762XXX CASTI IS01 switching MM1492 MITSUMI I601 sound process IC TDA7449 ST I50...

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Страница 25: ... 0 145 soft start time set up and overload protection 6 FB 1 310 Feedback terminal 7 OCP BD 1 048 over current protection and bottom detection terminal 2 Vertical deflection IC LA78040 or LA78041 Pin definition Voltage V remark 1 input 2 27 Vertical signal from LA76834 2 VCC 25 3 pump up 2 18 4 GND 0 5 output 13 7 6 out VCC 25 3 7 reference 2 28 Reference voltage 3 Phototransistor PC817B Pin defin...

Страница 26: ...M37760 16 RGB VCC 8 17 SW 9V 17 Red output 3 536 To CRT board 18 Green output 3 47 To CRT board 19 Blue output 3 642 To CRT board 20 V Size Comp input 3 88 21 F GND 0 22 F GND 0 23 F GND 0 24 F GND 0 25 E W output 1 166 26 Vertical output 2 395 27 V Ramp ALC Filter 2 67 28 Horizontal BUS VCC 5 22 Come from SW 9V 29 Horizontal AFC Filter 2 684 30 Horizontal output 0 62 31 H GND 0 32 CPU Reset VCC i...

Страница 27: ... filter and black stretch 56 Video output 2 48 Output signal to P43 of MM1492 57 NC 0 Connect to GND 58 FLL Filter 3 76 VCO filter 59 VCO Coil 2 4 13 60 VCO Coil 1 4 13 61 F GND 0 62 F GND 0 63 F GND 0 64 F GND 0 65 APC Filter 2 32 PIF APC filter 66 Ext Audio input 2 15 Not used 67 SIF output 1 92 68 SIF APC Filter 2 38 69 SIF input 3 08 Not used 70 NC 0 Connect to GND 71 NC 0 Connect to GND 72 NC...

Страница 28: ...Not used 10 MUXOUT L 4 53 11 MUXOUT R 4 53 12 BIN R 0 13 BOUT R 0 14 BOUT L 0 15 BIN L 0 16 TREBLE L 0 17 TREBLE R 0 18 DIG_GND 0 19 SCL 4 45 The second bus 20 SDA 4 28 The second bus 6 sound amplifier IC LA4635A Pin definition Voltage V remark 1 DC Ripple Filter 6 9 2 IN1 L 1 58 3 GND 0 4 IN2 R 1 58 5 STBY 1 01 6 P P Popping Noise Eliminator 9 8 7 VCC 13 75 8 OUT2 R 6 75 9 NC 0 10 PWR GND 0 11 NC...

Страница 29: ...1 13 phase EQ Q CTL 0 8 14 PB ENVE 1 9 To adjustment board 15 FM AGC filter 1 4 16 Y GND 0 17 5V 4 18 main emphasis filter 2 4 19 S DET 0 20 emphs asis filter 2 5 21 main de emphasis out 1 8 22 clamp in 3 1 23 Y Vcc 4 8 SW 5V 24 QV SYNC 0 Come from P13 of M37760 25 NC 0 3 26 Cvin 1 9 Send CVBS signal of VCR to P13 of MM1492 and to P56 of M37760 27 AGC TC2 1 5 28 NC 2 2 Not used 29 AGC TC1 BALANCER...

Страница 30: ... 57 C_ROT rotary 0 Connect to P15 of M37760 58 HA SW 0 Connect to P16 of M37760 59 ENVE DET 0 8 Connect to P10 of M37760 60 ENVE COM 4 8 Connect to P17 of M37760 61 killer filter 1 9 62 head amp GND 0 63 CHROMA DET 2 7 64 ACC DET 1 6 65 SP_L 0 7 66 SP_COM 0 7 67 SP_R 0 7 68 HA_VCC 4 88 SW 5V 69 REC CURRENT AJUST OUTPUT 4 87 70 REC CURRENT ADJUST INPUT 0 05 71 HA_GND 0 72 EP_L 1 8 73 EP_COM 1 8 74 ...

Страница 31: ...V 4 86 Rear AV VIDEO input 17 STV L 0 Rear AV AUDIO L input 18 STV R 4 33 Rear AV AUDIO R input 19 Yin2 4 9 Not used 20 ADR 0 GND 21 Cin2 4 84 Not used 22 GND 0 GND 23 Vout2 5 21 CVBS output to VCR 24 Rout2 4 2 AUDIO R output to VCR 25 Cout2 3 4 Not used 26 Lout2 4 17 AUDIO L output to VCR 27 Yout2 3 4 Not used 28 GND 0 29 SDA 3 34 The first bus 30 SCL 3 62 The first bus 31 MUTE 0 Not used 32 Cin1...

Страница 32: ... 0 1 19 NR waiting filter terminal1 L 2 5 20 NR waiting filter terminal1 R 2 5 21 CCA reference terminal L 2 5 22 NR emphasis terminal L 2 5 23 HI FI H 0 02 Send signal to P8 of M37760 24 A R normal sound signal from VCR 2 1 Receive signal from P201 25 PRE GND 0 26 A COM normal sound signal from VCR 2 1 Receive signal from P201 27 A L normal sound signal from VCR 2 1 Receive signal from P201 28 CO...

Страница 33: ...anceller filter 3 8 56 FM filter 2 1 57 SIF2 2 2 58 VREF 4 5 59 filter auto adj 2 4 60 pilot det filter 3 8 61 PC_DC_MO 3 2 62 PCDCOUT 3 8 63 PCDCIN 3 8 64 PCDBXIN 2 5 65 MAIN V I CONVERT 3 8 66 SPECTRAL DET 4 1 67 SPE DET V I CONVERT 3 9 68 WIDE BAND DET 3 9 69 Video SW 0 1 Connect to P18 of M37760 70 GND 0 71 NC 0 1 Not used 72 WID DEP V I CONVERT 3 8 Dbx dec 73 NC 0 1 Not used 74 NC 2 5 Not use...

Страница 34: ...o P59 of LA71207 11 NC 0 Not used 12 NC 0 Not used 13 QV SYNC 0 14 REMDCON IN 4 83 15 C ROTARY 0 016 16 HA SW 0 016 17 ENVE COMP 4 84 18 VIDEO SW 0 016 19 A H SW 0 016 20 REC H 0 21 NC 0 22 PWR OFF H 0 016 23 CAP F R 0 24 NC 0 015 25 NC 0 015 26 A MUTE H 0 015 Connect to P58 of LA71207 27 CAP I LIM 1 506 28 T R REC LED 0 015 29 ST BY LED 0 015 30 CRT_ON H 4 75 31 PWR ON H 4 78 32 RLY ON H 0 014 33...

Страница 35: ...SD BOX 0 015 61 OSD BLANKING 0 62 OSD B 0 63 OSD G 0 015 64 OSD R 0 016 65 S OUT DVD 4 74 66 S IN DVD 5 20 67 S CLK DVD 0 68 SDA_2 4 25 The second bus 69 SPK MUTE H 0 016 70 SCL_2 4 41 The second bus 71 V CLK 3 58 The first bus 72 V DATA 3 321 The first bus 73 VCR CS 0 381 Connect to P55 of LA71207 74 LM CTL 0 Connect to P204 of VCR 75 NC 0 015 76 DRUM PWM 0 015 Connect to P204 of VCR 77 CAPS PWM ...

Страница 36: ...OUT 2 429 92 AMP REF IN 2 425 93 C 0 94 CTL 0 95 CTL 2 386 96 AMP C 2 399 97 CTL AMP 0 98 AMP VCC 5 08 CPU 5V 99 A VCC 5 08 CPU 5V 100 KEY0 4 84 TV keys 11 TDA9183P comb filter circuit Pin definition voltage remark 1 NC 0 87 2 GND 0 3 NC 1 56 4 GND 0 5 VDDD 4 85 6 VCCA 4 86 7 H SYNC 3 70 8 GND 0 9 Fsc 0 65 10 NC 0 11 NC 0 12 CVBS input 1 8 13 GND 0 14 Y output 1 67 15 GND 0 16 C output 1 48 3754 ...

Страница 37: ...to GND The current will increase or fall linearly Then there will be voltage at secondary side P10 of T801 is the voltage of B It is used for horizontal scan and 33V for tuner The photocoupler samples from B voltage and the STR W6735 will adjust its working according to the feedback of the sampling P12 of T801 is the voltage of 11V This voltage is used for SW 9V At the same time it provides photoc...

Страница 38: ...me time saveral DC voltages appear at FBT 1 High voltage is about 27KV used for CRT 2 VIDEO voltage is about 180V used to amplify RGB signal on the CRT board 3 24V voltage is used for vertical scan cuicuit 4 HEATER is AC voltage for heater of CRT 5 ABL signal is connected to main board through line of P808 after sampling resistor R414 1Kohm LA76834 will adjust the output RGB range according to the...

Страница 39: ... RS 0603 1 16W 47kΩ J E Yes No H SYNC R551 resistor RT13 1 6W 1KΩ J T52 Yes No R552 resistor chip RS 0603 1 16W 2 7KΩ J E Yes No C553 capacitor chip 0603CG104J500NT Yes No J017 jumper φ0 58mm 7 5mm Yes No fsc R553 resistor chip RS 0603 1 16W 10kΩ J E Yes No C554 capacitor chip 0603F103M500NT Yes resistor chip RS 0603 1 16W 0Ω J E No add one jumper between P12 and P14 of I502 C555 electrolytic capa...

Страница 40: ...stereo or sap LA72670 will send out different voltage at P40 P40 of LA72670 is connected to P5 of M37762 Then M37762 will know it is mono or stereo or sap signal Different types of sound signal will be processed differently So M37762 must know the information LA72670 outputs the L R signal at P78 80 and the signal is received at P14 15 VCR in of MM1492 Because M37762 knows it is at the TV mode and...

Страница 41: ...ds out the signal at P24 P26 to P7 P69 of LA72670 Through inner curcuit LA72670 will transfer the mono sound signal to LA71207 at P4 LA71207 receives the signal at P10 LA71207 will output audio signal which are proper for VCR to record at P11 At the same time M37762 outputs high voltage at P20 which are REC H Then audio signal is transferred through Q209 Q208 T201 VCR can get the audio signal at P...

Страница 42: ... VCR and the signal is send to P6 of LA71207 After inner decoding sound signal is output at P10 and LA72670 receives it at P4 Now P23 of LA72670 will be low voltage and send the informaiton to the P8 of MM37762 After inner transferring LA72670 will output the signal at P78 P80 MM1492 receives the signal at P14 15 f VCR is on play back mode HiFi sound signal VCR reads the signal through DRUM and th...

Страница 43: ...ry Screen Center adjust 7 P T Picture Test Bright Contrast Sharpness Tint Color adjust 8 WB White Balance White balance adjust 9 DP Digital Preset sub bright control 10 FACT Factory Reset Set default data 11 PG PG Adjust PG Delay auto adjust 12 PATH PATH Adjust Deck path adjust center max min Adjust methodes TV Connect AC power cord of set Push buttons on remote controll in sequence as follows in ...

Страница 44: ...in x 260 y 270 Y 120 b Low beam Select R BIAS G BIAS and B BIAS Adjust that value to obtain x 260 y 270 Y 15 c Repeat a and b till no difference between low and high beam data Using MENU button exit WB mode 6 DP Receive mono scope pattern Select DP mode Adjust Sub bright data to obtain proper raster Using MENU button exit DP mode 7 AGC Receive color bar pattern that RF level is 60dBu Connet Jig at...

Страница 45: ...mper Put SN 2 tape into the VCR and the VCR will play automaticly Let VR1 500K on the JIG in the middle 1 adjust entrance P2 and exit P3 P2 is signed 4 GUIDE ROLLER in the upper chart P2 is signed 8 GUIDE ROLLER in the upper chart Adjust the P2 and P3 until the signal on CH2 of the oscillograph becomes horizontal Turn the VR1 500K clockwise If the signal on CH2 is not horizontal adjust P2 and P3 a...

Страница 46: ... line and connect the RCA line to the rear video out terminal 1H 63 3us The signal on CH2 should be as follows Press REC during the SN 2 is being played The CPU of TV will adjust the time automaticly The time showed on the oscillograph should between 6H 379 8US and 7H 443 1US If not press REC again If the time is not proper there will be a horizontal line at the bottom of screen during the VCR is ...

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