Matsui 1410R Service Manual Download Page 3

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Contents

Technical Specifications

Page 2

Mechanical Instructions

Page 3

Overview oscillograms / testpoints

Page 4

Descriptions of microprocessor and TXT in CTN chassis

Page 5

Small signal

Page 7

Power supply

Page 9

Power supply signal

Page 10

Electrical Adjustments

Page 11

Repair Facilities

Page 12

Block Diagram Power Supply

Page 13

List of Abbreviations

Page 14

Electrical Instructions

Page 15

Safety Instructions, Maintenance Instructions, Warnings and notes Page 17

PCB layout

Page 18

Block Diagrams

Page 20

Circuit Descriptions

Page 26

Parts List

Page 33

Summary of Contents for 1410R

Page 1: ...This Manual is available in Electronic format SERVICE MANUAL MATSUI 1410R 1410T 2010R TV Version 1 1 Mastercare Maylands Avenue Hemel Hempstead Hertfordshire HP2 7TG Telephone 01442 888104 ...

Page 3: ...l signal Page 7 Power supply Page 9 Power supply signal Page 10 Electrical Adjustments Page 11 Repair Facilities Page 12 Block Diagram Power Supply Page 13 List of Abbreviations Page 14 Electrical Instructions Page 15 Safety Instructions Maintenance Instructions Warnings and notes Page 17 PCB layout Page 18 Block Diagrams Page 20 Circuit Descriptions Page 26 Parts List Page 33 ...

Page 4: ... OSD green and menu 1 LED red in ON and blinking red in stand by VCR programs 0 to 79 Tuning and operating system VST UV1315AS IEC VST VHFa 48 102 MHz VHFb 138 224 MHz UHF 470 861 MHz U1343AS IEC VST UHF 470 861 MHz Local operating functions Vol Prog contrast colour and brightness 2 Connection facilities Euroconector 1 Audio R 0V5 RMS ó 1K 17 CVBS 2 Audio R 0V2 2V RMS ò 10K 18 CVBS 3 Audio L 0V5 R...

Page 5: ...ities on the copper side of the main carrier Position A can be reached by first removing the mains cord from it s fixation then loosen the carrier lips 1 and then pulling the carrier panel 2 for approximately 10cm Position B can be reached from position A after disconnecting the degaussing cable Put the carrier on the line transformer side Mechanical instructions ...

Page 6: ...3 Overview oscillograms Testpoints ...

Page 7: ...ramic resonator on pins 31 and 32 The SAA52XX has a 12 MHz oscillator which is determined by a 12 MHz crystal between pins 41 and 42 On Screen Display OSD In order to synchronize the OSD information with the picture signal the VERT FLYBACK signal is added in inverted form to the integrated circuit pins 15 and 27 on the TMP47C634 and pin 37 on the SAA52XX as is the HOR FLYBACK signal pin 26 on the ...

Page 8: ...e band and system and the personal preferences Standby pin 19 The Standby switching signal is on pin 19 of the mC If the Standby signal is low it reduces the start up voltage of oscillator pin 36 on the TDA836X thus cutting the line voltages Control and options keypad The decoding principle is different depending on the unit On the TMP47C634 it decodes a matrix between pins 11 12 and 13 while on t...

Page 9: ...The baseband CVBS signal of pin 7 IC7015 6A nominal amplitude of 2Vpp also contains the 5 5 or 6 0 MHz FM sound signal FM intercarrier sound This sound signal is filtered out with a 5 5 MHz 6 0 MHz PAL I ceramic filter 1032 and or 1033 Source select The CVBS signal is now fed to pin 13 IC7015 6B to the source selector switch in IC7015 6B Pin INT EXT 0V gives internal CVBS pin 13 pin 16 INT EXT 8V ...

Page 10: ...eband picture signal For BGDK or BGILL sets the switching signal BG I is used to select the current crystals For I or DK reception BG I is low TS7170 does not conduct D6170 conduct and so crystal 1136 6 0 MHz for I and 6 5 MHz for DK is switched parallel to 1135 For BG reception BG I is high TS7170 conduct D6170 does not conduct and 1136 is not switched in parallel to 1135 5 5 MHz only For PAL BG ...

Page 11: ... the voltage across winding 4 2 reaches approx 15V D6521 starts conducting and takes over the 15 supply voltage at pin 6 IC7514 CONTROL CIRCUITRY 100 feedback for frequency and duty cycle control Sense windings 4 2 has same polarity as winding 5 7 During T off winding 5 7 and so winding 4 2 are positive D6515 conducts and so charges C2515 the DC level across C2515 is a reference for the 100 Via R3...

Page 12: ...9 Power supply signals ...

Page 13: ... sets without SECAM LL reception possibility Connect a signal generator e g PM5326 as indicated above and adjust the frecuency for 38 9 MHz for a PAL I at 39 5 MHz Connect a voltmeter to pin 44 of IC7015 6A Adjust L5043 for 3V5 DC 1 7 RF AGC If the picture of a strong local transmiter is reproduced distorted adjust potenciometer R3021 until the picture is undistorted Or Connect a pattern generator...

Page 14: ...given These blocks indicate the functionaly of that specific part of the circuit Service Default Mode The CTN software contains a Service Default Mode To activate this mode the service pin of the microcomputer pin 7 IC7600 should be short circuited to earth while switching on the set with the mains switch shorting pin 7 can be done on the copper side via the 2 copper squares or on the component si...

Page 15: ...12 Block diagram power supply 100 100 100 10V ...

Page 16: ...sformer MUTE PROG 0 Only for sets whithout SCART AV low for program 0 muting the sound high for program 1 39 NIL Non InterLace NTSC National Television System Committee OSD On Screen Display OSD FAST BLANKING Fast blanking info from OSD generator in µC to video controller IC7015 6D for blanking the RGB info to enable OSD G insertion OSD G Green info from OSD generator in µC to video controller IC7...

Page 17: ...3216 and 3203 respectively 8 Turn the colour purity rings with tab E so that the vertical red line coincides as closely as possible with the centre of the screen and at the same time make sure the centre horizontal line is as cor rectly aligned as possible 9 Connect a picture white signal and make sure the red vertical line is in the centre of the screen If it is not in the centre connect the cros...

Page 18: ...15 ...

Page 19: ...ions maintenance instructions warning and notes Warnings 1 In order to prevent damage to IC s and transistors any flash over of the EHT should be avoided To prevent damage to the picture tube the method indicated in Fig 11 1 has to be applied to discharge the picture tube Make use of an EHT probe and a universal meter is 0V after approx 30s 2 ESD All IC s and many other semi conductors are sensiti...

Page 20: ...PCB LAYOUT ...

Page 21: ...PCB LAYOUT ...

Page 22: ...Bloc Bloc Bloc Bloc Block Dia k Dia k Dia k Dia k Diagram gram gram gram gram ...

Page 23: ...CI DRIVE VERT 43 38 36 37 39 40 SYNC V VARI 4M7 3M7 2M7 1M7 5M7 8C BLANKING I50 SCART AV 8B 8A 8D 4 6 6 3 3 4 IN VIDEO SCART CVBS IF BG L 02PH 1 2 4 5 3 RES IN AUDIO 56P 8A 8A 8A 8B CVBS S C INT EXT L L IF NEG SCART AUDIO IN OUT SCART CVBS IN CONTRAST OUT AUDIO SCART uP INT EXT CHROMA POS 7015 6C CVBS SCART OUT IN CVBS SCART ONLY SCART A V AGC A80 IF CHROMA VIDEO LINE DRIVE IF WITH SCART SCART WIT...

Page 24: ...7 42 1136 1135 9 A B C D E F G H I J K L M 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M 1 2 4 3 5 6 9 8 7 A36 D30 A C A40 A39 A38 A37 D23 D24 D26 D27 D28 D29 VG2 ff ff AQUA L3 3L2 2L2 1L2 4L2 EHT VG2 FOCUS B R G R OFF CUT D WHITE L4 AQUADAG 2L1 3L1 1L1 ff ff FOCUS 25KV 4 5 6 8 1 FOCUS VG2 VG1 3 9 7 B G R 1990 4L1 5L1 P30 DISPLAY 150 WHITE D CUT OFF B CUT OFF G C65 RGB DISPLAY COMPONENTS CRT PANEL E22...

Page 25: ...448 K5 3449 K5 3451 I4 3455 H4 3456 H4 3457 J3 3460 L4 3470 J3 3480 I4 3501 C3 3504 A3 3507 B5 3508 D5 3509 B5 3510 D5 3512 D4 3513 D4 3516 E3 3517 D5 3518 D5 3519 B4 3520 B4 3521 E5 3523 D4 3524 B4 3525 B4 3527 E5 3528 E4 3540 F5 3570 F4 3571 F4 3573 G4 3574 F4 3576 F5 3577 F5 5441 I5 5443 K5 5445 K3 5447 J3 5449 K5 5480 I4 5500 C3 5525 E3 5532 F5 5534 F3 5540 F5 5541 F6 5550 D6 5552 E4 6416 I2 6...

Page 26: ...2 3645 F11 3646 D1 3647 G10 3648 C10 3649 F12 3650 C6 3651 F4 3652 F10 3653 F10 3654 G9 3655 G9 3656 H9 3657 C6 3658 G12 3659 G13 3660 C3 3661 C7 3662 C4 3663 C3 3664 B9 3665 B9 3667 C9 3668 B10 3669 B10 3670 C9 3671 C6 3672 B8 3673 B7 3674 B8 3675 C3 3676 C2 3680 H7 3681 C8 3682 F7 3684 G7 3685 G7 3686 H3 3687 H3 3688 H3 3689 H3 3690 C5 3691 F1 3692 F3 3693 G3 3694 C4 3695 C6 3696 C6 3697 C4 3698...

Page 27: ...ICE 2 I C TV AFC OSD 3632 1K8 3679 5STB 9665 9667 B4 B4534 6663 3675 2K7 5STBC ONLY NO MENU D2 C4 J7 K7 E7 E7 E7 E7 E8 F3 L6 F3 F4 D2 L6 L7 H4 G3 L7 C5 E7 I8 H8 E2 I2 I7 H7 7685 I8 H8 K7 K7 K8 J7 J7 J7 J8 E7 E7 I7 E7 K3 K3 H6 K4 K3 F4 H2 F3 D4 D4 G3 H3 G3 H3 H4 H3 H3 G4 F3 F2 G3 G3 H2 D2 D2 D3 D4 D4 D3 D3 C3 C2 C2 C5 G7 G7 F7 K5 C5 E7 D7 K4 K4 J4 K7 E7 K3 G2 G2 H2 H2 D2 D2 C3 E8 J4 F8 G8 F7 9686 9...

Page 28: ...es if the AGC circuit should control at the top white level of the video positive modulation or at the top sync level negative modulation Saw filter 1015 bandpass characteristic is modified by BG L switching signal proceeding from the microcontroller For BGIDK reception BG L is low D6014 does no conduct and the bandpass filter is tuned by 5012 and 2013 at 32 9MHz to 38 9 MHz For LL reception BG L ...

Page 29: ... blanking can switch signals for full screen by a DC voltage or for a part of the screen by a pulse voltage RGB outputs pins 18 19 20 See RGB amplifier 1 5 Horizontal synchro IC7015 6E Start up pin 36 When the set is switched on voltage at pin 36 rises and when exceeds 7V the horizontal oscillator starts running at approx 25 KHz slow start After the line starts main supply of IC7015 pin 10 comes u...

Page 30: ...3 of the final sound amplifier IC7187 TDA7052 or TDA7056 Multistandard sets FM demodulation This function is done in the same way that no multi sets The only difference consist of a second Pal I 6MHz filter 1135 in addition to the 5 5MHz BG filter 1136 6MHz filter is switched off for BG reception by transistor 7170 depending on BG I signal AM demodulation In Multistandard sets also AM demodulation...

Page 31: ...lt up The voltage across winding 4 2 is rectified by diode D6521 and used to supply the IC on pin 6 Soft start pin 7 The capacitor C2523 causes a slow increase of the duration of the output pulse during start up IC output pin 5 This output drives T7525 R3523 is a fuse resistor to protect IC from short circuits in T7525 D6516 limits the maximum voltage in T7525 Start conduction ofT7525 pin 8 A volt...

Page 32: ... DC voltage across C2505 As soon as the voltage Vpin 3 reaches 6 6V the supply will stop running 4 4 Secondary side Line supply The value to adjust the supply is 101 5V for 14 CPT S 102 5V for 17 CPT S and 107V for 20 21 CPT S This supply is also used to obtain the 33V varicap voltage by D6602 Auxiliary supply 11V This supply is used for sound output amplifier for start up the line circuitry and f...

Page 33: ...diagram A for small signal 5V by T7001 diagram A for the tuner and for the microcontroller 6 MICROCONTROLLER TEXT Diagram E The CTN BB chassis is designed to accept 2 different microcontrollers SAA5531 and SAA5541 Both microcontrollers are mounted in the same position 7600 and the associated circuitry is the same The ROM of the ICs contain an specific program that assures all the functions of the ...

Page 34: ... Automatic Frequency Control of IF detector is added to the tuning voltage V VARI by R3689 and R3688 to compensate for the slow variation of the tuning feature While searching for the station pin 51 is set on high which means that the AFC voltage will not be added to the V VARI If an IDENT signal is received on pin 16 while searching for a station the uP stop searching and checks via input pin 9 i...

Page 35: ...1R 1 3W NFR25H 230620703108 3449 RES 1R 1 3W NFR25H 230620703108 3189 RES 2R 1 3W NFR25H 230620703208 3457 RESNFR25H 27R 1 2W PM5 230620703279 3516 RES MET FILM 100K 232219473104 3202 RES 12K 2W PR02 232219473123 3215 RES 12K 2W PR02 232219473123 3228 RES 12K 2W PR02 232219473123 3507 RES MET FILM 150K 232219473154 3444 RES FLM PRO3 5K6 3W 232219533562 3504 RES VR37 10M 1 2W PM5 232224213108 3501 ...

Page 36: ...0127 7605 TRANS PMBT2369 SMD 933828890215 7187 IC TDA 7052A 935054410112 7400 TDA3653B N2 IC 935084350112 7271 IC TDA 4665 V4 935193240112 7015 IC TDA8361 E N5 935200950112 A FRONT CABINET 20 20 21 B BACK COVER 20 20 I MAIN PANEL 14 14 I MAIN PANEL 20 20 J CRT PANEL 20 20 1 CRT 14 823009009280 1 CRT 20 823020040210 2 DEGAUSING COIL 313010821262 3 LOUDSPEAKER 14 25OHMS 313010060191 5 REMOTE CONTROL...

Page 37: ...NOTES ...

Page 38: ...NOTES ...

Page 39: ...MATSUI 1410R 1410T 2010R ...

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