Sharp SX76NF8 Page 16 Service Manual Download | Manualshive

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SX76NF8

BLOCK DIAGRAM

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Summary of Contents for SX76NF8

Page 1: ...MATIC DIAGRAM 18 SCHEMATIC DIAGRAM Ë CRT UNIT 19 Ë MAIN UNIT 20 Ë CONTROL UNIT 26 Ë DF UNIT 28 Ë LED UNIT 29 Ë KEY UNIT 29 Ë SUB WOOFER UNIT 30 Page PRINTED WIRING BOARD ASSEMBLIES 31 REPLACEMENT PARTS LIST Ë ELECTRICAL PARTS MAIN UNIT 38 CRT UNIT 43 CONTROL UNIT 44 DF UNIT 45 LED UNIT 45 SUB WOOFER UNIT 45 KEY UNIT 45 Ë MISCELLANEOUS PARTS 46 Ë SUPPLIED ACCESSORIES 46 Ë PACKING PARTS 46 Ë CABINET...

Page 2: ...ction 2 Replace with tube of the same type number for continued safety 3 Do not lift picture tube by the neck 4 Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely X RAY This receiver is designed so that any X Ray radiation is kept to an absolute Minimum Since certain malfunctions or servicing may produce potentially hazardous radiation ...

Page 3: ...Cut Off Corner Amplitude Alter NVM Pag Page Corner Symmetry Alter NVM Pos Position Vertical Linearity Alter NVM Val Value Vertical Angle Teletext Mix Mode Contrast Vertical Bow Teletext Contrast Vertical Amplitude OSD Contrast S Correction DVCO Adjustment Only PAL Vertical Shift DVCO Adjustment Only NTSC Red Gain AGC Adjustment Green Gain Rotation Inspection INTIAL On Off Note that the receiver sh...

Page 4: ...BUS CONTROL CORNER SYMMETRY I2C BUS CONTROL VERTICAL ANGLE I2C BUS CONTROL VERTICAL BOW I2C BUS CONTROL S CORRECTION I2C BUS CONTROL 2 50Hz CINEMA 3 60Hz FULL 4 60Hz CINEMA ADJUSTMENT CONDITION PROCEDURE 1 Press R C to set Picture NORMAL condition 2 Select full mode Receive 50Hz Monoscope Pattern Signal 1 Call the VERTICAL LINEARITY mode 2 Increase or decrease VERTICAL LINEARITY by Volume key till...

Page 5: ...NCTION OPERATION CHECKING 1 VIDEO AUDIO NO 1 2 3 4 5 6 7 8 9 ADJUSTMENT POINT CONTRAST COLOUR BRIGHTNESS SHARPNESS TINT ECO MODE COMB FILTER NTSC HUE NORMAL ADJUSTMENT CONDITION PROCEDURE 1 Receive Monoscope Pattern signal 2 Set P Mode to select CONTRAST 3 Press Volume Up Down key to check whether the CONTRAST effect is OK or not 1 Receive Color Bar signal 2 Set P Mode to select COLOUR 3 Press Vol...

Page 6: ...18 19 ADJUSTMENT POINT VOLUME Headphone BALANCE Headphone BASS Headphone TREBLE Headphone ADJUSTMENT CONDITION PROCEDURE 1 Connect Headphone 2 Set S Mode to select VOLUME in headphone mode 3 Press Volume Up Down key to check whether the VOLUME effect is OK or not 1 Connect Headphone 2 Set S Mode to select BALANCE in headphone mode 3 Press Volume Up Down key to check whether the Left to Right BALAN...

Page 7: ...y positioned fix DY Note Preliminary adjustments are made to set L and R to the standard value after convergence adjustment Standard value 25 µm 5 µm at the 90 mm point WAVEFORM OR OTHERS Purity adjustment Aging for more than 2 minutes Aging for more than 30 minutes Raster output PURITY AND CONVERGENCE ADJUSTMENT Continued NO 2 ADJUSTMENT POINT Peripheral landing correction ADJUSTMENT CONDITION PR...

Page 8: ...k pin 51 of IC 1001 Does noise or signal appear Check IC1001 RGB output Normal Check pin 1 2 and 3 of IC850 Signal or Noise Check R616 Heater Screen connection and Peripheral circuits of T602 FBT and CRT Check TU201 tuner SF202 and Peripheral parts Check IC201 Q201 and their Peripheral circuits Check IC1001 and their Peripheral circuits Check CJ connection IC850 and their Peripheral circuits Snow ...

Page 9: ...9 SX76NF8 TROUBLE SHOOTING TABLE NO SOUND Check sound setting by R C Siganl should be received Check C1302 C1309 Voltage Approx 15 15V Check IC1301 IC1302 and Speaker 0V Check L1302 L1303 D752 and D753 ...

Page 10: ...54 and IC751 Check Vertical Circuit Check Q1012 D1016 and SP wire SS connection 0V Check R718 F2001 and AA connection 0V Green Green Green Red Red Red No Light Immediately appear approx 8V and turn to 0V soon Check D752 D753 C756 C757 and IC752 LED FLASHING CODES If the TV set does not work and the power LED is flashing Red Green follow the sequence according to the information below as a guide to...

Page 11: ... TABLE NO VERTICAL SCAN Check the Voltage at pin 15 1 of IC502 Normal approx 14V Check IC502 and related circuits Check D601 D605 R608 and R614 Check IC1001 and peripheral parts Check vertical trigger pulse at pin 12 13 of IC502 ...

Page 12: ...SX76NF8 12 WAVE FORMS 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 13: ...13 SX76NF8 13 14 15 16 17 18 19 20 21 22 23 24 ...

Page 14: ...14 SX76NF8 CHASSIS LAYOUT ...

Page 15: ...15 SX76NF8 ...

Page 16: ...16 SX76NF8 BLOCK DIAGRAM ...

Page 17: ...17 SX76NF8 ...

Page 18: ...TED WITH AC MAINS VOLTAGE WHEN SERVICING THE AREA CONNECT AN ISOLATING TRANS FORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE HAZARD OF ELECTRIC SHOCK NOTES 1 The unit of resistance ohm is omitted K 1000 ohms M Meg ohm 2 All resistors are 1 16 watt unless otherwise noted 3 All capacitors are µF unless therwise noted P µµF VOLTAGE MEASUREMENT CONDITIONS 1 Voltage in parenthesis measured with no ...

Page 19: ...19 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 CRT UNIT SCHEMATIC DIAGRAM ...

Page 20: ...20 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 MAIN UNIT 1 3 ...

Page 21: ...21 SX76NF8 10 11 12 13 14 15 16 17 18 19 ...

Page 22: ...22 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 MAIN UNIT 2 3 ...

Page 23: ...23 SX76NF8 10 11 12 13 14 15 16 17 18 19 ...

Page 24: ...24 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 MAIN UNIT 3 3 ...

Page 25: ...25 SX76NF8 10 11 12 13 14 15 16 17 18 19 ...

Page 26: ...26 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 CONTROL UNIT ...

Page 27: ...27 SX76NF8 10 11 12 13 14 15 16 17 18 19 ...

Page 28: ...28 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 DF UNIT ...

Page 29: ...29 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 LED UNIT KEY UNIT ...

Page 30: ...30 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SUB WOOFER UNIT ...

Page 31: ...31 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PRINTED WIRING BOARD ASSEMBLIES PWB B CRT UNIT PWB D DF UNIT ...

Page 32: ...32 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB A MAIN UNIT COPPER SIDE ...

Page 33: ...33 SX76NF8 10 11 12 13 14 15 16 17 18 19 ...

Page 34: ...34 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB A MAIN UNIT Chip Parts Side ...

Page 35: ...35 SX76NF8 10 11 12 13 14 15 16 17 18 19 ...

Page 36: ...36 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB C CONTROL UNIT ...

Page 37: ...37 SX76NF8 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB E LED UNIT PWB G KEY UNIT PWB F SUB WOOFER UNIT ...

Page 38: ... Q206 VS2SC2412KQ 1Y R 2SC2412KQ AA Q301 VS2SC2412KQ 1Y R 2SC2412KQ AA Q302 VS2SA1037KQ 1Y R 2SA1037KQ AA Q305 VSDTC314TK 1Y R DTC314TK AC Q306 VSDTC314TK 1Y R DTC314TK AC Q601 VS2SC2482 1 R 2SC2482 AD Q602 VS2SC5450 1E R 2SC5450 AL Q603 VS2SD1830 1E R 2SD1830 AF Q604 VS2SA1246 1E R 2SA1246 AE Q651 VS2SC3228Y 1 R 2SC3228Y AD Q652 VS2SA1275Y 1 R 2SA1275Y AD Q701 VS2SC2412KQ 1Y R 2SC2412KQ AA Q702 V...

Page 39: ...V AB D1305 VHDHSU119 1Y R HSU119 AB D1306 VHDHSU119 1Y R HSU119 AB PACKAGED CIRCUITS PR701 RMPTP0102CEZZ R Packaged Circuit AG X201 RCRSAA029WJZZ R Crystal 4MHz AF X301 RCRSB0249GEZZ R Crystal 18 432MHz AF X1001 RCRSAA030WJZZ R Crystal 20 25MHz AH COILS AND TRANSFORMERS L201 VP DF6R8K0000Y R Peaking 6 8µH AB L202 VP DF120K0000Y R Peaking 12µH AB L203 VP DF100K0000Y R Peaking 10µH AB L204 VP DF3R3K...

Page 40: ...609 VCFPVC3ZA123H R 0 012 1 8kVM Polypro AD C611 VCQPPC2JB333J R 0 033 630V Mylar AC C613 RC KZ0036CEZZ R 330p 2kV Ceramic AB C615 VCKYPA2HB102K R 1000p 500V Ceramic AA C616 VCEA0A2EW106M R 10 250V Electrolytic AD C617 RC FZ0377CEZZ R 4 7 100V Mylar AF C618 VCKYPA2HB102K R 1000p 500V Ceramic AA C619 VCEA0A1HW106M R 10 50V Electrolytic AB C620 VCEA0A1EW108M R 1000 25V Electrolytic AD C621 VCEA0A1VW...

Page 41: ...RA2BE101JY R 100 1 8W Carbon AA R212 VRS CY1JF221JY R 220 1 16W Metal Oxide AA R213 VRS CY1JF221JY R 220 1 16W Metal Oxide AA R215 VRS CY1JF331JY R 330 1 16W Metal Oxide AA R216 VRD RM2HD330JY R 33 1 2W Carbon AA R217 VRS CY1JF223JY R 22k 1 16W Metal Oxide AA R218 VRS CY1JF223JY R 22k 1 16W Metal Oxide AA R238 VRS CY1JF392JY R 3 9k 1 16W Metal Oxide AA R239 VRS CY1JF331JY R 330 1 16W Metal Oxide A...

Page 42: ...103JY R 10k 1 16W Metal Oxide AA R759 VRS CY1JF102JY R 1k 1 16W Metal Oxide AA R760 VRS CY1JF473JY R 47k 1 16W Metal Oxide AA R761 VRS CY1JF122JY R 1 2k 1 16W Metal Oxide AA R762 VRD RA2EE680JY R 68 1 4W Carbon AA R763 VRD RM2HD102JY R 1k 1 2W Carbon AA R764 VRS CY1JF822JY R 8 2k 1 16W Metal Oxide AA R765 VRS CY1JF152JY R 1k 1 16W Metal Oxide AA R766 VRS CY1JF102JY R 1k 1 16W Metal Oxide AA R767 V...

Page 43: ... BLN 0036CE AB FB751 RBLN 0036CEZZY R Balun BLN 0036CE AB FB1001 RBLN 0037CEZZY R Balun BLN 0037CE AB FB1006 RBLN 0037CEZZY R Balun BLN 0037CE AB FB1007 RBLN 0020CEZZ R Balun BLN 0020CE AB MISCELLANEOUS PARTS J401 QTANJ1201SEZZ R AV COMPONENT Terminal AN P502 QPLGN0661CEZZ R Plug 6pin DF AD P601 QPLGN0160FJZZ R Plug 5pin K AD P602 QPLGN0761CEZZ R Plug 7pin N AD P651 QPLGN0361CEZZ R Plug 3pin AB P7...

Page 44: ... Sink for Q1507 AD DUNTKB559WEV0 PWB C CONTROL UNIT INTEGRATED CIRCUIT å IC2001 RH FX0008GEZZ R PC123FY8 AE TRANSISTORS Q2001 VS2SC3198 Y 1 R 2SC3198 Y AA Q2002 VS2SC3198 Y 1 R 2SC3198 Y AA Q2003 VS2SC3198 Y 1 R 2SC3198 Y AA Q2004 VS2SC3198 Y 1 R 2SC3198 Y AA Q2005 VS2SA1266 Y 1 R 2SA1266 Y AA Q2006 VS2SC3198 Y 1 R 2SC3198 Y AA DIODES D2008 VHD1SS119 1EY R Diode AA D2009 RH DX0279CEZZY R Diode AB ...

Page 45: ...00WEV0 PWB F SUB WOOFER UNIT INTEGRATED CIRCUIT IC3001 VHiTDA7480 1 R I C AM TRANSISTORS Q3003 VS2SC3198 Y 1 R 2SC3198 Y AA Q3004 VS2SC3198 Y 1 R 2SC3198 Y AA Q3005 VS2SA1266 Y 1 R 2SA1266 Y AA DIODES D3003 VHD1SS119 1EY R 1SS119 AA D3004 VHD1SS119 1EY R 1SS119 AA COILS L3001 VP CF3R3K0000Y R Peaking 3 3µH AC L3002 VP CF3R3K0000Y R Peaking 3 3µH AC L3003 RCiLP0195CEZZ R Coil AB CAPACITORS C3002 VC...

Page 46: ...ITEM SPAKCA326WJZZ Packing Case SPAKPA048WJZZ Wrapping Paper SPAKXA154WJZZ Buffer Material TLABN0001PEZZ No Card TLABK0002PEZZ Serial No Label TLABVA090WJZZ BarCode Label SSAKA0005PEZZ Polyethylene Bag CABINET PARTS LOCATION CABINET PARTS 1 CCABAA163WEV0 R Front Cabinet Ass y BU 1 1 Not Available Front Cabinet 1 2 GWAKPA005WJSA R Front mask BD 1 3 CBTN A075WEV0 R Control Button AF 1 4 JBTN A030WJS...

Page 47: ...T Polystyrene Bag Operation Manual Batteries Infrared Remote Control Unit Buffer Material Packing Case Fix the packing case with 22 staples Number Card Polyethylene Mat Mark Not Replacement Item Buffer Material Serial Number Card ...

Page 48: ... retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP CORPORATION AV Systems Group Quality Reliability Control Center Yaita Tochigi 329 2193 Japan TQ1469 S Jan 2003 Printed in Japan In Japan gedruckt MY DS Design and Production Information Design Japan Production SERC ...

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