Sharp 27C540 Service Manual Download Page 16 | Manualshive

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SCHEMATIC DIAGRAM: MAIN-1 Unit

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Summary of Contents for 27C540

Page 1: ...SSEMBLIES 22 PARTS LIST 27 PACKING OF THE SET 35 CONTENTS SPEAKER SIZE 9 x 5 cm oval 2 pcs VOICE COIL IMPEDANCE 16 ohm at 400 Hz ANTENNA INPUT IMPEDANCE VHF UHF 75 ohm Unbalanced TUNING RANGES VHF Channels 2 thru 13 UHF Channels 14 thru 69 CATV Channels 1 thru 125 EIA Channel Plan U S A POWER INPUT 120V AC 60 Hz POWER RATING 115W PICTURE SIZE 2 187 cm2 339sq inch CONVERGENCE Magnetic SWEEP DEFLECT...

Page 2: ...gh voltage with a meter to be certain that the high voltage does not exceed the specified value and that it is regulating correctly 5 Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry 6 When trouble shooting and taking test measurements on a receiver with excessive high voltage avoid being unnecessarily close to the receiv...

Page 3: ...ent covers or shields isolation resistor capacity networks mechanical insulators etc 3 To be sure that no shock hazard exists check for leakage current in the following manner Plug the AC cord directly into a 120 volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a 1 5k ohm 10 watt resistor paralleled by a 0 15µF capacitor in series with all exposed metal...

Page 4: ...ENCE With the Personal Preference buttons you can program your favorite programs by using the 4 categories A B C and D The channels can be accessed quickly by using these buttons VOLUME UP DOWN Increases sound Decreases sound Changes or selects the TV adjustments on On Screen Display MENU Press Accesses MAIN MENU Press again Exits MAIN MENU DVD VCR CONTROL CATV DVD TV VCR MODE SELECT SWITCH InTV V...

Page 5: ...of the horizontal oscillator does not stop in step 5 the circuit must be repaired before the set is returned to the customer HIGH VOLTAGE CHECK High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows 1 Connect an accurate high voltage meter between ground and anode of picture t...

Page 6: ... in the video adjustment menu to ensure customer controls are in their proper reset position 2 Service number selection Once in the service mode press the Ch up or Ch down button on the remote controller or at the set The service adjustment number will vary in increments of one from V01 to M05 Select the item you wish to adjust 3 Data number selection Press the Vol up or Vol down button to adjust ...

Page 7: ...T OFF COMPONENT 64 255 00h FFh 64 40h Component Input V47 G CUT OFF COMPONENT 64 255 00h FFh 64 40h Component Input V48 B CUT OFF COMPONENT 64 255 00h FFh 64 40h Component Input V49 G R DRIVE COMPONENT 0 127 00h 7Fh 64 40h Component Input V50 B DRIVE COMPONENT 0 127 00h 7Fh 64 40h Component Input V51 SHARP COMPONENT 0 63 00h 3Fh 44 2Ch Component Input 2C V52 TINT S 0 127 00h 7Fh 62 3Eh Component I...

Page 8: ...0h 3Fh 28 1Ch M05 SPECTRAL 0 63 00h 3Fh 23 17h D14 EW CORNER BOTTOM 19 81 13h 51h 50 32h Offset toward D13 32 D15 NOISE DET LEVEL 0 3 00h 03h 0 00h 00 D18 V CENTERING 0 63 00 3Fh 36 24h D19 V AGC 0 1 00h 01h 0 00h 00 D20 V POSITION VCOMP 0 7 00h 07h 0 00h 16 9 Format 00 D21 H POSITION VCOMP 0 31 00h 1Fh 15 0Fh 16 9 Format D22 V SIZE VCOMP 0 127 00h 7Fh 52 34h 16 9 Format D23 H SIZE VCOMP 0 63 00h ...

Page 9: ...a good local channel 2 Enter the service mode and select the service adjustment V03 and set to 00 minimum color Record original data code under adjustment V03 before changing V03 does not have to be adjusted if you selected a B W picture or monoscope pattern 3 Alternately adjust the service adjustment data of V09 and V10 until a good grey scale with normal whites is obtained RF Input 4 For compone...

Page 10: ...5mm B AMP Base waveform in step TP47B LEVEL Note Aging for 10 min before adjustment After the adjustment of V center and V size re adjustment for this V line Vertical Phase Adjustment SCREEN FORMAT 4 3 1 Enter the service mode and input data of 00h on D01 2 Adjust D18 data value so that picture is centered SCREEN FORMAT 16 9 3 Input data of 00h on D20 4 Input data of D34 same as D18 data Horizonta...

Page 11: ... 20mVrms Separation Adjustment 1 Input SIGNAL 1 and vary the M04 bus data to get the minimun AC voltage to pin 39 of IC3001 2 Input SIGNAL 2 and vary the M05 bus data to get the minimun AC voltage to pin 39 of IC3001 SIGNAL 1 300Hz 30 modulation Lch only NR ON SIGNAL 2 3kHz 30 modulation Lch only NR ON Note SIGNAL 1 Adj for wideband SIGNAL 2 Adj for spectral Check the output of the speaker at the ...

Page 12: ...12 27C540 CHASSIS LAYOUT ...

Page 13: ...13 27C540 BLOCK DIAGRAM ...

Page 14: ...ONDITIONS 1 Photographs taken on a standard gated color bar signal the tint setting adjusted for proper color The wave shapes at the red green and blue cathodes of the picture tube depend on the tint color level and picture control 2 indicates waveform check points See chart waveforms are measured from point indicated to chassis ground WAVEFORMS å AND SHADED COMPONENTS SAFETY RELATED PARTS ç MARK ...

Page 15: ...15 27C540 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SCHEMATIC DIAGRAM CRT Unit ...

Page 16: ...16 27C540 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SCHEMATIC DIAGRAM MAIN 1 Unit ...

Page 17: ...17 27C540 10 11 12 13 14 15 16 17 18 19 ...

Page 18: ...18 27C540 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SCHEMATIC DIAGRAM MAIN 2 Unit ...

Page 19: ...19 27C540 10 11 12 13 14 15 16 17 18 19 ...

Page 20: ...20 27C540 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 SCHEMATIC DIAGRAM 3 LINE Y C Unit ...

Page 21: ...21 27C540 10 11 12 13 14 15 16 17 18 19 ...

Page 22: ...22 27C540 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 A MAIN Unit A Side ...

Page 23: ...23 27C540 10 11 12 13 14 15 16 17 18 19 ...

Page 24: ...24 27C540 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB A MAIN Unit B side ...

Page 25: ...25 27C540 10 11 12 13 14 15 16 17 18 19 ...

Page 26: ...26 27C540 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB B CRT Unit Wiring side PWB C 3 LINE Y C Unit Wiring side PWB C 3 LINE Y C Unit Chip Parts side ...

Page 27: ...E125N F X SE125N AD IC751 VHiPQ09RDA1 1 X PQ090RDA1SZ AD IC900 VHiCXA2089Q 2Y X CXA2089Q 6T AK IC1403 VHiPQ05RDA1 1 X PQ050RDA1SZ AD IC2001 RH iXA418WJZZQ X TMP88CS38BFG AN IC2040 VHiKiA7045A 1 X KIA7045AP AB IC2101 VHiBR24L16F 1Y X BR24L16F WE2 AC IC3001 VHiCXA2194Q 1Y X CXA2194Q T6 AP TRANSISTORS Q201 VS2SC2735 1EY X 2SC2735 AB Q361 VS2SB709AR 1Y X 2SB709AR AB Q401 VS2SD601AR 1Y X 2SD601AR AB Q4...

Page 28: ...JW108M X 1000 6 3V Electrolytic AB C103 VCEA0A1CW108M X 1000 16V Electrolytic AB C201 VCKYCY1HB102KY X 1000p 50V Ceramic AA C202 VCKYCY1HB103KY X 0 01 50V Ceramic AA C203 VCKYCY1HB102KY X 1000p 50V Ceramic AA C223 VCKYCY1CF104ZY X 0 1 16V Ceramic AA C224 VCEA0A1HW474M X 0 47 50V Electrolytic AB C225 VCKYCY1CF104ZY X 0 1 16V Ceramic AA C227 VCEA0A1HW106M X 10 50V Electrolytic AB C228 VCKYCY1CF104ZY...

Page 29: ...Y X 0 01 50V Ceramic AA C902 VCKYCY1HB103KY X 0 01 50V Ceramic AA C903 VCKYCY1HB681KY X 680p 50V Ceramic AA C904 VCEA0A1HW105M X 1 50V Electrolytic AB C905 VCEA0A1HW105M X 1 50V Electrolytic AB C906 VCKYCY1HB681KY X 680p 50V Ceramic AA C907 VCEA0A1HW105M X 1 50V Electrolytic AB C908 VCKYCY1HB103KY X 0 01 50V Ceramic AA C909 VCEA0A1HW105M X 1 50V Electrolytic AB C910 VCEA0A1HW105M X 1 50V Electroly...

Page 30: ...152JY X 1 5k 1 8W Carbon AA R365 VRS CY1JF152JY X 1 5k 1 16W Metal Oxide AA å R367 VRN RL3DB3R3J X 3 3 2W Metal Film AB R368 VRD RA2BE222JY X 2 2k 1 8W Carbon AA R369 VRD RA2BE822JY X 8 2k 1 8W Carbon AA R371 VRS CY1JF102JY X 1k 1 16W Metal Oxide AA R372 VRS CY1JF223JY X 22k 1 16W Metal Oxide AA R403 VRS CY1JF000JY X 0 1 16W Metal Oxide AA R404 VRS CY1JF683JY X 68k 1 16W Metal Oxide AA R406 VRS CY...

Page 31: ... R914 VRS CY1JF152JY X 1 5k 1 16W Metal Oxide AA R915 VRS CY1JF102JY X 1k 1 16W Metal Oxide AA R916 VRS CY1JF683JY X 68k 1 16W Metal Oxide AA R917 VRS CY1JF332JY X 3 3k 1 16W Metal Oxide AA R918 VRS CY1JF332JY X 3 3k 1 16W Metal Oxide AA R922 VRS CY1JF102JY X 1k 1 16W Metal Oxide AA R923 VRS CY1JF102JY X 1k 1 16W Metal Oxide AA R924 VRS CY1JF750JY X 75 1 16W Metal Oxide AA R925 VRS CY1JF750JY X 75...

Page 32: ...Oxide AA R3019 VRS CY1JF101JY X 100 1 16W Metal Oxide AA R3024 VRD RA2BE102JY X 1k 1 8W Carbon AA SWITCHES S2501 QSW KA003WJZZ X Switch POWER AB S2502 QSW KA003WJZZ X Switch MENU AB S2503 QSW KA003WJZZ X Switch VOL DOWN AB S2504 QSW KA003WJZZ X Switch VOL UP AB S2505 QSW KA003WJZZ X Switch CH DOWN AB S2506 QSW KA003WJZZ X Switch CH UP AB BALUNES FB601 RBLN 0047CEZZY X Balun AB FB706 RBLN 0037CEZZY...

Page 33: ...0Y X Peaking 10µH AB L1410 VP XF100K0000Y X Peaking 10µH AB L1414 VP XF330K0000Y X Peaking 33µH AB L1417 VP XF220K0000Y X Peaking 22µH AB CAPACITORS C1412 VCEA0A1HW106M X 10 50V Electrolytic AB C1413 VCKYCY1HF103ZY X 0 01 50V Ceramic AA C1414 VCCCCY1HH3R0CY X 3p 50V Ceramic AA C1415 VCE9GA1CW106M X 10 16V Electrolytic AB N P C1416 VCEA0A1CW477M X 470 16V Electrolytic AB C1417 VCKYCY1CF104ZY X 0 1 ...

Page 34: ...VRS CY1JF102JY X 1k 1 16W Metal Oxide AA BALUN FB1401 RBLN 0061TAZZY X Balun AB MISCELLANEOUS PARTS P1401 QPLGZ0810CEZZ X Plug 8Pin AB MISCELLANEOUS PARTS SP1 VSP9050PB35WA X Speaker L AE SP2 VSP9050PB35WA X Speaker R AE QCNW B020WJZZ X Connecting Cord AC QCNW B021WJZZ X Connecting Cord AC SUPPLIED ACCESSORIES TGAN A216WJN1 X Guarantee Card AB RRMCGA035WJSB X Infrared R C AR TiNS B122WJZZ X Instru...

Page 35: ...Case MARK Not replacement items FRONT Buffer Material Polyethylene Sheet Polyethylene Bag Operation Manual Infrared R C Unit Batteries REAR Use tape to fix the top side of packing case Use 12 staples to fix the bottom side of packing case ...

Page 36: ...tted 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 TQ1718 S Mar 2004 Printed in Japan MY DS Design and Production Information Design JAPAN Production SEMEX SEMEX ...

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