Sharp 70GS-62S Service Manual
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Sharp 70GS-62S Service Manual

Pal bg system colour television
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ELECTRICAL SPECIFICATION........................3
IMPORTANT SERVICE NOTES........................4
CONTROL & TERMINALS.................................5
ADJUSTMENTS PROCEDURES......................7
STEREO LED FLASHING CODES..................11 PARTS LISTING..............................................38
PRINTED WIRING BOARDS..........................12 PACKING OF THE SET & ACCESSORIES....46
SHARP CORPORATION
SERVICE MANUAL
PAL BG SYSTEM COLOUR TELEVISION
MODEL
70GS-62S
In the interests of user safety (required by safety
regulations in some countries) the set should restored
to its original condition and only parts identical to
those specified should be used.
CONTENTS
CHASSIS LAYOUT...........................................16
COMPONENT LOCATION TABLES................16
ICs ADITIONAL INFORMATION.....................21
SCHEMATIC DIAGRAM..................................31
1
70GS-62S
SESG70GS62S00
Issued: 30th May '01
GA-10
CHASSIS
DE / GG / IT
This document has been published to
be used for after sales service only.

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  • Page 1: Table Of Contents

    70GS-62S SERVICE MANUAL SESG70GS62S00 Issued: 30th May ‘01 GA-10 CHASSIS PAL BG SYSTEM COLOUR TELEVISION MODEL 70GS-62S DE / GG / IT In the interests of user safety (required by safety regulations in some countries) the set should restored to its original condition and only parts identical to those specified should be used.
  • Page 2 70GS-62S SERVICE MANUAL UPDATE LOG SHEET Technical Report No. Application Cause / Solution Part No. Page No. Data /Serial No. Technical Bulletin No. Use this page to keep any special servicing information as Technical Report (Bulletin), Technical Information, etc. If only part number changes are required, just change part number directly the part number in the Parts Listing Section.

  • Page 3: Electrical Specification

    70GS-62S ELECTRICAL SPECIFICATIONS •Focus ....... High Bi-Potential Electrostatic •Power Input ....220V-240 Volts AC 50Hz •Sweep Deflection ........Magnetic •Power Consumption •Picture Intermediate frequency....38.9MHz Normal Operation ........87W Stand-by Operation ........1W •Sound Carrier Trap........33.4MHz •Adjacent Sound Carrier Trap ....40.4MHz •Audio Power Output Rating (MPO) / Impedance...

  • Page 4: Important Service Notes

    70GS-62S IMPORTANT SERVICING NOTES Only qualified service personnel are allowed to carry out maintenance and repair of this receiver. SERVICING OF HIGH VOLTAGE SYSTEM AND CRT It is important that the static charge is removed from the high voltage system when carrying out work on the receiver.
  • Page 5 70GS-62S REMOTE CONTROL 1. Stand-by ON/OFF switch (TV) Video 2. Power ON / OFF switch (VCR) 3. Digit buttons 0 ∼ 9 4. Flashback button TV/VIDEO Teletext 5. Colour button (green) 6. Colour button (red) 7. Volume Down/Cursor control Left 8.

  • Page 6: Control & Terminals

    70GS-62S CONTROLS & TERMINALS FRONT TV 1. Main Power On/Off Switch 2. Power Indicator / I / II 3. Program Selector (UP/DOWN) 4. Volume Buttons (UP/DOWN) 5. Remote Control Sensor 6. Sound Indicator 7. Remote Control Indicator 8. DOOR Behind the door 9.

  • Page 7: Adjustments Procedures

    70GS-62S ADJUSTMENT PROCEDURES All adjustments to this chassis, except for focus, are carried out in the service mode. • • • • • SERVICE MODE The service mode is provided to enable the engineer to correctly set up the receiver to the CRT fitted in the set.
  • Page 8 70GS-62S The following geometry adjustments can be carried out. Detailed instructions on how to execute these are given on the following pages Horizontal Vertical • Horizontal Shift • Vertical Amplitude • E-W Width • S Correction • Pin Phase • Vertical Shift •...
  • Page 9 70GS-62S Corner Symmetry Adjust the Corner Symmetry so that the picture is centred. The effect of this adjustment is shown in figure 7. Note: This adjustment affects to upper and lower sides. • When the volume up button is pressed, side pincushion changes from pincushion to barrel shape.
  • Page 10 70GS-62S • When the volume down button is pressed the top and bottom scanning decreases and the centre scanning increases. • Press the stand-by button on the remote control to store. Vertical Shift Adjust the Vertical Shift so that the picture is centred.

  • Page 11: Stereo Led Flashing Codes

    DO NOT change any NVM data, unless you have been ad- 1. Unable to read or write into NVM: 66% ON, 33% OFF vised to do so by a Sharp representative. If data is incor- twice and OFF for a second.
  • Page 12 70GS-62S F7315N4. MOTHER UNIT PWB. Component side. S702 S703 S704 S705 OPC1 M1000 LP701 VAR1 C701 L701 D701 C737 D702 JF702 C726 C703 D704 C727 C706 C905 C704 C712 C904 T702 R906 J326 POR701 JF64 C798 D749 C901 C732 R738...
  • Page 13 70GS-62S F7315N4. MOTHER UNIT PWB. Component side. QKITP7315BMN4 Q708 D1001 D1002 L302 (VS) L303 JF702 C389 IC304 C388 (AV) C915 C902 R337 (SP) C905 R904 C386 R359 C392 C372 C377 C3309 C362 C361 C376 L316 C353 C358 C351 C378 R355...
  • Page 14 70GS-62S F7315N4. MOTHER UNIT PWB. Copper side. K D724 R758 C380 Q708 J401 C391 Q706 JF52 L317 R338 R755 JF39 JF53 C405 D100 R339 R333 R332 C387 JF702 L302 R335 R331 L303 JF14 IC304 JF17 C915 C1043 R337 C1044 R330...
  • Page 15 70GS-62S F7315N4. MOTHER UNIT PWB. Copper side. M1000 R1045 R1044 JF21 R1032 IC1008 R1043 R765 R774 S702 S703 S705 S704 R1046 LP701 JF60 C1050 C1022 R1033 D701 C1019 D1001 C737 D702 C726 R770 C703 D704 C704 R712 C913 R708 R706...

  • Page 16: Chassis Layout

    70GS-62S F7315N4. CHASSIS LAYOUT. PTC UNIT (F7347N0) PWB & COMPONENT LOCATION TABLES. Component Side. Component Side. Copper Side. 5HI 1R <XP '*   &   '   F7347BMN0 C1701 -/   Q1701 JL23 -/  ...
  • Page 17 70GS-62S MOTHER UNIT (F7315N4) PWB COMPONENT LOCATION TABLES. Component Side. 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP $9   &   &   ,&  ...
  • Page 18 70GS-62S MOTHER UNIT (F7315N4) PWB COMPONENT LOCATION TABLES. Component Side Copper Side 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP   /   5   73&   &...
  • Page 19 70GS-62S MOTHER UNIT (F7315N4) PWB COMPONENT LOCATION TABLES. Copper Side. 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP &   '   '   -  ...
  • Page 20 70GS-62S MOTHER UNIT (F7315N4) PWB COMPONENT LOCATION TABLES. Copper Side. 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5   4   5   5   5  ...

  • Page 21: Ics Aditional Information

    70GS-62S ICs ADITIONAL INFORMATION: TDA9885 (IC201) QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT supply voltage note 1 4.75 5.00 5.50 supply current −1 dB video at output − µV VIF input signal voltage sensitivity i(VIF)(rms) (RMS value) −...
  • Page 22 70GS-62S ICs ADITIONAL INFORMATION: TDA9885 (IC201) SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT −3 dB audio frequency bandwidth for − without de-emphasis; AF(−3dB) dependent on loop filter at pin 4 − weighted signal-to-noise ratio of 27 kHz FM deviation; W(audio) 50 µs de-emphasis;...
  • Page 23 70GS-62S ICs ADITIONAL INFORMATION: TDA9885 (IC201) BLOCK DIAGRAM...
  • Page 24 70GS-62S ICs ADITIONAL INFORMATION: TDA9885 (IC201) PINNING SYMBOL DESCRIPTION SYMBOL DESCRIPTION VIF1 VIF differential input 1 TAGC tuner AGC output VIF2 VIF differential input 2 4 MHz crystal or reference input output 1 (open-collector) VAGC VIF-AGC for capacitor; note 1 FMPLL FM-PLL for loop filter...
  • Page 25 70GS-62S ICs ADITIONAL INFORMATION: TDA7480 (IC301, IC302, IC501) ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit ±20 DC Supply Voltage Storage and Junction Temperature –40 to 150 °C Maximum Voltage Across VFREQ (Pin 9) FREQ Operating Temperature Range -20 to 70 °C...
  • Page 26 70GS-62S ICs ADITIONAL INFORMATION: TDA7480 (IC301, IC302, IC501) = ±14V; R ELECTRICAL CHARACTERISTICS (Refer to the test circuit, V = 8Ω; R = 50Ω; = 12KΩ; Demod.. filter L = 60µH, C = 470nF; f = 1KHz; T = 25°C unless otherwise specified.)
  • Page 27 70GS-62S ICs ADITIONAL INFORMATION: MSP3401G (IC303) Loud- Loud- Sound IF1 Pre- speaker speaker processing modulator Sound Sound IF2 Subwoofer Processing Headphone Headphone Sound Processing Prescale SCART1 SCART2 SCART SCART1 SCART3 Input Prescale SCART Select Output SCART4 Select MONO SCART2 Block Diagram of the MSP 34x1G...
  • Page 28 70GS-62S ICs ADITIONAL INFORMATION: MSP3401G (IC303) Absolute Maximum Ratings Symbol Parameter Pin Name Min. Max. Unit − °C Ambient Operating Temperature − −40 °C Storage Temperature −0.3 First Supply Voltage AHVSUP SUP1 −0.3 Second Supply Voltage DVSUP SUP2 −0.3 Third Supply Voltage...
  • Page 29 70GS-62S ICs ADITIONAL INFORMATION: VCT3832 (IC1001) VCT 38xx Display RGBOUT Processor Video Panorama Video Comb Color Front-end Scaler Back-end Filter Decoder RGBIN Pict.Improv. VOUT VSUPAB GNDAB AOUT MSync Audio Color, Prio VSync C Master 8-bit PWM 24 kB ROM 14-bit PWM...
  • Page 30 70GS-62S ICs ADITIONAL INFORMATION: VCT3832 (IC1001) VSUPP3 GNDD GNDP3 VSUPD HOUT CLK20 TEST FBLIN VPROT SAFETY VBCLK HFLB 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73...
  • Page 31 70GS-62S DESCRIPTION OF SCHEMATIC DIAGRAM NOTE: SAFETY NOTE: 1. The unit of resistance «ohm»is omitted (K=1000 ohms. M= Megaohm). 1. DISCONNECT THE AC PLUG FROM THE AC 2. All resistors are 1/8 watt. unless otherwise noted. OUTLET BEFORE REPLACING PARTS.
  • Page 32 70GS-62S Red output Green output Blue output I Sense V St-by E/W Output V Switch V Control St-by Vp (Primary) Vertical Input E/W Correction V inner correction Vertical + input H Control...
  • Page 33 70GS-62S Vb (Horizontal) Vc (Horizontal) V in Headphone L V in Headphone R V in Speaker L V out Speaker L V out Speaker R V in Speker R X1002 V Flyback Vertical Vertical output Vertical input IF Video output...
  • Page 34 70GS-62S SCHEMATIC DIAGRAM OF MOTHER UNIT (K7315N4). Page 36 PROT MUTE PROT HOUT VPROT ALCLOCK...

  • Page 35: Schematic Diagram

    70GS-62S SCHEMATIC DIAGRAM OF MOTHER UNIT (K7315N4). Page 37 VPROT...
  • Page 36 70GS-62S SCHEMATIC DIAGRAM OF MOTHER UNIT (K7315N4). PROT HEADR HEADL MUTE FRONT SC4INL SC4INR STBY HEADR HEADL VOUT PROT...
  • Page 37 70GS-62S SCHEMATIC DIAGRAM OF MOTHER UNIT (K7315N4) . SC2OUTL SC2OUTR SC1IN SC2IN VPROT SC1INR SC1OUTR SC1OUTL SC1INL VOUT ALCLOCK...
  • Page 38 70GS-62S PARTS LISTING 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 4  966$.4 757 %& 60' 6 $$ REPLACEMENT PARTS 4  5+7;%0== 757 . 726+,%$ 6 $$ Replacement parts which have special safety characteristics are identi- 4  &+7;%09 757 6(7 5+7; 35()250...
  • Page 39 70GS-62S 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( '  5+(;%0== =(1(5 ',2'( 7=0&9 7). 60' 6 $$ '  5+';%0== ',2'( 1 $&3$ 6 $% '  5+(;%0== =(1(5 ',2'( 7=0&9 7). 60' 6 $$ '  5+(;%0==...
  • Page 40 70GS-62S 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( &  9&&&79++- &(5$0 & 3) 9 60' 6 $$ &  5&)=%01- 32/ ),/0 & Q) 9  (&49 3$1$621,& 6 $$ &  9&($*$+:0 (/(&...
  • Page 41 70GS-62S 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( &  9&($*$&:0 (/(& & 8)  9 6 $$ &  9&&&79++- &(5$0 & 3) 9 60' 6 $$ &  5&(=%0== (/(& & 8) 9 6 $' &...
  • Page 42 70GS-62S 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5  95679-'-  .2+0  : 60' 6 $$ 5  95674%'- 2; 5(  2+0  : 60' 6 $$ 5  95679-'-  .2+0  : 60'...
  • Page 43 70GS-62S 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5  95679-')  .2+0  : 60' 6 $$ 5  95679-'-   2+0  : 60' 6 $$ 5  95679-'-  .2+0  : 60'...
  • Page 44 70GS-62S 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( -  95674%'-   2+0  : 60' 6 $$ -  95679-'-   2+0  : 60' 6 $$ -  95674%'-...
  • Page 45 70GS-62S 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R3$576 '(6&5,37,21 61 &2'( (; &2'( '  5+';%0== ',2'( %<70 7). 6 $$ $& 5(6,67256 '  5+';%0== ',2'( %<** 7). 60' 6 $$ $& 5  55;=%0== )86 5(6 5 7$3  : 6 $$ '  5+';%0==...
  • Page 46 70GS-62S 1.6 1.4 PACKING OF THE SET Pack-ad SPAKX4053BMZZ Wrapper SPAKP2006BMZZ FRONT SPAKC5448BMN2 Carton Box...
  • Page 47 70GS-62S Batteries Remote Control UBATU0247AJZZ RRMCG1071BMSA Operation Manual Set Q601, Q602 REPLACEMENT NOTES: When Q601 or Q602 requires to be replaced, please consider the following steps in order to avoid damaging any part. 1. Gently unclamp clip from side to side using a screwdriver to remove, as shown on Fig.1 2.
  • Page 48 SHARP ELECTRONICA ESPAÑA S.A. PRINTED BY: TV Division Think Ecology, please use Engineering Dept.

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