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Sharp 70FW-53E Service Manual

Pal b/g i / secam l lí b/g d/k system colour television
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PAL
B/G I
SHARP
ELECTRICAL SPECIFICATIONS.....................3
IMPORTANT SERVICING NOTES...................4
ADJUSTMENT PROCEDURES........................5
PRINTED WIRING BOARDS..........................10
COMPONENT LOCATION TABLES................17

SHARP CORPORATION

SERVICE MANUAL

/ SECAM
L L' B/G D/K
MODEL
70FW-53E
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
SCHEMATIC DIAGRAMS................................24
BLOCK DIAGRAM...........................................34
PARTS LISTING..............................................35
STEREO LED FLASHING CODES.................45
PACKING OF THE SET...................................46
1
DA-50W
SYSTEM COLOUR TELEVISION
This document has been published to
be used for after sales service only.
70FW-53E
SE0070FW53E00
Issued: 01 August 2002
CHASSIS
E/ENL/ECG/I/SE

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  • Page 1: Table Of Contents

    70FW-53E SERVICE MANUAL SE0070FW53E00 Issued: 01 August 2002 DA-50W CHASSIS / SECAM SYSTEM COLOUR TELEVISION B/G I L L’ B/G D/K MODEL 70FW-53E E/ENL/ECG/I/SE SHARP 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 70FW-53E 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 Specifications

    PFC Circuit (Power Filter Correction), on every TV set manufac- tured from January 2001. On TV set manufactured before the above date (Serial Number 800929 for 70FW-53E or previous), this modification is not required.

  • Page 4: Important Servicing Notes

    70FW-53E 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: Adjustment Procedures

    70FW-53E 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 6 70FW-53E Note that the receiver should be set to FULL MODE before carrying out any geometry adjustments. This can be achieved by pressing the wide-screen mode button on the remote control until FULL MODE appears on the OSD. This can only be done out of the Service Mode.
  • Page 7 70FW-53E • When the volume down button is pressed, side pincushion changes from barrel shape to pincushion. • Press the stand-by button on the remote control to store. LOWER CORNER CORRECTION Adjust the LOWER CORNER CORRECTION so that the picture is centred.
  • Page 8 70FW-53E Colour Adjustments The following adjustments should only be carried out when the CRT or IC1801 are replaced. G2, Cut Off and Gain Adjustments 1. Follow the procedure below to set the G2 1.1 Tune the set to the output of a signal generator (cross hatch pattern).
  • Page 9 5. If another NVM value has to be changed, use the channel down button to select the page or position and repeat as necessary. Note: DO NOT change any NVM data, unless you have been advised to do so by a Sharp representative. If data is incorrectly changed, serious damage may occur to the receiver. Contrast Adjustments Three types of contrast levels can be varied as listed below: •...

  • Page 10: Printed Wiring Boards

    70FW-53E MOTHER UNIT PWB (F7240NKA). Component side. K7240BM R778 IC1008 LP701 R703 D1001 D1002 (SW2) S702 S704 S703 S705 C701 FB1002 R791 R721 J344 C707 R790 C706 (OPC) (ST) L701 R792 Q711 R1036 CF701 IC704 F702 IC701 C724 JF53 JF54...
  • Page 11 70FW-53E MOTHER UNIT PWB (F7240NKA). Component side. ITP7240BMNK L317 C353 L352 J401 C361 C363 (SS) C356 C352 L318 IC301 (FV). C351 C368 C373 L350 C431 C430 (CC) L351 C341 F702 F7240BMNK C372 L315 C377 L316 (L3) IC302 IC2401 R359 C365 (H).
  • Page 12 70FW-53E MOTHER UNIT PWB(F7240NKA). Copper side. QKITP7240BMNK L317 R353 IC301 C337 L352 C359 C338 C381 J401 C336 (SS) C387 R310 K D426 C356 R352 C354 J345 R317 R351 C350 R311 C364 Q305 C352 C320 C351 L318 R362 R312 L353 C375...
  • Page 13 70FW-53E MOTHER UNIT PWB (F7240NKA). Copper side. J313 M1000 LP701 R778 D1002 R789 R703 D724 C733 C732 C731 C730 R751 R738 S701 C1015 R791 J344 R788 R790 R721 IC702 R787 C707 Q708 R735 JF47 R792 Q712 R754 R1036 CF701 Q1003...
  • Page 14 70FW-53E DYNAMIC FOCUS UNIT PWB (F7314N3). SYMBOL " " WITH INDICATED SECTION ACTIVE CAUTION C1701 R1707 D1701 D1702 R1709 C1703 CAUTION THE ACTIVE SECTION IS INDICATED WITH THE " " SYMBOL IC1701 FB1701 C1704 R1710 R1710 R1712 C1704 D1703 D1703...
  • Page 15 70FW-53E FRONT A/V UNIT PWB CRT MODULE UNIT PWB (F7273N3). (F7267N0). K7273BM F7273BMN3 (RT) (MO) L1604 Comp. Side C1807 ESPA¥A J327 IC1801 (L2) R1821 L317 Q912 R1832 (L3) R1820 C1814 C1825 D1809 D5405 JL20. C1811 R5428 R1841 Q5407 R5420 C5408...
  • Page 16 70FW-53E POWER SWITCH UNIT PWB (F7266N1). Component Side CAUTION D6751 D6752 THE ACTIVE SECTION IS INDICATED WITH OPC1 THE " " SYMBOL LP6701 IC6701 R6701 S6702 S6703 C6701 R6702 L6701 F7266BMN1 F6701 K7266BM T3.15AH (AA) C6746 Copper Side IC6701 R6738...

  • Page 17: Component Location Tables

    70FW-53E MOTHER UNIT (F7240NKA) PWB COMPONENT LOCATION TABLES. Component Side. 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP...
  • Page 18 70FW-53E MOTHER UNIT (F7240NKA) PWB COMPONENT LOCATION TABLES. Component Side. 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP...
  • Page 19 70FW-53E MOTHER UNIT (F7240NKA) PWB COMPONENT LOCATION TABLES. Copper Side. Component Side. 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP...
  • Page 20 70FW-53E MOTHER UNIT (F7240NKA) PWB COMPONENT LOCATION TABLES. Copper Side. 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP...
  • Page 21 70FW-53E MOTHER UNIT (F7240NKA) PWB COMPONENT LOCATION TABLES. Copper Side. 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP 5HI 1R ;XP <XP...
  • Page 22 70FW-53E CRT UNIT (F7273N3) PWB COMPONENT LOCATION TABLES. Component Side Copper side 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP...
  • Page 23 70FW-53E DYNAMIC FOCUS UNIT POWER SWITCH UNIT FRONT A/V UNIT (F7267N0) (F7314N3) PWB COMPONENT (F7266N1) PWB COMPONENT PWB COMPONENT LOCATION LOCATION TABLES: LOCATION TABLES: TABLES: Component side: Copper side: Comp. side: Copper side: Comp. side: Copper side: Ref No Ref No Xum...

  • Page 24: Schematic Diagrams

    70FW-53E 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 25 70FW-53E SCHEMATIC DIAGRAM OF CRT SOCKET UNIT (F7273N3), 00 Version.
  • Page 26 70FW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (F7240NKA), 00 Version. Page 28...
  • Page 27 70FW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (F7240NKA), 00 Version. Page 29...
  • Page 28 70FW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (F7240NKA), 00 Version. Page...
  • Page 29 70FW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (F7240NKA), 00 Version. Page...
  • Page 30 70FW-53E SCHEMATIC DIAGRAM OF DYNAMIC FOCUS UNIT (F7314N3), 00 Version.
  • Page 31 70FW-53E SCHEMATIC DIAGRAM OF POWER SWITCH UNIT (F7266N1), 00 Version.
  • Page 32 J 4 0 1 0 0 1 5 B C N 4 J A K J 0 0 4 7 C E Z Z C 4 2 8 1 n F C 4 2 9 1 5 4 3 2 6 7 1 n F C 3 3 6 C 3 3 7...
  • Page 33 D 1 3 0 3 ( V S ) 6 V 8 E X 0 4 1 1 I C 1 3 0 0 V H I B A 4 5 5 8 R 1 3 0 4 ( 0 ) G N 0 3 4 1 D 1 3 0 4 6 V 8...

  • Page 34: Block Diagram

    70FW-53E BLOCK DIAGRAM. ON/ST-BY...

  • Page 35: Parts Listing

    70FW-53E PARTS LISTING 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( REPLACEMENT PARTS Replacement parts which have special safety characteristics are identified in this manual. Electrical components having such features are identified in the Replacement Part List. The use of a substitute replacement part which does not have the same safety characteristics as the factory recommended is not permitted.
  • Page 36 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( &(5$0,& ),/7(56 75$16)250(56 &$3$&,7256 3$&.$*(' &,5&8,76 &2,/6...
  • Page 37 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'(...
  • Page 38 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5(6,67256...
  • Page 39 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'(...
  • Page 40 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 0,6&(//$1(286 3$576...
  • Page 41 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 3:%% )5217$/ 32:(5 81,7 ',2'(6 &$3$&,7256 &2,/6 5(6,67256 0,6&(//$1(286 3$576 3:%& )5217$/ 6,*1$/ 81,7 &2,/6 5(6,67256 &$3$&,7256 0,6&(//$1(286 3$576...
  • Page 42 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 3:%' &57 81,7 ,17(*5$7(' &,5&8,76 5(6,67256 75$16,67256 ',2'(6 &2,/6 &$3$&,7256...
  • Page 43 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( 0,6&(//$1(286 3$576 3:%) '<1$0,& )2&86 81,7 ,17(*5$7(' &,5&8,76 0,6&(//$1(286 3$576 75$16,67256 ',2'(6 75$16)250(56 &$3$&,7256 3:%( &(175$/ 63($.(5 $03/,),(5 81,7 ,17(*5$7(' &,5&8,76 5(6,67256 75$16,67256 &2,/6...
  • Page 44 70FW-53E 5() 1R 3$576 '(6&5,37,21 61 &2'( (; &2'( SHARP 1.5 1.8 1.3 1.2 2:1(56 0$18$/ &$%,1(7 3$576 ):((&* &$%,1(7 3$576...

  • Page 45: Stereo Led Flashing Codes

    70FW-53E STEREO LED FLASHING CODES If the TV set does not work and the stereo led is flashing, follow the sequence according to the information below, as a guide to fault finding. 1. Unable to read or write into NVM: 66% ON, 33% OFF twice and OFF for a second.

  • Page 46: Packing Of The Set

    70FW-53E PACKING OF THE SET Pack-ad SPAKX4050BMZZ Wrapper SPAKP2006BMZZ Front Carton Box SPAKC5497BMZZ Remote Control RRMCG1070BMSA Batteries UBATU0013TAZZ...
  • Page 47 70FW-53E Notes...
  • Page 48 SHARP ELECTRONICA ESPAÑA S.A. PRINTED BY: TV Division Engineering Dept. Polígono Industrial Can Sant Joan Sant Cugat del Vallès...

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