Table of Contents
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PAL
B/G, I
ELECTRICAL SPECIFICATIONS......................3
IMPORTANT SERVICING NOTES....................4
ADJUSTMENTS PROCEDURES......................5
LED FLASHING CODES..................................10
PRINTED WIRING BOARDS............................11
COMPONENT LOCATION TABLES.................18
SHARP CORPORATION
SERVICE MANUAL
/ SECAM
L/L', B/G, D/K
MODEL
28HW-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............................................32
PARTS LISTING...............................................33
1
DA-50W
SYSTEM COLOUR TELEVISION
This document has been published to
be used for after sales service only.
28HW-53E
SEJB28HW53E00
Issued: 17th Dec 2001
CHASSIS
ES/F/IT/SE
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Summary of Contents for Sharp 28HW-53E
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Page 1: Table Of Contents
28HW-53E SERVICE MANUAL SEJB28HW53E00 Issued: 17th Dec 2001 DA-50W CHASSIS / SECAM SYSTEM COLOUR TELEVISION B/G, I L/L’, B/G, D/K MODEL 28HW-53E ES/F/IT/SE 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 28HW-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.
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Page 3: Electrical Specifications
28HW-53E ELECTRICAL SPECIFICATIONS •Power Input ...... 220V-240 Volts AC 50Hz •Picture Intermediate frequency L’..........33.9MHz L, B/G, D/K,I........38.9MHz •Power Consumption •Sound Carrier Trap Normal Operation ........88W L’..........40.4MHz Stand-by Operation ......1.3W L, D/K...........32.4MHz B/G..........33.4MHz I............32.9MHz •Audio Power Output Rating (MPO) / Impedance •Adjacent Sound Carrier Trap... -
Page 4: Important Servicing Notes
28HW-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
28HW-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 28HW-53E Note that the receiver should be set to FULL MODE before carrying out any geometry adjustments. This can be achieved by pressing the widescreen 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 28HW-53E barrel shape. • When the volume down button is pressed, side pincushion changes from pincushion to barrel shape. • Press the stand-by button on the remote control to store. Corner Symmetry Adjust the Corner Symmetry so that the picture is centred.
- Page 8 28HW-53E • When the volume down button is pressed, the vertical size of the picture decreases. • Press the stand-by button on the remote control to store. S Correction Adjust the S Correction so that the picture symmetrical between the top, centre and bottom.
- 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: •...
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Page 10: Led Flashing Codes
28HW-53E DVCO Adjustment (PAL) LED FLASHING CODES Carry out the DVCO Adjustment (PAL) as shown below: This model is not provided with stereo led, so to let “flashing 1. Receive a Phillips pattern signal. codes” for IC failures detection when the TV set does not 2. -
Page 11: Printed Wiring Boards
28HW-53E FRONTAL POWER SWITCH / AV UNIT (F7342N1A) PWB. Copper Side Component Side R6702 R6701 R6449 L6318 C6337 R6317 R6316 L6317... - Page 12 28HW-53E MOTHER UNIT (F7240N7A) PRINTED WIRING BOARD. Component side. K7240BM R778 IC1008 LP701 R703 D1001 D1002 (SW2) S702 S704 S703 S705 C701 FB1002 R791 R721 Q718 J344 C707 R790 C706 (OPC) (ST) L701 R792 R1036 CF701 Q711 IC704 F702 IC701...
- Page 13 28HW-53E MOTHER UNIT (F7240N7A) PRINTED WIRING BOARD. Component side. KITP7240BMN7 L317 C353 L352 J401 C361 C363 (SS) C356 C352 L318 IC301 (FV). C351 C368 C373 L350 C431 C430 (CC) L351 C341 F702 F7240BMN7 C372 L315 C377 1801 (L3) L316 IC302...
- Page 14 28HW-53E MOTHER UNIT (F7240N7A) PRINTED WIRING BOARD. Copper side. QKITP7240BMN7 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...
- Page 15 28HW-53E MOTHER UNIT (F7240N7A) PRINTED WIRING BOARD. Copper side. J313 D724 M1000 LP701 R778 D1002 Q710 R789 R703 C733 C732 C731 C730 R738 S701 R1038 R791 J344 R788 R790 R721 Q718 IC702 R787 C707 Q708 R735 JF47 R792 R758 R1036...
- Page 16 28HW-53E DYNAMIC FOCUS & PFC UNIT (F7314N3) PWB C1701 CAUTION THE ACTIVE SECTION IS INDICATED WITH THE " " SYMBOL R1710 C1704 D1703 R1603 Q1601 R1601 R1601 D1601 D1601 D1602 FOCO FOCO DYN.INPUT DYN.INPUT ESPA¥A Å...
- Page 17 28HW-53E CRT MODULE UNIT (F7273N3) PWB. K7273BM F7273BMN3 (RT) (MO) L1604 C1807 ESPA¥A J327 IC1801 (L2) R1821 Q912 R1832 (L3) R1820 C1814 C1825 D1809 D5405 JL20. C1811 R5428 R1841 Q5407 R5420 C5408 R1623 Q5408 D5404 C5417 R5426 C5412 (PU) C5414...
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Page 18: Component Location Tables
28HW-53E MOTHER UNIT (F7240N7A) PWB COMPONENT LOCATION TABLES. Component Side. 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP & & ' -... - Page 19 28HW-53E MOTHER UNIT (F7240N7A) PWB COMPONENT LOCATION TABLES. Component Side. 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP - -) -) / ...
- Page 20 28HW-53E MOTHER UNIT (F7240N7A) 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 21 28HW-53E MOTHER UNIT (F7240N7A) PWB COMPONENT LOCATION TABLES. Copper Side. 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP - -) 4 5 ...
- Page 22 28HW-53E MOTHER UNIT (F7240N7A) PWB POWER / AV UNIT (F7342N1A) COMPONENT LOCATION TABLES. PWB COMPONENT LOCATION TABLES Copper Side. 5HI 1R <XP 5HI 1R <XP Component side: 5 5 5 5 5HIB1R <XP...
- Page 23 28HW-53E DINAMIC FOCUS & PFC UNIT CRT UNIT (F7273N3) PWB COMPONENT LOCATION (F7314N3) PWB COMPONENT TABLES: LOCATION TABLES: Component Side. Copper Side. 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5HI 1R <XP 5 &...
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Page 24: Schematic Diagrams
28HW-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 SMD, 1/16 watt. unless OUTLET BEFORE REPLACING PARTS. otherwise noted. - Page 25 28HW-53E SCHEMATIC DIAGRAM OF CRT SOCKET UNIT (F7273N3, 00 Version)
- Page 26 28HW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (K7240N7, 00 Version) Page 28...
- Page 27 28HW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (K7240N7, 00 Version) Page 29...
- Page 28 28HW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (K7240N7, 00 Version)
- Page 29 28HW-53E SCHEMATIC DIAGRAM OF MOTHER UNIT (K7240N7, 00 Version)
- Page 30 28HW-53E SCHEMATIC DIAGRAM OF PFC UNIT (F7314N3, 00 Version)
- Page 31 28HW-53E SCHEMATIC DIAGRAM OF POWER SWITCH UNIT (F7342N1, 00 Version)
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Page 32: Block Diagram
28HW-53E BLOCK DIAGRAM. -
Page 33: Parts Listing
28HW-53E PARTS LISTING REF No. PARTS DESCRIPTION * SN CODE EX CODE Q 0405 VS2SA1037KQ-1 TRT BC807 SMD REPLACEMENT PARTS Q 0406 VS2SA1037KQ-1 TRT BC807 SMD Replacement parts which have special safety characteristics are identified Q 0408 VS2SC2412KQ-1 TRT 2SC2412 ROHM in this manual. - Page 34 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE D 0510 RH-DX0505BMZZ DIODE 1N4935 L 0318 VP-DF3R3K0000 PEAK COIL 3,3UH 10% D 0515 RH-EX0544BMZZ ZENER DIODE TZMC4V7 TFK SMD L 0350 VP-CF3R3K0000 PEAK COIL 3.3UH 10%...
- Page 35 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE C 0321 VCKYTV1HF104Z CERAM C 100NF 50V 2125SMD C 0431 RC-FZ4334BMNJ POL FILM C 330nF 50V 5% ECQ-V PANASONIC C 0322...
- Page 36 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE C 0720 RC-EZ0258CEZZ ELEC C 100MF 200V C 2407 VCKYTV1EF224Z CERAM C 220NF 25V 2125SMD C 0721 RC-EZ0132BMZZ C UVX1V471MPA1CA NICHICON...
- Page 37 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE R 0356 VRS-TV1JD103J 2125 10KOHM 5% 1/10W SMD R 0504 VRS-TV1JD393J 2125 39KOHM 5% 1/10W SMD R 0357 VRS-TV1JD151J 2125 150 OHM 5% 1/10W SMD...
- Page 38 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE R 0644 VRS-TV1JD221J 2125 220 OHM 5% 1/10W SMD R 0812 VRS-TV1JD222J 2125 2,2KOHM 5% 1/10W SMD R 0646 VRS-TV1JD824J 2125 820KOHM 5% 1/10W SMD...
- Page 39 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE CN 0001 QSOCZ2109BMZZ TWIN SCART HR-DG1311G-0 L 0006 QTIPM0017CEFM CN 0002 QSOCZ2107BMZZ SOCKET SW 0001 QPLGN0341CEZZ PLUG SW 0002 QPLGN0341CEZZ PLUG...
- Page 40 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE R 1803 VRS-TV1JD750J 2125 75 OHM 5% 1/10W SMD IC 1701 RH-IX1801BMZZ IC L6561D ST R 1804 VRS-TV1JD101J 2125 100 OHM 5% 1/10W SMD...
- Page 41 28HW-53E REF No. PARTS DESCRIPTION * SN CODE EX CODE (HD) QCNW-2849BMZZ WIRE 3 WAYS HD (HD) QPLGN0341CEZZ PLUG (RC) QCNW-2839BMZZ WIRE 3 WAYS PROTECTED (RC) QPLGN0341CEZZ PLUG (SS) QCNW-2792BMZZ WIRE 3 WAYS (SS) (SS) QPLGN0341CEZZ PLUG (SW1) QCNW-2839BMZZ WIRE 3 WAYS PROTECTED...
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Page 42: Packing Of The Set & Accessories
28HW-53E PACKING OF THE SET Pack-ad SPAKX4077BMZZ Wrapper SPAKP2006BMZZ FRONT SPAKC5495BMZZ Carton Box Remote Control Batteries RRMCG1070BMSA UBATU0247AJZZ Operation Manual Set FRONT Carton Box... -
Page 43: Controls &Terminals
28HW-53E CONTROLS & TERMINALS FRONT TV 1. Main Power On/Off Switch 2. Power Indicator 3. Remote Control Sensor 4. Volume Button (DOWN) 5. Volume Button (UP) 6. Program Selector (DOWN) 7. Program Selector (UP) 3 4 5 6 7 8. Door... - Page 44 SHARP ELECTRONICA ESPAÑA S.A. PRINTED BY: TV Division Think Ecology, please use Engineering Dept.