Sharp 27SF56B Servisní příručka stáhnout pdf

This document has been published to be used for after

sales service only.

The contents are subject to change without notice.

In the interests of user-safety (Required by safety regulations in some countries ) the set should be restored to its

original condition and only parts identical to those specified should be used.

COLOR TELEVISION

Chassis No. GB-3D

Page

» ELECTRICAL SPECIFICATIONS .........................................................................................................1

» IMPORTANT SERVICE SAFETY PRECAUTION .................................................................................2

» LOCATION OF USER'S CONTROL .....................................................................................................5

» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................6

» SERVICE ADJUSTMENT ................................................................................................................... 10

» CHASSIS LAYOUT .............................................................................................................................14

» BLOCK DIAGRAM ..............................................................................................................................15

» DESCRIPTION OF SCHEMATIC DIAGRAMS & WAVEFORMS ........................................................ 16

» SCHEMATIC DIAGRAMS ...................................................................................................................17

» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................24

» PARTS LIST ........................................................................................................................................29

» PACKING OF THE SET ......................................................................................................................38

SPEAKER

SIZE ........................................................ 12 x 6 cm oval (2 pcs.)

VOICE COIL IMPEDANCE ............................... 8 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

Digital Terrestrial Broadcast (VHF/UHF) ....................... 2 thru 69

(EIA, Channel Plan U.S.A.)

POWER INPUT ..................................................... 120V AC, 60 Hz

POWER RATING .................................................................. 140W

PICTURE SIZE ....................................... 2,193.5 cm

(339sq inch)

CONVERGENCE ............................................................. Magnetic

SWEEP DEFLECTION .................................................... Magnetic

FOCUS ............................................... Hi-Bi-Potential Electrostatic

INTERMEDIATE FREQUENCIES

Picture IF Carrier Frequency ...... 45.75 MHz (Analog Terrestrial)

Sound IF Carrier Frequency ....... 41.25 MHz (Analog Terrestrial)

Color Sub-Carrier Frequency ..... 42.17 MHz (Analog Terrestrial)

IF Center Frequency ........................ 44 MHz (Digital Terrestrial)

(Nominal)

AUDIO POWER

OUTPUT RATING .............. 5.0W + 5.0W (at 10% distortion and

Dual CH Operate)

Specifications are subject to change without

prior notice.

ELECTRICAL SPECIFICATIONS

MODEL

SERVICE MANUAL

27SF56B

CONTENTS

27SF56B

1 2 3 4 5 6 ... 39 40

Shrnutí obsahu

Strany 1 - SERVICE MANUAL

This document has been published to be used for aftersales service only.The contents are subject to change without notice.In the interests of user-saf

Strany 2

10SERVICE ADJUSTMENTRF AGC Adjustment1. Receive a good local channel.2. Enter the service mode and select the serviceadjustment "R01".3. Set

Strany 3 - (Fire & Shock Hazard)

11Sub-Tint Adjustment1. Receive the half color bar signal.• RF INPUT (TU1101)2. Get into Y-Mute by R/C, or by setting the "V11" busdata to &

Strany 4

12ËMTS ADJUSTMENTMTS Level Adjustment1. Set the sound volume above 1.Monoral signal: 400Hz, 100% modulation2. Confirm "EX4" data is "5

Strany 5 - Front Panel

13- M E M O -27SF56B

Strany 6 - HIGH VOLTAGE CHECK

14CHASSIS LAYOUT27SF56B

Strany 7 - 1.10 - 11

15BLOCK DIAGRAM27SF56B

Strany 8 - A. VCJ IC ADJUSTMENT

16DESCRIPTION OF SCHEMATIC DIAGRAMSNOTES:1. The unit of resistance "ohm" is omitted.(K=kW=1000W, M=MW)2. All resistors are 1/16 watt, unl

Strany 9 - D. SOUND ADJUSTMENT

1787109654321AB CDEFGHSCHEMATIC DIAGRAM: CRT Unit27SF56B

Strany 10 - SERVICE ADJUSTMENT

C708C7080.33u0.33uAC 250VAC 250VFZA146WJFZA146WJABCDEFGH10987654321SCHEMATIC DIAGRAM: MAIN-1 Unit27SF56B18

Strany 11 - TEXT BOX

1716 191815141312111027SF56B19

Strany 12 - MTS ADJUSTMENT

2IMPORTANT SERVICE SAFETY PRECAUTIONËService work should be performed only by qualified service technicians who arethoroughly familiar with all safety

Strany 13 - - M E M O

2087109654321AB CDEFGHSCHEMATIC DIAGRAM: MAIN-2 Unit27SF56B

Strany 14 - CHASSIS LAYOUT

211716 191815141312111027SF56B

Strany 15 - BLOCK DIAGRAM

2287109654321AB CDEFGHSCHEMATIC DIAGRAM: 2-LINE Y/C Unit27SF56B

Strany 16 - WAVEFORMS

231716 191815141312111027SF56B

Strany 17 - SCHEMATIC DIAGRAM: CRT Unit

2487109654321AB CDEFGHPRINTED WIRING BOARD ASSEMBLIESPWB-A: MAIN Unit (Wiring Components Side)27SF56B

Strany 18 - FZA146WJFZA146WJ

251716 191815141312111027SF56B

Strany 19 - 1716 1918151413121110

2687109654321AB CDEFGHPWB-A: MAIN Unit (Components side)27SF56B

Strany 20

271716 191815141312111027SF56B

Strany 21

2887109654321AB CDEFGHPWB-D: 2-LINE Y/C Unit (Wiring Side)PWB-B: CRT Unit (Wiring Side)PWB-D: 2-LINE Y/C Unit (Chip Parts Side)27SF56B

Strany 22

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code29PICTURE TUBE★ MARK: SPARE PARTS-DELIVERY SECTION' MARK: X-RAY RELA

Strany 23

3SAFETY NOTICEMany electrical and mechanical parts in televisionreceivers have special safety-related characteristics.These characteristics are often

Strany 24

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code30FILTERS AND COILSCF302 RFiLC0449CEZZ+ X Filter ACCF401 RFiLC0446CEZZ+ X Fil

Strany 25

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code31C741 VCEA4A2AN105M+ X 1 100V Electrolytic ABC742 VCQYTA1HM683J+ X 0.068 50V

Strany 26

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code32RJ33 VRS-CY1JF000JY X 0 1/16W Metal Oxide AARJ36 VRS-CY1JF000JY X 0 1/16W M

Strany 27

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code33R744 VRS-CY1JF103JY X 10k 1/16W Metal Oxide AAR745 VRD-RA2BE683JY X 68k 1/8

Strany 28 - PWB-B: CRT Unit (Wiring Side)

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code34R2041 VRS-CY1JF333JY X 33k 1/16W Metal Oxide AAR2042 VRS-CY1JF101JY X 100 1

Strany 29 - PARTS LIST

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code35SWITCHESS2501 QSW-K0003AJZZ+ X Switch, POWER ABS2502 QSW-K0003AJZZ+ X Switc

Strany 30 - PACKAGED CIRCUITS

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code36RDA1506PRDAR5072CEFW X Heat Sink for Q1560 ACRDA1507PRDAR5072CEFW X Heat Si

Strany 31 - AC250V Ceramic AC

Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code37PACKING PARTS (NOT REPLACEMENT ITEM)S1 SPAKCC676WJZZ X Packing Case

Strany 32 - RESISTORS

38PACKING OF THE SETFRONTS4S3X1X2S2S1REARUse tape tofix the top side ofpacking case.Use 12 staples tofix the bottom sideof packing case.27SF56B

Strany 33

27SF56B

Strany 34

4Precautions for using lead-free solder1 Employing lead-free solder"PWBs" of this model employs lead-free solder. The LF symbol indicates le

Strany 35 - PWB-B CRT UNIT

Strany 36 - PWB-D 2-LINE Y/C UNIT

5LOCATION OF USER'S CONTROLFront PanelPOWERPress On.Press again Off.REMOTE CONTROL SENSORMENUPress Accesses MAIN MENU.Press again Exits MAIN MEN

Strany 37

6CIRCUIT PROTECTIONThe receiver is protected by a 4.0A fuse (F701),mounted on PWB-A, wired into one side of the ACline input.X-RADIATION PROTECTOR CIR

Strany 38 - PACKING OF THE SET

7For adjustments of this model, the bus data is converted to various analog signals by the D/A convertercircuit.Note: There are still a few analog adj

Strany 39

8V01 PICTURE 0-15 (00h-0Fh) 08 (08h)V02 TINT 0-127 (00h-7Fh) 66 (42h)V03 COLOR 0-127 (00h-7Fh) 56 (38h)V05 BRIGHT 0-127 (00h-7Fh) 64 (40h)V06 R CUT-OF

9SERVICE NUMBERDATAADJUSTMENT ITEMINITIAL VALUENOTES FIXED VALUE(HEX)RANGEEX1 FAO VOLUME 0-50 (00h-32h) 36 (24h) 24EX2 CC-POSITION 0-127 (00h-7Fh) 27