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Sharp 21KF-80S, Руководство по обслуживанию

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Sharp 21KF-80S Скачать руководство пользователя страница 36

36

21KF-80S

TROUBLESHOOTING TABLES

NO RASTER

Check F701.

Check T701 pin16 voltage.
(Approx. 290V at 220V AC)

Check Secondary Main+B.

(Approx. 118V )

Check R701,Q701

and IC701.

Blown out.

Replace the fuse.

The fuse is again blown 

Check IC701,D701,D702,

D703,D704 and C705.

Check CRT connector

K1-K5 bias.

D1001 (Power LED Bright 

Red) turns on.

D1001 (Power LED Dark 

Red) turns on.

Check C878,

R608 and D603.

Check IC801.

Check D758,IC702

and D751.

Check R605,

Q601 and Q602.

Check the
protector 

D1001 turns on 

brightly and darkly.

NVM
(IC1002)

TV PROCESSOR
(IC801)

SOUND PROCESSOR
(IC3001)

TUNER
(TU201)

See many often D1001

flashes in red.

This indicates which IC 

to

Содержание 21KF-80S

Страница 1: ... published to be used for after sales service only ELECTRICAL SPECIFICATIONS 3 IMPORTANT SERVICING NOTES 4 CONTROLS TERMINALS 5 ADJUSTMENT PROCEDURES 6 HOTEL MODE FUNCTIONS 12 LED FLASHING CODE 13 CHASSIS LAYOUTS 14 PRINTED WIRING BOARDS 15 ICs ADDITIONAL INFORMATION 20 SCHEMATIC DIAGRAMS 27 BLOCK DIAGRAMS 33 TROUBLESHOOTING TABLES 36 PARTS LISTING 39 SOURCE OF DOCUMENTATION 43 CONTENTS MODEL 21KF...

Страница 2: ...tion Data Serial 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 If you need more information please refer to the Technical Report Bulletin ...

Страница 3: ...tput Rating 4W x 2 MPO Speaker 16Ω 4W 12 x 5 cm 2pcs Convergence Self Converging System Focus Bi Potential Electrostatic Sweep Deflection Magnetic Picture Intermediate Frequency 38 9MHz Sound Carrier Trap 33 4MHz Adjacent Sound Carrier Trap 40 4MHz Adjacent Picture Carrier Trap 31 9MHz Aerial Input Impedance VHF UHF 75 ohm Unbalanced Tuning Ranges 48 25MHz thru 855 25 MHz VHF CH02 CH12 S1 S41 HYPE...

Страница 4: ... x ray radiation levels This is a problem when in close proximity to the receiver for long periods of time To reduce any risks associated with this please observe the following precautions 1 When undertaking any servicing on this chassis DO NOT increase the EHT to more than 31 0 KV at a instantaneous beam current of 1200µA 2 Ensure that during normal operation the EHT does not exceed 27 5 KV 1 5KV...

Страница 5: ...xt COLOUR buttons REVEAL button Teletext TV button Teletext HOLD button Teletext CHANNEL PROGRAMME UP DOWN buttons Selects next higher programme Selects next lower programme These are also used for menu set up STORE button Teletext SOUND MUTE button CLOCK button Teletext Sound Mode Select button INDEX button Teletext LIST Select button Teletext 26 Remote Control TV Front Euro SCART 21 Pin Terminal...

Страница 6: ...h See Figure 1 5 Keep pressing the volume down and channel up buttons until the picture appears 6 When SHARPX X VXX XX appears on the screen release the two buttons 7 The receiver is now in the service mode To move between the various service mode functions use the channel up and down buttons Use the volume buttons to change the data to the desired value The data will be stored automatically when ...

Страница 7: ... VSH 0 63 17 17 ADJ 5 H CENT Horizontal shift HS 0 63 34 34 ADJ 6 H CENT60 offset to H CENT for 60 Hz 0 31 data 16 15 20 20 FIX 7 EW Horizontal Parallelogram HP 0 63 32 32 FIX 8 HB Horizontal Bow 0 63 32 32 FIX 9 S COR S Correction SC 0 63 22 30 FIX 10 DRI RS White point Red Standard white temp 0 63 42 42 ADJ 11 DRI GS White point Green Standard white temp 0 63 42 42 ADJ 12 DRI BS White point Blue...

Страница 8: ...e or 1 enable 1 1 FIX 54 S L Sound system L 0 disable or 1 enable 0 0 FIX 55 S DK Sound system DK 0 disable or 1 enable 1 0 FIX 56 S I Sound system I 0 disable or 1 enable 1 0 FIX 57 S BG Sound system BG 0 disable or 1 enable 1 1 FIX 58 BLUE BACK Video mute at Ident loss 0 disable or 1 enable 1 1 FIX 59 VMC Video Mute at program source Change 0 disable or 1 enable 1 1 FIX 60 HTL Hotel mode 0 disab...

Страница 9: ... BLUE BACK 1 12 Turn off the receiver using the mains button 13 The G2 adjustment is now complete 2 Focus Adjustment 1 Receive a monoscope pattern signal at a level of 60 to 80 dBµV 2 Set the picture settings to normal 3 Adjust the focus potentiometer to obtain maximum definition AGC Adjustment 1 Tune the receiver into a colour bar signal on channel E 12 2 Set the RF generator to an output signal ...

Страница 10: ...ts are complete use the stand by button to turn off the set The adjustment values will be stored at this point V LIN Adjust the vertical linearity control so that the picture centring is as shown in figure 5 V AMP Adjust the vertical amplitude control so that the picture overscans as shown in figure 6 V CENT Adjust the vertical centring control so that the picture is centred as shown in figure 7 H...

Страница 11: ...S locations to obtain colour coordinates 6 Reset the TV with the mains switch button to store the adjustment and exit service mode 7 Check colour coordinates X and Y at 20 a 120 Nits It may be necessary to repeat the same procedure to obtain the above values Adjustment method 2 using the signal generator with a fixed picture signal 1 Adjust G2 2 Tune a white pattern with burst signal 3 Operate in ...

Страница 12: ... 1 The maximum volume level has been reduced from 60 to 30 For other value go to 3 2 Hotel Mode HTL VOL 3 1 5 2 Channel Setting functions have been deactivated 3 1 5 3 It is necessary to select Hotel Mode HTL to be able to set up Hotel Mode HTL VOL or Hotel Mode HTL PRG 3 1 5 4 If you do not need to set up Hotel Mode HTL VOL or HTL PRG get out from Service Mode To exit the Service Mode press the s...

Страница 13: ...the receiver off with the mains switch LED FLASHING CODE PURPOSE The led indicates the power mode occurred I2 C error and On timer INPUT Current power mode I2 C Errors On timer Processing If in STANDBY mode and On timer inactive then switch LED off If in STANDBY and On timer active set LED to blinking switch on and off at 1 Hz with a 50 duty cycle If in POWER ON mode switch LED on If an I2 C error...

Страница 14: ...14 21KF 80S CHASSIS LAYOUTS PWB A Mother unit F7340N8 PWB B CRT unit F7341N0 PWB C Jack unit FB758ZZ 21HS50F 21HS50C 21HS50C ...

Страница 15: ...15 21KF 80S PRINTED WIRING BOARDS F 7341N0 CRT Unit PWB Components side 0 1 2 3 4 Y X 1 2 3 4 5 6 0 1 2 3 4 5 6 Y X 10 1 2 3 4 5 6 7 8 9 FB758ZZ Jack Unit PWB Component side ...

Страница 16: ...16 21KF 80S F 7340N8 Mother Unit PWB Component side Page 17 22 23 24 25 17 18 19 20 21 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 Y X 0 10 11 12 13 1 2 3 4 5 6 7 8 9 ...

Страница 17: ...17 21KF 80S F 7340N8 Mother Unit PWB Component side Page 16 Y X 22 23 24 25 17 18 19 20 21 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 20 21 22 23 24 25 12 13 14 15 16 17 18 19 ...

Страница 18: ...18 21KF 80S F 7340N8 Mother Unit PWB Copper side Page 19 22 23 24 25 17 18 19 20 21 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 Y X 0 10 11 12 13 1 2 3 4 5 6 7 8 9 ...

Страница 19: ...19 21KF 80S F 7340N8 Mother Unit PWB Copper side Page 18 Y X 22 23 24 25 17 18 19 20 21 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 20 21 22 23 24 25 12 13 14 15 16 17 18 19 ...

Страница 20: ...upply current 135 60 mA Input voltages ViVIFrms video IF amplifier sensitivity RMS value 75 µV ViSIF rms QSS sound IF amplifier sensitivity RMS value 60 µV ViAUDIO rms external audio input RMS value 500 mV ViCVBS p p external CVBS Y input peak to peak value 1 0 V ViCHROMA p p external chroma input voltage burst amplitude peak to peak value 0 3 V ViRGB p p RGB inputs peak to peak value 0 7 V ViYIN p ...

Страница 21: ...SERT CCC WHITE P ADJ 80C51 CPU I 2 C BUS TRANSCEIVER ROM RAM TELETEXT ACQUISITION 1 10 PAGE MEMORY TELETEXT OSD DISPLAY R G B BL Y U V H V REF ENHANCED VST PWM DAC VST OUT I O PORTS I O PORTS 4x 3 3 V RESET LED OUT 2x ADC IN 4x VPE EW GEOMETRY GEOMETRY EHTO EWD R V G Y B U BL RGB YUV INSERT R G B REF CVBS SYNC H V COR 27 37 38 33 20 29 28 34 44 60 55 59 58 57 10 11 2 3 4 5 8 1 62 64 9 12 54 56 61 ...

Страница 22: ...coupling AVL EWD 1 20 Automatic Volume Levelling East West drive output VDRB 21 vertical drive B output VDRA 22 vertical drive A output IFIN1 23 IF input 1 IFIN2 24 IF input 2 IREF 25 reference current input VSC 26 vertical sawtooth capacitor TUNERAGC 27 tuner AGC output AUDEEM SIFIN1 1 28 audio deemphasis or SIF input 1 DECSDEM SIFIN2 1 29 decoupling sound demodulator or SIF input 2 GND2 30 groun...

Страница 23: ...nd B input U B Y input BCLIN 49 beam current limiter input V guard input note 2 BLKIN 50 black current input V guard input note 2 RO 51 Red output GO 52 Green output BO 53 Blue output VDDA 54 analog supply of Teletext decoder and digital supply of TV processor 3 3 V VPE 55 OTP Programming Voltage VDDC 56 digital supply to core 3 3 V OSCGND 57 oscillator ground supply XTALIN 58 crystal oscillator i...

Страница 24: ...ing handbook halfpage MGU231 TEA1507 1 2 3 4 VCC GND CTRL DEM DRAIN HVS DRIVER Isense 8 7 6 5 Pin configuration ndbook full pagewidth SUPPLY MANAGEMENT internal supply UVLO start M level VCC 1 2 3 GND S1 CTRL FREQUENCY CONTROL VOLTAGE CONTROLLED OSCILLATOR LOGIC LOGIC OVER VOLTAGE PROTECTION OVERPOWER PROTECTION short winding soft start S2 OVER TEMPERATURE PROTECTION S Q R UVLO Q MAXIMUM ON TIME P...

Страница 25: ... Output Standby Input GND N C Volume Pin No Description 1 Vcc 2 Ch Output 3 GND 4 Ch Output 5 Standby 6 Ch Input 7 GND 8 N C 9 Volume Pin No Pin Name 1 Inverting Input 2 Power Supply 3 Pump up Output 4 GND 5 Vertical Output 6 Vertical Output Power Supply 7 Non inverting Input Non inverting Input Output Vcc Output GND Pump Up Out Vcc Inverting Input 1 2 3 4 5 6 7 Pump Up Thermal Protection Amp ...

Страница 26: ...2 NC NC ANA_IN1 ANA_IN TESTEN XTAL_IN XTAL_OUT AVSUP TP D_CTR_I O1 D_CTR_I O0 ADR_SEL STANDBYQ MSP 34x5G 34 35 36 37 38 39 40 41 42 43 44 22 21 20 19 18 17 16 15 14 13 12 1 2 3 4 5 6 7 8 9 10 11 33 32 31 30 29 28 27 26 25 24 23 Simplified functional block diagram of MSP 34x5G Source Select Loud SCART1 SCART1 SCART2 MONO De modulator speaker Sound Processing DAC ADC Loud DAC ADC Sound IF1 speaker I...

Страница 27: ... P µµF 4 The capacitor with Part No RC FZ9XXXBMNJ is de signed to with stand 63V 5 The capacitor with Part No RC FZ4XXXBMNJ is de signed to with stand 50V Note CAUTION This circuit diagram is original one therefore there may be slight difference from yours Important safety note Parts marked with are important for maintaining the safety of the set Be sure to re place these parts with specified ones...

Страница 28: ...28 21KF 80S ...

Страница 29: ...29 21KF 80S Schematic Diagram of CRT Unit F7341N0 1 I H G F E D C B A 2 3 4 5 6 7 Schematic Diagram of Jack Unit FB758ZZ C ...

Страница 30: ...30 21KF 80S Page 31 1 I H G F E D C B A 2 3 4 5 6 7 Schematic Diagram of Mother Unit F7340N8 ...

Страница 31: ...31 21KF 80S Schematic Diagram of Mother Unit F7340N8 8 9 10 11 12 13 14 I H G F E D C B A Page 30 Page 32 ...

Страница 32: ...32 21KF 80S Schematic Diagram of Mother Unit F7340N8 8 9 10 11 12 13 14 I H G F E D C B A Page 31 ...

Страница 33: ...33 21KF 80S CRT Unit F7341N0 1 I H G F E D C B A 2 3 4 5 6 7 BLOCK DIAGRAMS ...

Страница 34: ...34 21KF 80S 1 I H G F E D C B A 2 3 4 5 6 7 Page 35 Mother unit F7340N8 C ...

Страница 35: ...35 21KF 80S 8 9 10 11 12 13 14 I H G F E D C B A Page 34 Mother unit F7340N8 ...

Страница 36: ...wn Check IC701 D701 D702 D703 D704 and C705 Check CRT connector K1 K5 bias D1001 Power LED Bright Red turns on D1001 Power LED Dark Red turns on Check C878 R608 and D603 Check IC801 Check D758 IC702 and D751 Check R605 Q601 and Q602 Check the protector D1001 turns on brightly and darkly NVM IC1002 TV PROCESSOR IC801 SOUND PROCESSOR IC3001 TUNER TU201 See many often D1001 flashes in red This indica...

Страница 37: ...lour produced in B W broadcast Check IC801 R801 R802 D804 D805 and D806 Is the white balance properly adjusted Readjusted the white balance The picture colour is yellow The picture colour is magenta The picture colour is cyan Check Q872 Q887 and their adjacent circuits Check Q871 Q883 and their adjacent circuits Check Q870 Q885 and their adjacent circuits ...

Страница 38: ...al appear at pin38 of IC801 Does noise or signal appear at pin23 and 24 of IC801 Check IC801and its related circuit Check Q401 Q402 and its related circuit Check pin1 2 of SF201 Tuner and related circuit Check pin37 of IC801and related circuit Check pin38 of IC801 Check pin27 of IC801 Tuner and related circuit Check the Tuner AGC at TP201 NO SOUND Does signal appear at pin6 of IC302 303 Does signa...

Страница 39: ...nt part which does not have the same safety characteristics as the factory recommended is not permitted Replacement parts not shown in this service manual may create shock fire or other hazards HOW TO ORDER REPLACEMENT PARTS To have your order completed promptly and correctly please supply the following information 1 MODEL NUMBER 3 PART NO 5 CODE 2 REF NO 4 DESCRIPTION 6 QUANTITY _ _ _ _ _ b cc d ...

Страница 40: ...40 21KF 80S d d d d f 150U 400V f d _ _ f f f f f g g ...

Страница 41: ...41 21KF 80S d d d h d h d d d d d d _ _ _ ...

Страница 42: ...42 21KF 80S d d d d d d d d d d d d d d d d d d d _ d d d d d d d d d d d d d d d _ _ _ _ _ _ _ ...

Страница 43: ...on 2 11 2 TEA1507 Philips Data Sheet TEA1507 GreenChipTM II SMPS control IC Preliminary specification 2000Dec05 3 AN7523 Matsushita Electronics Corporation Specifications AN7523 Product Specifications Doc No SDSC PSE AN7503 Eff Date 23 FEB 01 4 AN5522 Matsushita Electronics Corporation Specifications AN5522 Product Specifications Doc No SDSC PSE AN5522 Eff Date 21 NOV 2000 5 MSP34x5G Micronas Prel...

Страница 44: ...itted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP ELECTRONICA ESPAÑA S A TV Division Engineering Dept Polígono Industrial Can Sant Joan Sant Cugat del Vallès Barcelona Spain Think Ecology please use RECYCLED PAPER ...

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