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Sharp 21HS-50N, Service Manual

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Sharp 21HS-50N Service Manual Download Page 42

42

21HS-50N

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1.1

1.2

1.3

1.4

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DOCUMENTATION OF SOURCES.

1.

TDA9350

, Philips Data Sheet:

          TDA935X/6X/8X PS/N2 series, TV signal processor-Teletext decoder with embedded m-Controller. Tentative Device
         Specification, 2001 Apr 12, Version: 2.85.

2.

TEA1507

, Philips Data Sheet:

         TEA1507 GreenChipII SMPS controlIC. 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 Preliminary Data sheet.

             MSP34x5g Multistandard Sound Processor Family. Edition March 5,2001

                   6251-480-3PD

3

Summary of Contents for 21HS-50N

Page 1: ...o its original condition and only parts identical to those specified should be used This document has been published to be used for after sales service only ELECTRICAL SPECIFICATIONS 3 IMPORTANT SERVICING NOTES 4 CONTROLS TERMINALS 5 SERVICE ADJUSTMENTS 6 CHASSIS LAYOUT 12 LED FLASHING CODE 13 PRINTED WIRING BOARDS 13 ICs ADDITIONAL INFORMATION 18 SCHEMATIC DIAGRAM WAVE FORMS 26 BLOCK DIAGRAM 32 T...

Page 2: ...f 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 Service Manual update log sheet Part No Technical Report No Technical Bulletin No Cause Solution Page No Application Data Serial No ...

Page 3: ... Magnetic Aerial Input Impedance VHF UHF 75 ohm Unbalanced Tuning Ranges 48 25MHz thru 855 25 MHz VHF CH02 CH12 S1 S41 HYPERBAND UHF CH21 CH69 Picture Intermediate Frecuency 38 9MHz Sound Carrier Trap 32 4MHz Adjacent Sound Carrier Trap 40 4MHz Adjacent Picture Carrier Trap 31 9MHz WARNING The chassis in this receiver is partially hot Use an isolation transformer between the line cord plug and pow...

Page 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 30 5 KV at a instantaneous beam current of 1300µA 2 Ensure that during normal operation the EHT does not exceed 25 0 KV 1 5KV...

Page 5: ...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 MENU CH Power button Power On Timer indicator Remote Control Sensor Menu button Volume Up Down buttons Channel Up Down buttons Remote Control TV Front Euro SCART 21 Pin Terminal 1 Audio right out...

Page 6: ...witch See Fig 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...

Page 7: ...temp 0 32 9 9 FIX 16 DRI RC White point Red Cold white temp 0 32 9 9 FIX 17 DRI GC White point Green Cold white temp 0 32 9 9 FIX 18 DRI BC White point Blue Cold white temp 0 32 16 16 FIX 19 SUB VOL Max Volume 0 63 60 60 FIX 20 SUB CON Sub Contrast 0 63 63 63 FIX 21 SUB COL Sub Colour 0 63 25 25 FIX 22 SUB BRI Sub Brightness 0 63 34 34 FIX 23 TINT Sub Tint 0 63 32 32 FIX 24 SUB SHP Sub Sharpness 0...

Page 8: ... 0 FIX 53 ACL Auto Colour Limit 0 disable 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 ...

Page 9: ...back on again set 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 ...

Page 10: ...justments are complete use the standby 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 figu...

Page 11: ...ations 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 servi...

Page 12: ...12 21HS 50N CHASSIS LAYOUT Mother unit CRT unit ...

Page 13: ...ing If in STANDBY mode and On timer in active 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 occurred let the LED blink at 1 Hz 50 duty cycle For the blinking times see the Table below Note Only when an I2 C error occurs for a number of times or for a number of seconds the I...

Page 14: ...14 21HS 50N F 7340N6 PRINTED WIRING BOARD Component side Page 15 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 ...

Page 15: ...15 21HS 50N F 7340N6 PRINTED WIRING BOARD Component side Page 14 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 ...

Page 16: ...16 21HS 50N F 7340N6 PRINTED WIRING BOARD Copper 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 ...

Page 17: ...17 21HS 50N F 7340N6 PRINTED WIRING BOARD Copper 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 ...

Page 18: ...S value 500 mV Io AGCOUT tuner AGC output current range 0 5 mA VoRGB p p RGB output signal amplitudes peak to peak value 2 0 V IoHOUT horizontal output current 10 mA IoVERT vertical output current peak to peak value 1 mA IoEWD EW drive output current 1 2 mA ICs ADDITIONAL INFORMATION TDA9350 IC801 handbook halfpage XXX MXXxxx 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 ...

Page 19: ...CONTR BRIGHTN OSD TEXT INSERT 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...

Page 20: ...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 ground 2 for TV processo...

Page 21: ...ut B2 UIN 48 2nd 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 crysta...

Page 22: ...ENT SOURCE 0 75 V 0 5 V 5 Isense 6 DRIVER MGU230 4 DEM 8 DRAIN 7 HVS n c OCP LEB blank Iss 2 5 V burst detect Block diagram PINNING SYMBOL PIN DESCRIPTION VCC 1 supply voltage GND 2 ground CTRL 3 control input DEM 4 input from auxiliary winding for demagnetization timing OVP and OPP Isense 5 programmable current sense input DRIVER 6 gate driver output HVS 7 high voltage safety spacer not connected...

Page 23: ...rcuit Function Block Diagram Pin Descriptions Note Do not apply voltage or current to NC pin from outside 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 Pin Descriptions 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 Circuit Functio...

Page 24: ...0 3 6 0 V dVSUP23 Voltage between AVSUP and DVSUP AVSUP DVSUP 0 5 0 5 V PTOT Package Power Dissipation PSDIP64 PSDIP52 PQFP80 PLQFP64 PMQFP44 AHVSUP DVSUP AVSUP 1300 1200 1000 960 960 mW mW mW mW mW VIdig Input Voltage all Digital Inputs 0 3 VSUP2 0 3 V IIdig Input Current all Digital Pins 20 20 mA1 VIana Input Voltage all Analog Inputs SCn_IN_s 2 MONO_IN 0 3 VSUP1 0 3 V IIana Input Current all An...

Page 25: ...ut Select PMQFP44 package CAPL_M AHVSS AGNDC SC2_IN_L SC2_IN_R ASG SC1_IN_L SC1_IN_R VREFTOP MONO_IN AVSS RESETQ I2S_DA_IN2 DVSS DVSUP ADR_CL I2S_DA_IN1 I2S_DA_OUT I2S_WS I2S_CL I2C_DA I2C_CL NC SC1_OUT_L SC1_OUT_R VREF1 NC AHVSUP DACM_L DACM_R VREF2 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 1...

Page 26: ...µF unless otherwise noted P µµF 4 The capacitor with Part No RC FZ9XXXBMNJ is designed to with stand 63V 5 The capacitor with Part No RC FZ4XXXBMNJ is designed 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 replace these par...

Page 27: ...27 21HS 50N ...

Page 28: ...28 21HS 50N Page 29 1 I H G F E D C B A 2 3 4 5 6 7 SCHEMATIC DIAGRAM OF MOTHER UNIT F7340N6 00 Version ...

Page 29: ...29 21HS 50N SCHEMATIC DIAGRAM OF MOTHER UNIT F7340N6 00 Version 8 9 10 11 12 13 14 I H G F E D C B A Page 28 Page 30 ...

Page 30: ...30 21HS 50N SCHEMATIC DIAGRAM OF MOTHER UNIT F7340N6 00 Version 8 9 10 11 12 13 14 I H G F E D C B A Page 29 ...

Page 31: ...31 21HS 50N SCHEMATIC DIAGRAM OF CRT F7341N0 00 Version 1 I H G F E D C B A 2 3 4 5 6 7 ...

Page 32: ...32 21HS 50N CRT UNIT BLOCK DIAGRAM 1 I H G F E D C B A 2 3 4 5 6 7 ...

Page 33: ...33 21HS 50N MOTHER UNIT BLOCK DIAGRAM 1 I H G F E D C B A 2 3 4 5 6 7 ...

Page 34: ...ut again Check T701 pin 16 voltage Does 290V appear at pin 16 of T701 SMT Transf YES NO END NO YES Check R701 S701 and AC in Does 110V appear in Main B C752 Check F751 D758 C702 IC702 Q752 and R615 line NO YES See Many often D1001 Flashes in red this indicates which IC to check up NO YES Check C878 NO YES Check IC801 Heater TROUBLESHOOTING TABLES 2 Times Flash 3 Times Flash 5 Times Flash 6 Times F...

Page 35: ...ERTICAL SCAN Check IC501 bias Normal Abnormal Check C502 and C514 Check IC501 NO SPECIFIC COLOUR NO YES Is some colour produced in B W broadcast reception Check IC801 R801 R802 YES Is the white balance R803 D804 D805 D806 properly adjusted and Q801 NO Readjusted the white balance The picture colour is cyan The picture colour is magenta The picture colour is yellow Check Q870 Q885 and Check Q871 Q8...

Page 36: ... IC801 circuit NO YES Check the tuner Does noise or AGC at TP201 signal appear at Check Q401 pin23 and 24 Q402 and related Normal Abnormal of IC801 circuit NO YES Check pin38 Check pin27 Check pin1 2 of of IC801 of IC801 Tuner SF201 Tuner Check pin37 of and related circuit and related IC801 and circuit related circuit NO SOUND CIRCUITS TO BE CHECKED NO Audio Output Circuit Does signal appear Check...

Page 37: ...01 VP XF100K0000 PEAK COIL 10UH 10 1 8W S AA AA L 0802 VP XF100K0000 PEAK COIL 10UH 10 1 8W S AA AA L 1002 VP XF100K0000 PEAK COIL 10UH 10 1 8W S AA AA L 3001 VP DF100K0000 PEAK COIL 10UH 10 S AA AA L 3002 VP DF100K0000 PEAK COIL 10UH 10 S AA AA L 3003 VP DF100K0000 PEAK COIL 10UH 10 S AA AA L 3030 VP CF3R3K0000 PEAK COIL 3 3UH 10 S AB AB L 3050 VP CF3R3K0000 PEAK COIL 3 3UH 10 S AB AB L 3060 VP C...

Page 38: ... S CHIP CAP 0 001UF 50V S AA AA C 0602 VCEA0A1CW477M ELEC C 470UF 20 16V S AA AA C 0603 VCEA0A1CW107M ELEC C 100UF 20 16V S AA AA C 0604 VCKYPA1HF103Z C CAPACITOR 0 01U F 50V S AA AA C 0605 VCEA0A1AW227M ELEC C 220UF 20 10V S AA AA C 0606 VCEA0A1CW107M ELEC C 100UF 20 16V S AA AA C 0607 VCKYPA1HF103Z C CAPACITOR 0 01U F 50V S AA AA C 0608 VCKYCY1EF104Z S CHIP TAPE CAP 0 1UF 25V S AA AA C 0609 VCKY...

Page 39: ...AA AA R 0452 VRS CY1JF104J S CHIP RES 100K OHM TAPED S AA AA R 0453 VRS CY1JF223J S CHOP REG 22K OHM T S AA AA R 0454 VRS CY1JF562J S CHIP RES 5 6K OHM TAPED S AA AA REF No PARTS DESCRIPTION SN CODE EX CODE R 0455 VRD RA2EE750J RES 75 OHM 5 1 4W S AA AA R 0456 VRD RA2EE750J RES 75 OHM 5 1 4W S AA AA R 0457 VRD RA2EE750J RES 75 OHM 5 1 4W S AA AA R 0458 VRS CY1JF103J S C RESISTOR 10K OHM S AA AA R ...

Page 40: ...S CHIP RES 33K OHM TAPED S AA AA R 3012 VRS CY1JF103J S C RESISTOR 10K OHM S AA AA RJ 0001 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0002 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0004 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA REF No PARTS DESCRIPTION SN CODE EX CODE RJ 0008 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0009 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0010 VRS...

Page 41: ...0894 VRD RA2BE102J RES 1KOHM 5 1 8W S AA AA R 0895 VRD RA2BE471J RES 470 OHM 5 1 8W S AA AA R 0896 VRD RA2BE471J RES 470 OHM 5 1 8W S AA AA R 0899 VRD RA2BE471J RES 470 OHM 5 1 8W S AA AA MISCELLANEOUS PARTS LHLDC3009CEFN ADG COIL HOLDER S AA AB LHLDC3500BMFW HOLDER S AA AB LHLDW1514BM00 HOLDER UNEX 2233 S AA AA QEARC0009BMZZ C EARTH ELECTROMONTAJES S AB AF P 0851 QPLGN0441CEZZ PLUG 4PIN S AA AA P...

Page 42: ...t TEA1507 GreenChipII SMPS controlIC 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 Preliminary Data sheet MSP34x5g Multistanda...

Page 43: ...43 21HS 50N NOTES ...

Page 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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