Sharp 21HT-15CS Service Manual Download Page 43

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21HT-15C
21HT-16C

SOURCE OF DOCUMENTATION

TDA9351

, 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.

TEA1507

, Philips Data Sheet:

TEA1507 GreenChipII SMPS controlIC. Preliminary specification, 2000Dec05.

AN7523

, Matsushita Electronics Corporation Specifications:

AN7523 Product Specifications. Doc No. SDSC-PSE-AN7503, Eff. Date 23-FEB-01.

AN5522

, Matsushita Electronics Corporation Specifications:

AN5522 Product Specifications. Doc No. SDSC-PSE-AN5522, Eff. Date 21-NOV-2000.

Summary of Contents for 21HT-15CS

Page 1: ...ondition 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 HOTEL MODE FUNCTIONS 12 CHASSIS LAYOUTS 14 LED FLASHING CODE 15 PRINTED WIRING BOARDS 15 ICs ADDITIONAL INFORMATION 20 SCHEMATIC DIAGRAMS 26 BLOCK DIAGRAMS 32 T...

Page 2: ...plication 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 ...

Page 3: ...rap B G 31 9MHz D K 30 9MHz Aerial Input Impedance VHF UHF 75 ohm Unbalanced Tuning Ranges 48 25MHz thru 855 25 MHz VHF CH02 CH12 R01 R12 S1 S41 HYPERBAND UHF CH21 CH69 WARNING The chassis in this receiver is partially hot Use an isolation transformer between the line cord plug and power receptacle when servicing this chassis To prevent electric shock do not remove cover No user serviceable parts ...

Page 4: ...rdous 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 ...

Page 5: ...button Teletext HOLD button Teletext STORE button Teletext CHANNEL PROGRAMME UP DOWN button Selects next higher programme Selects next lower programme These are also used for menu set up 6 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 output 2 Audio righ...

Page 6: ...he mains switch 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 automati...

Page 7: ...ift VSH 0 63 32 17 ADJ 5 H CENT Horizontal shift HS 0 63 32 34 ADJ 6 H CENT60 offset to H CENT for60 Hz 0 31 data 16 15 16 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 0 22 FIX 10 DRI RS White point Red Standard white temp 0 63 32 42 ADJ 11 DRI GS White point Green Standard white temp 0 63 32 42 ADJ 12 DRI BS White point Blu...

Page 8: ...able or 1 enable 0 1 FIX 53 S L Sound system L 0 disable or 1 enable 0 0 FIX 54 S DK Sound system DK 0 disable or 1 enable 1 1 FIX 55 S I Sound system I 0 disable or 1 enable 1 0 FIX 56 S BG Sound system BG 0 disable or 1 enable 1 1 FIX 57 BLUE BACK Video mute at Ident loss 0 disable or 1 enable 1 1 FIX 58 VMC Video Mute at program source Change 0 disable or 1 enable 1 1 FIX 59 HTL Hotel mode 0 di...

Page 9: ...n 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 an out...

Page 10: ...n adjustments 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...

Page 11: ... locations to obtain colour coordinates 6 Reset the T V 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 ...

Page 12: ... Range 0 to 1 Service Mode Indication HTL 3 1 2 Access the Service Mode see this procedure on page 6 3 1 3 Select HTL by using channel up down buttons 3 1 4 Change initial value from 0 off to 1 on 3 1 5 Notes 3 1 5 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...

Page 13: ...RG 3 3 2 To activate this Hotel Mode it is necessary activate previously Hotel Mode HTL 3 3 4 Select HTL PRG by using channel up down buttons 3 3 3 The initial value to 255 ensures that the TV Set starts up in the same program number that it was been displayed before turn it off 3 3 4 If you want to fix other program number proceed as follows set the value according to your necessities by using vo...

Page 14: ...14 21HT 15C 21HT 16C CHASSIS LAYOUTS Mother unit CRT unit 21HS50F 21HS50C 21HS50C ...

Page 15: ...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 I2 C error is handled by the system that is only then the set will go to standby the led starts blinking PRINTED WIRING BOARDS F 7341N0 PWB Components side 0 1 2 3 4 5 6 Y X 10 1 2 3 4 5 6 7 8 9 IC Module Name Slave Address Bus Error LED Remarks ...

Page 16: ...16 21HT 15C 21HT 16C F 7340N7A 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 ...

Page 17: ...21HT 15C 21HT 16C 17 F 7340N7A 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 ...

Page 18: ...18 21HT 15C 21HT 16C F 7340N7A 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 ...

Page 19: ...21HT 15C 21HT 16C 19 F 7340N7A 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 ...

Page 20: ...s RMS 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 TDA9351 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...

Page 21: ...RIVE 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 ...

Page 22: ...WD 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 ground 2 for TV pro...

Page 23: ... input 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 cr...

Page 24: ...CURRENT 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 conne...

Page 25: ...ircuit 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 Functi...

Page 26: ...oted 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 ...

Page 27: ...21HT 15C 21HT 16C 27 ...

Page 28: ...28 21HT 15C 21HT 16C Page 29 1 I H G F E D C B A 2 3 4 5 6 7 Schematic Diagram of Mother Unit F7340N7A 00 Version ...

Page 29: ...21HT 15C 21HT 16C 29 Schematic Diagram of Mother Unit F7340N7A 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 21HT 15C 21HT 16C Schematic Diagram of Mother Unit F7340N7A 00 Version 8 9 10 11 12 13 14 I H G F E D C B A Page 29 ...

Page 31: ...21HT 15C 21HT 16C 31 Schematic Diagram of CRT Unit F7341N0 00 Version 1 I H G F E D C B A 2 3 4 5 6 7 ...

Page 32: ...32 21HT 15C 21HT 16C 1 I H G F E D C B A 2 3 4 5 6 7 Page 33 BLOCK DIAGRAMS Mother Unit ...

Page 33: ...21HT 15C 21HT 16C 33 8 9 10 11 12 13 14 I H G F E D C B A Page 32 Mother Unit ...

Page 34: ...34 21HT 15C 21HT 16C CRT Unit 1 I H G F E D C B A 2 3 4 5 6 7 ...

Page 35: ... D703 D704 C705 Q701 Check F701 Replace the fuse Does F701 appear blown out 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 T...

Page 36: ... 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 Q883 and ...

Page 37: ...data check Does noise or Check IC801 signal appear at and its related Normal pin38 of 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 cir...

Page 38: ...COIL 27UH 10 S AA AB L 0308 VP CF3R3K0000 PEAK COIL 3 3UH 10 S AB AB L 0351 VP DF3R3K0000 PEAK COIL 3 3UH 10 S AB AB L 0353 VP DF3R3K0000 PEAK COIL 3 3UH 10 S AB AB L 0354 VP DF3R3K0000 PEAK COIL 3 3UH 10 S AB AB L 0403 VP XF120K0000 PEAK COIL 12UH 10 1 8W S AA AA L 0451 VP DF3R3K0000 PEAK COIL 3 3UH 10 S AB AB L 0602 RCILP0225CEZZ COIL SL_A TOKYO S AA AD L 0701 RCILF0111BMZZ COIL HR 19043 S AE AL...

Page 39: ...RTS DESCRIPTION SN CODE EX CODE 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 VCKYPA2HB102K CERAM C 1NF 10 500V S AA AA C 0610 VCFYSB2EB823J POL FILM C 82NF 5 100V S AA AB C 0611 VCFPVC3CA912H PP FILM C 9 1NF 3 1600V S AA AC C 0614 V...

Page 40: ...F334J S CHIP RES 330K OHM TAPED S AA AA R 0531 VRD RA2BE101J RES 100 OHM 5 1 8W S AA AA REF No PARTS DESCRIPTION SN CODE EX CODE R 0532 VRD RA2BE101J RES 100 OHM 5 1 8W S AA AA R 0533 VRD RA2BE393J RES 39KOHM 5 1 8W S AA AA R 0603 VRD RA2BE102J RES 1KOHM 5 1 8W S AA AA R 0604 VRD RA2HD472J RES 4 7KOHM 5 1 2W S AA AA R 0605 VRS KT3LB332J MET OX RES 3 3KOHM 5 3W S AA AD R 0606 VRD RA2HD102J RES 1KOH...

Page 41: ...J S CHIP RES 0 OHM TAPED S AA AA RJ 0036 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0044 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0046 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0047 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0048 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0055 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA AA RJ 0056 VRS CY1JF000J S CHIP RES 0 OHM TAPED S AA...

Page 42: ... JBTN 1082BMSA UP DOWN BUTTON S AA AD 1 4 JBTN 1081BMSA POWER BUTTON S AA AC 2 GCABB1129BMKA REAR CABINET S AP AZ 3 XTASB40P20000 SCREW S AA AA 21HT15CS 21HT16CS CABINET PARTS SILVER 1 CCABA1368BMV0 CABINET SET 21HT15SDES S AT BE 1 1 HBDGB3508BMSB SHARP BADGE S AC AG 1 2 HDECQ0069BMSA DECORATION POWER S AA AC 1 3 JBTN 1082BMSB BUTTON S AA AD 1 4 JBTN 1081BMSA POWER BUTTON S AA AC 2 GCABB1129BMKB R...

Page 43: ...tion 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 ...

Page 44: ...ransmitted 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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