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Sharp 21HS-50H Service Manual

Pal i system colour television
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See also: Operating Manual
ELECTRICAL SPECIFICATION.........................3
IMPORTANT SERVICING NOTES ...................4
CONTROLS & TERMINALS..............................5
SERVICE ADJUSTMENTS................................6
CHASSIS LAYOUT...........................................12
LED FLASHING CODE....................................13

SHARP CORPORATION

SERVICE MANUAL

PAL I SYSTEM COLOUR TELEVISION
21HS-50H
MODEL
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
PRINTED WIRING BOARDS...........................13
ICs ADDITIONAL INFORMATION...................18
BLOCK DIAGRAM...........................................32
TROUBLESHOOTING TABLES......................34
PARTS LISTING.............................................37
1
21HS-50H
SEBD21HS50H01
Issued: 24th October 2001
GA-1E
CHASSIS
This document has been published to
be used for after sales service only.

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Summary of Contents for Sharp 21HS-50H

  • Page 1: Table Of Contents

    21HS-50H SERVICE MANUAL SEBD21HS50H01 Issued: 24th October 2001 GA-1E CHASSIS PAL I SYSTEM COLOUR TELEVISION 21HS-50H MODEL 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 21HS-50H SERVICE MANUAL UPDATE LOG SHEET Technical Report No. Application Cause / Solution Part No. Page No. Technical Bulletin No. 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.

  • Page 3: Electrical Specification

    21HS-50H ELECTRICAL SPECIFICATIONS •Sound Carrier Trap .......32.9MHz •Power Input .......220V-240 Volts AC 50Hz •Power Consumption Normal Operation........43W •Adjacent Sound Carrier Trap ....40.9MHz Stand-by Operation........3W •Audio Power Output Rating ....4W x 2(MPO) •Adjacent Picture Carrier Trap ....30.9MHz Ω Speaker........16 4W, 9 x 5 cm,2pcs Convergence......Self Converging System...

  • Page 4: Important Servicing Notes

    21HS-50H 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: Controls & Terminals

    21HS-50H Location of Controls Remote Control Infrared Transmitter Window Aim this window at the infrared sensor on your TV set CALL ( )/CHILD LOCK ( ) button TV/VIDEO Select button TV/VIDEO Single/Double Entry button ( POWER/STANDBY ( ) button COLOUR buttons...

  • Page 6: Service Adjustment

    21HS-50H SERVICE ADJUSTMENT • SERVICE MODE FUNCTION • All required adjustments for servicing this TV set, may be done in “service mode”, excepting G2 and FOCUS. HOW TO ACCESS THE SERVICE MODE Turn the receiver on and ensure that it is tuned into a test pattern.
  • Page 7 21HS-50H • SERVICE ADJUSTMENTS AND DATA LIST The table below shows the various service mode positions, range of values and default value. The columns are headed as follows. Heading: Description: This is what will appear on the screen when at this position Function This is the description of the mode’s function...
  • Page 8 21HS-50H No. OSD Function Range Initial Default FIX/ADJ 25 HTL-VOL Max Hotel Volume 0...63 26 HTL-PRG Hotel Program number 0...99 or > 99 for none 27 RGB OSD RGB Reference 0...15 28 SEARCH-SYS Sound system for auto turning 0(L-BG),1(BG),2(I),3(DK) 29 CUT-R Black Level off-set R [BLR] 0...63...

  • Page 9: Screen Adjustment

    21HS-50H • SCREEN ADJUSTMENT 1. G2 Adjustment Enter the service mode (see page 6). Use the channel up or channel down buttons to enter the << BLUE-BACK >> function.  “  9GF Set this to << BLUE-BACK: 0 >>, i.e. blue background is turned off.
  • Page 10 21HS-50H • GEOMETRY ADJUSTMENT PROCEDURE To adjust the geometry, follow the procedure outlined below: 1.Tune the set into a Philips test pattern. 2.Enter the service mode as described on page 6. 3.Use the channel up or channel down buttons to enter the desired mode 4.Use the volume buttons to achieve correct setting.
  • Page 11 21HS-50H •COLOUR ADJUSTMENT PROCEDURE The following adjustments should only be carried out when the CRT or IC801 are replaced. NOTES: • This adjustment must be done after warming up the unit for 30 minutes or longer with a beam current over 700 µA.

  • Page 12: Chassis Layout

    21HS-50H CHASSIS LAYOUT MOTHER UNIT CRT UNIT...

  • Page 13: Led Flashing Code

    21HS-50H LED FLASHING CODE PURPOSE: The led indicates the power mode,ocurred I C error and On timer INPUT: - Current power mode C Errors - On timer Processing: - If in STANDBY mode and On timer in-active then switch LED off.
  • Page 14 21HS-50H F 7340N4 PRINTED WIRING BOARD. Components side.
  • Page 15 21HS-50H F 7340N4 PRINTED WIRING BOARD. Components side.
  • Page 16 21HS-50H F 7340N4 PRINTED WIRING BOARD. Copper side.
  • Page 17 21HS-50H F 7340N4 PRINTED WIRING BOARD. Copper side.

  • Page 18: Ics Additional Information

    21HS-50H ICs ADDITIONAL INFORMATION:TDA9350(IC801) QUICK REFERENCE DATA SYMBOL PARAMETER MIN. TYP. MAX. UNIT Supply − − supply voltages 8.0/3.3 − − supply current 135/60 Input voltages − − µV video IF amplifier sensitivity (RMS value) iVIFrms) − − µV QSS sound IF amplifier sensitivity (RMS value) iSIF(rms) −...
  • Page 19 21HS-50H ICs ADDITIONAL INFORMATION:TDA9350(IC801) BLOCK DIAGRAM...
  • Page 20 21HS-50H ICs ADDITIONAL INFORMATION:TDA9350(IC801) PINNING SYMBOL DESCRIPTION P1.3/T1 port 1.3 or Counter/Timer 1 input P1.6/SCL port 1.6 or I C-bus clock line P1.7/SDA port 1.7 or I C-bus data line P2.0/TPWM port 2.0 or Tuning PWM output P3.0/ADC0/PWM0 port 3.0 or ADC0 input or PWM0 output P3.1/ADC1/PWM1...
  • Page 21 21HS-50H ICs ADDITIONAL INFORMATION:TDA9350(IC801) SYMBOL DESCRIPTION INSSW2 RGB / YUV insertion input R2/VIN R input / V (R-Y) input G2/YIN G input / Y input B2/UIN B input / U (B-Y) input BCLIN beam current limiter input / (V-guard input, note 2)
  • Page 22 21HS-50H ICs ADDITIONAL INFORMATION:TEA1507(IC701) PINNING SYMBOL PIN DESCRIPTION supply voltage ground handbook, halfpage V CC DRAIN CTRL control input input from auxiliary winding for TEA1507 demagnetization timing, OVP and OPP CTRL DRIVER programmable current sense input I sense sense DRIVER...

  • Page 23: Pin Descriptions

    21HS-50H ICs ADDITIONAL INFORMATION:AN7523(IC303) Circuit Function Block Diagram Pin Descriptions Pin No. Description Ch Output (+) Ch Output (-) Standby Ch Input GND (Input) Volume Note: Do not apply voltage or current to NC pin from outside ICs ADDITIONAL INFORMATION:AN5522(IC501)
  • Page 24 21HS-50H ICs ADDITIONAL INFORMATION:MSP34x5G (IC3001) Absolute Maximum Ratings Symbol Parameter Pin Name Min. Max. Unit ° C Ambient Operating Temperature – − 40 ° C Storage Temperature – − 0.3 First Supply Voltage AHVSUP SUP1 − 0.3 Second Supply Voltage...
  • Page 25 21HS-50H ICs ADDITIONAL INFORMATION:MSP34x5G (IC3001) VREF1 DACM_L SC1_OUT_R DACM_R SC1_OUT_L VREF2 AHVSUP 33 32 31 30 29 28 27 26 25 24 23 CAPL_M RESETQ AHVSS I2S_DA_IN2 AGNDC DVSS SC2_IN_L DVSUP SC2_IN_R ADR_CL MSP 34x5G I2S_DA_IN1 SC1_IN_L I2S_DA_OUT SC1_IN_R I2S_WS...

  • Page 26: Schematic Diagram, Wave Forms

    21HS-50H DESCRIPTION OF SCHEMATIC DIAGRAM NOTE: SAFETY NOTE: 1. The unit of resistance «ohm»is omitted (K=1000 1. DISCONNECT THE AC PLUG FROM THE AC ohms. M= Megaohm). OUTLET BEFORE REPLACING PARTS. 2. All resistors are 1/16 watt. unless otherwise noted.
  • Page 27 21HS-50H...
  • Page 28 21HS-50H SCHEMATIC DIAGRAM OF MOTHER UNIT (F7340N4, 01 Version)
  • Page 29 21HS-50H SCHEMATIC DIAGRAM OF MOTHER UNIT (F7340N4, 01 Version)
  • Page 30 21HS-50H SCHEMATIC DIAGRAM OF MOTHER UNIT (F7340N4, 01 Version)
  • Page 31 21HS-50H SCHEMATIC DIAGRAM OF CRT (F7341N0, 00 Version)

  • Page 32: Block Diagram

    21HS-50H CRT UNIT BLOCK DIAGRAM...
  • Page 33 21HS-50H MOTHER UNIT BLOCK DIAGRAM...

  • Page 34: Troubleshooting Tables

    21HS-50H TROUBLESHOOTING TABLES. NO RASTER Check F701. Blown out. Abnormal Normal Replace the fuse. Check R701 Q701. Check T701 pin16 voltage. The fuse is again blown out. and IC701 (Approx. 290V at 220V AC) Check IC701,D701,D702, Normal D703,D704 and C705.
  • Page 35 21HS-50H TROUBLESHOOTING TABLES. NEITHER VERTICAL NOR HORIZONTAL SYNCHRONIZATION CIRCUIT TO BE CHECKED: Sync. Separator Circuit. Check pin33 and 34 of IC801. DEFECTIVE VERTICEL AMP. AND VERTICAL LINEARITY Readjusted vertical size. (Bass Data) Vertical linearity and size is abnormal. Check R502,R505 NO VERTICAL SCAN Check IC501 bias.
  • Page 36 21HS-50H TROUBLESHOOTING TABLES. NO PICTURE, NO SOUND CIRCUITS TO BE CHECKED: Tuner. PIF. Does the noise level increase at max. Automatic Gain Control. Contrast,Brightness and Sound controls? 5V, 32V Power Source. Noise increase but no No snow noise. signal is received.

  • Page 37: Parts Listing

    ZENER DIODE MTZJ5.1BT ROHM S IC 0701 VHITEA1507/-1 IC TEA1507P/N1 PHILIPS D 0755 RH-DX0045BMZZ DIODE 1N4148 IC 0702 RH-FX0008GEZZ P/COUPLER RANK-S SHARP D 0756 RH-EX0615GEZZ ZENER DIODE 5.6V IC 0751 VHITA48M033-1 IC TA48M033F(S) TOSHIBA D 0758 RH-DX0468CEZZ DIODE S3L20U SHINDENGEN...
  • Page 38 21HS-50H REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE C 0531 VCKYCY1HB102K S. CHIP CAP 0.001UF/50V CERAMIC FILTERS C 0532 VCKYCY1HB102K S. CHIP CAP 0.001UF/50V CF 0401 RFILC0023CEZZ SOUND FILTER (TAPED)
  • Page 39 21HS-50H REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE C 1012 VCKYCY1EF104Z S CHIP TAPE CAP 0.1UF/25V R 0455 VRD-RA2EE750J RES 75 OHM 5% 1/4W R 0456 VRD-RA2EE750J RES 75 OHM 5% 1/4W...
  • Page 40 21HS-50H REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE RJ 0008 VRS-CY1JF000J S. CHIP RES. 0-OHM TAPED R 0761 VRD-RA2BE152J RES 1,5KOHM 5% 1/8W RJ 0009 VRS-CY1JF000J S. CHIP RES. 0-OHM TAPED...
  • Page 41 21HS-50H REF No. PARTS DESCRIPTION * SN CODE EX CODE DIODES D 0811 RH-DX0045BMZZ DIODE 1N4148 D 0812 RH-DX0045BMZZ DIODE 1N4148 D 0880 VHD1SS82///1A DIODE 1SS82-A HITACHI D 0881 VHD1SS82///1A DIODE 1SS82-A HITACHI D 0882 VHD1SS82///1A DIODE 1SS82-A HITACHI CAPACITORS...
  • Page 42 21HS-50H DOCUMENTATION OF SOURCES. TDA9350, Philips Data Sheet: µ TDA935X/6X/8X PS/N2 series, TV signal processor-Teletext decoder with embedded -Controller. Tentative Device Specification, 2001 Aug 29, Version: 2.9. TEA1507, Philips Data Sheet: TEA1507 GreenChipII SMPS controlIC. Preliminary specification, 2000Dec05. AN7523, Matsushita Electronics Corporation Specifications: AN7523 Product Specifications.
  • Page 43 21HS-50H NOTES:...
  • Page 44 SHARP ELECTRONICA ESPAÑA S.A. PRINTED BY: TV Division Think Ecology, please use Engineering Dept.

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