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Sharp 15JF-25S Service Manual

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ELECTRICAL SPECIFICATION ....................... 3
IMPORTANT SERVICING NOTES .................. 4
CONTROLS & TERMINALS ............................ 5
SERVICE ADJUSTMENTS .............................. 6
CHASSIS LAYOUTS ....................................... 14
LED FLASHING CODES ................................ 15
PRINTED WIRING BOARDS ......................... 15
SHARP CORPORATION
SERVICE MANUAL
PAL B/G SYSTEM COLOUR TELEVISION
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
SCHEMATIC DIAGRAMS ............................. 26
BLOCK DIAGRAMS ...................................... 32
TROUBLESHOOTING TABLES .................... 34
PARTS LISTING ........................................... 37
ACCESSORIES ............................................... 41
SOURCE OF DOCUMENTATION ................ 41
1
SE0015JF25S00
Issued: 25
GA-1E CHASSIS
15JF-25S
This document has been published to
be used for after sales service only.
15JF-25S
th
July 2002
IT

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  • Page 1: Table Of Contents

    15JF-25S SERVICE MANUAL SE0015JF25S00 Issued: 25 July 2002 GA-1E CHASSIS PAL B/G SYSTEM COLOUR TELEVISION 15JF-25S 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: Electrical Specification

    Y=0.300 ± 0.015 Specifications are subject to change without prior notice. MODEL DESTINATION (Operation Manual languages) 15JF-25S: Deutsch, Nederlands, Français. 15JF-25SIT: Italiano. 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.

  • Page 3: Important Servicing Notes

    15JF-25S 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 4: Controls & Terminals

    15JF-25S CONTROLS & TERMINALS Remote Control Infrared Transmitter Window Aim this window at the infrared sensor on your TV set CALL ( )/CHILD LOCK ( ) button SOUND MUTE ( ) button TV/VIDEO Select button POWER/STANDBY ( ) button Single/Double Entry button (...

  • Page 5: Service Adjustments

    15JF-25S SERVICE ADJUSTMENTS •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 1. Turn the receiver on and ensure that it is tuned into a test pattern.
  • Page 6 15JF-25S 2. Change manually the value of those NVM position pointed out in grey shadow from the “Initial” Value to “Default” Value (Page 7) . 3. Adjust the TV set as detailed in the following pages ( Screen, AGC, Geometry and Colour Adjustments).
  • Page 7 15JF-25S 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 8: Screen Adjustment

    15JF-25S • 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. Set this to << BLUE-BACK: 0 >>, i.e. blue background is turned off.
  • Page 9 15JF-25S • 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.
  • Page 10 15JF-25S •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 11: Hotel Mode Functions

    15JF-25S •Hotel Mode Functions The following procedure details how to set up the Hotel Mode Functions. 1. Short Description 1.1. Hotel Mode “HTL”: Main Hotel Mode. It deactivates “Channel Setting” functions. It reduces the Maximum Volume. 1.2. Hotel Mode “HTL-VOL”: Maximum Volume Level Regulation.
  • Page 12 15JF-25S 3.2.4. Set the value according to your necessities by using volume up/down buttons. 3.2.5. Change initial value from “0” (off ) to “1” (on). 3.2.6. Note: If you do not need to set up Hotel Mode “HTL-PRG” get out from Service Mode (To exit the Service Mode press the stand-by button on the remote control or turn the receiver off with the mains switch).

  • Page 13: Chassis Layouts

    15JF-25S CHASSIS LAYOUTS Mother Unit CRT Unit...

  • Page 14: Led Flashing Codes

    15JF-25S LED FLASHING CODES 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 STAND-BY mode and On timer in-active then switch LED off.

  • Page 15: Ics Additional Information

    15JF-25S ICs ADDITIONAL INFORMATION TDA93XX (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) − −...
  • Page 16 15JF-25S TDA93XX (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 17 15JF-25S TDA93XX (IC801) Pinning 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 18 SOUND TRAP +3.3 V TUNERAGC (32) 54 56 61 (20) 29 28 60 55 59 58 57 (32) VISION IF C-BUS DEEMPHASIS ENHANCED 1/10 PAGE ALIGNMENT-FREE TRANSCEIVER IFIN AUDIO SWITCH PLL DEMOD. 80C51 CPU VST PWM-DAC MEMORY (AVL) AGC/AFC I/O PORTS VOLUME CONTROL VIDEO AMP.
  • Page 19 15JF-25S TEA1507 (IC701) Block Diagram Block Diagram 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...
  • Page 20 15JF-25S AN7523 (IC303) Block Diagram Pin Descriptions Pin No. Description Ch Output (+) Ch Output (-) Stand-by Ch Input GND (Input) Volume Note: Do not apply voltage or current to NC pin from outside AN5522 (IC501) Block Diagram Pin Descriptions Pin No.

  • Page 21: Schematic Diagrams

    15JF-25S SCHEMATIC DIAGRAMS Description 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. µ...
  • Page 22 15JF-25S...
  • Page 23 15JF-25S Schematic Diagram of Mother Unit (F7340N6, 00 Version)
  • Page 24 15JF-25S Schematic Diagram of Mother Unit (F7340N6, 00 Version)
  • Page 25 15JF-25S Schematic Diagram of Mother Unit (F7340N6, 00 Version)

  • Page 29: Troubleshooting Tables

    15JF-25S TROUBLESHOOTING TABLES 12 5$67(5 Power LED Flashes (IC1002) TV PROCESSOR (IC801) TUNER (TU201)
  • Page 30 15JF-25S 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 31 15JF-25S 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. Check the tuner supply voltage Does noise or signal appear LB and HB must be approx.

  • Page 32: Parts Listing

    15JF-25S PARTS LISTING REF No. PARTS DESCRIPTION * SN CODE EX CODE REPLACEMENT PARTS Replacement parts which have special safety characteristics are identified in this manual. Electrical components having such features are identified by in the Replacement Parts Listing. The use of a substitute replacement part which does not have the same safety characteristics as the factory recommended is not permitted.
  • Page 33 15JF-25S REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE RESISTORS...
  • Page 34 15JF-25S REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE MISCELLANEOUS PARTS...
  • Page 35 15JF-25S REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE MISCELLANEOUS PARTS MISCELLANEOUS PARTS PWB-B CRT UNIT TRANSISTORS DIODES OWNERS MANUALS CAPACITORS CABINET PARTS RESISTORS...

  • Page 36: Accessories

    15JF-25S 1.2 1.3 *Do not retrieve to remove the Rear Cabinet. ACCESSORIES R/C Battery Cover Batteries R6(x2) Operation Manual Set GCOVHA009WJSA UBATU0013TAZZ 15JF25S: C O L O U R T E L E V I S I O N MODEL 15JF-2...

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