28JW-76E SERVICE MANUAL SE0028JW76E00 Issued : 7 Oct. 2002 GA-200 CHASSIS / SECAM SYSTEM COLOUR TELEVISION B/G, I L/L’, B/G, D/K MODEL 28JW-76E ES/C In the interests of user safety (required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identi- cal to those specified should be used.
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28JW-76E 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.
Set brightness control to get total picture tube cathode current of 600 µA under no signal condition. Maximum necessary correction of each picture tube cathode current to get 8550 degrees K+1 MPCD(28JW-76E/EES) or 7250 degrees K-11 MPCD(28JW76EC) screen temperature should not exceed 15% of its original value.
28JW-76E 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.
28JW-76E CONTROLS & TERMINALS HOW TO OPEN THE DOOR Press the top of the door, opening it slightly hook your finger inside and pull open. Front TV 1. Main power button 2. Power indicator 3. Remote Control sensor 4. Volume Down button 5.
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28JW-76E REMOTE CONTROL 1. Stand-by button (TV) Video 2. Power button (VCR) 3. 0 ~ 9 digit buttons 4. Flash back button Teletext 5. GREEN button 6. RED button 7. Volume DOWN button 8. MENU button Teletext 9. REVEAL button 10.
28JW-76E ADJUSTMENT PROCEDURES All adjustments to this chassis, except for focus, are carried out in the Service Mode. • • • • • SERVICE MODE The Service Mode is provided to enable the engineer to correctly set up the receiver to the CRT fitted in the set.
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28JW-76E The following geometry adjustments can be carried out. Detailed instructions on how to execute these are given on the following pages: Horizontal Vertical • Horizontal shift • Vertical size • Horizontal size • Vertical S-correction • Pin phase • Vertical shift •...
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28JW-76E • When the volume down button is pressed, side pincushion changes from barrel shape to pincushion. • Press the stand-by button on the remote control to store. Upper corner correction Adjust the Upper Corner Correction so that the picture is centred.
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28JW-76E Vertical bow Adjust the Vertical bow so that the picture is centred. The effect of this adjustment is shown in figure 12. • When the volume up button is pressed, the vertical bow changes to left. • When the volume down button is pressed, the vertical bow changes to right.
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28JW-76E Colour Adjustments The following adjustments should only be carried out when the CRT or IC850, IC851 and IC852 are replaced. Follow the procedure below to set the Cut Off. Do not change the Cut RED value (50%). 1. Adjust G2.
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6. If another NVM value has to be changed, use the channel down button to select the page or position and repeat as necessary. Note: Do not change any NVM data, unless you have been advised to do so by a Sharp representative. If data is incorrectly changed, serious damage may occur to the receiver.
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28JW-76E Flag NVM write ON/OFF To use this function to rewrite the NVM. It is only necessary when the software of Flash memory (IC6003) change . 1. Enter the Service Mode. 2. Press the Sound mode button(29) of Remote Control. “FLAG NVM WRITE ON” is activated.
28JW-76E LED FLASHING CODES This model is not provided with stereo led, so to let “flashing codes” for IC failures detection when the TV set does not work, we offer the next solution: • The detection of failure will be made with an external LED.
28JW-76E 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 1/8 watt. unless otherwise noted.
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28JW-76E Red Output Green Output Blue Output Video Output +12V E-W Output V Switch V Control St-By Vertical Input E-W Control 2 Inner Correction VH (1.2kV) Vertical+Input H Control...
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28JW-76E Vc (Horizontal) Vb (Horizontal) Headphone L Input Headphone R Input Speaker L Input Speaker L Output Speaker R Output Speaker R Input E-W Control 1 V Flyback Vertical Vertical Output Vertical - Input H Protection IF Video Output V Protection...
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28JW-76E R/C Pulses +400V (Power Supply Voltage) H Flyback Pulse Power Supply Switch Voltage 1 I Sense CRT Power Supply Switch Voltage 2 IF Video In Analog Y Out Analog U Out Analog V Out OSD Blanking M2 Data D3...
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28JW-76E SCHEMATIC DIAGRAM OF MOTHER BOARD UNIT (F7351N1A) SC2OUTR SC2INR SC2OUTL SC2INL SSC-CLOCK B IN G IN R IN SC1OUTR SC1INR SC1OUTL SC1INL SSC-CLOCK SSC-DATA SC1OUTR SC3INR SC1OUTL SC3INL...
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28JW-76E Schematic Diagram of CRT Unit (F7269N3)
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28JW-76E Schematic Diagram of Switch A/V Unit (FB515N0)
28JW-76E TROUBLESHOOTING TABLES ± *Although the checking of these parts could be right, they may be partially damaged. So if the problem remains proceed to replace all parts. Test Point...
28JW-76E ICs ADDITIONAL INFORMATION TDA9886TS (IC201) Features FEATURES • 5 V supply voltage • Gain controlled wide-band Vision Intermediate Frequency (VIF) amplifier, AC-coupled • Multistandard true synchronous demodulation with active carrier regeneration: very linear demodulation, • SIF-AGC for gain controlled SIF amplifier, single...
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28JW-76E TDA9886TS (IC201) Block Diagram handbook, full pagewidth...
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28JW-76E TDA9886TS (IC201) Pinning SYMBOL DESCRIPTION TDA9886T TDA9885T TDA9885HN TDA9886TS TDA9885TS VIF1 VIF differential input 1 VIF2 VIF differential input 2 − − n.c. not connected output port 1; open-collector FMPLL FM-PLL for loop filter DEEM de-emphasis output for capacitor...
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28JW-76E TDA7480L (IC501) 10W OUTPUT POWER: = 8Ω/4Ω; THD = 10% HIGH EFFICIENCY NO HEATSINK SPLIT SUPPLY OVERVOLTAGE PROTECTION ST-BY AND MUTE FEATURES SHORT CIRCUIT PROTECTION PDIP20 (14+3+3) THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA7480L is an audio class-D amplifier as-...
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28JW-76E TDA6111 (IC850, IC851, IC852) Block Diagram supply voltage feedback input HIGH output handbook, full pagewidth MIRROR MIRROR FOLLOWERS cathode transient V bias output C par cathode inverting DC output input DIFFERENTIAL TDA6111Q STAGE non-inverting black current input measurement output...
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28JW-76E SDA9380 (IC6006) Pin Description Pin No. Name Type Description CLKI I/TTL Input for external line locked clock *) Reference oscillator output, Crystal Reference oscillator input, Crystal CLEXT I/TTL Switching between internal (L) and external clock (H) *) TEST I/TTL...
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28JW-76E SDA9380 (IC6006) Pin Description Pin No. Name Type Description VREFH Reference voltage VBLO Q/TTL Vertical blanking output VREFN Ground for VREFH VREFC Reference current input Dark current input for cut off and white level control VDD(A4) Analog supply Y/R 0...
28JW-76E PARTS LISTING REF No. PARTS DESCRIPTION * SN CODE EX CODE Q 0602 RH-TX0236BMZZ TRT 2SK2843 TOSHIBA REPLACEMENT PARTS Q 0603 RH-TX0232BMZZ TRT BC847B SMD PHILIPS Replacement parts which have special safety characteristics are identified in Q 0604 RH-TX0232BMZZ TRT BC847B SMD PHILIPS this manual.
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE D 0508 RH-DX0045BMZZ DIODE 1N4148 D 0753 RH-DX0643BMZZ DIODE SF26 ACPA D 0510 RH-DX0631BMZZ DIODE 1N4935 G.SEMICONDUCTOR D 0798 RH-DX0621BMZZ DIODE BYV27/100 VISHAY...
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE C 0307 VCKYCY1EF104Z S CHIP TAPE CAP 0.1UF/25V C 0394 VCKYCY1HB102K S. CHIP CAP 0.001UF/50V C 0308 VCEA0A1HW335M ELEC C 3,3UF 20% 50V...
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE C 0714 VRS-CY1JF681J S. CHIP RES. 680-OHM TAPED R 0223 VRD-RA2HD100J RES 10 OHM 5% 1/2W C 0715 VCKYCY1HF683Z GRM39F 683Z 50 (1608)SMD CAPACITOR...
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE R 0421 VRS-CY1JF820J RES 0603 82 OHM 5% 1/10W SMD R 0641 VRS-CY1JF272J S. CHIP RES. 2.7K-OHM TAPED R 0422 VRS-CY1JF221J S.
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE R 0758 RR-XZ0123BMZZ FUS RES 82R TAP 5% 1/3W (SS) QPLGN0341CEZZ PLUG R 0759 VRS-VV3DB100J MET OX RES 10 OHM 5% 2W...
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE R 0883 VRS-VV3DB683J MET OX RES 68KOHM 5% 2W DIODES R 0884 VRS-VV3DB683J MET OX RES 68KOHM 5% 2W D 0851...
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE D 6001 RH-DX0606BMZZ DIODE BAS85 PHILIPS SMD C 6041 VCEA0A1HW106M ELEC C 10UF 20% 50V D 6003 RH-DX0606BMZZ DIODE BAS85 PHILIPS SMD...
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE R 6001 VRS-CY1JF221J S. CHIP RES. 220-OHM TAPED R 6108 VRS-CY1JF000J S. CHIP RES. 0-OHM TAPED R 6002 VRS-CY1JF220J RES 0603 22 OHM 5% 1/10W SMD...
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28JW-76E REF No. PARTS DESCRIPTION * SN CODE EX CODE REF No. PARTS DESCRIPTION * SN CODE EX CODE C 6337 VCKZPA1HF103Z CERAM C 10NF % 50V (SVM) QCNW-2757BMZZ WIRE (KC) 2 VIAS C 6428 VCKZPA1HB102K CERAM C 1NF 10% 50V...
28JW-76E SERVICING NOTES 1. Procedure to reprogram the flash memory (IC6003) contained in the digital module Equipment needed • A PC running MS Windows (Win 95/98, Windows 2000 or Windows XP). • A copy of the software “Tiny M2Flash” version 1.06 or higher.
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28JW-76E contained in an “.hex” file. This file must conform to the Intel HEX-32 format. The software does check whether the program operation has been successful or not. 1 Installation of “Tiny M2Flash”: 1.1 Place the “.obj” file in “C:\”.
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28JW-76E 2. GA-200 (M2) FLASH Memory Writer This Kit is available under request in EPC. Kit code: CKIT-0001WJV0. 220V./240V. AC 50Hz. PC COM_...
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28JW-76E 3. Packing of the Set & Accessories Pack-ad SPAKX4077BMZZ Wrapper SPAKP2006BMZZ FRONT SPAKC5495BMZZ Carton Box Batteries UBATU0013TAZZ R/C Battery Cover GCOVHA010WJSA Remote Control RRMCG1073BMSA...
28JW-76E SOURCE OF DOCUMENTATION 1. TDA 9886, Philips Data Sheet: TDA9885; TDA9886. I C-bus controlled single and multistandard alignment-fee IF-PLL demodulators. Product specification. 2002 Mar 05. http://www.semiconductors.philips.com/acrobat/datasheets/TDA9885_TDA9886_1.pdf 2. MSP3411G, Micronas Data Sheet: Preliminary data sheet: “MSP 34x1G Multistandard Sound Processor Family with Virtual Dolby Surround”...
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