Vivax TV-2104 Service Manual
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Vivax TV-2104 Service Manual

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COLOR TELEVISION
SERVICE MANUAL
MODEL NO.
TV-2104 TV-2105 TV-2174
CHASSIS NO. ETE-2
Please read this manual carefully before service.

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Summary of Contents for Vivax TV-2104

  • Page 1 COLOR TELEVISION SERVICE MANUAL MODEL NO. TV-2104 TV-2105 TV-2174 CHASSIS NO. ETE-2 Please read this manual carefully before service.

  • Page 2: Table Of Contents

    T A B L E O F C O N T E N T S SAFETY INSTRUCTIONS AND MAINTENANCE ......X-RAY RADIATION PRECAUTION ................…..1 SAFETY PRECAUTION ..................…..1 PRODUCT SAFETY NOTICE .................. …..2 SAFETY SYMBOL DESCRIPTION ................. …..3 MAINTENANCE .......................

  • Page 3: Safety Instructions And Maintenance

    SERVICE MANUAL SAFETY INSTRUCTIONS AND MAINTENANCE “ WARNING: BEFORE SERVICING THIS CHASSIS, READ THE X-RAY RADIATION ” “ ” “ ” PRECAUTION SAFETY PRECAUTION PRODUCT SAFETY NOTICE INSTRUCTION BELOW. X-RAY RADIATION PRECAUTION 1. The EHT must be checked every time the TV is serviced to ensure that the CRT does not emit X-ray radiation as result of excessive EHT voltage.

  • Page 4: Product Safety Notice

    SERVICE MANUAL 4. When replacing ICs, use specific tools or a static-proof electric iron with small power (below 35W). 5. Do not use a magnetized screwdriver when tightening or loosing the deflection yoke assembly to avoid electronic gun magnetized and decrement in convergence of the CRT. 6.

  • Page 5: Safety Symbol Description

    SERVICE MANUAL SAFETY SYMBOL DESCRIPTION The lightning symbol in the triangle tells you that the voltage inside this product may be strong nough to cause an electric shock. Extreme caution should be exercised when working on the TV with the back removed. This is an international hazard symbol, telling you that the components identified by the symbol have special safety-related characteristics.

  • Page 6: Adjustments

    SERVICE MANUAL ADJUSTMENTS SET-UP ADJUSTMENTS The following adjustments should be made when a complete realignment is required or a new picture tube is installed. Perform the adjustments in the following order: 1. Color purity 2. Convergence 3. White balance Notes: ①...
  • Page 7 SERVICE MANUAL Fig. 1 2. Convergence Adjustment Preparation: Before attempting any convergence adjustment, the TV should be operated for at least 15 minutes. 2.1 Center convergence adjustment 2.1.1 Receive dot pattern. 2.1.2 Adjust the brightness/contrast controls to obtain a sharp picture. 2.1.3 Adjust two tabs of the 4-pole magnet to change the angle between them and red and blue vertical lines are superimposed each other on the center of the screen.
  • Page 8 SERVICE MANUAL deflection yoke assembly on the picture tube. Detach the temporarily mounted wedge and put it in either upper space. Fasten the deflection 2.2.6 yoke assembly on the picture tube. After fastening the three wedges, recheck overall convergence and ensure to get optimal 2.2.7 convergence.

  • Page 9: Circuit Adjustments

    SERVICE MANUAL CIRCUIT ADJUSTMENTS Preparation: Circuit adjustments should be made only after completion of set-up adjustments. Circuit adjustments can be performed using the adjustable components inside the TV set. For TVs with I C bus control, first change the bus data. 1.
  • Page 10 3. High Voltage Inspection Measure voltages of test points on the main PCB with the digital voltmeter. Measure the CRT high voltage with the high-voltage testing equipment and heater voltage with the high-frequency effective voltmeter. The rated values are shown as below. Table 2 Test Point Voltage (V)
  • Page 11 SERVICE MANUAL degaussing coil to be over 20M . 6. SERVICE mode 6.1 To enter the DESIGN/SERVICE mode Set the volume to 0. Then press and hold the MUTE button on the remote control, and press the MENU button on the TV to enter the SERVICE mode. To exit from the S mode, turn off the TV set by the POWER button on the remote control.
  • Page 12 SERVICE MANUAL DWPR DVD WHITE POINT R DWPG DVD WHITE POINT G DWPB DVD WHITE POINT B YDFP/YDFN/ LUMINANCE DELAY TIME YDFS/YDAV adjustable AGC TAKE OVER Volume control VOLA Dummy AVL level CORE Core noise reduction HLOG the horizontal position LOGO VLG1 The first line vertical position of LOGO VLG2...
  • Page 13 SERVICE MANUAL OP_NOT_2 OP_NOT_3 OP_USER_LOGO USER’S LOGO SETUP OP_ON_BLACK 1：blue back，0：black back OP_FSL OP_ENGLISH 1: ENGLISH OSD,0:NO ENGLISH OSD OP_CZECH 1: CZECH OSD,0:NO CZECH OSD OP_SLOVAK 1: SLOVAK OSD,0:NO SLOVAK OSD OP_RUSSIAN 1: RUSSIAN OSD,0:NO RUSSIAN OSD OP_FRENCH 1: FRENCH OSD,0:NO FRENCH OSD OP_GERMAN 1: GERMAN OSD,0:NO GERMAN OSD OP_ITALY...
  • Page 14 SERVICE MANUAL OP_SIF OP_EXT_SIF0 OP_EXT_SIF1 OP-TUNER 0：TAF5-E4I22 1：TAF5-C4I21 OP_TINT TINT adjustable OP_FMWS WINDOW OF SOUND PLL:+/-200KHZ OP_FMWS1 WINDOW OF SOUND PLL:+/-600KHZ OP_OSVE Overscan vertical, 1:yes,0：no OP_FFI OP_SPEED1 Program quickly, 1:yes,0：no OP_SPEED0 Program slowly, 1:yes,0：no Notes: The data sheet may differ dependent on different models. The data sheet may differ dependent on different CRTs for the same model.

  • Page 15: Structure And Chassis Function Description

    SERVICE MANUAL STRUCTURE AND CHISSIS FUNCTION DESCRIPTION 1 . S T R U C T U E B L O C K D I A G R A M Fig.4 Structure Block Diagram for ETE-2 Chassis Series...

  • Page 16: Chassis Description

    SERVICE MANUAL 2. CHASSIS DESCRIPTION General Description ETE-2 chassis is applied in PF21GB300 series. By use of philips UOC for TV small signal processing and bus control, the chassis enables TV tuning, adjustment, control and picture correction, featuring high-integration, high-performance-to-price ratio and high-reliability and compact circuit with fewer external components.

  • Page 17: Service Data

    SERVICE MANUAL SERVICE DAT 1.TV signal processor TDA935X/6X/8X PS-N3 series 1.1 GENERAL DESCRIPTION The various versions of the TDA935X/6X/8X/9X PS-N3 series combine the functions of a video processor together with a -Controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1 or 10 page text.
  • Page 18 Philips Semiconductors Tentative Device Specification ·Horizontal and vertical geometry processing ·Horizontal and vertical zoom function for 1 6 : 9 applications ·Horizontal parallelogram and bow correction for large screen picture tubes ·Low-power start-up of the horizontal drive circuit ·Macrovision keying possibility for horizontal synchronisation. Available in TDA935X/6X/8X PS versions ·A choice can be made between versions with mono intercarrier sound FM demodulator and versions with QSS IF amplifier.
  • Page 19 Philips Semiconductors Tentative Device Specification Data Capture ·Text memory for 1 or 10 pages ·In the 10 page versions inventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT) ·Data Capture for US Closed Caption ·Data Capture for 525/625 line WST, VPS (PDC system A) and Wide Screen Signalling (WSS) bit decoding ·Automatic selection between 525 WST/625 WST ·Automatic selection between 625 WST/VPS on line 16 of VBI...
  • Page 20 Philips Semiconductors Tentative Device Specification QUICK REFERENCE DATA Table 6 SYMBOL PARAMETER MIN. TYP. MAX. UNIT Supply supply voltages 8.0/3.3 supply current (V = 8 V) supply current (V = 3.3 V) Input voltages video IF amplifier sensitivity (RMS value) iVIFrms) QSS sound IF amplifier sensitivity (RMS value) d B V...
  • Page 21 SERVICE MANUAL BLOCK DIAGRAM Fig.5 PINNING Table 7 SYMBOL DESCRIPTION P3.1/ADC1/PWM1 port 3.1 or ADC1 input or PWM1 output P3.2/ADC2/PWM2 port 3.2 or ADC2 input or PWM2 output P3.3/ADC3/PWM3 port 3.3 or ADC3 input or PWM3 output VSSC/P digital ground for -Controller core and periphery...
  • Page 22 SERVICE MANUAL P0.5 port 0.5 (8 mA current sinking capability for direct drive of LEDs) P0.6/CVBSTD port 0.6 (8 mA current sinking capability for direct drive of LEDs) Composite video input. A positive-going 1V(peak-to-peak) input is required VSSA digital ground of TV-processor SECPLL SECAM PLL decoupling supply voltage TV-processor (+8V)
  • Page 23 SERVICE MANUAL 2. TFA9842AJ 2-channel audio amplifier with volume control (SE: 1 W to 7.5 W) General description The TFA9842AJ contains two identical audio power amplifiers. The TFA9842AJ can be used as two Single-Ended (SE) channels with a volume control. The maximum gain is 26 dB. The TFA9842AJ comes in a 9-pin DIL-bent-SIL (DBS9P) power package.
  • Page 24 SERVICE MANUAL 2.3 Block diagram of TFA9842AJ Fig. 6 Pinning Fig.7...
  • Page 25 SERVICE MANUAL 2.5 Pin description Table 8...
  • Page 26 SERVICE MANUAL 3. VERTICAL SCAN OUTPUT STAGE CIRCUIT TDA4863AJ/TDA4864AJ 3.1 FEATURES TDA4863AJ:Output current up to 3 A (p-p) TDA4864AJ: Output current up to 2.5A (p-p) 3.2 GENERAL DESCRIPTION The TDA4863AJ and TDA4864AJ are deflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz.
  • Page 27 SERVICE MANUAL 4. EEPROM AT24CXX 4.1 Features Low-voltage and Standard-voltage Operation -2.7 (Vcc=2.7V to 5.5V) -1.8 (Vcc=1 .8V to 5.5V) Internally Organized 128x8(1 K), 256x8 (2K), 51 2x8 (4K), 1024x8 (8K) or 2048x8 (16K) 2-wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bi-directional Data Transfer Protocol 100kHz (1 .8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility Write Protect Pin for Hardware Data Protection...
  • Page 28 SERVICE MANUAL 4.3 Pin Configuration Table 11 8 - l e a d M A P Pin Name Function A0-A2 Address Inputs Serial Data Serial Clock Input Write Protect No Connect B o t t o m V i e w Fig.8 Fig.9 4.4 Pin Description...
  • Page 29 SERVICE MANUAL protection. The Write Protect pin allows normal read/write operations when connected to ground (GND). When the Write Protect pin is connected to Vcc, the write protection feature is enabled and operates as shown in table 12. Table 12 Part of the Array Protected WP Pin Status...
  • Page 30 SERVICE MANUAL 5. SWITCH-MODE POWER SUPPLY IC STRG5653/G8656 5.1 General Description The STRG5653/G8656 are part of the STRG5600/G8600 series thick-film ICs for switch-mode power supply incorporating power MOSFET with a high-precise error amplifier. The ICs feature fewer external components, small-size and standard power supply. The series STR-G8600 use Chip on Chip technology with the same operation principle as STR-G5600.

This manual is also suitable for:

Tv-2105Tv-2174

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