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Haier 28T9G Service Manual

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COLOUR TELEVISION

SERVICE MANUAL

Features
2
DIGITAL IC
BUS CONTROL
AUTO SEARCH TUNING, 250 PROGRAMS STORED
FULL INFRARED REMOTE CONTROL
MULTI-PICTURE MODES SELECTION
MULTI-FUNCTION TIMER, APPOINTING PROGRAMME
Serial Number: 0010540329
Models
29T9G
Latin America
Version:00.00
COLOR TELEVISION
Edition: 2007-04-23
Model:29T9G

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  • Page 1: Colour Television

    COLOUR TELEVISION SERVICE MANUAL Models 29T9G Latin America Features DIGITAL IC BUS CONTROL AUTO SEARCH TUNING, 250 PROGRAMS STORED FULL INFRARED REMOTE CONTROL MULTI-PICTURE MODES SELECTION MULTI-FUNCTION TIMER, APPOINTING PROGRAMME Serial Number: 0010540329 Version:00.00 Edition: 2007-04-23 COLOR TELEVISION Model:29T9G...
  • Page 2 Product code illumination and series introduction Product code illumination and series introduction T 9G Appearance serial Superflat CRT CRT Catercorner Features ⊙ DIGITAL IC2 BUS CONTROL ⊙ AUTO SEARCH TUNING, 250 PROGRAMS STORED ⊙ FULL INFRARED REMOTE CONTROL ⊙ MULTI-PICTURE MODES SELECTION ⊙...

  • Page 4: Specifications

    Specificatio 3. Specifications FUNCTION FUNCTION TDA9381 NO. of built-in speakers Main IC 4W+4W Audio output power(W) Total power input W NTSC Color system 110-250V Voltage range V Audio system 50HZ Power frequency Hz NO.of channels E/F/A Time of sleep timer(MINS) OSD language 40.5Kg Net weight(KG)

  • Page 5: Safety Precautions

    SAFETY PRECAUTIONS 4.SAFETY PRECAUTIONS INPORTANT SAFETY NOTICE These parts are identified by many electrical and mechanical parts in this chassis have special safety-related characteristics. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.

  • Page 6: Warning And Cautions

    Warning and Cautions 5.Warning and Cautions 1. When you clean the TV set, please pull 4. To prevent the TV set from firing and out the power plug from AC outlet. Don't electric shock, don't clean the cabinet and the screen with make the TV set rain benzene, petrol and other chemicals.
  • Page 7 Warning and Cautions Explanation on the display tube Generally, it is not needed to clean the tube surface. However, if necessary, its surface can be cleaned with a dry cotton cloth after cutting off the power. Don’t use any cleanser. If using hard cloth, the tube surface will be damaged. CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS.
  • Page 8 Warning and Cautions by this service manual might be equipped. 7. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed. 8. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead.
  • Page 9 Warning and Cautions CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise even some normally harmless motions such as mutual brushing of your clothes’...
  • Page 10 Warning and Cautions boards using the familiar round hole, use the standard technique as Outlined . Removal Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.
  • Page 11 Warning and Cautions Securely crimp each connection and solder it. Inspect (on the circuit board copper side) the solder joints of the two “original” leads. If they are not shiny, reheat them and if necessary, apply additional solder. Fuse and Conventional Resistor Removal/Replacement 1.
  • Page 12 Warning and Cautions 2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern. 3. Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side.
  • Page 13 A OUTR A OUTL MAIN L MAIN R SDA/SCL AV2 R AV2 R M OUTR M OUTL AV1 L AV2 L...

  • Page 16: Replacement Of Memory Ic

    Replacement of memory IC 7.REPLACEMENT OF MEMORY IC 1. MEMORY IC. This TV uses memory IC. In the memory IC are memorized data for correctly operating the video and deflection circuits. When replacing memory IC, be sure to use IC written with the initial value of data. 2.

  • Page 17: Bus Control Adjustment

    Service adjustment BUS CONTROL ADJUSTMENT To enter BUS control mode, Press “TEST” key on the Remote control unit of factory. Press “0” to “9“ key, (Mkey) and corresponding on-screen display will be appeared. On TV screen “TEST” will be indicated, this means entered bus control mode. And press following key, each function will be available.
  • Page 18 Service adjustment ICs Default Settings 1． TDA9381(1.0) EK cord=NTDA9381-----NG Items Variable Preset Items Variable Preset ON/OFF SUBCON 0~63 ON/OFF SUBCOL 0~63 FMWS ON/OFF SUBSHP 0~63 ON/OFF SUBTINT 0~15 ON/OFF YDLY PAL 0~15 ON/OFF YDLY NTSC 0~15 WOOFER ON/OFF YDLY SEC 0~15 DUAL OUT YDLY AV...
  • Page 19 Service adjustment 2. TDA9361(1.1) EK cord=NTDA9361-----NF Items Variable Preset Items Variable Preset ON/OFF SUBCON 0~63 ON/OFF SUBCOL 0~63 FMWS ON/OFF SUBSHP 0~63 ON/OFF SUBTINT 0~15 ON/OFF YDLY PAL 0~15 ON/OFF YDLY NTSC 0~15 WOOFER ON/OFF YDLY SEC 0~15 DUAL OUT YDLY AV 0~15 Volume mode...
  • Page 20 3.TDA9384 OR TDA9363 ---2NG UOC C standard UOC for export bus control adjustment item default setting Items Variable Preset ON/OFF ON/OFF FMWS ON/OFF ON/OFF ON/OFF ON/OFF WOOFER ON/OFF DUAL OUT VOLPIN OPEN/DRAIN OPEN-DRAIN BAND* 3(9AVMODE) ，9(SCART MODE) AV CFG* NTSC MX VIDEO OUT CVBS PIN5*...
  • Page 21 SUBCOL SUBSHP SUBTINT YDLY PAL YDLY NTSC YDLY SEC YDLY AV UOC VOL UOCVOL 0~63 TDA9874 GAIN 0~30 CATHODE 4 (14”—21”), 6 (25”), 8 (29”), 10 (34”) SC BRI OSD VPOS OSD HPOS WIDE ZOOM NENU TITLE E2PROM AORESS 0~33 E2PROM VALUE 0~95 E2PROM WRITE...
  • Page 22 EWUCP 0~63 EWLCP 0~63 EWTRAP 0~63 *2. method of LOGO input: horizontal when E2PROM ADRESS = 0, to adjust E2PROM VALUE may be changed position of LOGO. It’s range is from 10 to 20. vertical when E2PROM ADRESS =1, to adjust E2PROM VALUE may be changed position of LOGO.
  • Page 23 > ÷ ’...

  • Page 24: Ics Functional Description

    ICs functional description 9. ICs functional description UOC TDA93XX SYMBOL DESCRIPTION STAND BY output. In STAND BY mode, high level (Power OFF). For Power ON this pin will be reduced to low. C-bus clock line C-bus data line TUNING tuning Voltage (Vt) PWM output P3.0/NTSC SW Port 3.0 or NTSC output/SCART SW input, Forced NTSC selection, Low-level output, otherwise High output.
  • Page 25 ICs functional description ICs functional description AUDEXT/QSSO/ external audio output / QSS intercarrier out AMOUT *1 EHTO EHT/overvoltage protection input PLL IF IF-PLL loop filter IFVO/SVO IF video output / selected CVBS output supply voltage TV processor CVBS INT internal CVBS input GND1 ground for TV processor CVBS/Y...
  • Page 26 ICs functional description TABLE 1 IC version FM-PLL version QSS version East-West 01/10/11 01/10/11 01/10/11 01/10/11 CMB1/CMB0 bits bits Pin 20 Pin 28 AUDEEM SIFIN1 Pin 29 DECSDEM SIFIN2 Pin 31 SNDPLL SIFAGC Pin 32 SNDIF(1) REFO(2) AVL/SNDIF(1) REFO(2) AMOUT REFO(2) AMOUT REFO(2)
  • Page 27 ICs functional description AN7522/7523 Function : audio output Symbol Function Symbol Function Power supply ground Out 1 (+) Ch 1 output (+) In 2 Ch 2 input GND(out 1) Ch 1Ground Volume Control Out 1 (-) Ch 1 output (-) Out 2 (-) Ch 2 output (-) Standby...

  • Page 28: Test Point Waveforms

    Test point waveforms 10. Test point Waveforms 1.2Vpp 2.6Vpp 3.8Vpp 2.5Vpp 2.5Vpp TDA93XX TDA93XX TDA93XX TDA93XX TDA93XX 0.9Vpp 5Vpp 95Vpp 95Vpp 95Vpp TDA93XX TDA93XX CRT KR CRT KG CRT KB 0.8Vpp 1Vpp 2.7Vpp 1000Vpp V451 B V451 C TDA93XX TDA93XX TDA93XX 22Vpp 300Vpp...

  • Page 32: Sincere Forever

    Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...

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