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Haier NS-13CTV Service Manual
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Haier NS-13CTV Service Manual

Haier NS-13CTV Service Manual

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SERVICE MANUAL

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NS-13CTV

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Summary of Contents for Haier NS-13CTV

  • Page 1: Service Manual

    SERVICE MANUAL Models: NS-13CTV...

  • Page 2: Table Of Contents

    Edition: 2005-5-6 CONTENTS Safety precautions……………………………………………………………..……………3 TV block diagram……………………………………………………………………..…….4 Replacement of memory IC………………………………………………………….……5 Service adjustment……………………………………………………………..…………...5 ICs functional description…………………………………………………………………8 Test point waveform………………………………………………………………………10 All ICs voltages……………………………..……………………………………………….10 Purity / convergence adjustment………………………………………………………11 DVD maintenance…………………………………………………………………………13 10. List of Parts ………………………………………………………………………….…….14 11. Circuit diagram……………………………………………………………………………28 12. E x p l o d e d vi ew ……… … ……… … ……… … ……… … ………… … ……… … … … 2 9...

  • Page 3: Safety Precautions

    1. SAFETY PRECAUTIONS The design of this product contains special hardware, m any Isolation Check circuits and components especially for safety purposes. For (Safety for Electrical Shock Hazard) continued prot ection, no changes should be made to the After re-assem bling the product, always perform an isolation original design unless...

  • Page 4: Tv Block Diagram

    Block diagram TDA8377 PS/N3/2 series with mono intercarrier sound demodulator...

  • Page 5: Replacement Of Memory Ic

    3. 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. 2. PROCEDURE FOR REPLACING MEMORY IC (1) Power off Switch the power off and unplug the power cord from AC outlet. (2) Replace IC Be sure to use memory IC written with the initial data values.
  • Page 6 Adjustable Items Direct access key Items Description Preset Remark “0” Adjust VG2 voltage “1” 5/6HSH Horizontal shift “2” 5/6VSL Vertical slop 5/6VAM Vertical amplitude 5/6SCL S-correction 5/6VSH Vertical shift 5/6VOF OSD Vertical offset HOF* OSD Horizontal offset “3” Black level offset R Black level offset G White point R White point G...
  • Page 7 XMAX “no signal”osd the horizon rightmost position YMIN “no signal”osd vertical leftmost position YMAX “no signal”osd vertical rightmost position NOTE: THE ITEMS WITH REMARK “A” IS ADJUSTABLE DATA. Optional data Function Description Preset Remark Bit 7 OP_RGB 1=Enable Bit 6 OP_DVD 1=Enable Bit 5...

  • Page 8: Ics Functional Description

    Function Description Preset Remark Bit 7 OP_STORE_AV 1= Enable Bit 6 OP_OSO 1= Enable Bit 5 OP_SOFT_CHANGE 1=Enable Bit 4 OP_FADE 1=Enable Bit 3 OP_ SOUND_M 1= Enable Bit 2 OP_ SOUND_I 1= Enable Bit 1 OP_ SOUND_BG 1=Enable Bit 0 OP_SOUND_DK 1=Enable 6.
  • Page 9 SYMBOL DESCRIPTION STAND BY output. In STAND BY mode, low level (Power OFF). For Power ON this pin will be high. C-bus clock line C-bus data line TUNING tuning Voltage (Vt) PWM output Control keys input SYSTEM TV system control Sound Volume control PWM output MUTE Sound mute output...

  • Page 10: Test Point Waveform

    Note SVHS 2. N902 24C08/PCF8598 Function Upper resistance SDA data wire SCL clock wire +5V Power 3. N601: Sound power amplify (AN7522N) Symbol Function Symbol Function Power supply ground Out 1 (+) Ch 1 output (+) In 2 Ch 2 input GND(out 1) Ch 1Ground Volume Control...

  • Page 11: Purity / Convergence Adjustment

    0.9Vpp 5Vpp 95Vpp 95Vpp 95Vpp CRT KR CRT KG CRT KB TDA8377 PIN33 TDA8377 PIN34 1.3Vpp 0.8Vpp 1Vpp TDA8377 PIN21 TDA8377 PIN22 TDA8377 PIN59 7. IC voltages TDA8377 0.18 0.17 TDA8357 AN 7522N 2.75 0.35 24C08/PCF8598 8. PURITY / CONVERGENCE ADJUSTMENT...
  • Page 12 PURITY ADJUSTMENT WEDGE Demagnetize CRT with the demagnetizer. DEFLECTION YOKE Loosen the retainer screw of the deflection yoke. Remove the wedges. Input a green raster signal from the signal generator, and turn the screen to green raster. Move the deflection yoke backward. P/C MAGNETS Bring the long lug of the purity magnets on the short P: PURITY MAGNET...

  • Page 13: Dvd Maintenance

    STATIC CONVERGENCE ADJUSTMENT 1. Input a crosshatch signal. 2. Using 4-pole convergence magnets overlap the red and blue lines in the center of the screen (Fig. 1) and turn them to magenta (red/blue). (FRONT VIEW) Using 6-pole convergence magnets overlap the magenta (red/blue) and green lines in the center of the screen and turn them to white.

  • Page 14: List Of Parts

    9. DVD Part: Introduction of MTK1389D maintenance NOTE: MTK1389D type LSIC decode .MTK1389D consists RF,SERVO,DSP,DECODE,VIDEO DAC and AUDIO DAC. Under normal power supply conditions, the maintenance plan for MT1389D mono-chip is: first the reset circuit resets the MT1389D, after the crystal oscillator circuit gave the clock signal to MT1389D, MT1389D will start the initialization check for Flash：E PROM：SDRAM, after everything is checked to be normal, it will start initialization check for built-in Audio DAC, servo and motor Driver IC .

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