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SERVICE MANUAL
FEATURES
DVD-TV 15" COMBO
AUTO TUNE/250 CHANNES
DVD/VCD/SVCD/CD/CD-R/CD-RW/JPEG/MP3 COMPATIBLE
FORMATO DE VIDEO 4:3PS、4:3LB
DOLBY AC-3 DECODE
PANATAL LOCK
CAUTION
READ
DIAGNOSE TROUBLE CORRECTLY BEFORE
OFFERING SERVICE .
Colour Television
THIS
MANUAL
Haier model:
DTA-1518
Customer model:
TV/DVD-1533FL
CAREFULLY
TO
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Summary of Contents for Haier DTA-1518
- Page 1 CAUTION READ THIS MANUAL CAREFULLY DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE . SERVICE MANUAL Colour Television Haier model: DTA-1518 Customer model: TV/DVD-1533FL FEATURES DVD-TV 15” COMBO AUTO TUNE/250 CHANNES DVD/VCD/SVCD/CD/CD-R/CD-RW/JPEG/MP3 COMPATIBLE FORMATO DE VIDEO 4:3PS、4:3LB DOLBY AC-3 DECODE PANATAL LOCK...
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Page 2: Table Of Contents
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………………………………………………………12 DVD maintenance…………………………………………………………………………13 10 Circuit diagram ……………………………………………………………………………16... - Page 3 1. SAFETY PRECAUTIONS The design of this product contains special hardware, many Isolation Check circuits and components especially for safety purposes. For (Safety for Electrical Shock Hazard) continued protection, no changes should be made to the After re-assembling the product, always perform an isolation original design unless authorized in writing by the check on the exposed metal parts of the cabinet (antenna manufacturer.
- Page 4 Block diagram TDA9351PS/N2 series with mono intercarrier sound demodulator...
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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 Preset Remark “1” 5/6HSH 19/27 HORIZONTAL SHIIFT “1” 5/6PAR 31/31 HORIZONTAL PARALLELOGRA “1” 5/6BOW 35/31 HORIZONTAL BOW（PAL） “1” 5/6EWW 33/34 WIDTH （NTSC） “1” 5/6EWP 19/19 PARABOLA / WIDTH（NTSC） “1” 5/6UCR 33/34 UPPER CORNER PARABOLA（PAL） “1”...
- Page 7 FLRE “4” Volume IFFS Vision IF HDOL Cathode drive level VG2B VG2 Brightness BBRI Soft Brightness WBRI Whirt Brightness WCON WWhirt contrast WCOL Whirt color START DELAY TIME TRIGGER TIME DELAY TIME peak value whirt confine “5” CONO Enactment contrast 0 BRI0 Listen Brightness COL0...
- Page 8 Bit 3 CYRILLIC_SET 1=Enable Bit 4 FARSI_SET 1=Enable Bit 5 ARABIC_SET 1=Enable Bit 6 1=Enable Bit 7 DVB-T 1=Enable 3. OP3 Function Description Preset Remark Bit 0 COLOR-AUTO 1=Enable Bit 1 COLOR-PAL 1=Enable Bit 2 COLOR-NTSC 1=Enable Bit 3 COLOR-N4.43 1=Enable Bit 4 COLOR-SECAM...
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Page 9: Ics Functional Description
Bit 1 PROG_SET_ENABLE 1=Enable Bit 2 1=Enable Bit 3 TV_RC 1=Enable Bit 4 POWER_ALWAYS_ON 1=Enable Bit 5 PAL_PEAK_CENTRE0 1=Enable Bit 6 PAL_PEAK_CENTRRE1 1=Enable Bit 7 TIME 1=Enable 8. OP8 Function Description Preset Remark Bit 0 FARSI 1=Enable Bit 1 ARABIC 1=Enable Bit 2 TURKISH... - Page 10 PH2LF Phase-2 filter PH1LF Phase-1 filter GND3 Ground 3 for TV-processor DECBG Band gap decoupling Automatic volume levelling VDIVERB Vertical drive B output VDIVERA Vertical drive A output IFIN1 IF input 1 IFIN2 IF input 2 IREF Reference current input Vertical sawtooth capacitor RF AGC Tuner AGC output...
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Page 11: Test Point Waveform
+5V Power 3. TV sound AM-demodulator and audio source switch (TDA9830) Symbol Function Symbol Function IFIN sound IF differential input signal EXTIN input signal (from external) to audio switch n.c. not connected SWITCH switch input select control AGC capacitor supply voltage +12 V (alternative) REF voltage filtering capacitor MUTE mute control... -
Page 12: Purity / Convergence Adjustment
0.18 0.17 TDA4863AJ 10.5 13.1 0.22 TDA9830 1.75 2.32 4.37 1.75 24C08B/PCF0539 8. PURITY / CONVERGENCE ADJUSTMENT... - Page 13 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 14 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) 3. 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 15 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 .
- Page 16 PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn...
- Page 18 Sincere Forever Haier Group Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China http://www.haier.com...