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Memorex MT2025D Support Question

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Question posted by josebalbu7 on August 17th, 2018

Memorex Mt2025d

41/5000 1. what is the vertical ic is that it uses -

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Related Memorex MT2025D Manual Pages

Service Manual - Page 1

CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE . com. cn f i nepr i nt . SERVICE MANUAL Colour Television Haier model: 21F7A Customer model: MT2025D l FEATURES l DVD-TV 21" COMBO l AUTO TUNE/181 CHANNES l DVD/VCD/SVCD/CD/CD-R/CD-RW/JPEG/MP3 COMPATIBLE l FORMATO DE VIDEO 4:3PS、4:3LB l DOLBY AC-3 DECODE...

Service Manual - Page 2

TV block diagram 4 3. Replacement of memory IC 5 4. DVD maintenance 13 2 PDF pdf Fact or y Pr o www. cn Service adjustment 5 5. f i nepr i nt . com. All ICs voltages 10 8. CONTENTS 1. Test point waveform 10 7. . Safety precautions 3 2. ICs functional description 8 6. Purity / convergence adjustment 11 9.

Service Manual - Page 3

... voltage across the resistor with it forcefully. Use a high voltage meter or a high voltage probe with a soft dry cloth. Should the TV screen become soiled, wipe it . (1).... 8. Discharge the picture tube before attempting meter connection, by the manufacturer. Always use a line isolation transformer during this product contains special hardware, many circuits and components ...

Service Manual - Page 5

...the linearity of Table below. e) Adjust H PHASE, to get 92% of corresponding factory menus. This TV uses memory IC. Press [Program+] / [Program-] to select items and press [VOLUME+] / [VOLUME-] key, to ... key to CRT vertical centre. 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 remote controller ...

Service Manual - Page 6

... flashing characters to noise reduce gradually and just disappeared point. Adjust RC, GC, BC,RD,BD items to 32. 2. Error Detection Process 1. CRT cut off and white balance adjustment a) CRT cut off adjustment 1. No light and sound Normal Check to see if Fuse is normal Abnormal Check D901~D904, C914, IC9601, Q901...

Service Manual - Page 10

... TRAPEXIUM H SIZE CORNER 注： 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 0 ~ 63 Preset 14 20 2 29 32 32 32 32 40 Remark ★ ★ ★ Description Horizontal shift Vertical amplitude Vertical shift Vertical slop S emendation S-correction Echclon distortion correction Horizontal amplitude TOP Vertical distortion correction P2： Items RC 0 ~ 255 GC 0 ~ 255 BC 0 ~255 RD...

Service Manual - Page 11

... = Y；OFF = N Portugal OSD ON = Y；OFF = N DVD signal format，0:CVBS；1:YC；2:YUV；3：hold Power off DVD off delay time Tv to DVD black screen time P7： Items ON DLY T 0 ~ 15 AVS MUTE TIM 0 ~ 255 LOGO COLOR 0 ~ 7 LOGO 0 ~ 1 INT AUDIO 0 ~ 1 BTSC 0~1 FAC SW 0 ~ 1 POW MD...

Service Manual - Page 12

...(5.0) EXT 1 IN/YIN YC/YIN Y CbCr 5.7V REG OUT VIF VIDEO OUT VIF GND PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 SP00/14bPWM SP01/PWM SP02/PWM SP03/PWM TEST0 P04.../C IN YC CHROMA VCC(5.0) EXT 1 IN/YIN YC/YIN Y CbCr 5.7V POWER OUT VIF VIDEO OUT GND 7 DESCRIPTION PDF pdf Fact or y Pr o www. cn ICs functional description 1.

Service Manual - Page 14

IC401: Vertical output (STV9302A() Symbol PIN Function INPUT 1 SUPPLY VOLTAGE 2 Flyback generator 3...2Vpp 3.8Vpp 2.5Vpp 2.5Vpp H R2J10165GC 95Vpp H R2J10165GC 95Vpp H R2J10165GC 95Vpp H R2J10165GC 0.9Vpp H R2J10165GC 5Vpp H CRT KR 1Vpp V R2J10165GC H CRT KG 0.8Vpp V R2J10165GC H CRT KB 1.3Vpp R2J10165GC H R2J10165GC H R2J10165GC 9 PDF pdf Fact or y Pr o www. f i nepr i nt ....

Service Manual - Page 15

f i nepr i nt . IC voltages R2J10165G PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 V 0 0.02 4.9 0.03 0 4.72 0.04 0.15 2.05 8.04 2.99 2.36 3.2 5 0.83 0.93 PIN 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 V 0 2.04 1.15 1.15 2.97 ...3.2 0 3.76 3.91 5.59 2.28 8.73 3.29 1.97 5 2.73 PIN 33 34 35 36 37 38 39 40 41 42 43 44 45 ...

Service Manual - Page 16

... that the GREEN RASTER will not move. 10. Insert the wedge to green raster. 5. WEDGE DEFLECTION YOKE P CRT 4 6 P/C MAGNETS P: PURITY MAGNET 4: 4-POLES (convergence magnets) 6: 6-POLES (convergence magnets) Fig. 1 ... (Fig. 3) 8. Move the deflection yoke backward. 6. Demagnetize CRT with the demagnetizer. 2. Bring the long lug of the deflection yoke. 3. PURITY ADJUSTMENT 1. Input a crosshatch signal...

Service Manual - Page 17

...and 3 above , and make the best convergence. (FRONT VIEW) Fig. 1 DYNAMIC CONVERGENCE ADJUSTMENT 1. Using 4-pole convergence magnets overlap the red and blue lines in the center of the screen (Fig. 1) ...RED GREEN BLUE Fig. 3 BLUE GREEN RED 12 PDF pdf Fact or y Pr o www. cn Using 6-pole convergence magnets overlap the magenta (red/blue) and green lines in the periphery. (Fig. ...

Service Manual - Page 18

...supply for FLASH are normal signals at A16~A19 of MT1389D or the communication between MT1389D and motor Driver IC SA5668. 2) Not output from Motor Driver, the reason may be: 1） Built in normal operation, ...and external surrounding circuits, it there is output, then it is in CD format built-in MTK1389D IC.you need to see if there is CD format or DVD format disc. if it might the...