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MATSUI 28WN04
Service Manual


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  • Contains Circuit Diagrams
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  • PDF Format
  • Complete manual
  • Language: English
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Description of MATSUI 28WN04 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

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Text excerpt from page 1 (click to view)
MATSUI 28WN04
Matrix
Item See Model Book
7 7 7 NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE: No need the setting for after INI 16. Safety Check ................................................................................. Matsui 2107NS Disassembly Instructions .............................................................. Matsui 2107NS Service Mode List .......................................................................... Matsui 2107NS

Memory IC Replacement

5. Press the MENU button on the remote control to end the adjustments.

6. Using the VOL. UP/DOWN button on the remote control, adjust the G.DRV, B.DRV, G.BIAS or B.BIAS. 7. Perform the above adjustments 5 and 6 until the white color is obtained. 2-6: FOCUS 1. Receive the monoscope pattern. 2. Turn the Focus Volume fully counterclockwise once. 3. Adjust the Focus Volume until picture is distinct. 2-7: BRIGHTNESS 1. Receive the black pattern*. (RF Input) 2. Using the remote control, set the brightness and contrast to normal position. 3. Change the wide screen mode to FULL. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (14) on the remote control to select “BRI”. 5. Press the VOL. UP/DOWN button on the remote control until the screen begins to shine. 6. Receive the black pattern*. (Audio Video Input) 7. Press the AV button on the remote control to set to the AV mode. Then perform the

4. Press the VOL. UP/DOWN button on the remote control until the picture size is 470 ± 5mm. 5. Press the CH UP button once to set to “PARABOLA CORR(NORMAL)” mode. 6. Receive the cross hatch pattern. 7. Press the VOL. UP/DOWN button on the remote control until the both ends of the vertical lines are straight. 8. Press the CH UP button once to set to “V.SIZE(NORMAL)” mode. 9. Receive the monochrome pattern. 10.Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on upside and downside becomes 8 ± 2%. 2-15: NORMAL H. BLANKING 1. Receive the monoscope pattern. 2. Using the remote control, set the brightness and contrast to normal position. 3. Change the wide screen mode to NORMAL. 4. Adjust VR651 until the difference of A and B becomes minimum. (Refer to Fig. 2-1)

Recommended Safety Parts
Item
R404 R422 R423 R426 R428 R433 R438 R450 R451 R471 R501 R503 R519 R523 R524 R531 R532 R542 R543 C501 C502 C525 C526 C527 C532 D417 D501 D502 D503 D504 D510 D511 D512 IC401 IC403 IC405 IC501 IC502 IC503 IC504 Q405 Q411 Q506 Q801 Q802 Q803 L503 L505 T501 SW501 CD501 F501 FB401 RY501 V801

Part No.

Description
R3X28B101J R3X18A010J R3X28B152J R3X28B182J R3X18A181J R6558AR39J R5W2CF2R7J R3X18A102J R6558A2R7J R6558AR39J R002T2155J R5X2CF5R6J R3X28B270J R3X28B470J R5X2CD010J R3X28B333J R002T4472J R3X181R27J R635U2681J P2122B224M CB3930MH3M CB3930M12K P2222B224K CB3930M12K CB3930MQ2K D2WTAU02A0 D2WTRM11C0 D2WTRM11C0 D2WTRM11C0 D2WTRM11C0 D28I15DF60 D28T21DQN9 D2WTAU02A0 I55DA8859C I05SD84270 I1KA978120 I2BT06707A I1KA978050 I1KA978090 I1KA978050 TDUF024990 T230002010 0002500560 TC3Q040750 TC3Q040750 TC3Q040750 028R280001 02D5000049 0481400596 0530205002 1206635818 0808T04002 043228003Q 0560Q20114 0981280903

R.METAL MOR3WS101JB/B 100 OHM 3W MOR3WS101JB/B R,METAL OXIDE 1 OHM 2W MOR2W010JB/B R,METAL OXIDE 1.5K OHM 3W MOR3WS152JB/B R,METAL OXIDE 1.8K OHM 3W MOR3WS182JB/B R,METAL MOR2W181JB/B 180 OHM 2W MOR2W181JB/B R,FUSE RNF(L)2RR39J 0.39 OHM 2W RNF(L)2RR39J R,CEMENT RF-10ZYJ2R7 2.7 OHM 10W RF-10ZYJ2R7 R,METAL OXIDE 1K OHM 2W MOR2W102JB/B R,FUSE RNF(L)2R2R7J 2.7 OHM 2W RNF(L)2R2R7J R,FUSE RNF(L)2RR39J 0.39 OHM 2W RNF(L)2RR39J RC 1.5M OHM 1/2W CF33-1/2T155J R,CEMENT PRZA-2 10W 5.6J 5.6 OHM 10W PRZA-2 10W 5.6J R,METAL OXIDE 27 OHM 3W MOR3WS270JB/B R.METAL MOR3WS470JB/B 47 OHM 3W MOR3WS470JB/B R,CEMENT PRZA-2W 5W 1 OHM 5W PRZA-2W 5W 1.0J R,METAL OXIDE 33K OHM 3W MOR3WS333JB/B RC 4.7K OHM 1/4W R,METAL MOR1WR27JB/B 0.27 OHM 1W MOR1WR27JB/B R,FUSE 680 OHM 1/2W RF50SSVTPA681J CMP 0.22 UF 250V ECQUL ECQU2A224ML CC 0.0022UF 250V DE1210-1E222M-KX CC 100 PF 250V DE0910-1B101K-KX CMP 0.22 UF 250V AC MMCA 250MMCA224K UV CC 100 PF 250V DE0910-1B101K-KX CC 470 PF 250V DE0910-1B471K-KX DIODE SILICON AU02A-EIC DOIDE SILICON RM11C-EIC DOIDE SILICON RM11C-EIC DOIDE SILICON RM11C-EIC DOIDE SILICON RM11C-EIC DIODE,SILICON 15DF6-FC DIODE SCHOTTKY 21DQ09N-TA2B1 DIODE SILICON AU02A-EIC IC TA8859CP IC TA8427K IC KIA7812PI IC STR-F6707A IC KIA7805PI IC KIA7809PI IC KIA7805PI TRANSISTOR SILICON 2SD2499 TRANSISTOR,FIELD EFFECT 2SK2010 PHOTO COUPLER TLP621(D4-GR-LF2 TRANSISTOR,SILICON 2SC4075-YAC TRANSISTOR,SILICON 2SC4075-YAC TRANSISTOR,SILICON 2SC4075-YAC COIL,DEGAUSS 8R280001 COIL CHOKE CH15012720 TRANSFORMER,SWITCHING 81400596 SWITCH SDDFC30400 CORD AC 1206635818 FUSE 218004 TRANSFORMER,FLYBACK 3228003Q 3228003Q RELAY SDT-S-112LMR CRT W/DY W66EHK51X36 W66EHK51X36

Table 1 1. The unit will now have the correct DATA for the new MEMORY IC. 2. Set to the STANDBY at the minimum of volume. Press the channel button (6) on the remote control for more than 3 seconds. 3. Press POWER button on the remote control to turn the POWER ON within 2 seconds. ADDRESS and DATA should appear as Fig. 1 (See Matrix). 4. ADDRESS is now selected and should “blink”. Using the VOL. UP/DOWN button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached. 5. Press ENTER to select DATA. When DATA is selected, it will “blink”. 6. Again, step through the DATA using VOL. UP/ DOWN button until required DATA value has been selected. 7. Pressing ENTER will take you back to ADDRESS for further selection if necessary. 8. Repeat steps 4 to 7 until all data has been checked. 9. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input. 2. BASIC ADJUSTMENTS 2-1: CONSTANT VOLTAGE 1. Place the set with Aging Test for more than 15 minutes. 2. Using the remote control, set the brightness and contrast to normal position. 3. Connect the digital voltmeter to TP501. 4. Set condition is AV MODE without signal. 5. Adjust the VR501 until the digital voltmeter is 135 ± 0.5V. 2-2: VCO CENT 1. Activate the adjustment mode display of Fig. 1-1 and press the channel button (03) on the remote control to select “VCO CENT”. 2. Adjust the L201 until the “OK” appears on the screen. 2-3: AGC VOLTAGE 1. Place the set with Aging Test for more than 15 minutes. 2. Receive an 80dB monoscope pattern. 3. Connect the digital voltmeter to pin 5 of CP101. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (02) on the remote control to select “RF.AGC”. 5. Press the VOL. UP/DOWN button on the remote control until the digital voltmeter is 1.95 ± 0.05V. 2-4: CUT OFF 1. Place the set with Aging Test for more than 15 minutes. 2. Activate the adjustment mode display of Fig. 1-1 and press the channel button (01) on the remote control to select “CUT OFF”. 3. Adjust the Screen Volume until a dim raster is obtained. 2-5: WHITE BALANCE NOTE: Adjust after performing CUT OFF adjustments. 1. Place the set with Aging Test for more than 10 minutes. 2. Receive the color bar pattern. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (11) on the remote control to select “R.BIAS”. 4. Using the VOL. UP/DOWN button on the remote control, adjust “R.BIAS”. 5. Press the PROG/PAGE UP/DOWN button on the remote control to select the “G.DRV”, “B.DRV”, “G.BIAS”, or “B.BIAS”.

adjustments 2~5. * The Black Pattern means the whole black raster signal. Select the “RASTER” of the pattern generator, set to the OFF position for each R, G and B. 2-8: HORIZONTAL POSITION 1. Receive the monoscope pattern. 2. Using the remote control, set the brightness and contrast to normal position. 3. Change the wide screen mode to FULL. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (04) on the remote control to select “H.POSI(50)”. 5. Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum. 6. Receive the monoscope pattern of NTSC. (Audio Video Input) 7. Press the AV button on the remote control to set to the AV mode. Then perform the above adjustments 2~5. 2-9: VERTICAL POSITION 1. Receive the monoscope pattern. 2. Using the remote control, set the brightness and contrast to normal position. 3. Change the wide screen mode to FULL. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (44) on the remote control to select “V.POSI”. 5. Press the VOL. UP/DOWN button on the remote control until the horizontal line becomes fit to the notch of the shadow mask. 2-10: CORNER CORR 1. Receive the cross hatch pattern. 2. Using the remote control, set the brightness and contrast to normal position. 3. Change the wide screen mode to FULL. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (42) on the remote control to select “CORNER CORR”. 5. Press the VOL. UP/DOWN button on the remote control until the both ends of the vertical lines are straight. 2-14: NORMAL MODE (H. SIZE, PARABOLA, V. SIZE) 1. Receive the monochrome pattern. 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (35) on the remote control to select “H.SIZE(NORMAL)”. 2-16: CINEMA2 MODE (PARABOLA, V. SIZE) 1. Receive the monochrome pattern. 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (38) on the remote control to select “PARABOLA CORR (CINEMA2)”. 4. Press the VOL. UP/DOWN button on the remote control until the both ends of the vertical lines are straight. 5. Press the CH UP button once to set to “V.SIZE(CINEMA2)” mode. 6. Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on upside and downside becomes 33 ± 2%. 2-17: OSD HORIZONTAL 1. Activate the adjustment mode display of Fig. 1-1. 2. Using the remote control, set the brightness and contrast to normal position. 3. Press the VOL. UP/DOWN button on the remote control until the difference of A and B becomes minimum. (Refer to Fig. 2-2)

Electrical Adjustments
1. BEFORE MAKING ELECTRICAL ADJUSTMENTS Read and perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies. CAUTION • Use an isolation transformer when performing any service on this chassis. • Before removing the anode cap, discharge electricity because it contains high voltage. • When removing a PCB or related component, after unfastening or changing a wire, be sure to put the wire back in its original position. Inferior silicon grease can damage IC’s and transistors. • When replacing IC’s and transistors, use only specified silicon grease (YG6260M). Remove all old silicon before applying new silicon. Prepare the following measurement tools for electrical adjustments. 1. Digital Voltmeter On-Screen Display Adjustment 1. Set to the STANDBY at the minimum of volume. 2. Press the channel button (9) on the remote control for more than 3 seconds. 3. Press POWER button on the remote control to turn the POWER ON within 2 seconds. The Fig. 1-1 screen will appear. 4. Use the PROG/PAGE UP/DOWN button or Channel button (0-9) on the remote control to select the options shown in Fig. 1-2.

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