Daewoo DSJ-4720CRU Service Manual
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Daewoo DSJ-4720CRU Service Manual

Daewoo DSJ-4720CRU Service Manual

Rear projection tv
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Service Manual
REAR PROJECTION TV
CHASSIS : SJ-113
MODEL : DSJ-4710CRU/4720CRU
Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center(http://svc.dwe.co.kr)
DAEWOO ELECTRONICS Corp.
http : //svc.dwe.co.kr
S/M No. :DSJ113FEFO
Aug. 2004

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Summary of Contents for Daewoo DSJ-4720CRU

  • Page 1 : In this Manual, some parts can be changed for improving. their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List)in Service Information Center(http://svc.dwe.co.kr) DAEWOO ELECTRONICS Corp. Aug. 2004 http : //svc.dwe.co.kr...

  • Page 2: Table Of Contents

    6) IF Module 7) AV Main 8) Micom Module 9) Control & Union 9. PRINTED CIRCUIT BOARD 1) Main PCB 2) Power PCB 3) Convergence Module 4) IF Module 5) CRT PCB 6) Union PCB 10. EXPLODED VIEW 1) DSJ-4710CRU 2) DSJ-4720CRU...

  • Page 3: Safety Instruction

    1. Safety Instruction 1. When all services are carried out, every item required in this manual needs to be followed and the services should be performed by A/S man. 2. The following general items should be performed before staring the services. 1) Unplug the power.
  • Page 4 8. How to check a leakage current 1) Plug the power directly. 2) After connecting 1.5 ohm 10W resistance and 0.15uF condenser in a row, link one with an exposed metal part of TV set and earth the other (proper earth place such as water pipe). 9.

  • Page 5: Product Specification

    2. Specifications Model DSJ - 4710CRU/4720CRU Band I : CH02 ~ CH04 Band II : CH05 ~ CH12 Receipt Channel Cable Band : S1’ ~ S3’, S1 ~ S20 Hyper Band : S21 ~ S41 Band IV, V : CH21 ~ CH69 Screen Size 119cm(47”) Signal Method...

  • Page 6: Remote Control

    3. Remote Control Power Mute Recall AV1 / AV2 / S-VHS2 / AV3 / AV4(S-VHS4) Program number (0-9) /Component/RF Use to select channel directly 0~9 Sleep Childlock This feature is used to set up the time of automatic turn off. VIRTUAL SOUND DOLBY...

  • Page 7: Adjusting Method

    4. Adjusting Method Adjustment of temporary ITC Step 1. Temporary fixation of DY 1) Insert DY in R, G, B CRT and tighten the screws properly with DY pushed upward to the end (Refer to Figure 1) 2) Adjust the slant and position of DY so that the rectangle projections of DY are shown in front of the set.
  • Page 8 Adjusting Method Completion of control - All adjustments need to be performed after for 1hour or more. - Heat-run is executed in the state of non-signal noise. - If a retrace line appears on the screen during heat-run, rotate the screen VR left and carry out heat-run when it disappears.
  • Page 9 Adjusting Method 4) When the focus control is finished, apply a silicon bond between inside and outside diameter, paying attention so that the lens isn’t moved. 5) Project R, G, B signal only by one signal, using a lens cover and control G, R and B in the order.
  • Page 10 Adjusting Method Step 5. Control of deflection yoke and tilt 1) Receive CROSS-HATCH pattern. 2) Rotating a loose DY left and right, control it so that the horizon of R, G, and B can be projected on to the screen correctly in the form of horizon. (Refer to the center point of Front -Mask) 3)After adjusting the R, G, B, FY, fix the DY with a lever not to turn.
  • Page 11 Adjusting Method Step 8. Control of white balance 1) Connect a control pattern (intra-office signal cable broadcasting 32 CH) with external input 3. 2) Select the screen mode as standard. 3) Locate the sensor of 3298 system at the center of High/Low Beam. 4) Execute the projection program of control PC.
  • Page 12 Adjusting Method Step 9. Control of sub brightness - Press the S9 key to enter the Sub Brightness control mode. - Screen mode: Standard 1) Receive RETMA pattern (intra-office signal cable broadcasting 96 CH) 2) Press the S8 key. 3) Control the Sub Brightness so that 18% gradation can be identified in the contrast chart of gradation pattern.

  • Page 13: Ic Description

    5. IC Description 5.1. Pin Connections and Short Descriptions for VSPB For VSP 941x/4x, the pin connections differ for pins: 1, 2, 3, 75, 76, 77, 78, 79, 80 (see Section 5.1.2. on page 210). 5.1.1. Common Pin Connections and Short Descriptions (VSP94X5B, VSP94X7B)
  • Page 14 IC Description...
  • Page 15 IC Description...
  • Page 16 IC Description...
  • Page 17 IC Description...
  • Page 18 IC Description 5.1.2. Differing Pin Connections and Short Descriptions for VSP 941xB and VSP 944xB...
  • Page 19 IC Description 5.2. Pin Circuits(VSP94X5B, VSP94X7B)
  • Page 20 IC Description 5.3. Application Circuit 5.3.1. Application Example for QFP80 package...
  • Page 21 IC Description 5.4. Pin Description(CXA2150AQ)
  • Page 22 IC Description...
  • Page 23 IC Description...
  • Page 24 IC Description...
  • Page 25 IC Description...
  • Page 26 IC Description...
  • Page 27 IC Description...
  • Page 28 IC Description...
  • Page 29 IC Description...
  • Page 30 IC Description...

  • Page 31: Trouble Shooting

    6. TROUBLE SHOOTING When no sound is heard Check IC601 sound signals. #27, #28 Check IC601 input sound signals. SIF:#67 A/V:#47, #48 Chack Check C604, Check B+ IC601#47, #48 605, D603, IC601 IC101#32, #33 C606, CC612 #38, #39, #40 RC605, RC608 Check Check 601 Check...
  • Page 32 TROUBLE SHOOTING No raster. Check IIC bus communication between main assy and ICM2 Check main Vertical deflection 5Vp-p assy, ICM2 Check ICM2 #40 (H-drive output) 0.7Vp-p 31.5KHz Horizontal deflection Check H drive signal input in Q430 base Check D drive signal in Q422 base 2Vp-p 12Vp-p 6Vp-p...
  • Page 33 TROUBLE SHOOTING When power isn’t supplied If resistance between Q430 collector and Voltage waveform of Q430 collector is base is near, horizontal output TR has shown below. been destroyed.Replace the TR. 1000 50Vp-p High voltage drive Check F401 #8 (HVG B+135V) Check F401 #10 (HVG B+135V) Replace I421 Check R447...
  • Page 34 TROUBLE SHOOTING Vertical deflection Check I301 #4 vertical SAW waveform Check ICM2 22VP-p 50Hz Check I301 #5 voltage waveform Check ICM2 22VP-p 60Hz Check I301 #2 vertical deflection waveform Check vertical B+(+15V, -15V) I301 #6, I301#1 50VP-p 60Hz Check R442,R417, D441, R416, R451, D440...
  • Page 35 TROUBLE SHOOTING When Power isn’t supplied (Stand by power:IS802) Stand by power LED isn’t red. Check IS801 #1 Replace IS801 DC 7~10V Check IS801 #1 Check RS801 is open Check RS801 is open Check DS810 Replace DS810 Check F801 Replace FUSE Check Power Code...
  • Page 36 TROUBLE SHOOTING When Power isn’t supplied Check Stand by LED is red. Stand by circuit Check RS810 Remote Controller Check Remote DC 3.3V Power On Check Controller Circuit Replace QS802 Check QS802 works normally Replace I804 Check I804 is high or check DS815 Check I801 #3 Check QS801, DS807...

  • Page 37: Service Part List

    7. SERVICE PARTS LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK ZZ100 48B5550J13 TRANSMITTER REMOCON R-50J13 (AA) ZZ210 PTEGPWG041 ENGINE AS DSJ-4710CRU ZZ110 PTACPWG041 ACCESSORY AS DSJ-4710CRU M961 485961064R P16LSG03RJA M350 4850Q00610 BATTERY LR6 AA ALKALINE M962 485961064G P16LSG03HKA...
  • Page 38 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C703 CEXF1A471V C ELECTRO 10V RSS 470MF (8X11.5) TP LC183 5CPZ689K02 COIL PEAKING 6.8UH K (AXIAL 3.5MM) C704 CEXF1A471V C ELECTRO 10V RSS 470MF (8X11.5) TP 5CPZ560K02 COIL PEAKING 56UH K (AXIAL 3.5MM)
  • Page 39 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK CC764 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 CCM56 HCBH224KBA C CHIP CERA 25V X7R 0.22MF K 1608 CC765 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 CCM57 HCBH224KBA...
  • Page 40 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RC742 HRFT224JBA R CHIP 1/10 220K OHM J 1608 RCM44 HRFT000JBA R CHIP 1/10 0 OHM J 1608 RC745 HRFT101JBA R CHIP 1/10 100 OHM J 1608 RCM45 HRFT102JBA R CHIP...
  • Page 41 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK P801A 4859235320 CONN WAFER YW025-10 C660 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP P802A 4859235320 CONN WAFER YW025-10 C661 CMXL1J224J C MYLAR 63V MEU 0.22MF J (TP) P803A 4859235520 CONN WAFER...
  • Page 42 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK D605 D1N4148—- DIODE 1N4148 (TAPPING) CCA11 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 D606 D1N4148—- DIODE 1N4148 (TAPPING) CCA12 HCBK103KBA C CHIP CERA 50V X7R 0.01MF K 1608 D607 D1N4148—-...
  • Page 43 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RC119 HRFT752JBA R CHIP 1/10 7.5K OHM J 1608 00001 1STK392—- STK392-020 RC120 HRFT101JBA R CHIP 1/10 100 OHM J 1608 0000A 4957002001 HEAT SINK AL EX RC121 HRFT101JBA...
  • Page 44 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK CF462 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP CA155 CCZB1H101K C CERA 50V B 100PF K (AXIAL) F801A 4857415001 CLIP FUSE PFC5000-0702 CA156 CCZB1H101K C CERA 50V B 100PF K (AXIAL) F801B...
  • Page 45 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RA856 RD-AZ562J- R CARBON FILM 1/6 5.6K OHM J PB907 4857417500 TERM PIN DA-IB0214(D2.3/DY PIN) RA857 RD-AZ562J- R CARBON FILM 1/6 5.6K OHM J PB908 4857417500 TERM PIN DA-IB0214(D2.3/DY PIN)
  • Page 46 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK D928 DRGP15J—- DIODE RGP15J DO-204AC 600V 1.5A R985 RD-AZ303J- R CARBON FILM 1/6 30K OHM J D929 DRGP15J—- DIODE RGP15J DO-204AC 600V 1.5A R986 RD-AZ303J- R CARBON FILM 1/6 30K OHM J D930...
  • Page 47 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C562 CEXF1A471V C ELECTRO 10V RSS 470MF (8X11.5) TP CC563 HCQK100JBA C CHIP CERA 50V CH 10PF J 1608 C563 CEXF1A471V C ELECTRO 10V RSS 470MF (8X11.5) TP CC564 HCBK103KBA C CHIP CERA...
  • Page 48 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RC551 HRFT151FBA R CHIP 1/10 150 OHM F 1608 0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN RC552 HRFT561FBA R CHIP 1/10 560 OHM F 1608 D811 PTH1SW8902 HEAT SINK ASS`Y...
  • Page 49 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK 0000A 4857032000 HEAT SINK AL PR T1 4856310300 EYE LET BSR T0.2 (R1.6) 0000B 7174300811 SCREW TAPPTITE TT2 RND 3X8 MFZN 4856310300 EYE LET BSR T0.2 (R1.6) 0000C 4857619500 INSU PLATE...
  • Page 50 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C463 CEXF1E101V C ELECTRO 25V RSS 100MF (6.3X11) TP R439 RN02B753JS R METAL FILM 2W 75K OHM J SMALL C482 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP R440 RN02B132JS R METAL FILM...
  • Page 51 Service part list PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK DS815 DRU1P——- DIODE RU1P R433 RD-2Z153J- R CARBON FILM 1/2 15K OHM J J325 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING R434 RD-2Z471J- R CARBON FILM 1/2 470 OHM J J326 85801065GY...

  • Page 52: Schematic Diagram

    8. Schematic Diagram 1) Block Diagram -51-...

  • Page 53: Power

    Schematic Diagram 2) Power -52-...

  • Page 54: Convergence Amp

    Schematic Diagram 3) Convergence AMP -53-...

  • Page 55: Convergence Module

    Schematic Diagram 4) Convergence Module -54-...

  • Page 56: Crt Amp

    Schematic Diagram 5) CRT Amp -55-...

  • Page 57: If Module

    Schematic Diagram 6) IF Module -56-...

  • Page 58: Av Main

    Schematic Diagram 7) AV Main -57-...

  • Page 59: Micom Module

    Schematic Diagram 8) Micom Module -58-...

  • Page 60: Control & Union

    Schematic Diagram 9) Control & Union -59-...

  • Page 61: Printed Circuit Board

    9. PRINTED CIRCUIT BOARD 1) Main PCB -60-...

  • Page 62: Power Pcb

    PRINTED CIRCUIT BOARD 2) Power PCB -61-...

  • Page 63: Convergence Module

    PRINTED CIRCUIT BOARD 3) Convergence Module PCB -62-...

  • Page 64: If Module

    PRINTED CIRCUIT BOARD 4) IF Module PCB -63-...

  • Page 65: Crt Pcb

    PRINTED CIRCUIT BOARD 5) CRT PCB -64-...

  • Page 66: Union Pcb

    PRINTED CIRCUIT BOARD 6) UNION PCB -65-...

  • Page 67: Exploded View

    10. EXPLODED VIEW 1) DSJ-4710CRU -66-...

  • Page 68: Dsj-4720Cru

    EXPLODED VIEW 2) DSJ-4720CRU -67-...

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