Service Manual
Contents
1. MT1389D v2 7 80P1200 12008 1240 cra sv y a moose Xi de I an l LN RS 232 2 voe DG ELECTRONICS 4 SDRAM amp FLASH amp EEPROM DAS 21 MA1 gt gt MA2 a 24 4 27 MAS 28 291 30 3 MAG 32 MAIO 20 DpBAO 19 SDCLK 35 SDCKE 34 18 DRAS 1 DCAS 18 DWE 15 DQNO 14 DOMI 38 vss vss ESMT M12L16161A7 BAVAI2 Es BAS CAS DaML DOMH NC vss vss vss ESMT M12L64164AN C TSOPS4 SDCLK 35 SDCKE 34 DBAi 18 DRAS 17 DCAS 18 DWE 15 DOMI 36 5033 CB39 _ cB402. 15 303 BESODIBIES GU ees 15 6 Service Tools and 16 6 1 Service Tools and a 16 6 2 Storing and Handling Test DISCS risus aci e o EE dA pue 16 17 7 Spare 19 ED docu Pr H 19 8 Trouble shooting nnn 20 8 1 Error Code VAN KU HE I PT 20 8 2 Debug amp Trouble Shooting 21 DA WOO ELECTRONICS 1 General Descriptions 1 1 Model Features Video DVD Playback MPEG4 option DivX DivX Model Kodak Picture CD compatible amp JPEG readable Audio CD CD R CD RW MP3 WMA Playback Firmware Upgradable Dolby Digital Output 7 active matrix TFT screen 16 9 wide aspect ratio Composite Video Output Ultra dimension amp light weight 200mm L x 155mm W x 38mm H 900g around e Slim size wireless remote control Rechargeable battery pack 12 volt car cigarette lighter cable Universal AC DC power adapter Audio video cable for TV connection Built in stereo speakers Two Stereo headphone jack
3. 19 Location Part NO Part Name Description Maker Remark 2 855 8105 Hiteker W O DivX Main Board GKB2 855 8138MX MEPG Board With DivX Hiteker With DivX U17 MT1389QE_D MTK1389D MTK W O DivX MPEG IC 011 ICMT1389DE C MTK1389C MTK With DivX 011 AT49LV4096AT 70TC FLASH Memory 4M Memory ATMEL W O DivX 014 ICMX26LV800BTC 70 8M Memory FUJITSU With DivX U7 IC42816100 7T SDRAM IC ISSI W O DivX SDRAM IC U13 IS42S16400 7T SDRAM IC ISSI With DivX U38 ICBA5954FP MOTOR DRIVE DRIVE IC ROHM W O DivX U12 ICBA5954FP IC DRIVE IC ROHM With DivX U12 24 02 W O DivX EEPROM IC U15 24 02 EEPROM IC ATMEL With DivX UMI 2 MP1580 DC TO DC MPS W O DivX Power Trans IC 01 2 1580 DC TO DC MPS With DivX U19 TPA6011 AUDIO Amplifier TI W O DivX AUDIO Trans IC U20 TPA6011 AUDIO Amplifier TI With DivX GKB4 021 8027MX Key PCB Function Key Part Hiteker For All GKB2 930 8026MX High Voltage PCB High Voltage PCB TOP STAR For All GKB2 855 8042MX Drive PCB TFT LCD Driver Hiteker For All U201 8806 Ul IR3Y29B VIDEO Decode IC VIDEO Decode IC SHARP For DM 520A Loader DVD Player Foryou For All HOP 1200W Pick up Pick up HITACH For All 03 030 1 49 Spindle Motor Spindle Motor Moretech For All WFF 030PB 08315 Sled Motor Sled Motor WeiZhen For All PW070XU3 TFT Screen TFT screen PVI For All GKB4 819 8045MX Rechargeabl
4. 45V TFT H3 3V 7 5V_TFT F10 yB TFT 15 TFT 7 5V TFT TFT 1 5 127 0 1uF C126 330uF 6 3V HVEND 1 0 DA WOO OG ELECTRONICS 6 AUDIO OUTPUT 10 DA WOO OG ELECTRONICS 3 Power 3 1 Power Supply Input voltage Normal voltage 100 to 240 Vac Variation range 90 to 264 Vac Input frequency Normal frequency 50 to 60 Hz Variation range 47 to 63 Hz Input current 0 6 arms max at any input voltage and max DC output rated load Inrush current 70 amps max cold start at 240 Vaz Input with rated load and 25 ambient AC leakage current 0 25 mA max at 240 Vac Input 3 2 Rechargeable Battery Output Voltage 8 4 6 0V Cut off Voltage 5 7 6 0V Charge voltage The battery pack should be charged when the input voltage is from11V to 15V Charger a Hiteker DC12V 2 7A adaptor b Hiteker DC12V 2 7A adaptor and Portable DVD LED is in red color when the battery pac
5. PLEASE READ ALL NOTES GIVEN IN THIS MANUAL Locate Place the unit on a firm flat surface Do not place in a high temperature upwards of 40 C or high wet upwards of 80 percent area Do not place in an area with a lot of dust Keep away from direct sunlight amp domestic heating equipment Do not fall any objects into the unit Care should be taken so that liquids are not spilled into the unit openings Such situations could result in fire or electrical shock Keep the DVD video player away from any magnetic articles such as speaker etc Superposition Please place the DVD player horizontally Do not place a heavy object amplifier receiver on it The object may fall causing serious personal injury DA WOO ELECTRONICS or death e This unit should be situated away from heat source such as amplifiers radiators stoves or any other units producing heat m Condensation Lens could be moistening in these cases e Turn heater shortly e Ina very wet room e Move the player from a cold environment to a heat environment quickly Being moisture inside the play could operate normally Please turn on power and wait about an hour for drying the moisture 18 DA WOO ELECTRONICS 7 Spare Parts 7 1 Key Parts List
6. 772 image is black and white Y Main Board B C D Check the 11 pin cable connected to the driver board to see if there is any problem of plugging Rule out the problem Check devices after Y C signal to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check U17 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing If the above actions are not working replace the Main Board Y Driver Board 29 DA WOO OG ELECTRONICS A D Measure the voltages of VGH VGE VCC VDD VIN and VSS to see if they correct Check to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check the devices surrounding U1 and U201 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check Y 1 Y2 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing If the above actions are not working replace the Driver Board 775 TFT image shakes or is distorted Y Main Board A B C D Check the 11 pin cable connected to the driver board to see if there is any problem of plugging Rule out the problem Check devices after Y C signal to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check U17 to see if there is any cold or hollow soldering and reverse solde
7. INVERTER DISPLAY 7 LCD PW070XU3 DC To DC 1580 TFT LCD Driver IR3Y29B HX8806 Loader DM 520A 2 Servo MPEG MT1389D MT1389C OG 2 3 2 Schematic Circuit Diagram 1 POWER ELECTRONICS DA MPS R156 4 LM2 NONO UMI BS Sync Vin EN CM3 0 022uF Vsw Comp GND FB MPS1580 JAKAL 5 100pF 4 RMS A ASK 6 8uH CM2 100uF 10V LU cms O 01UF BS Sync RM7 OPEN Vin EN CM9 RI i 0 022uF Vsw Comp CM10 GND FB MPS1580 100 4 RMB NASK RM11 4 7 NCTR 5V T gt gt NCTR_5V QM1 OPEN 3904 C120 220uF 6 3V lu LDO AV33 C121 220uF 6 3V lu CM7 220uF 6 3V LU 2 POWER FOR WOO ELECTRONICS DAS D2 ot 1 RB053L 30 2 c2 POWERJACK 0 1uF 47 2 1 R3 10k 8 2K R8 0 1 8 u6 BA05SFP VIN VOUT R5 3K L 3 POWDET MCU d 4 POWDET MPEG 45V TRAN Id L z R160 4 7 HSYNG R158 3300 TFTSV RIS QPENAOK hy a 018 OPEN 3904 3 3V TFT ui RT9
8. Parental Lock Anti Shock Protection DA WOO ELECTRONICS 1 2 Information Disk Format DVD VCD CD MP3 CD R CD RW MPEG4 OPTION JPEG Frequency Response DVD 48kHz Sampling 20Hz 20kHz CD 20Hz 20kHz Audio Video Section Audio input output x1 Video input output x1 S Video Coaxial output x1 Accessories Slim Size Remote Controller with 3V Battery 12 volt Car Cigarette Lighter Cable Universal AC DC Power Adapter Audio Cable Video Cable Ni MH Rechargeable Battery Pack S video Coaxial cable DA WOO ELECTRONICS 2 Electrical Characteristics 2 1 Optical Characteristics 7 0 16 9 diagonal Surface Treatment _Ani Glare and Hard Coating w m mem amp 2 2 Electrical Characteristics DVD SVCD VCD CD system decoding packeted element streams and audio video element streams Fully digital servo processing focusing tracking sledge and spindle servo control Fully digital calibration focusing tracking offset and balance Digital phase lock loop with phase equalizer Support Audio Video Photograph decoding and programming Programmable Y C delay relationship Embedded micro controller up to 0MHz operating frequency 1 8V and 3 3V dual power supply 208 pin POFP DA WOO ELECTRONICS 2 3 System Block Diagram 2 3 1 The System Block Diagram amp the Block s Function Description
9. Ifthe above actions are not working replace the Main Board DVD ROM A Ifthe abnormal picture is the problem of pause or skipping tracks then making sure if the disc has any scratches or dirt if no such problems then replace the loader 725 DVD abnormal picture Main Board A Check U17 to see if there is any cold or hollow soldering and short circuit problem and rule out the problem B Check the resistors or capacitors components or those adjacent to IC to see if there is any hollow soldering cold soldering wrong part or misplaced soldering C Ifthe above actions are not working replace the Main Board DVD ROM A the abnormal picture is the problem of pause or skipping tracks then making sure if the disc has any scratches or dirt if no such problems then replace the loader 726 Picture subtitle abnormal display or no display Y Main Board A Remove the top cover and dis assemble F W U17 Replace it with a good F W or re plug it then check if the action is normal Otherwise replace the F W B Check UI7 to see if there is any cold or hollow soldering and short circuit problem and rule out the problem C Ifthe above actions are not working replace the Main Board 727 Setting menu abnormal picture Y Main Board A Check U17 to see if there is any cold or hollow soldering and rule out the problem 26 DA WOO ELECTRONICS B Remove and dis assemble U7 with a 16Mbit SDRAM C Ifthe
10. 5 1415 16 17 2 LCD Button 4 DISC MENU Button 6 PREVIOUS Button 8 F FWD Button 10 UP Button 12 ENTER Button 14 LEFT Button 16 PAUSE Button 18 OPEN Button 13 WOO OG 3 Exploded View ELECTRONICS DA 4 mw Screw i saren otis Stel nsi e SEPT REMARK 14 DA WOO ELECTRONICS 5 Regulatory Standards 5 1 Safety e UL FDA e LVD 5 2 EMI e CE e FCC 5 3 Ergonomics Dolby DA WOO ELECTRONICS 6 Service Tools and Equipment 6 1Service Tools and Equipment Table Application Name General DVD Testing Disc General Tools screwdriver etc Confirm CD Testing Disc VCD Testing Disc Adjust Oscillograph Probes AV Cables TV Monitor Searing iron Grounding for electrostatic breakdown Antistatic wrist strap Conductive material steel sheet 6 2 Storing and Handling Test Discs It is important for a DVD testing disc keeping its surface precise Please care for storing and using it 1 Do not place the disc on worktable directly after using 2 Do not store discs in places subject to direct sunlight or near heat sources DA WOO 3 OC ELECTRONICS Do not place the disc on a glass surface It may damage the disc If this happened please use a new testing disc adjust DVD player precision 6 3 Notes
11. _ cB41 _1 2 22 220uF 16V ins iie 4 CB46 CE23 FLASH 9 24 015 WP ACC BYTE vcc STM29W160 MX29L V800 160 TSOP 48 pin 8M 16M 32M FLASH 220uF 16V que mei AD 21 yy AZ y A FLASH SQ vec SCL SDA EEPROM 24C16 SOP 8 ELECTRONICS DA WOO OG 5 VIDEO OUTPUT ASPDIF SVIDEO Y J7 2 scv 318 6 GND GND S VIDEO SVIDEO N __ 25V TFT gt gt 5V_TFT 48V TRAN ASPDIF kw PIN eon SCALE a CVBS_TFT ous TET _ CVBS_OUT ie OBE OUT gt TFT OUT TA CON4 13 SCALE 3 FA MODE ii TFT CVBS F2 GND F3 IDEO 10V CVBS TFT gt TFT OUT CVBS 5V C124 7 5V TFT 330pF OPEN 15V R153 100R VIDEO TV CVBS OUT N Z 0 CVBS OUT VIDEO TV C129 C130 330pF OPEN OPEN i 1 BI El 2N3904 J10 a VIDE VIDE GND GND VIDEO COAXIAL 10V TFT F4 NTSC PAL F5 SVIN F6 10V TFT 33V TFT Ef
12. above actions are not working replace the Main Board 751 Audio channel AOL no sound or abnormal sound Y Main Board A Remove the cover Check U15 on the Main board to see if there is any cold soldering hollow soldering or damage Rule out the problem B Check all parts following AOL to see if there is any cold or hollow soldering short circuit broken circuit parts missing wrong parts and rule out the problem C above actions are not working replace the Main Board 732 Audio right channel AOR no sound or abnormal sound Y Main Board A Remove the cover Check U15 on the Main board to see if there is any cold soldering hollow soldering or damage Rule out the problem B Check all parts following AOR to see if there is any cold or hollow soldering short circuit broken circuit parts missing wrong parts and rule out the problem C Ifthe above actions are not working replace the Main Board T33 abnormal sound Y Main Board A Remove the top cover check all flat cables in the system to see if they are correctly plugged to the fixed positions or re plug them B Check the resistors or capacitors components on the main board or those adjacent to IC to see if there is any hollow soldering or cold soldering C Ifthe above actions are not working replace the main board If it is still not working replace the loader 134 Audio no waveform sound or waveform sound abn
13. change Main Board 702 Power LED indicator not on or insufficient brightness Y Main Board A Open the cover of the portable DVD player to inspect if LEDfunctionsnormally B Measure the base electrode of Q1 to see if the voltage is high and the emitter of Q1 must be high voltage Q1 is a NPN 3904 type transistor If it is abnormal 21 DA WOO OG ELECTRONICS Please replace with a good one D Disassemble F W replace with a good one or re plug it to see if the LED lights up when Power ON E Ifthe above actions are not working replace the Main Board 703 Loading time too long Y Main Board A Check the flat cable to see if it is adhibited to the right place B Remove the cover to see if the resistors or resistor array adjacent to U38 and or U17 to see if there is any cold soldering hollow soldering misplaced soldering or wrong part C Ifthe above actions are not working replace the Main Board 704 Remote control bad sensing or sensing not functional Y Remote control A Ifthe main body of the system works normally then making sure that the battery of the Remote control has sufficient power if it is not replace the battery Y Main Board A Remove the top cover and the panel Check to see if IR has short circuit broken circuit hollow soldering or other problems Also check if the pins 1 of have power B Ifthe above actions not working replace the Main Board 705 Stay in the
14. if there is any cold or hollow soldering and reverse soldering of IC or parts missing If the above actions do not work after the inspection it means the main board or F W is bad If the disk is abnormal ask for a new version software 762 System can t play or system down after setting Y Main Board A B Check U17 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing If the above actions do not work after the inspection it means the main board or F W is bad Replace the main board or re burn the F W U11 3771 TFT image and color error Y Main Board A B C D Check the 11 pin cable connected to the driver board to see if there is any problem of plugging Rule out the problem Check devices after Y C signal to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check U17 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing If the above actions are not working replace the Main Board Y Driver Board A B C D Measure the voltages of VGH VGE VCC VDD VIN and VSS to see if they are correct Check to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check Y 1 Y2 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing If the above actions are not working replace the Driver Board
15. 167A 185CS 100uF 6 3V LU 3 3V 3 3 45V IN OUT BP mce 100uF 6 3V LU CTR LOAD gt gt cTR_LOAD CTR AUDIO AUDIO TFTSV POWDET MCU ERFIR c7 100uF 1 e L D3 1N5819 POWDET MPEG 22 POWDET_MCU gt gt POWDET_MPEG 5V_TRAN lt 5 TRAN 10V TFT 47uF 25V LU 05 TER9 5 100M 10 4TuF 25VILI 1N5819 C11 22uF 25VILI 45V TRAN U22 RT9262 DS i R13 20K 7 5V TFT Y LA 2 2 4 1 5819 BSH105 R14 8 1M 10 TFT 15V TFT 7 5V TFT 3 3V TFT 45V TFT gt gt 10V TFT gt gt 15V_TFT gt gt 7 5V_TFT gt gt 3 3V_TFT gt gt 5V_TFT 1O0uF 16V LU s lt 3 SERVO amp MPEG WOO ELECTRONICS DA M E IE j I Tow
16. Run In condition after power on can t be tested Y Main Board A same refer to 03 B Ifthe above actions are not working replace the Main Board 1706 System down at power on Y Main Board A Remove the top cover check all flat cables in the system to see if they are correctly plugged to the fixed positions or re plug them B Check the pin 1 of U3 to see if it is low voltage If not disassemble RS or pull it to low voltage with a lead C Ifthe above actions are not working replace the Main Board 707 System down during play Y Main Board A Exclude the condition of using battry The system will down when the voltage is too low B Disassemble U17 F W replace with a good one or re plug it to see if the symptom will disappear 22 DA WOO ELECTRONICS C Remove the top cover check all flat cables in the system to see if they are correctly plugged to the fixed positions or re plug them D Check the capacitors C19 and the diode D6 to see if the reset circuit works normally E Ifthe above actions are not working replace the Main Board DVD ROM A Check the loader to see if it is not stable any condition that some of the discs can t be played If so replace the loader DVD DISC Check the Test Disc to see if there is any serious scratch or ring shape circular shape scratches if so replace the Test Disc and test again 108 Power on unstable Y Main Board A Remove the top cover check a
17. S M No OSPC740001 Service Manual Portable DVD Player Model DPC 7400 Series Caution In this Manual some parts can be changed for improving their performance without notice in the parts list DA WOO ELECTRONICS May 2005 DA WOO OG ELECTRONICS Revision Record Date Section Description 17 Oct 2005 New edition Design and specifications are subject to change without notice All trademarks used in the specifications are the property of their respective owners DA WOO ELECTRONICS 1 General 1 Il Model Features sas sa pecori x YER RARO a 1 12 2 2 Electrical Characteristics nnl 3 21 3 2222 Electrical Characteristics ra a 3 2 3 System BOI SA sta ai a 4 a lm 11 DONEC NGA TE EE DN EDD ES 11 3 2 Rechargeable 11 4 Dimension Physical 13 4 1 Outline RP 13 42 Physical GIatactetiS OB scio PE ree S raa vao NE EE TK NG Ga a E 13 43 Exploded Vik 14 5 Regulatory 15 Sde AREN ore devi SOEUR hn 15 S NOU
18. e Battery Ni MH2400mAh Rebenergy For All GKB2 930 8015 AC DC Adapter DC 12V 2 7A SiDa For GKB2 018 8072WX Remote Control Remote Control FeiDa For All DA WOO ELECTRONICS 8 Trouble Shooting 8 1 Error Code Table CODE Descriptions of Error 01 No power no action T02 Power Led indicator is not on or insufficient brightness T03 Loading time too long T04 Remote control bad sensing or not functional 05 System stays in the Run In condition after power on can t be tested T06 System down at power on 07 System down during playing 08 Power on unstable T09 Abnormal sound in the system T11 Can t read the disc No Disc T12 Disc drive no action or locked T13 Disc drive scratches the disc T14 Some discs can t be played can t play CD or VCD or DVD 15 Head does not work T16 Spindle does not work T21 No video abnormal Please indicate the abnormal condition T22 Video no video abnormal Please indicate the abnormal condition T23 S Video No video abnormal or black amp white Please indicate the abnormal condition T24 VCD picture abnormal Please indicate the abnormal condition T25 DVD picture abnormal Please indicate the abnormal condition T26 Picture subtitle display abnormal or no display T27 Setting menu picture abnormal Please indicate the abnormal condition T31 Audio left sound channel AOL doe
19. eck all flat cables in the system to see if they are correctly plugged to the fixed positions or re plug them Check RLC following CVBS to see if there is any wrong parts cold and hollow soldering short circuit broken circuit broken parts and rule out the problem If the above actions do not work then check U17Pin175 and Pin182 to see if there is CVBS signals If the above actions are not working replace the Main Board 723 S Video no video abnormal or black amp white Y Main Board A Remove the cover Check the main board to see if there is any cold or hollow soldering and rule out the problem Remove the top cover check all flat cables in the system to see if they are correctly plugged to the fixed positions or re plug them Check RLC following Y and C to see if there is any wrong parts cold and hollow soldering short circuit broken circuit broken parts and rule out the problem 25 DA WOO OG ELECTRONICS D Ifthe above actions do not work then check U17 Pin179 and Pin181 to see if there is Y and C signals E Ifthe above actions are not working replace the Main Board 724 VCD abnormal picture Y Main Board A Check main board to see if there is any cold or hollow soldering and short circuit problem and rule out the problem B Check the resistors or capacitors components or those adjacent to IC to see if there is any hollow soldering cold soldering wrong part or misplaced soldering C
20. k is in charging and turns into green color when batter pack is full If the battery pack is in Full status no matter use adaptor charge directly or link DVD to charge again the LED must be turn into green color in 15 min The cycle life of battery pack has more than 300 cycles Charge The battery pack must be able to charge when used the Hiteker DC12V 2 7A adaptor or Hiteker DC12V 2 7A adaptor and portable DVD power off status Discharge Using the battery pack as the power source for portable DVD that in DVD disc playing mode the discharging time must be exceed 2 5hrs 3 2 1 Electrical Protection The battery pack shall be capable of withstanding a continuous short circuit output without damage 25 DA WOO ELECTRONICS OC The battery pack shall return to normal operation only after the fault has been removed Charge amp Play Time of Battery Pack A thermal fuse must be added on the surface of cell body to protect the battery pack Apolyswitch must be add to protect the battery pack Charge Time DVD Title Styling hr Play Time hr Ni MH 2400mAh 4 5 2 5 6S1P For DPC 7400 Series 12 DA WOO ELECTRONICS 4 Dimension amp Physical Characteristics 4 1 Outline Dimension 200mm L 155mm W x 38mm H 4 2 Physical Characteristics 1 LCD Screen 3 SUB Title Button 11 RIGHT Button 13 DOWN Button 15 PLAY Button 17 S TOP Button 19 5
21. ll flat cables in the system to see if they are correctly plugged to the fixed positions or re plug them B Check the Q3 to see if it works normally with a 1 8V output voltage C Check the reset circuit refer to the title TO7 D D Ifthe above actions are not working replace the Main Board 109 Abnormal sound in the machine base Power on abnormal sound DVD ROM A Check the loader to see if it is the source of the abnormal sound If so replace the loader B Ifthe abnormal sound comes from the audio speakers check the audion PNP3906 type Q16 and NPN 3904 type Q8 9 10 12 13 15 to confirm the mute circuit works normally If not change the audion TIl Disc drive can t read NO DISC Y Main Board A Remove the top cover check the 28 pin flat cable in the system to see if they are correctly plugged to the fixed positions or re plug them B Check the resistors or resistor array adjacent to U38 and U17 to see if there is any hollow soldering or cold soldering C Ifthe above actions are not working replace the Main Board If it is still not working replace the loader DVD ROM A Check the loader to see if it can t read If so replace the loader 2 Disc drive no action or locked Y Main Board A Remove the cover Check to see if it is caused by mis assembly B Check the resistors or capacitors adjacent to U38 to see if there is any hollow soldering or cold soldering C Ifthe above actions are not w
22. ly plugged to the fixed positions or re plug them B Check the resistors or capacitors adjacent to IC U17 to see if there is any hollow soldering cold soldering wrong part or misplaced soldering C Ifthe above actions are not working replace the loader If it is still not working replace the main board 721 no video abnormal Y Main Board A Remove the top cover check all flat cables in the system to see if they are 24 DA WOO ELECTRONICS C D E correctly plugged to the fixed positions or re plug them Use oscilloscope to measure if Y1 generates 27MHz If it does not generate said frequency and the problems such as cold or hollow soldering have been ruled out it maybe Y1 work abnormally Replace Y1 with a 27MHz fundamental frequency oscillater Check if U17 F W IC has any problem Check if switch for TFT on off is normal replace a new one if necessary If the above actions are not working replace the Main Board Y Driver Board A B Check VR6 VRA VRI VR7 VR5 is using the correct component Also check if it s damaged Adjust VRA VR6 VRI VR7 VRS to the appropriate value DVD ROM less likely to happen If it is useless to change the main board then replace the loader 722 Video no video abnormal Y Main Board A Remove the cover Check the main board to see if there is any cold or hollow soldering and rule out the problem Remove the top cover ch
23. n t be still or stopped Y Remote control A If the main body of the system works normally then making sure that the battery of the Remote control has sufficient power if it is not replace the battery Y Main Board A Check to see if U17 is damaged and check all parts following U17 to see if there is any cold or hollow soldering short circuit broken circuit broken parts parts missing and rule out the problem B Check to see whether U17 is damaged C Ifthe above actions are not working replace the Main Board 752 Cant execute fast forward or rewind Y Main Board A Check to see if U17 is damaged and check all parts following U17 to see if there is any cold or hollow soldering short circuit broken circuit broken parts parts missing and rule out the problem B Check to see whether U17 is damaged C Ifthe above actions do not work after the inspection it means the main board or F W is bad Replace the main board or re burn the F W U11 T53 Panel button Y Main Board A Check U17 and 11 pin plug in jack CON2 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing B actions do not work after the inspection check the 1 1pin cable to see if there is any damage C Ifthe above actions are not working Replace the control board or the main board T l Cant enter the system setting 28 DA WOO OG ELECTRONICS Y Main Board A B C Check U17 to see
24. ny problem of plugging Rule out the problem B Check the 3 pin cable connected to the inverter board to see if there is any problem of plugging Rule out the problem C Ifthe above actions are not working replace the Main Board Driver Board A Measure the voltage U1 to see if it is correct B Check the devices surrounding VR202 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing C Ifthe above actions are not working replace the Driver Board Inverter Board A Check the 3 pin cable connected to the inverter board to see if there is any problem of plugging Rule out the problem B Check the sharing cable connected to the panel to see if there is any problem of plugging Rule out the problem C Check the high voltage cable connected to the panel to see if there is any problem of plugging Rule out the problem D Ifthe above actions not working replace the inverter board 31
25. orking replace the loader If it is still not working 23 DA WOO OG ELECTRONICS replace the main board T13 Disc drive scratches disc Y Main Board A Check the resistors or capacitors adjacent to IC U17 to see if there is any hollow soldering cold soldering wrong part or misplaced soldering B Ifthe above actions are not working replace the loader If it is still not working replace the main board DVD ROM A Check the loader to see if it is the cause of disc scratching If so replace the loader 1714 Not every disc can be played Y Main Board A Check the resistors or capacitors adjacent to IC U17 to see if there is any hollow soldering cold soldering wrong part or misplaced soldering B Ifthe above actions are not working replace the loader If it is still not working replace the main board 5 Head does not work Y Main Board A Remove the top cover check the 28 pin flat cable and the 2 pin cable in the system to see if they are correctly plugged to the fixed positions or re plug them B Check the resistors or capacitors adjacent to IC U17 to see if there is any hollow soldering cold soldering wrong part or misplaced soldering C Ifthe above actions are not working replace the loader If it is still not working replace the main board T16 Spindle does not work Y Main Board A Remove the top cover check the 4 pin flat cable in the system to see if they are correct
26. ormal Y Main Board A Remove the cover Check U15 on the main board to see if there is any cold or hollow soldering and rule out the problem B Check all parts following AOL and AOR to see if there is any cold or hollow soldering short circuit broken circuit parts missing or wrong parts Rule out the problem C Ifthe above actions are not working replace the Main Board 741 Earphone Audio no waveform sound or waveform sound abnormal Y Main Board A Remove the top cover check all flat cables in the system to see if they are correctly plugged to the fixed positions or re plug them 27 DA WOO ELECTRONICS B Check 019 015 and J4 CON3 to see if there is any cold or hollow soldering and rule out the problem C Ifthe above action does not work after the inspection replace the main board 742 gt Earphone Audio right no waveform sound or waveform sound abnormal Y Main Board Check 019 015 and J4 CON3 to see if there is any cold or hollow soldering and rule out the problem Especially check for C24 C26 C28 B Ifthe above action does not work after the inspection replace the main board 745 Earphone Audio left no waveform sound or waveform sound abnormal Y Main Board A Check 019 015 and J4 CON3 to see if there is any cold or hollow soldering and rule out the problem Especially check for C27 C36 C67 B Ifthe above action does not work after the inspection replace the main board 751 Video ca
27. ring of IC or parts missing If the above actions are not working replace the Main Board Y Driver Board A D E Measure the voltages of VGH VGE VCC VDD VIN and VSS to see if they are correct Check to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check the devices surrounding U1 and U201 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check Y 1 Y2 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing If the above actions are not working replace the Driver Board 774 PAL color strip Y Driver Board A Measure the voltages of VGH VGE VCC VDD VIN and VSS to see if they are correct Check to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check the devices surrounding U1 and U201 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing Check Y1 Y2 to see if there is any cold or hollow soldering and reverse soldering 30 DA WOO ELECTRONICS soldering of IC or parts missing e 175 TFT ripple v F Check Pin 1 to Pin 16 U202 for any cold or hollow soldering and reverse soldering of IC or parts missing G Ifthe above actions are not working replace the Driver Board Main Board A Check the 13 pin cables connected to the driver board to see if there is a
28. s not have waveform sound or waveform sound abnormal T32 Audio right sound channel AOR does not have waveform sound or waveform sound abnormal 20 DA WOO OG ELECTRONICS T33 MP3 abnormal sound T34 Audio no waveform sound or waveform sound abnormal T41 Earphone no sound or the sound has pause abnormal sound noise echo T42 Earphone right no sound or the sound has pause abnormal sound noise T43 Earphone left no sound or the sound has pause abnormal sound noise T61 T51 Video can t be still or stop T52 Can t execute fast forward or rewind T53 Panel button Can t enter the system setting T62 The system can not be played or it is down after the system is set T71 TFT image and color error T72 TFT image is black and white T73 TFT image shakes and is distorted T74 TFT PAL color strip T75 TFT ripple 6 2 Debug amp Trouble Shooting Please check the PCB for any missing components and bad soldering 70 No Power Y Main Board A Check for components on the Main Board to see if there are any short circuits B Check for the power adapter to see if the 12v power is abnormal C Check for components C6 C7 CE100 C3 on the Main Board to see if there are any short circuits D Check for component CN1 on the Main Board to see if the switch have function E Ifnone ofthe above actions is effective please
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