Daewoo DPC-7900 Series, Serivce Manual

Page 1: ...Portable DVD NOV 2006 DPC 7900 Series OSDPC79001...

Page 2: ...ord Date Rev No Section Description 17 Dec 2005 0 1 New edition Design and specifications are subject to change without notice All trademarks used in the specifications are the property of their respe...

Page 3: ...eristics 4 1 Outline Dimension 4 2 Physical Characteristics 4 3 Exploded View 5 Regulatory Standards 5 1 Safety 5 2 EMI 5 3 Ergonomics 6 Service Tools and Equipment 6 1 Service Tools and Equipment 6 2...

Page 4: ...tal Output 7 active matrix TFT screen 16 9 wide aspect ratio Composite Video Output Ultra dimension light weight 205mm L x 163 5mm W x 38mm H 900g around Slim size wireless remote control Rechargeable...

Page 5: ...01 Digital Output SPDIF Headphone Jack 32ohm 30Mw 8ohm LCD Display 7 active matrix TFT type Audio Video Section Audio input output x1 Video input output x1 S Video Coaxial output x1 Audio Section Dig...

Page 6: ...Coating Weight 180 10 g 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...

Page 7: ...tem Block Diagram 2 3 1 The System Block Diagram the Block s Function Description DC To DC MP1580 1 Loader DM 520A 2 Servo MPEG MT1389D MT1389C DISPLAY 7 TFT LCD PW070XU3 INVERTER TFT LCD Driver IR3Y2...

Page 8: ...3 2 C135 22uF C4 10uF UM2 MPS1580 1 2 3 4 8 7 6 5 BS Vin Vsw GND Sync EN Comp FB LM4 6 8uH RM7 OPEN R1 330O C120 220uF 6 3V lu RM3 30 9K RM12 OPEN 10K CB59 0 1uF RM11 4 7K open C121 220uF 6 3V lu L26...

Page 9: ...9 3 9K L2 20uH Q2 BSH105 1 3 2 C1 100uF 6 3V LU R15 1 6M U1 RT9167A 185CS 1 2 3 4 5 6 7 8 SHDN IN OUT BP GND GND GND GND R6 3 3K R18 560K C18 0 1uF U3B LM393 5 6 7 8 4 C17 1000pF D4 1N5819 1 2 L1 20uH...

Page 10: ...20 24 27 6 4 5 28 8 11 17 18 16 23 22 25 26 29 30 VINFC PVCC1 PGND VOSL CF2 CF1 VOTK VNFFC VOFC VOFC PVCC2 PGND VNFTK CTK2 BIAS VOSL VINSL VINSL STBY VCC VOSL VOLD VOLD VOTK VINLD PREGND CTK1 VINTK G...

Page 11: ...DQ2 DQ3 VCCQ DQ4 DQ5 VSSQ DQ6 DQ7 VCCQ DQML WE CAS RAS CS BA A11 A10 A0 A1 A2 A3 VCC VSS A4 A5 A6 A7 A8 A9 NC CKE CLK DQMH NC VCCQ DQ8 DQ9 VSSQ DQ10 DQ11 VCCQ DQ12 DQ13 VSSQ DQ14 DQ15 VSS CB54 0 1uF...

Page 12: ...FB F7 FB F8 FB F9 FB R154 100R F11 FB F12 FB L22 1 8uH L43 0 L18 1 8uH R146 150R C43 47pF L45 1 8uH R149 150R C44 47pF L44 0 J10 VIDEO COAXIAL 5 4 2 3 1 GND GND VIDEO COAXIAL VIDEO C129 OPEN C46 270p...

Page 13: ...K 2 3 4 5 6 1 C20 47uF 10V C40 100uF 6 3V R97 15K R140 4 7K C37 47uF 10V C38 100uF 6 3V R102 10K L13 10uH R135 200K C39 100uF 6 3V C62 0 1uF C59 220pF C182 2 2uF C35 47uF 10V Q14 9014 1 2 3 R127 4 7K...

Page 14: ...r b Hiteker DC12V 2 0A adaptor and Portable DVD LED is in red color when the battery pack is in charging and turns into green color when batter pack is full If the battery pack is in Full status no ma...

Page 15: ...been removed A thermal fuse must be added on the surface of cell body to protect the battery pack A polyswitch must be add to protect the battery pack Charge Play Time of Battery Pack Charge Time hr...

Page 16: ...mm L x 163 5mm W x 38mm H 4 2 Physical Characteristics 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 15 1 LCD SCREEN 3 DISC MENU 5 TV MODE 7 SUB TITLE 9 PAUSE 11 ENTER 13 SETUP 15 SPEAKERS 2 TFT ON OFF KNOB 4 P...

Page 17: ...14 4 3 Exploded View 4 3 1 DVD Door Mainbody_top module...

Page 18: ...15 4 3 Exploded View 4 3 2 Keyboard Mainbody_top module...

Page 19: ...16 4 3 Exploded View 4 3 3 Mecha Mainbody_bottom module...

Page 20: ...17 4 3 Exploded View 4 3 4 Mainbody module...

Page 21: ...18 4 3 Exploded View 4 3 5 Display module Mainbody module...

Page 22: ...19 5 Regulatory Standards 5 1 Safety UL FDA 5 2 EMI CE FCC 5 3 Ergonomics Dolby LVD...

Page 23: ...Cables Adjust TV Monitor Searing iron Antistatic wrist strap Groundingforelectrostaticbreakdown Conductive material steel sheet 6 2 Storing and Handling Test Discs It is important for a DVD testing d...

Page 24: ...t area Do not place in an area with a lot of dust Keep away from direct sunlight domestic heating equipment Do not fall any objects into the unit Care should be taken so that liquids are not spilled i...

Page 25: ...er units producing heat Condensation Lens could be moistening in these cases Turn on heater shortly In a very wet room Move the player from a cold environment to a heat environment quickly Being moist...

Page 26: ...1580 DC TO DC MPS W O DivX U1 2 MP1580 Power Trans IC DC TO DC MPS With DivX U19 TPA6011 AUDIO Amplifier TI W O DivX U20 TPA6011 AUDIO Trans IC AUDIO Amplifier TI With DivX GKB4 021 8027MX Key PCB Fun...

Page 27: ...cs can t be played can t play CD or VCD or DVD T15 Head does not work T16 Spindle does not work Video Test T21 No video abnormal Please indicate the abnormal condition T22 Video no video abnormal Plea...

Page 28: ...e and color error T72 TFT image is black and white T73 TFT image shakes and is distorted T74 TFT PAL color strip 6 2 Debug Trouble Shooting CB for any missing components and bad soldering T01 No Power...

Page 29: ...ard A Remove the top cover and the panel Check to see if IR1 has short circuit broken circuit hollow soldering or other problems Also check if the pins 1 of IR1 have power B If the above actions are n...

Page 30: ...Abnormal sound in the machine base Power on abnormal sound DVD ROM A Checktheloadertoseeifitisthesourceoftheabnormalsound Ifso replacetheloader B If the abnormal sound comes from the audio speakers ch...

Page 31: ...emove 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 adjace...

Page 32: ...e main board to see if there is any cold or hollow soldering and rule out the problem B Remove the top cover check all flat cables in the system to see if they are correctly plugged to the fixed posit...

Page 33: ...cold or hollow soldering and short circuit problem and rule out the problem B Check the resistors or capacitors adjacent to IC U17 to see if there is any hollow soldering cold soldering wrong part or...

Page 34: ...problem C If the above actions are not working replace the Main Board T33 MP3 abnormal sound Main Board A Remove the top cover check all flat cables in the system to see if they are correctly plugged...

Page 35: ...t power if it is not replace the battery 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 brok...

Page 36: ...ering of IC or parts missing C Check U17 to see if there is any cold or hollow soldering and reverse soldering of IC or parts missing D If the above actions are not working replace the Main Board Driv...

Page 37: ...reverse soldering of IC or parts missing D If the above actions are not working replace the Main Board Driver Board A Measure the voltages of VGH VGE VCC VDD VIN and VSS to see if they are correct B...

Page 38: ...ow soldering and reverse soldering of IC or parts missing C If the above actions are not working replace the Driver Board High Voltage Board A Check the 3 pin cable connected to the high voltage board...