Daewoo DPC-7909 Series Service Manual
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Daewoo DPC-7909 Series Service Manual

Daewoo DPC-7909 Series Service Manual

Portable dvd
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Service Manual for
Portable DVD DPC-7909 Series
Name of Company
Approved by
SIGNATURE
/
/
/
Please return 1 copy for our confirmation
with your signature and comments.
SANYO ELECTRONICS CORP.
DATE
APPROVED BY
REVIEWED BY
No.:
Revision:
Date:
PREPARED BY
Elliott Chang
0.1
DATE

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Summary of Contents for Daewoo DPC-7909 Series

  • Page 1 No.: Revision: Date: Service Manual for Portable DVD DPC-7909 Series SANYO ELECTRONICS CORP. Name of Company Approved by SIGNATURE DATE APPROVED BY DATE REVIEWED BY PREPARED BY Elliott Chang Please return 1 copy for our confirmation with your signature and comments.

  • Page 2: Revision Record

    Revision Record Description Date Rev No Section 17/May/ 2007 New edition Design and specifications are subject to change without notice. All trademarks used in the specifications are the property of their respective owners.

  • Page 4: General Descriptions

    1 General Descriptions 1.1 Model Features Video: DVD Playback, MPEG4(option) ,DivX(DivX Model),Kodak Picture CD compatible & JPEG readable Audio: CD, CD-R, CD-RW, MP3, WMA Playback Firmware Upgradable Anti Shock Protection 7" active-matrix TFT screen, 16:9 wide aspect ratio Composite Video Output Ultra dimension &...

  • Page 6: Electrical Characteristics

    2 Electrical Characteristics 2.1 Optical Characteristics Parameter Specifications Unit Screen Size 7.0 (16:9 diagonal) inch 480x3(RGB) 234 Display Format Active Area 154.08 (W) 86.58 (H) Dot Pitch 0.107 (W) 0.370 (H) Pixel Configuration Stripe 164.9 (W) Ø 100.0 (H) Ø 5.7 (D)(typ.) Outline Dimension Surface Treatment Anti-Glare...
  • Page 7 2.3 System Block Diagram 2.3.1. The System Block Diagram & the Block's Function Description LED BACK-LIGHT DRIVER DISPLAY 7” TFT LED AT070TN07-R(A) DC To DC MP1411 Servo +MPEG MT1389P Loader DM-512 - 4 -...

  • Page 8: Schematic Circuit Diagram

    2.4 Schematic Circuit Diagram ( 1 ) P O W E R _ M P S - 5 -...
  • Page 9 (3) SERVO&MPEG BOTTOM BOTTOM - 6 -...
  • Page 10 (4) SDRAM&FLASH&EEPROM - 7 -...

  • Page 11: Video Output

    (5) VIDEO OUTPUT - 8 -...

  • Page 12: Audio Output

    (6) AUDIO OUTPUT - 9 -...

  • Page 13: Power Supply

    3 Power 3.1 Power Supply Input voltage: Normal voltage: 100 to 240 Vac. Input frequency: Normal frequency: 50 to 60 Hz. Input current: 1A at 100Vac at rated load 2A Inrush current: The inrush current will not exceed 30A at 100V AC input cold start 25 3.2 Rechargeable Battery Output Voltage 8.4~6.5V Cut-off Voltage 5.7~6.5V...
  • Page 14 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 DVD Title Styling L (hr) Play Time (hr) Li 2200mAh For DPC-7909 Series - 11 -...
  • Page 15 4 Dimension & Physical Characteristics 4.1 Outline Dimension 235mm(W) x 163mm(H) x 30mm(D) 4.2 Physical Characteristics - 12 -...
  • Page 16 4.3 Exploded View 4.3 Exploded View - 13 -...

  • Page 17: Regulatory Standards

    Regulatory Standards 5.1 Safety 5.2 EMI 5.3 Ergonomics Dolby - 14 -...

  • Page 18: Service Tools And Equipment Table

    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.
  • Page 19 3. 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 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 ) or high wet (upwards of 80 percent) area.
  • Page 20 or death. This unit should be situated away from heat source, such as amplifiers, radiators, stoves or any other 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 moisture inside the play could operate normally.
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  • Page 24 . Replace with a good one or re-plug it to see if the LED lights up when Power ON. If the above actions are not working, replace the Main Board. T03 Loading time too long Main Board A. Check the flat cable to see if it is adhibited to the right place. B.
  • Page 25 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 CE29 and the diode D11 to see if the reset circuit works normally. E.
  • Page 26 replace the main board. T12 Disc drive scratches the disc Main Board A. Check the resistors or capacitors adjacent to IC(U7) to see if there is any hollow soldering, cold soldering, wrong part, or misplaced soldering. If the above actions are not working, replace the loader. If it is still not working, replace the main board.

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