Daewoo DPC-7400 Series Service Manual

No.:

Revision:

0.1

Date:

Service Manual for

Portable DVD

DPC-7400 Series

Name of

Company DAEWOO ELECTRONICS CORP.

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.

Revision Record

Date

Rev No

Section

Description

17/ Oct./ 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 respective owners.

1. General Descriptions

……………………………………………………

1.1. Model Features……………………………………………………………… ….

1.2. Information………………………………………………………………………

2. Electrical Characteristics………………………………………………

2.1. Optical Characteristics

2.2. Electrical Characteristics

2.3. System Block Diagram

……………………………………………………………

……………………………………………………

…………………………………………………………

3. Power……………………………………………………………………….

3.1. Power Supply

3.2. Rechargeable Battery.

…………………………………………………………………

…………………………………………………………

4. Dimension & Physical Characteristics…………………………….

4.1. Outline Dimension…………………………………………………………… ….

4.2. Physical Characteristics

iew

4.3.

V

Exploded

……………………………………………………………………

………………………………………………………

…..

.

….

….

…..

11

11

11

13

13

13

14

1

1

2

3

3

3

4

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. Storing and Handling

………………………………………………

Test Discs

…

……………………………………………..

6.3. Notes……………………………………………………………………………

7. Spare Parts……………………………………………………………….

7.1. key Parts List..……………………………………………………………………

8. Anexo

…………………………………………………………

….

15

..

15 15

.

15

16

16 16

17

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19

19

20

- 1 -

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

 Dolby Digital Output

 7" active-matrix TFT screen, 16:9 wide aspect ratio

 Composite Video Output

 Ultra dimension & light weight: 200mm(L) x 155mm(W) x 38mm(H) / 900g (around)

 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

 Parental Lock



Anti Shock Protection

- 2 -

1.2 Information

Disk Format DVD, VCD, CD, MP3, CD-R, CD-RW, MPEG4 (OPTION),

DivX(DivX Model),WMA

Video System NTSC / PAL/Auto

Video Decompression MPEG-2 (ISO/IEC-13818), MPEG-1

Video Output 800~1200mVpp/75 ohm

Audio Characteristic 2-Channel Analog

Analog Output 1.0~2.0Vrms/10K ohm

Frequency Response DVD: 48kHz Sampling: 20Hz-20kHz

CD:

20Hz-20kHz

S/N Ratio <= -65dB

Dynamic Range <= -85dB

Audio Output Noise &Distortion Less than<= 0.01%

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 Digital Output: Coaxial x1

Headphone Jack Headphone Jack x1

Line Voltage

AC 100~240 VAC ± 10%(50/60Hz), (Adapter)

Power Consumption 12W (DC 12V, 1.0A)

Remote Control DC 3V Infra-red

Dimensions 200mm(L) x 155mm(W) x 38mm(H)

Weight 900 g (around)

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

- 3 -

2 Electrical Characteristics

2.1 Optical Characteristics

Parameter Specifications Unit

Screen Size 7.0 (16:9 diagonal) inch

Display Format

1400 (H)  234 (V)

dot

Active Area

154.08 (H)  86.08 (V)

mm

Dot Pitch

0.107 (H)  0.370 (V)

mm

Pixel Configuration Stripe

Outline Dimension

166.0 (W)  100.0 (H)  7.2 (D)(typ.)

mm

Surface Treatment Anti-Glare and Hard 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 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 50MHz operating frequency



1.8V and 3.3V dual power supply, 208 pin PQFP

- 4 -

2.3 System 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
IR3Y29B +HX8806

- 5 -

2.3.2 Schematic Circuit Diagram

(1)POWER_MPS

1

DELETA

9VIN

+3.3V

+5V

NCTR_5V

CTR_5V

LDO_AV33

RFV33

NCTR_5V

9VIN

+5V

+3.3V

CTR_5V

NCTR_5V

+3.3V

RFV33

+3.3V

LDO_AV33

RM4

39K

QM1

OPEN/3904

1

2 3

UM1

MPS1580

123

4

876

5

BS

Vin

Vsw

GND

Sync

EN

Comp

FB

CM7

220uF/6.3V/LU

D1

LED1

1

3

2

C135

22uF

C4

10uF

UM2

MPS1580

123

4

876

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

FB

RM110K 1%

R156

4.7k/open

CB60

0.1uF

RM10

10K

RM8 16.9K

L27

FB

RM9

OPEN

RM2 33R

Q1

3904

1

2 3

CM3

0.022uF

CM1

0.01uF

CM5

100pF

CM10

100pF

CM9

0.022uF

CM8

0.01uF

RM610K 1%

LM2

6.8uH

RM5

10K

C136

22uF

C119

10uF

DM1

DIODE

1 2

CM2

100uF/10V/LU

DM2

DIODE

1 2

LM1

22uH

LM3

22uH

R2 330O