Dvd Portatil Daewoo Dpc 7900

Portable DVD

NOV. 2006

DPC-7900 Series

OSDPC79001

Revision Record

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 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 …………………………………………………..

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. Storing and Handling Test Discs ……………………………………

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

7. Spare Parts …………………………………………………………

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

8. Trouble shooting …………………………………………………………

8.1. Error Code Table……………………………………………………

8.2. Debug & Trouble Shooting ……………………………………………

1

1

2

3

3

3

4

11

11

11

13

13

13

14

19

19

19

19

20

20

20

21

23

23

24

24

25

2.4. Schematic Circuit Diagram ………………………………………… 5

- 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: 205mm(L) x 163.5mm(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

- 15 -

Anti Shock Protection

- 2 -

1.2 Information

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

Kodak Picture CD, 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 ohmFrequency 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 205mm(L) x 163.5mm(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

zhang_gq

- 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

zhang_gq

DC to DC MP1580 1. Mech MG9807H1 2. Servo +MPEG MT1389D DISPLAY 7” TFT---LCD PW070XS2 INVERTER TFT---LCD driver IR3Y29BM +PVI-1004B

- 5 -

2.4 Schematic Circuit Diagram

( 1 ) P O W E R _ M P S

1

DELETA

9VIN

+3.3V +5V

NC

TR_5V

CTR

_5V

LDO

_AV

33

RFV

33

NC

TR_5V

9VIN

+5V

+3.3V

CTR

_5V

NC

TR_5V

+3.3V

RFV

33

+3.3V

LDO

_AV

33

RM

439K

QM

1O

PE

N/3904

1

2 3

UM

1

MP

S1580

1234

8765

BSVinVswG

ND

SyncEN

Com

pFB

CM

7220uF/6.3V

/LU

D1

LED

1

1

3

2

C135

22uF

C410uF

UM

2

MP

S1580

1234

8765

BSVinVswG

ND

SyncEN

Com

pFB

LM4

6.8uH

RM

7O

PEN

R1330O

+C

120220uF/6.3V

/lu

RM

330.9K

RM

12O

PE

N/10K

CB

590.1uF

RM

114.7K/open

+C

121220uF/6.3V

/lu

L26

FB

RM

110K

1%

R156

4.7k/open

CB

600.1uF

RM

1010K

RM

816.9K

L27

FB

RM

9O

PEN

RM

233R

Q1

39041

2 3

CM

30.022uF

CM

1

0.01uF

CM

5100pF

CM

10100pF C

M9

0.022uF

CM

8

0.01uF

RM

610K

1%

LM2

6.8uH

RM

510K

C136

22uF

C11910uF

DM

1

DIO

DE

1 2

CM

2

100uF/10V/LU

DM

2

DIO

DE

1 2

LM122uH

LM322uH

R2

330O

zhang_gq

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 R1 330Ω CM7 220uF/6.3V/LU LM4 6.8uH R2 330Ω CM2 100uF/10V/LU LM2 6.8uH L26 FB L27 FB CB59 0.1uF CB60 0.1uF C135 22uF C136 22uF D1 LED1 1 3 2 QM1 OPEN/3904 1 2 3 C4 10uF C119 10uF RM11 4.7K/open RM12 OPEN/10K RM9 OPEN RM3 30.9K RM7 OPEN RM10 10K RM110K 1% UM1 MPS1580 1234 8765 BS Vin Vsw GND Sync EN Comp FB UM2 MPS1580 1234 8765 BS Vin Vsw GND Sync EN Comp FB + C120 220uF/6.3V/lu R156 4.7k/open + C121 220uF/6.3V/lu CM5 100pF CM1 0.01uF CM3 0.022uF RM8 16.9K LM3 22uH LM1 22uH RM610K 1% CM8 0.01uF CM9 0.022uF CM10 100pF DM2 DIODE 1 2 DM1 DIODE 1 2 RM4 39K RM2 33R Q1 3904 1 2 3 RM5 10K

- 6 -

(2) POWER FOR TFT

1 1

1

11

11

-10V_TFT

+15V_TFT

+7.5V_TFT

VSYNC

#

PO

WD

ET_M

CU

+3.3V_TFT

+5V_TFT

+5V_TRAN

VIN

+3.3V

+5VV

18

+3.3V_TFT

+5V_TRAN

9VIN

VOU

T

9VIN

CTR

_LOAD

CTR

_AUD

IO

PO

WD

ET_M

PE

G

CTR

_TFT5V

PO

WD

ET_M

CU

+5V_TRAN

HSYN

C#

VCC

+5V_TFT

+7.5V_TFT

+3.3V_TFT

-10V_TFT

VCC

+15V_TFT

+3.3V

V18

+3.3V

+5V

9VIN

PO

WD

ET_M

CU

PO

WD

ET_M

PE

G

CTR

_LOAD

CTR

_AUD

IO

PO

WD

ET_M

CU

PO

WD

ET_M

PE

G

CTR

_TFT5V

+5V_TRAN

CTR

_TFT5V

+3.3V+5V

+7.5V_TFT

+5V_TRAN

-10V_TFT

+15V_TFT

+3.3V

+3.3V

+3.3V

+C

1347uF/25V

/LU

C15

0.1uF

C118

0.1uF

+ -

U3A

LM393

3 21

84

C7

100uF/10V/LU

R3

10k(8.2K)

R8

0(1.8K)

R9

3.9K

L220uH

Q2

BS

H1051

32

C1

100uF/6.3V/LU

R15

1.6M

U1

RT9167A

-185CS

1 234

5678

SHD

N-

INO

UT

BP

GNDGNDGNDGND

R6

3.3K

R18

560K

C18

0.1uF

+ -

U3B

LM393

5 67

84

C17

1000pF

D4

1N5819

12

L120uH

Q18

OP

EN

/39041

2 3

C2

0.1uF

C11

22uF/25V/LU

J1

PO

WE

RJA

CK 132

C50.01uF

R11

20K

R158

330O

C10

47uF/25V/LU

CO

N1

BATTERY 21 3 4

VING

ND

OU

TPD

ET

R5

3K

+C

947uF/25V

/LU

U6

BA

05SFP

45

3

21

6 VOU

T

NC

GND

VIN

CTL

GND

R7

3K

+C

16100uF/16V

/LU

R157

OP

EN

/10K

D2

RB

053L-30

12

R159

4.7K/open

R13

20K

R160

4.7k/open

C3

47uF/25V/LU

D3

1N5819

12

C6

100uF/6.3V/LU

R12

220R

C12

0.1uF

U22

RT9262

1

2

3 4

5

6

7

8

GND EXT

LFB

LDO

O

FB

VDD

LX

CE

R4

47K

U5

TER

9.5*100M

1

3

6

57

8

1

3

6

57

8

R16

0R

R10

47K

R14

1M

R17

200K

D5

1N5819

12

C14

0.1uF

zhang_gq


1

1

1

1

Tr-

10

VR GND

GND

C

C8911

BGND

RS

-232

324 619 5

PD

17

VccV1.7

18

B

C

15

Vs(Vc)

LD(DVD)

HOP1200/1200N(1240)

D

16

A

1

14 1

GND(NC)

2

VR F

720

E

12

Vcc

21Fo+

Very Im

portant tored

uce N

oise

22

2SB1132

VRF(1.4V)

23Tr+

HITACHIHOP1200/1200N(1240)

C15 closed to Pin186

PD(Monitor)

LD(CD)

E413

2

Fo-

3

AUDIO INTERFACE

MEMORY

FLASHIIC

VIDEO INTERFACE

DQ

M[0..1]

A[0..21]A

D[0..7]

BA

[0..1]D

Q[0..15]

AS

DA

T[0..2]

Y[3..6]

MA[0..11]

DM

O

V1P

4

XO

XI

DC

KE

CS

#SC

L FS0

PR

D#

SD

A

ASPDIF

AL PC

E#

ALR

CK

PWR

#

UR

ST#

AB

CK

CA

S#

CTR

_TFT5V

VS

CK

VS

DA

PWR

#

MU

TE_D

AC

PC

E#

WE

#

DC

LK

AC

LK

AR

RA

S#

VSYNC

#H

SYNC

#

FMO

D

FOO

TRIN

XO

C

ADIN

B

LIMIT

DM

SO

XI

STB

Y

TRO

V1P4

DM

SO

TRO

UT

AC

DQ

0

AR

DACVDD3

JITFN

DQ

14

OP

O

BA

0

TRSO

MA

1

V20

V18

V1P

4

LDO

2

A4

Y4

TEZISLV

FMO

TRO

PEN

T+

DM

O

JITFN

A17

RFVDD3

DQ

15

DQ

13

VSTB

AD5

SL-

SDA

A15

TEO

SU

BD

V1P

4

RFVDD3

FMS

O

LD-C

D

A

LD-D

VD

A5

XTA

LI

DQ

6

RXD

A10

A1

A13

AD3

DQ

10

MUTE_DAC

B

V1P

4

A7

A16

MD

I1

RFO

PLLVDD3

A2

FS

MA

5

VSDA

UWR#

DQ

11

SCL

MA

4

AV

CC

1

DACVDD3

APLLVDD3

AD4

OP

+

JITFO

MA

3

SL-

V1P

4

ASDAT2

SU

BC

Y5

DQ

3

DQ

9

CA

S#

TXD

MD

I2

OP

-

Y3

AD1

LDO

1

E

PLLV

DD

3

RFV

DD

3

DQ

7

A21

SL+

SP

-

ALR

CK

MA

10

MA

9

RFO

N

PRD#

MD

I2

E

HSYN

C#

IR

AL

FS0

DQ

4

FMS

O

RFV

18

AP

LLVD

D3

V20

LDO

1

V20

RxD

B

VSYNC

#

Y6

F+

A

ASDAT1

V18

MA

6

RFO

P

MA

8

AD6

A12

F-

AV

CC

1

STB

Y

RESET#

TRSO

CS

#

SU

BA

SP

-

DQ

2

BA

1

AD7

A11

A9

RFV

DD

3

DQ

8

VSCK

ALE

PWR#

V2P

8

SP

+

OP

O

RGB_SWITCH

ADIN

F

FOS

O

FOO

SL+

TRO

DQ

1

FOS

O

LIMIT

DC

LK

D

AC

LK

INT0#

RFVDD3

RFO

DQ

5

URST#

URD#

V2P

8

A6 O

P+

V1P

4

FEO

ASPDIF

A14

V1P

4

DACVDD3

ADACVDD3

DC

KE

AD

AC

VD

D3

A19

XTALI

MA

11

VR

EF

A18

MA

2

ASDAT0

SP

+

F

A8

AD0

A3

SU

BB

RFV18

DQ

M1

MA

7

A20

DQ

M0

TRCLOSE

OP

-

DQ

12

WE

#

MA

0

T-

ALRCK

RA

S#

AD2

PCE#

ICE

AB

CK

A0

D

LDO

2

TxD

C

JITFO

MD

I1

RFV

33

TRIN

TRC

LOSE

TRO

UT

CTR

_5VTR

OPEN

INT/EXT

INT/EXT

IR

AC

LK

AS

DA

TA3

MC

_DATA

AS

DA

TA2

RESET#

GN

D

AB

CK

AS

DA

TA2

VS

CK

VSTBV

SD

A

LDO

_AV

33

RFV

33+3.3V

DV

33

+3.3V

DA

CV

DD

3

GN

D

GN

D

VS

DA

AC

LK[5]

PWR

#[3]

UR

ST#[1]

PC

E#

[3]

CA

S#

[3]

MA[0..11]

[3]

FS0

[4]

AB

CK

[5]

CTR

_TFT5V[5]

A[0..21][3]

MU

TE_D

AC

[5]

PWR

#[3]

SD

A[3]

AD

[0..7][3]

BA

[0..1][3]

DQ

M[0..1]

[3]

ALR

CK

[5]

PR

D#

[3]

AR

[5]

PC

E#

[3]

DC

LK[3]

WE

#[3]

Y[3..6][ 5 ]

ASPDIF

[4]

CS

#[3]

RA

S#

[3]

DC

KE

[3]

VS

CK

AL

[5]

AS

DA

T[0..2][5]

SC

L[3]

AV

CC

[1 ]

DQ

[0..15][3]

HSYN

C#

[ 4 ]VSYN

C#

[ 4 ]

INT/EXT

[5]

VC

CM

O_V

CC

LDO

_AV

33

DV

33

+3.3V

RFV

33

V18

MO

_VC

C

V18

AD

AC

VD

D3

MO

_VC

C

V18

V18

V18

AV

CC

+3.3V

VC

C

RFV

33

LDO

_AV

33

V33

DV

33

DV

33

DV

33

+3.3V

DV

33

DV

33

DV

33

+3.3V

DV

33

AV

CC

VC

C

TP6

TP23

TP12

C77 0.1uF

L34FB

C82 0.47uF/N.C

C105C

TP15

R200

33k

L41

FB

CB

86

0.1uF

TP43

TP32

C100

1uF

+C

E56

47uF/16v

TP13

R197

4.7

R190

10k

C8

+c88=17nf0603C

+C

19

47uF

L51

FB

CB

90

0.1uF

TP39

TP16

C114

1000p

CB

75

0.1uF

L52

FB

+C

E46

10uF/25v

R191

1k0603R

R194

0

+C

E49

1000uF/10v

CB

79

0.1uF

CB

1070.1uF

CB

88

0.1uF

CB

1080.1uF

C98

1uFC

971uF

R202

10k

TP33

+C

E78

220uF/16V

TP31

C841000pF

R178 0

CB

83

0.1uF

+C

E77

220uF/16V

R181

1

L422.7u, D

IP

TP30

C75

0.01uF

CB

92

0.1uF

TP44

C72

2200pF

CB

74

0.1uF

R173

150k

R196

10

R182

2K

TP9

CB

70

0.1uF

TP5

+C

E54

100uF/16v

TP19

R215

10k

C940.1uF

C81

1500pF0603C

R199

33k

R172

150kTP8

TP3

+

CE

5547uF/16v

+C

E52

47uF/16v

TP14

C110

0.015uF

+C

E1

+ce49=1000uf

R218

100k

TP47

CB

73

0.1uF

R28

4.7K

CO

N2

CO

NTR

OLBO

RD

,11P,PITCH

=1.5MM

1234567891011

1234567891011

TP40

Y1C

27MH

z1

2

+

C79

10uF/25v

TP52

TP18

C104

0.1uF

L50

FB

TP37

R177

R

D6

1N4148

1 2

R23

100k

TP29

R179 0

C71

390pF

R192

R

R204

1

C112

150pF

+C

E53

47uF/16v

TP45

R183

4.7k

R210

10k

TP38

R193

R

C109

0.1uF

CB

85

0.1uF

U38

BA

5954

1 9 10 1232

15

7 1413

21 19202427

64 5

28

8 111718 1623 222526

2930

VINFC

PV

CC

1PG

ND

VO

SL+

CF2

CF1

VO

TK+

VN

FFC

VO

FC+

VO

FC-

PV

CC

2

PGN

DVN

FTK

CTK

2

BIAS

VO

SL

VINSL+

VINSL-

STB

Y

VC

C

VO

SL-

VO

LD+

VO

LD-

VO

TK-

VINLD

PREG

ND

CTK

1VIN

TK

G1

G2

CB

89

0.1uF

R211

20k

C73

0.1uF/N.C

C101

1uF

R174

680k

TP27

R22

39k

CB

200

0.1uF

TP21

R212

20k

R203

1

R210

CB

76

0.1uF

TP42

+C

E47

10uF/25v

CB

81

0.1uF

IR1321

C102

C

Q262S

B1132

1

32

R168

680k

R187

0

+C

E16

100uF/6.3V/LU

C108

330pF

CB

77

0.1uF

TP17

CB

780.1uF

L37

FB

CB

93

0.1uF

C111

150pF

C33

100pF

R175 15k

TP1U

RST#

C90 0.033uF

L3610uH3216

L39

10uH

TP2

CB

82

0.1uF

CB

72

0.1uF

R195

10

R206

1

C95

0.1uF

R220

0

U20A

74HC

04

12

147

L38FB

CB

87

0.1uF

L40

10uHR

1984.7

CB

95

0.1uF

C99

1uF

C91 0.047uF

CB

91

0.1uF

R170 100k

TP4

C116

22p

R205

1

TP49

MT1389D

U17

MT1389D

UQ

216

2

210

345 1

212213

67891011121314151617181920212223

216

28 2730 2932 3143 26 253334353642 4145 394046 38 37

6564

6261605958

52

81

7776

55

74737271

63

83

5354

70

57

82

75

66

68

80

69

56

67

848586878889909192939495

106

9697

204205

9899100101102103104105

107108

162161160159158157156155154153152151150149148147146145144143142141140139

137138

136135134133132131130129128

126127

125124123122121120

118119

117116115114113

111112

110109

209

215

24

214

191190

198197

208207

196

211

206

203

201202

200199

194195

192

184185

182181180179

186

178177

175

173174

164

171170169168

172

167166165

163

193

444748495051

7879

176

183

188189

187

DV

DA

CRTPLP

DV

DB

DV

DC

DV

DD

AGN

D

OSPOSN

DVD

RFIP

DVD

RFIN

MA

MB

MC

MD

SA

SB

SC

SD

CD

FON

CD

FOP

TNI

TPI

MD

I1M

DI2

LDO

2LD

O1

AVDD3

V2R

EFO

SGN

D

VR

EFO

V20

TEO

FEO

FG/AD

IN1

RFLVL/R

FON

CSO

/RFO

P

TEZISLVO

P_OU

TO

P_INN

OP_IN

P

FOO

TRO

GPIO

1

TRO

PENPW

MPW

MO

UT1/AD

IN0

GPIO

2

FMO

DM

O

HIGHA4HIGHA5

HIGHA7DVDD3A16IOWR#DVDD3

IOA6

AD6

AD2AD1

IOA18

DVSSIOOE#IOA1DVSS

HIGHA6

ALE

IOA7

HIG

HA0

IOCS#

IOA19

IOA21

AD0

HIGHA3

HIGHA1

AD5

IOA20

DVSS

HIGHA2

DVDD18AD7A17DVDD3IOA0UWR#URD#UP1_2UP1_3GPIO6UP1_4UP1_5

IR

UP1_6DVSS

ADCVDD3ADCVSS

UP1_7UP3_0UP3_1UP3_4UP3_5GPIO7ICEPRST#

INT0#DVDD3

AC

LKA

BC

KD

VS

SG

PIO5

GPIO

4G

PIO3

DV

DD

18R

A4R

A5R

A6R

A7D

VD

D3

RA8

RA9

RA

11C

KE

RC

LKD

VS

SR

A3D

VS

SR

A2R

A1R

A0R

A10

BA

1D

VD

D3

BA

0R

CS

#R

AS

#D

VD

D18

CA

S#

RW

E#D

VS

SD

QM

1R

D8

RD

10R

D9

RD

11R

D12

DV

DD

3R

D13

RD

14D

VS

S

RD

0R

D15

RD

1R

D2

DV

SS

RD

3R

D4

RD

6R

D5

RD

7D

QM

0

HRFZC

IREF

SV

DD

3

RFGC

RFGND18ADACGND

IDACEXLPPLLVSS

RFRPACRFRPDC

JITFN

RFGND

RFVDD3

LPFOP

LPFIPLPFIN

LPFONPLLVDD3

XTALIJITFO

RFVDD18

APLLCAPAPLLVSS

RB

DACVSSAG

ADACVDD3

DACVDDADACVSSB

CVBS

FSDACVSSC

ASDATA0

DACVDDCSPDIF

MC_DATADVDD3

VREF

ASDATA3ASDATA2ASDATA1

ALRCK

XTALO

GPIO

0

IOA2

DV

DD

18IO

A3IO

A4IO

A5

AD3AD4

DACVDDB

APLLVDD3

VCMAL

AR

R201

15k

R188

0

+C

E100

220uF/16V

C93

0.1uF

C80

10uF/10v

R185

10k

TP25

+C

E58

47uF/16v

C103

1uF

TP41

C83

2200pF

R176

6.8

R169

0

R72

10K

CB

80

0.1uF

TP22

C7820pF

C106

0.1uF

TOP

HA1

HEAD

ER 24 SM

D0.5 TO

P

123456789101112131415161718192021222324

SW

1PU

SHBU

TTON

1 4

2 3

CB

71

0.1uF

R167

0

C87 0.1uF

C92 0.047uF

+C

E51

47uF/16v

R217

R

R19

0

U20B

74HC

04

34

147

TP51

L33

FBR

166750k

K1

POW

ERO

N/O

FF

231

J66x1 W/H

OU

SING

_180

123456

TP34

J8

4x1 W/H

OU

SING

1234

TP24

TP50

R155

10K

C107

330pF

C115

C

TP26

C74

0.1uF

C76

2200pF

TP11

SW

2

TFT_SWITC

H

1 4

2 3

TP35

R189

0

TP10

CB

84

0.1uF

R69

10K

C89 0.1uF

TP20

TP46

L4FB

+C

E48

100uF/16v

C88

16800PF

0603C

Q252S

B1132

1

3 2

R20

0

TP48

L3FB

C117

22p

TP28

R209

20k

- 7 -

(3) SERVO&MPEG

zhang_gq


- 8 -

(4) SDRAM&FLASH&EEPROM

TSOP 48 pin

IIC DRAM

FLASH

16Mb

32Mb

8M 16M 32M FLASH

delete

DQ

[0..15]

AD

[0..7]

BA

[0..1]D

QM

[0..1]

MA

[0..11]

A[0..21]

A9 A3A

D3

A1A19

A4

AD

6

AD

1

A17

A16

A13

A14

AD

0A2A6A8A

18

AD

7A7

AD

5

A12

A15

A10

AD

2

AD

4

A11

A5

A0

RA

S#

PC

E#

CA

S#

PR

D#

DC

KE

SD

A DC

LK

SC

L

PW

R#

CS

#W

E#

DC

S#

DC

AS

#D

RA

S#

DW

E#

WE

#

RA

S#

CS

#

CA

S#

BA

0

DC

KE

BA

1

DC

LK

SD

CK

E

DB

A0

DB

A1

SD

CLK

A20

AA

20

PC

E#

PR

D#

PW

R# AA

20A

A21

SC

LS

DA

VC

C DV

33

DQ

9

MA7

MA3

MA9

DC

S#

DQ

0

DQ

12

MA8

MA4

MA0

DW

E#

DQ

11

DQ

M0

DQ

4

DQ

13

DB

A0

MA5

DQ

1

DC

AS

#

DQ

5M

A2D

Q6

DQ

8

DQ

14D

Q15

SD

CK

E

DQ

7

DQ

2

MA1

MA10

DQ

M1

DQ

3

SD

CLK

DR

AS

#

MA6

DQ

10DQ

0M

A6

DC

AS

#

DQ

5

SD

CLK

DQ

10

DR

AS

#

DB

A0

DW

E#

DQ

1

MA9

MA4

DB

A1

DQ

7M

A1M

A2

DQ

M0

DQ

M1

MA10

DQ

6

DQ

11

DQ

15

MA7

DC

S#

DQ

13

DQ

8

SD

CK

E

DQ

4

DQ

14

DQ

2D

Q3

MA3

MA5

MA0

DQ

9M

A8

MA11

DQ

12

AA

21A

21

DQ

6

SD

CK

E

DQ

1

DQ

15

DQ

9

DQ

M0

MA5

DB

A0

DQ

0

DQ

10

DQ

M1

DC

AS

#

DQ

11

DQ

8

MA4

DQ

14

MA8

DR

AS

#

DW

E#

DQ

3

DB

A1

DQ

7

GN

D

MA2

DQ

2

MA7

MA1

SD

33

MA3

DQ

13S

DC

LK

DQ

5

DQ

12

MA6

MA0

MA9

MA10

DQ

4

SD

A[ 2 ]

DQ

M[0..1]

[ 2 ]B

A[0..1]

[ 2 ]

WE

#[ 2 ]

PC

E#

[ 2 ]

CA

S#

[ 2 ]

AD

[0..7][ 2 ]

CS

#[ 2 ]

DC

KE

[ 2 ]

PR

D#

[ 2 ]

SC

L[ 2 ]

DC

LK[ 2 ]

PW

R#

[ 2 ]

MA

[0..11][ 2 ]

DQ

[0..15][ 2 ]

RA

S#

[ 2 ]

A[0..21]

[ 2 ]

VC

C[ 1 ]

GN

D[ 1,2,3,4,5 ]

DV

33[ 1 ]

SD

33

DV

33S

D33

SD

33

SD

33FLA

SH

_VC

C

FLAS

H_V

CC

FLAS

H_V

CC

SD

33

VC

C

FLAS

H_V

CC

DV

33

SD

33

SD

33

SD

33

SD

33

SD

33

SD

33

R68

680

CB

38

0.1uF

L23FB

CB

52

0.1uF

CB

42

0.1uF

R64

33

CB

45

0.1uF

L24N

O_U

SE

R66

33

CB

50

0.1uF

R254

680

U8ES

MT M

12L16161A-7 1 234 567 8910 11121314 15 16 17 18 19 20 21222324

25

26 27282930313233 34 353637

38 394041 424344 454647 4849

50

VC

C

DQ

0D

Q1

VS

SQ

DQ

2D

Q3

VC

CQ

DQ

4D

Q5

VS

SQ

DQ

6D

Q7

VC

CQ

DQ

ML

WE

CA

SR

AS

CS

BA

/A11

A10

A0

A1

A2

A3

VC

C

VS

S

A4

A5

A6

A7

A8

A9

NC

CK

EC

LK

DQ

MH

NC

VC

CQ

DQ

8D

Q9

VS

SQ

DQ

10D

Q11

VC

CQ

DQ

12D

Q13

VS

SQ

DQ

14D

Q15

VS

S

CB

54

0.1uF

CB

37

0.1uF

CB

41

0.1uF

U9ES

MT M

12L64164A/N.C

TSOP54

1 2412 579 81046 1113

15 16 17 18 19 35 22 23242526

14

41 29303132333436 37 383940

43 424452 454749 48505153

54 2021

36 27

28

VC

C

DQ

0D

Q1

VS

SQ

DQ

2D

Q3

VC

CQ

DQ

4D

Q5

VS

SQ

DQ

6D

Q7

DQ

ML

WE

CA

SR

AS

CS

A11

A10/A

P

A0

A1

A2

A3

VC

C

VS

S

A4

A5

A6

A7

A8

A9

NC

CK

EC

LK

DQ

MH

NC

VC

CQ

DQ

8D

Q9

VS

SQ

DQ

10D

Q11

VC

CQ

DQ

12D

Q13

DQ

14D

Q15

VS

S

BA

0/A13

BA

1/A12

VC

CQ

VS

SQ

VC

C

VS

S

R67

10k

CB

49

0.1uF

RN

1

33x4

12

34

56

78

+C

E23

220uF/16V

CB

48

0.1uF

R62

R

CB

36

0.1uF+

CE

22

220uF/16V

CB

40

0.1uF

U12

EE

PR

OM

24C16

SO

P-8

12345 6 7 8

NC

NC

NC

GN

DS

DA

SC

LW

PV

CC

CB

44

0.1uF

CB

53

0.1uF

CB

47

0.1uF

U7ES

MT M

12L16161A-7 1 234 567 8910 11121314 15 16 17 18 19 20 21222324

25

26 27282930313233 34 353637

38 394041 424344 454647 4849

50

VC

C

DQ

0D

Q1

VS

SQ

DQ

2D

Q3

VC

CQ

DQ

4D

Q5

VS

SQ

DQ

6D

Q7

VC

CQ

DQ

ML

WE

CA

SR

AS

CS

BA

/A11

A10

A0

A1

A2

A3

VC

C

VS

S

A4

A5

A6

A7

A8

A9

NC

CK

EC

LK

DQ

MH

NC

VC

CQ

DQ

8D

Q9

VS

SQ

DQ

10D

Q11

VC

CQ

DQ

12D

Q13

VS

SQ

DQ

14D

Q15

VS

S

L25FB

CB

51

0.1uF

CB

39

0.1uF

U11

STM

29W160/M

X29LV800(160)

252423222120191881028

4716

29313335

726

38404244303214 3639414345372711 9

3446

64 5321481712

A0

A1

A2

A3

A4

A5

A6

A7

A8

A20

OE

BY

TEA

18

D0

D1

D2

D3

A9

CE

D4

D5

D6

D7

D8

D9

WP

/AC

C

D11

D12

D13

D14

D15

VC

C

GN

D1

WE

A19

D10

GN

D2

A10

A12

A11

A13

A14

A15

A16

A17

RE

SE

T

R70

10k

CB

43

0.1uF

+C

E24

47uF/16V

CB

46

0.1uF

R65

33

R63

33

R61

R+

CE

25

47uF/16V

zhang_gq


- 9 -

(5) VIDEO OUTPUT

1

1

TFT I/O

2N3904 3

C

E

2

B1

TFT_CVBS

-10V_TFT

9VIN

+3.3V_TFT

+7.5V_TFT

+15V_TFT

+5V_TFT

ASPDIF

Y[3..6]

CVBS_TFT

VIDEO

_TV

INT/EXT

P/N

ASPDIF

+5V_TRAN

TFT_OU

TTFT_C

VBS

SV

IDE

O_Y

SVIDEO

_C

SC

ALE

VIDEO

_TV

TFT_OU

T

CVBS_TFT

CVBS_O

UT

P/N

SC

ALE

+5V_TRAN

+5V_TFT

+5V

Y3

Y4 Y5

CVBS_O

UT

Y6

CVBS_O

UT

+15V_TFT

9VIN

+5V_TFT

-10V_TFT

+7.5V_TFT

+3.3V_TFT

ASPDIF

Y[3..6]

INT/EXT

P/NSC

ALE

TFT_OU

T

CVBS_TFT

CVBS_O

UT

+5V_TRAN

+5V_TFT

+5V

+5V

+5V

F2FB

C132

330pF

F1FB

C131

0.1uF

F4FB

F5FB

F6FB

F7FB

F8FB

F9FB

R154

100R

F11FB

F12FB

L221.8uH

L430

L181.8uH

R146

150R

C43

47pF

L451.8uH

R149

150R

C44

47pF

L440

J10

VIDEO

/CO

AXIAL

5 4 23 1

GN

DG

ND

VIDEO

CO

AXIAL

VIDEO

C129

OPEN

C46

270pF

C130

330pF-OP

EN

C45

270pF

F10FB

CO

N4

109874321 5 6 11 12

13

VIDEO

NTSC

/PAL

GN

D

-10V_TFT

+5V_TFT

+7.5V_TFT

+15V_TFT

HVG

ND

+3.3V

+9VP

OW

ER

VGN

D

MO

DE

SC

ALE

C51

47pF

R151

150R

C124

330pF-OP

EN

Q17

39041

2 3

F3FB

C48

47pF

C128

47pF

R150

4.7K

R152

75R

C122

47pF

C49

47pF

R148

4.7KL21

1.8uH

Q16

39041

2 3

C113

47pF

R145

4.7KJ7

S_VIDEO

5 4 23 1

GN

DG

ND

S_Y

S_C

S_Y

L192.7uH

L202.7uH

R147

4.7K

C133

270pF

+

C126

330uF/6.3V

C123

OPEN

C134

470pF

C127

0.1uF

F13FB

R153

100R

zhang_gq


- 10 -

(6) AUDIO OUTPUT

1

11

VR

EF5V

VC

CA

UD

VR

EF5V

VR

EF5V

A_IN/O

UTR

A_IN/O

UTL

AC

LK

MU

TE_D

AC

ALR

CK

AC

LK

AB

CK

ASDAT0

SDAT0

SA

CLK

SLR

CK

ALR

CK

SB

CLK

AB

CK

ASDAT0

DA

C_M

L

SA

CLK

SB

CLK

A_A

VD

D

SLR

CK

DA

C_M

R

SDAT0

+3.3V

A_IN/O

UTL AO

UT_R

VC

C

INT/EXT

A_MU

TE

SHU

TDO

WN

CV

BS

_TFTTFT_O

UT

CVBS_O

UT

CV

BS

_TFT

TFT_OU

T

CVBS_O

UT

A_R

_SP

EA

KE

R

A_L_S

PE

AK

ER

AOU

T_L

AOU

T_R

A_MU

TE

A_IN/O

UTR

A_R

_SP

EA

KE

R

A_L_S

PE

AK

ER

VC

C_A

UD

A_R

_SP

EA

KE

R

SHU

TDO

WN

PHONE_ON

A_L_S

PE

AK

ER

AOU

T_L

SHU

TDO

WN

AL

AR

RO

UT+

LOU

T+LO

UT-

RO

UT-

VC

CA

UD

MU

TE_IN

MU

TE_D

AC

AC

LK

ASDAT0

ALR

CK

AB

CK

MU

TE_D

AC

VC

C

+3.3V

INT/EXT

MU

TE_IN

CV

BS

_TFT

TFT_OU

T

CVBS_O

UT

SHU

TDO

WN

VC

C

VC

C

VC

C_A

UD

VC

C

A_A

VD

D

+5V

+3.3V

+3.3V

VC

C_A

UD

C291uF

C41

470pF

C42

470pF

U27

CS

4344-OP

EN

123456 7 8 9 10

SDATA

DE

M/S

CLK

LRC

K

MC

LK

VQ

FILT+

AOU

TL

GN

D VA

AOU

TR

R98

47R

R88

10K

Q15

39041

2 3

Q13

39041

2 3

R100

10K

Q11

39061

23

+C63

220uF/6.3v

+

C61

10uF/16V

R134

open

R119

1K

R115

470R

CO

N3

SP

EA

KE

R

4 3 12

LOU

T-LO

UT+

RO

UT+

RO

UT-

R132

22K

R130

0R

D8

1N4148

1 2

C64

1000pF

D7

1N4148

12

R101

5.1K

+C26

10uF/6.3V

R118

3.3K

R110

1K/5k

R95

0R

D9

1N4148

12

R113

1K/5k

R133

470R

R129

200K

Q12

39041

2 3

J5

PH

ON

EJA

CK

234561

+C

2047uF/10V

+C

40100uF/6.3V

R97

15K

R140

4.7K

+C

37

47uF/10V

+C

38100uF/6.3V

R102

10K

L13

10uH

R135

200K

+C

39100uF/6.3V

C62

0.1uF

C59

220pF

C1822.2uF

+C

35

47uF/10V

Q14

90141

2 3

R127

4.7K

R120

1K

J4

VO

LUM

E 10K

12345

12345

R93

100K/?

C34

0.1uF

R117

open

R131

0R

R1441K

R123

4.7K

R103

100K/?

U19

TPA

6011

12345678910111213 14 15 16 17 18 19 20 21 22 23 24

GN

D

RO

UT-

PV

DD

RH

PIN

RLIN

EIN

RIN

VD

D

LIN

LLINEIN

LHPIN

PV

DD

LOU

T-G

ND

LOU

T+

SHU

TDO

WN

FAD

E

BY

BA

SS

GN

D

SE

MA

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SE

DIFF

VOLU

ME

HP/LIN

E

SE/BTL

RO

UT+

Q10

85501

23

C32680pF

R116

1k

+

C60

10uF/16V

+C27

10uF/6.3

C21

0.1uF

R111

560R

R122

3.9k

R99

1.8K

L1622uH

R143

4.7K

Q8

39041

2 3

C58

0.1uF

C55

1000pF

C57

0.1uF

R141

4.7K

R94

560R

C31680pF

R114

3.3K

R138

4.7K

R109

4.7K

C86680pF

Q9

39041

23

C301uF

R136

560R

C85680pF

U21

F_TB3GA4.5Z

1

2345

67

8 +

2345

67

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L1722uH

U16

CS

4334-OP

EN

12345 6 7 8

SDATA

DE

M/S

CLK

LRC

K

MC

LKAO

UTR

AGN

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AOU

TL

R89

5.1K

+

C67

10uF/6.3V

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U15A

MC

33202D

3 21

8 4+ -

U15B

MC

33202D

5 67

8 4

RN

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33x4

12

34

56

78

R85

15K

+

C24

10uF/6.3V

R92

10K

R137

4.7K

C52

220pF

R96

560R

R104

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C36

2.2uF/6.3V

R142

3K

J9

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5 4 23 1

GN

DG

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IOL

AUD

IOR

AUD

IOL

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C53

10uF/16V

L15

220uH

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C28

2.2uF/6.3V

+

C54

10uF/16V

L14

10uH

R139

open

R90

1.8K

U23

F_TB3GA4.5Z

1

2345

67

8 +

2345

67

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5647uF/10V

zhang_gq


- 11 -

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 Voltage8.4~6.0V Cut-off Voltage5.7~6.0V Charge voltageThe battery pack should be charged when the input voltage is from11V to 15V Chargera.) Hiteker DC12V/2.0A adaptor.

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 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/2.0A adaptor or

Hiteker DC12V/2.0A 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.

- 12 -

The battery pack shall return to normal operation only after the fault has 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)

DVD Title Play Time (hr)

Styling

Ni-MH 2400mAh (6S1P)

4~5 2.5

For DPC-7900 Series

- 13 -

4 Dimension & Physical Characteristics

4.1 Outline Dimension

205mm(L) x 163.5mm(W) x 38mm(H)

4.2 Physical Characteristics

1

2

345678

9

10

1112

1314

15 15

1.LCD SCREEN3.DISC MENU5.TV MODE7.SUB TITLE9.PAUSE11.ENTER13.SETUP15.SPEAKERS

2.TFT ON/OFF KNOB4.PREV6.NEXT8.PLAY10.STOP12.DIRECTION BUTTONS/FR,FF14.OPEN/PUSH

- 14 -

4.3 Exploded View

4.3.1 DVD Door & Mainbody_top module

zhang_gq

线条

zhang_gq

线条

- 15 -

4.3 Exploded View

4.3.2 Keyboard & Mainbody_top module

- 16 -

4.3 Exploded View

4.3.3 Mecha & Mainbody_bottom module

- 17-

4.3 Exploded View

4.3.4 Mainbody module

- 18 -

4.3 Exploded View

4.3.5 Display module & Mainbody module

- 19 -

5 Regulatory Standards

5.1 Safety

UL FDA

5.2 EMI

CE FCC

5.3 Ergonomics

Dolby

- 15 -

LVD

- 20 -

6 Service Tools and Equipment

6.1Service Tools and Equipment Table

Application Name

DVD Testing Disc General

General Tools screwdriver etc.

CD Testing Disc Confirm

VCD Testing Disc

Oscillograph

Probes

AV Cables

Adjust

TV Monitor

Searing-iron

Antistatic wrist strap

Grounding for electrostatic breakdown

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.

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.

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 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

- 21 -

- 22-

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. Please turn on power and

wait about an hour for drying the moisture.

- 23 -

7 Spare Parts

7.1 Key Parts List

Location Part NO Part Name Description Maker Remark

GKB2.855.8105MX MEPG Board Hiteker W/O DivX

GKB2.855.8138MX Main Board

MEPG Board(With DivX) Hiteker With DivX

U17 MT1389QE_D MTK1389D MTK W/O DivX

U11 ICMT1389DE-C MPEG IC

MTK1389C MTK With DivX

U11 AT49LV4096AT-70TC 4M Memory ATMEL W/O DivX

U14 ICMX26LV800BTC-70

FLASH Memory IC 8M Memory FUJITSU With DivX

U7 IC42S16100-7T SDRAM IC ISSI W/O DivX

U13 IS42S16400-7T SDRAM IC

SDRAM IC ISSI With DivX

U38 ICBA5954FP DRIVE IC ROHM W/O DivX

U12 ICBA5954FP

MOTOR DRIVE IC DRIVE IC ROHM With DivX

U12 IC24C02 EEPROM IC ATMEL W/O DivX

U15 IC24C02 EEPROM IC

EEPROM IC ATMEL With DivX

UM1/2 MP1580 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 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 HX8806 TCON IC TCON IC HIMAX For All

U1 IR3Y29B VIDEO Decode IC VIDEO Decode IC SHARP For All

DM-520A Loader DVD Player Foryou For All

HOP-1200W Pick up Pick up HITACH For All

CCM03-030R1-49 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 Rechargeable Battery Ni-MH2400mAh Rebenergy For All

GKB2.930.8015 AC/DC Adapter DC 12V 2.7A SiDa For All

GKB2.018.8072WX Remote Control Remote Control FeiDa For All

- 24 -

8 Trouble Shooting

8.1 Error Code Table

CODE Descriptions of Error Note

Power Test

T01 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

T05 System stays in the Run In condition after power on, can’t be tested

T06 System down at power on

T07 System down during playing

T08 Power on unstable

T09 Abnormal sound in the system

Disc Drive Test

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)

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 (Please indicate the abnormal condition)

T23 S-Video No video / abnormal or black & 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)

Audio Test

T31 Audio / left sound channel (AOL) does not have waveform (sound) or waveform (sound) abnormal

T32 Audio / right sound channel (AOR) does not have waveform (sound) or waveform (sound) abnormal

- 25-

T33 MP3 abnormal sound

T34 Audio no waveform (sound) or waveform (sound) abnormal

Earphone Test

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

Function Key Test

T51 Video can’t be still or stop

T52 Can’t execute fast forward or rewind

T53 Panel button

System Setting Test

T61 Can’t enter the system setting

T62 The system can not be played or it is down after the system is set

TFT Test

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

6.2 Debug & Trouble Shooting

CB for any missing components and bad soldering T01No Power

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. If none of the above actions is effective, please change Main Board.

T02Power LED indicator not on or insufficient brightness

Main Board A. Open the cover of the portable DVD-player to inspect if LED functions normally.

T75 TFT ripple

张国强

B. Measure the base electrode of Q1 to see if the voltage is high_and the emitter of

张国强

Q1 must be high voltage.Q1 is a NPN 3904 type transistor. If it is abnormal ,

- 26 -

Please replace with a good one.

C. Disassemble F/W, replace with a good one or re-plug it to see if the LED lights up when Power ON.

D. If the above actions are not working, replace the Main Board.

T03Loading time too long

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.

T04Remote control bad sensing or not functional

Remote control

C. If the above actions are not working, replace the Main Board.

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. Main Board

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 not working, replace the Main Board. T05Stay in the Run In condition after power on, can’t be tested

Main Board A. The same refer to T03.B. If the above actions are not working, replace the Main Board.

T06System down at power on

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 R5 or pull it to

low voltage with a lead.

C. If the above actions are not working, replace the Main Board. T07System down during play

Main Board A. Exclude the condition of using battery. (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.

- 27 -

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. If the 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 A. 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. T08Power on unstable

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 LDO Q3 to see if it works normally with a 1.8V output voltage.

C. Check the reset circuit refer to the title T07-D.

D. If the above actions are not working, replace the Main Board. T09Abnormal 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. If the abnormal sound comes from the audio speakers, check the audion PNP3906

T11Disc drive can’t read (NO DISC)

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.

type Q16 and NPN 3904 type Q8/9/10/12/13/15 to confirm the mute circuit works

normally. If not ,change the audion.

C. If the 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.

T12Disc drive no action or locked

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. If the above actions are not working, replace the loader. If it is still not working,

- 28 -

replace the main board. T13Disc drive scratches disc

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. If the 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. T14Not every disc can be played

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. If the above actions are not working, replace the loader. If it is still not working, replace the main board.

T15Head does not work

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.



T16Spindle does not work.

Main Board A. Remove the top cover, check the 4-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 capacitors adjacent to IC(U17) to see if there is any hollow

soldering, cold soldering, wrong part, or misplaced soldering.



T21No video / abnormal


- 29 -


B. 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.

C. Check if U17(F/W) IC has any problem.

D. Check if switch for TFT on/off is normal; replace a new one if necessary. E. If the above actions are not working, replace the Main Board.

Driver Board

B. Adjust VR4,VR6,VR1,VR7,VR5 to the appropriate value.

A. Check VR6,VR4,VR1,VR7,VR5 is using the correct component. Also check if it’s damaged.

DVD ROM (less likely to happen) A. If it is useless to change the main board, then replace the loader.

T22Video no video / abnormal

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. B. 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. C. 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. D. If the above actions do not work, then check U17Pin175 and Pin182 to see if

there is CVBS signals.

E. If the above actions are not working, replace the Main Board.

T23S-Video no video / abnormal or black & white

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.

B. 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.

C. 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.

- 30-

D. If the above actions do not work, then check U17 Pin179 and Pin181 to see

if there is Y and C signals.

E. If the above actions are not working, replace the Main Board.

T24VCD abnormal picture

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 adjacent to IC(U17) to see if there is any

hollow soldering, cold soldering, wrong part, or misplaced soldering.


DVD ROM A. If 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.

T25DVD 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 adjacent to IC(U17) to see if there is any

hollow soldering, cold soldering, wrong part, or misplaced soldering.


DVD ROM A. If 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.

T26Picture subtitle abnormal display or no display

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 U17 to see if there is any cold or hollow soldering and short circuit

problem and rule out the problem. C. If the above actions are not working, replace the Main Board.

T27Setting menu abnormal picture

Main Board A. Check U17 to see if there is any cold or hollow soldering and rule out the problem.

- 31 -

B. Remove and dis-assemble U7 with a 16Mbit SDRAM.

C. If the above actions are not working, replace the Main Board. T31Audio /left channel (AOL) no sound or abnormal sound

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. If the above actions are not working, replace the Main Board. T32Audio /right channel (AOR) no sound or abnormal sound

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. If the above actions are not working, replace the Main Board. T33MP3 abnormal sound


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 or cold soldering.

C. If the above actions are not working, replace the main board. If it is still not working, replace the loader.

T34Audio no waveform (sound) or waveform (sound) abnormal

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. If the above actions are not working, replace the Main Board. T41Earphone Audio no waveform (sound) or waveform (sound) abnormal



- 32 -

B. Check U19,U15 and J4,CON3 to see if there is any cold or hollow soldering

and rule out the problem. C. If the above action does not work after the inspection, replace the main board.

T42Earphone Audio right no waveform (sound) or waveform (sound ) abnormal

Main Board A. Check U19,U15 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. If the above action does not work after the inspection, replace the main board. T43Earphone Audio left no waveform (sound) or waveform (sound) abnormal

Main Board A. Check U19,U15 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. If the above action does not work after the inspection, replace the main board.

T51Video can’t be still or stopped

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.

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. If the above actions are not working, replace the Main Board.

T52Can’t execute fast forward or rewind

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. 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). T53Panel button

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. If the above actions do not work after the inspection, check the 11pin cable to see if there is any damage.

C. If the above actions are not working, Replace the control board or the main board.

T61Can’t enter the system setting

- 33 -

Main Board A. Check U17 to see if there is any cold or hollow soldering and reverse soldering

of IC or parts missing. B. If the above actions do not work after the inspection, it means the main board or

F/W is bad. C. If the disk is abnormal, ask for a new version software .

T62System can’t play or system down after setting

Main Board A. Check U17 to see if there is any cold or hollow soldering and reverse soldering

of IC or parts missing. B. 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). T71TFT image and color error

Main Board A. Check the 11-pin cable connected to the driver board to see if there is any

problem of plugging. Rule out the problem. B. Check devices after Y/C signal to see if there is any cold or hollow soldering

and reverse soldering 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.

Driver Board A. Measure the voltages of VGH,VGE,VCC,VDD,VIN and VSS to see if they are

correct. B. Check VC1 to see if there is any cold or hollow soldering and reverse soldering

of IC or parts missing. C. Check Y1,Y2 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 Driver Board.

T72TFT image is black and white





Driver Board

- 34 -

A. Measure the voltages of VGH,VGE,VCC,VDD,VIN and VSS to see if they are


of IC or parts missing. C. 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. D. Check Y1,Y2 to see if there is any cold or hollow soldering and reverse soldering

of IC or parts missing. E. If the above actions are not working, replace the Driver Board.

T73TFT image shakes or is distorted









of IC or parts missing. E. If the above actions are not working, replace the Driver Board.

T74TFT PAL color strip





- 35 -

of IC or parts missing. E. Check Pin 1 to Pin 16 on U202 for any cold or hollow soldering and reverse

soldering of IC or parts missing. F. If the above actions are not working, replace the Driver Board.

T75TFT ripple

Main Board A. Check the 13-pin cables connected to the driver board to see if there is any

problem of plugging. Rule out the problem. B. Check the 3-pin cable connected to the high-voltage board to see if there is

any problem of plugging. Rule out the problem. C. If the 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. 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 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. If the above actions are not working, replace the inverter board.

Panel A. Check the sharing cable connected to the high-voltage board to see if there is

any problem of plugging. Rule out the problem. B. Check the high-voltage cable connected to the panel to see if there is any

problem of plugging. Rule out the problem. C. If the above actions are not working, replace the panel.

Dvd Portatil Daewoo Dpc 7900

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