Hitachi PDV-302 Service Manual

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SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH

CAUTION:

Before servicing this chassis, it is important that the service technician read the “Safety
Precautions” and “Product Safety Notices” in this service manual.

SM9100

PDV302
PDV302E

Data contained within this Service
manual is subject to alteration for
improvement.

ATTENTION:

Avant d’effectuer l’entretien du châassis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.

VORSICHT:

Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise
zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.

Les données fournies dans le présent
manuel d’entretien peuvent faire l’objet
de modifications en vue de perfectionner
le produit.

Die in diesem Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

DVD Player

October 2004

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PDV302 PORTABLE DVD PLAYER

WITH 7″ TFT DISPLAY

CONTENTS

Page

Specifications..................................................................................................................................................2

Block Diagram ................................................................................................................................................3

Disassembly Instructions................................................................................................................................4

TFT-LCD Driver Board Alignment ..................................................................................................................5

Troubleshooting..............................................................................................................................................6

Printed Circuit Boards.....................................................................................................................................7

Wiring Diagram.............................................................................................................................................10

Exploded View..............................................................................................................................................11

Mechanical Parts List....................................................................................................................................12

Electrical Parts List .......................................................................................................................................13

IC Lead Identification and Inte rnal Diag ram ................................................................................... ..............25

Voltage Cha rts ................................................................................................................ ..............................30

Schem atic Diagram ......................................................................................................................................35

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SPECIFICATIONS

DVD PLAYER SECTION

Laser Type : Semiconductor laser
Disc Diameter : 12/8 cm
Video Decoding : MPEG-2
Video DAC : 10 Bits
Video Formats : 4:3 / 16:9
Video Color System Format : NTSC, PAL
Audio DAC : 24 Bits / 96 kHz

Audio section

Item Unit Limit

Output level R/L (ch) mV
S/N Ratio (A-Weighted) dB 80
Dynamic range (A-Weighted) dB 80
Channel separation R/L (ch) (A-Weighted) dB 66
Distortion % 0.3
Optical digital output level V --­Frequency response @ 20 / 20 kHz R/L (ch) dB

Speaker output

850 ± 100

0 ± 3

Item Unit Limit

10% Output power mW >700
S/N ratio (A-Weighted) dB 60
Channel separation R/L (ch) (A-Weighted) dB 55
Distortion % <1
Frequency response @ 100 / 20 kHz R/L (ch) dB

Headphone output

Item Unit Limit

Output power mW >30
S/N ratio (A-Weighted) dB 60
Channel separation R/L (ch) (A-Weighted) dB 55
Distortion % <1
Frequency response @ 100 / 20 kHz R/L (ch) dB

Headphone output

Item Unit Limit

C-Video output level Vp-p

S-Video output level

Y
C Vp-p

Vp-p

0 ± 6

0 ± 6

1.0 ± 0.1

1.0 ± 0.1

0.3 ± 0.1

2

3

BATTERY AND

PROTECTED

CIRCUIT

DVD PICK UP

Vcc5V V3.3V

B+

AT1380AP

SWITCHING REGULATOR

CONTROLLER

AT5654

DRIVER

5V

CHARGING AND

-16V

+3V

BATT.

DISCHARGING

CONTROLLER

MT1336 E/C

ANALOG

FRONT END

12 V

SDRAM

AC ADAPTER

CT001

CPU

MCU + DECODING

MBM29LV800BA

MT1379 AE/C

RB5P006AM

VIDEO

PROCESSING

KEY

BOARD

Y2

Y3/Y4

CONTROL

CS4340 D/A

CONVERTER

IMPEDANLE

Y1

IMPEDANLE

IMPEDANLE

LZ9GJ24

TIMING

NET

NET

NET

DAC-ML

DAC-MR

OPTICAL/AUDIO-JACK

S-VIDEO-JACK

VIDEO-JACK

TFT

DISPLAY

F4558

PRE. AMP

INVERTER

BOARD

PT2257S

VOL.

CONTROL

BLOCK DIAGRAM

L

LM4863

R

AMP

PH-JACK

PH-JACK

SPK

SPK

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DISASSEMBLY INSTRUCTIONS

7

8

6

5

9

1

2

10

4

3

DETACH REAR CABINET FROM FRONT CABINET MUST REMOVE 10 SCREWS.

4

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TFT-LCD DRIVER BOARD ALIGNMENT

OSC FREQUENCY ADJUSTMENT

1. Adjust the voltage of VR-OSC to -1.2 ∼ -1.6 V.

2. Turn off and turn on unit.

3. Measure the frequency between VD716 and R781 with X10 probe. It should be 19.8 ∼ 20 MHz,
and the value shoulb be steady comparatively.

VCO CHECK

Measure the frequency between X601 and X602 with X10 probe. at NTSC system, the frequency is

3.579545 MHz (±1 kHz), when change to PAL system by remote, the frequency is 4.433619 MHz
(±1 kHz).

IMAGE CENTER POSITION ADJUSTMENT

Playing VCD test disc, make the image locate ceter of TFT panel by adjustment VR-BCK.

DRIVER BOARD FUNCTION CHECK

1. Image reverse check:

press “reverse display” key on key board, the image on TFT panel can be 180º reversed.

2. NTSC / PAL switchover check:
switch NTSC / PAL system by remote, there are a abviously color change on TFT panel,
but the color change can not be colorless.

5

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TROUBLESHOOTING

Item Symptom Cause and Remedy

1 No power

2 No picture

3 Distorted picture

4 Completely Distorted

picture

5 No color in picture (when

connects to TV)

6 Disc can’t be played

7 No sound

8 No return to start-up screen

when disc is removed

9 The player does not

respond to the remote
control

10 No audio at digital output

11 Buttons do not work

12 You have forgotten the

password

• Check if power plug is properly connected.

• Check if there is power at the AC outlet by plugging in another

appliance.

• Check if the TV is connected and switched on.

• Select the correct AV input on the TV.

• Check the video connection.

• Check channel selector is set to AV on the TV (See your TV

manual for instructions).

• Check the disc for fingerprints and clean with soft cloth, wiping
from centre to edge.

• Sometimes a small amount of picture distortion may appear.
This is not a malfunction.

• The disc is not formatted to the TV-set used (PAL/NTSC).

• The disc is not formatted to the TV-set used (PAL/NTSC).

• Ensure DVD Player is not connected through VCR.

• Ensure the disc is label side up.

• Clean the disc.

• Check if the disc is defective by trying another disc.

• Check audio connections.

• Make sure the sound setup of DVD disc is correct.

• Check to see if the program requires another disc to be loaded.

• Reset by unplugging the player from the power supply, the

connect the power supply again.

• Aim the remote control directly at the sensor on the front of the
player.

• Avoid all obstacles which may interfere with the signal path.

• Inspect or replace the batteries.

• Check the digital connections.

• Check the digital out menu to make sure that the digital output is

correctly set.

• Check if the audio format of the selected audio language
matches your receiver capabilities.

• Unplug the player from power outlet and reconnect after a few
seconds.

• The defaulted password is 6789.

6

MAIN PCB (Top View)

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PRINTED CIRCUIT BOARDS

7

MAIN PCB (Bottom View)

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8

KEY PCB (Top View)

KEY PCB (Bottom View)

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DRIVER PCB (Top View)

DRIVER PCB (Bottom View)

9

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WIRING DIAGRAM

TFT - LCD

SPEAKER

P/N: 284060-02 UL1571#28

L/+
L/-

P/N: 20-73143-00 UL1517#30

P/N: 91-04011-00

DRIVER PCB

P/N.: 11-04131-02

XS1A

XS03

R/-

Y

C

CS

GND

LOUT-

ROUT-

LOUT+

ROUT+

CTL

R/+

+5V

STB

CLK

-16V

+13V

DATA

P/N: 20-84060-02

UL1571#28

SPEAKER

LAMP PCB

P/N.: 0 0-04131-01

CTL

GND

+12V

P/N: 20-73033-00 UL#28 P=1.25 L=170 mm

P/N: 25-83065-04 UL2468#24

BATTERY PCB

P/N: 11-04131-04

GND
+12V

CON2

LOUT­LOUT+
ROUT­ROUT+
GND
C
Y
CS
CLK
DATA
STB

-16V
+13V
+5V

CON1

CON4

45

45P P=0.5 L=40 mm

P/N: 25-61020-45

B+
DA

C+
GND

1

DVD TRAVERSE MECH. SDR-083T

P/N: 98-04131-00

MAIN PCB

P/N: 11-04131-00

GND

CON3

K0

K10

K9
K7
K4
K3
K2
K1

KEY PCB

P/N: 11-04131-01

P/N: 20-53091-00 UL1571#30

D

N

1

G

K

2

K

3

K

4

K

7

K

9

K

0

1

0

K

K

J1

10

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EXPLODED VIEW

1

2

3

4

6

54

32

5

53

7

13

12

15

16

17

18

20

14

25

8

9

51

10
11

19

21

22

24

50

49

43

40

39

38

52

48

47

46

45

44

23

37

41

42

29

30

31

33

36

35

26

55

27

28

55

11

34

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MECHANICAL PARTS LIST

Ref. No. Description Qty

1 DPP4131 TFT Cover Top 1
2 DPP4131 TFT Open Knob Bracket 1
3 DPP4131 Open Slide Knob (For TFT Cover) 1
4 DPP4131 TFT Open Knob Spring 1
5 OP4011 TFT Sharp LQ070T5GG01 TFT Panel 1
6 DPP4131 TFT Cover Bottom (BS) ‘HITACHI’ 1
7
8 DPP4131 TFT Rubber Foot 2

9 Screw M3 X 5 BH/MS 2
10 Screw M2 X 5 BH/MS 1
11 Screw M3 X 4 BH/MS 2
12 DPP4131 CD Door Lens 1
13 DPP4131 CD Door 1
14 DPP4131 Middle Cabinet 1
15 DPP4131 Open Button 1
16 DPP4131 Open Button Lock 1
17 DPP4131 Lock Bracket 1
18
19 DPP4131 Adaptor For CD Door 1
20
21 DPP4131 Multi-Purpose Button 1
22 DPP4131 Heat Sink 1
23
24 DPP4131 LED Bracket 1
25
26 DPP4131 Bottom Cabinet (BS) ‘HITACHI’ 1
27
28 DPP4131 Remote Lens 1
29
30 DPP4131 Battery Case Top 1
31 4P Connector(F) P=2.5 250130FS 004G200ZU 1
32 Driver PCB 1
33 OP4131 Battery Pack DC=7.4V W/Protect Circuit 1
34 DPP4131 Battery Case Bottom (BS) ‘HITACHI’ 1
35 DPP4131 Slide Lock Knob 1
36 DPP4131 Slide Knob Spring 1
37
38
39 DPP4131 PCB Contact A Bracket 1
40 DPP4131 Multi-Purpose Button Bracket 1
41 DPP4131 Key PCB 94V0 1 mm 1
42
43 DPP4131 Volume Key +/- 1
44 DPP4131 Function 6 Button 1
45 DPP4131 TFT Stub Cover 1
46 DPP4131 Stud For TFT Cover 1
47 DPP4131 Shaft Cover ( R) 1
48 DPP4131 Damping Plate 1
49 DPP4131 CD Door Spring 1
50 DPP4131 Shaft Cover ( L ) 1
51 DPP4131 Rotating Shaft 1
52 OP4131 Inverter PCB ASS’Y 1
53
54 DPP4131 HITACHI Badge 1
55

Screw ∅1.7 X 5 KH/ST ‘Black’

Screw ∅2 X 6 KH/ST ‘Black’ (HD=3.8)

DPP4131 Slim DVD Traverse Mech SDR-083T (QSI) 1

DPP4131 Main PCB 1

Screw ∅2 X 8 BH/ST

Screw ∅2 X 6 BH/ST

Screw ∅1.7 X 3 KH/ST ‘Black’

4P Connector(M) P=2.5 250133MR 004G200ZU 1
Battery Contact PCB B 1

Screw ∅1.7 X 4 KH/ST ‘Black’

Speaker Cell 8Ω 1W ∅23 mm

XL-PG35 Rubber Foot ∅11.8 X 0.8 mm

9

3

8

4

2

18

2

2

12