Hitachi PDV302 Manual de usuario

CAUTION:

Before servicing this chassis, it is important that the service technician read the “Safety

Precautions”and“ProductSafetyNotices”inthisservicemanual.

ATTENTION:

Avant d’effectuer l’entretien du châassis, le technicien doit lire les «Précautions de sécurité»

etles«Noticesde sécurité du produit» présentés dans le présent manuel.

VORSICHT:

Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise

zurProduktsicherheit“indiesemWartungshandbuchzulesen.

SERVICE MANUAL

MANUEL D'ENTRETIEN

WARTUNGSHANDBUCH

Data contained within this Service

manual is subject to alteration for

improvement.

Les données fournies dans le présent

manuel d’entretien peuvent faire l’objet

de modifications en vue de perfectionner

leproduit.

Die in diesem Wartungshandbuch

enthaltenen Spezifikationen können sich

zwecksVerbesserungenändern.

SPECIFICATIONSAND PARTS ARE SUBJECTTO CHANGE FOR IMPROVEMENT

DVD Player

October 2004

SM9100

PDV302

PDV302E

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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 Internal Diagram ................................................................................... ..............25

Voltage Charts ................................................................................................................ ..............................30

SchematicDiagram ......................................................................................................................................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 850 ±100

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 0 ±3

Speaker output

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 0 ±6

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 0 ±6

Headphone output

Item Unit Limit

C-Video output level Vp-p 1.0 ±0.1

Y Vp-p 1.0 ±0.1

S-Video output level C Vp-p 0.3 ±0.1

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BLOCK DIAGRAM

BATTERY AND

PROTECTED

CIRCUIT

BATT.

CHARGING AND

DISCHARGING

CONTROLLER

CT001

CPU

RB5P006AM

VIDEO

PROCESSING

LZ9GJ24

TIMING

CONTROL

TFT

DISPLAY

INVERTER

BOARD

DVD PICK UP

MT1336 E/C

ANALOG

FRONT END

MT1379 AE/C

MCU + DECODING

CS4340 D/A

CONVERTER

F4558

PRE. AMP

PT2257S

VOL.

CONTROL

AT5654

DRIVER SDRAM

IMPEDANLE

NET

AT1380AP

SWITCHING REGULATOR

CONTROLLER

LM4863

AMP

MBM29LV800BA KEY

BOARD

IMPEDANLE

NET

IMPEDANLE

NET

Vcc5V V3.3V 5V +3V -16V

VIDEO-JACK

S-VIDEO-JACK

OPTICAL/AUDIO-JACK

SPK

PH-JACK

DAC-ML

DAC-MR

Y3/Y4

AC ADAPTER

12 V

B+

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DISASSEMBLY INSTRUCTIONS

DETACH REARCABINET FROM FRONT CABINET MUST REMOVE 10SCREWS.

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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 POSITIONADJUSTMENT

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.

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TROUBLESHOOTING

Item Symptom Cause and Remedy

1 No power •Check if power plug is properly connected.

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

appliance.

2 No picture •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).

3 Distorted picture •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.

4 Completely Distorted

picture

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

5 No color in picture (when

connects to TV)

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

•Ensure DVD Player is not connected through VCR.

6 Disc can’t be played •Ensure the disc is label side up.

•Clean the disc.

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

7 No sound •Check audio connections.

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

8 No return to start-up screen

when disc is removed

•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.

9 The player does not

respond to the remote

control

•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.

10 No audio at digital output •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.

11 Buttons do not work •Unplug the player from power outlet and reconnect after a few

seconds.

12 You have forgotten the

password

•The defaulted password is 6789.

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MAIN PCB (Top View)

PRINTED CIRCUIT BOARDS

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MAIN PCB (Bottom View)

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KEY PCB (Top View)

KEY PCB (Bottom View)

DRIVER PCB (Top View)

DRIVER PCB (Bottom View)

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