THOMSON DTH175EL Manual de usuario

THOMSON DTH175EL Service Manual

THOMSON DTH175EL

Service Manual

THOMSON DTH175EL Service Manual

Table of Contents

General Section

Cautions/Warnings

Safe Warnings

Precautions

Software Upgrade

Exploded View

Circuit Diagram and Component Layout

MPEG IC Block Diagrams

Power supply Circuit Diagram and Component Layout

MPEG Circuit Diagram and Component Layout

Front panel Circuit Diagram and Component Layout

Servicing Procedures

Power Supply Trouble Service Flow Chart

Read Disc Trouble Service Flow Chart

Composite Video Trouble Service Flow Chart

Scart Video Trouble Service Flow Chart

S-Video Trouble Service Flow Chart

Composite Analogy Audio Trouble Service Flow Chart

Front Control Trouble Service Flow Chart

Remote Control Trouble Service Flow Chart

Parts List

Power parts list

MPEG parts list

Front panel parts list

AV Output parts list

THOMSON DTH175EL Service Manual

General Section

Cautions/Warnings

Product Safety Notice

Parts marked with the symbol in the schematic diagram have

critical characteristics.

Use ONLY replacement pares recommended by the manufacturer.

It is recommended that the unit be operated from a suitable DC

supply or batteries during initial check out procedures.

Leakage Current Check/Resistance Check

Before returning the unit to the customer, make sure you make

either (1) a leakage current check or (2) a line to insulated

resistance check.

If the leakage current exceeds 0.5 milliamps, or if the resistance

from chassis to either side of the power cord is less than 240 K

ohms, the unit is defective.

WARNING: DO NOT return the unit to the customer until the

problem or located and corrected.

THOMSON DTH175EL Service Manual

Safe Warnings

Protection of Eyes from Laser Beam

To protect eyes from invisible laser beam during servicing

DO NOT LOOK AT THE LASER BEAM

Laser Caution

CAUTION

Adjusting the knobs, switches, and controls, etc. or taking actions

not specified herein may result in a harmful emission of laser

beams. This CD Changer must be adjusted and repaired only by

qualified service personnel.

Laser symbol:

THIS IS COMPACT DISC PLAYER IS CLASSIFIED AS A CLASS 1 LASER

PRODUCT.

THE LASS 1 LASER PRODUCT LABEL IS LOCATED ON THE REAR EXTERIOR.

THOMSON DTH175EL Service Manual

Precautions

ESD Precautions in Repairing

1. Do not apply excessive pressure on the mechanical parts

(moving pares), including the Pickup Block, as extremely high

mechanical precision or required in these parts.

2. When soldering the microprocessor and signal processing IC’s,

use a ceramic soldering iron or a soldering iron whose metal part is

grounded since they are not resistant to static electricity.

3. When removing the solder or soldering the laser shorting lands

for the Pickup Block, use a ceramic soldering iron or a soldering

iron whose metal part is grounded since the laser diode or not

resistant to static electricity.

DVD Loading Unit Precautions when handling the Mechanism Block

1. Do not loosen any screws in the Pickup Block.

2. Do not adjust any screws in the Mechanism Block except for

“Tilt Adjust Screws”, as they are adjusted precisely at the factory.

3. Replacement of the Pickup Block is impossible. Always replace

the Traverse Ass’y when the Pickup Block needed to be replaced.

Do not touch the lens or lens holder of the Pickup Block.

4. The Guide Rails of the Pickup Block are greased. Take care

when handing.

5. When you try to slide the Pickup Block, do not press or pull it

directly. Always turn the dive gears with your fingers.

6. Be sure that the anti-slipping rubber on the turntable or clean. If

there is dust or it is greasy, clean the part with the liquid that

contains 50% each of alcohol and water.

7. When removing the Mechanism P.C.B. Ass’y, you need to

short-circuit the laser diode shorting lands beforehand.

THOMSON DTH175EL Service Manual

Software Upgrade

You can upgrade DVD Player using the software we provide as following step:

―Creating a software upgrade CD

―Use only a new CD-R/CD-RW(not an erased one).

―Give the CD a name of your choice(e.g. version and unit name).

―Burn the unpacked documents on the CD-R/CD-RW.

―The root directory(uppermost level) of the software upgrade CD

Attention: If a failure should occur during the software upgrade (e.g. a mains failure), it

may happen that the units function and a restart of the upgrade function are no longer

possible. If this should be the case, you must replace the intergraded FLASH ICs with

preprogrammed ICs (see corresponding spare parts list).

─Insert the upgrade CD (see corresponding spare parts list) and observe the hints on the

display and on the screen of the TV set.

─Carry out an initialization of the set.

THOMSON DTH175EL Service Manual

Exploded View

THOMSON DTH175EL Service Manual

Circuit Diagram and Component Layout

MPEG IC Block Diagrams

Fig. 2-1 MT1389

THOMSON DTH175EL Service Manual

Fig. 2-2 Functional block diagram

Fig.2-3 DVD Player system Diagram

THOMSON DTH175EL Service Manual

Table1. 1389C Pin Description

Otros manuales para DTH175EL

Tabla de contenidos

Otros manuales de Reproductor de DVD de THOMSON

THOMSON

THOMSON DTHI59E Manual de usuario

THOMSON

THOMSON DSA100 Manual de usuario

THOMSON

THOMSON DTH311 Manual de usuario

THOMSON

THOMSON DTH175EL Manual de usuario

THOMSON

THOMSON DTH6350E Manual de usuario

THOMSON

THOMSON DTH7500 Manual de usuario

THOMSON

THOMSON TWIN7500ST Manual de usuario

THOMSON

THOMSON DPL950 - RECEIVER Manual de usuario

THOMSON

THOMSON DTH8657E Manual de usuario

THOMSON

THOMSON DTH210E Manual de usuario

THOMSON

THOMSON DTH 270 Manual de usuario

THOMSON

THOMSON DTH 250E - ADDENDUM Manual de usuario

THOMSON

THOMSON DTH6100 Manual de usuario

THOMSON

THOMSON DTH4200 Manual de usuario

THOMSON

THOMSON DTH250E Manual de usuario

THOMSON

THOMSON DVD115H Manual de usuario

THOMSON

THOMSON DTH190 Manual de usuario

THOMSON

THOMSON IB5400GB Manual de usuario

THOMSON

THOMSON DTH460E Manual de usuario

THOMSON

THOMSON DTH210U Manual de usuario

THOMSON

THOMSON DTH211 Manual de usuario

THOMSON

THOMSON DTH227E Manual de usuario

THOMSON

THOMSON DTH7500E Manual de usuario

THOMSON

THOMSON DTH109E Manual de usuario

Manuales populares de Reproductor de DVD de otras marcas

Sony

Sony DVP-F11 Manual de usuario

Philips

Philips DVP3560K/F8 Manual de usuario

LENCO

LENCO DVP-740 X2 Manual de usuario

JVC

JVC XV-N650BEU Manual de usuario

Aiwa

Aiwa XD-DV370 Manual de usuario

MedeaWiz

MedeaWiz Sprite 4K DV-S4 Manual de usuario

Denon

Denon DVM-1805 - DVD Changer Manual de usuario

Toshiba

Toshiba SD-3815 Manual de usuario

Tevion

Tevion 44330 Manual de usuario

Samsung

Samsung DVD-HD860 Manual de usuario

Sylvania

Sylvania DP170SL8 Manual de usuario

Toshiba

Toshiba SD-P1200 Manual de usuario

JVC

JVC XV-D9000E Manual de usuario

Dolby Laboratories

Dolby Laboratories CP650 Manual de usuario

Philips

Philips DVD737K/931 Manual de usuario

Denon

Denon DVD-5900 Manual de usuario

Philips

Philips DVD 951 Manual de usuario

Philips

Philips DVDR3460 Manual de usuario