Panasonic DMR-EH55EC Manuale utente

ORDERNO.DSD0603003CE

DVDRecorder

DMR-EH55EC / DMR-EH55EP / DMR-EH56EG

Vol. 1

Colour

(S).......................Silver Type

(K).......................Black Type

SPECIFICATIONS

Unauthorized copying and distribution isaviolation of law.

1. Safety Precaution

1.1. General guidelines

1. When servicing, observe the original lead dress. Ifashort circuit

isfound, replace all parts which have been overheated or

damaged bythe short circuit.

2. After servicing, see to itthat all the protective devices such as

insulation barriers, insulation papers shields are properly

installed.

3. After servicing, make the following leakage current checks to

prevent the customer from being exposed to shock hazards.

1.1.1. Leakage current coldcheck

1. Unplug the AC cord and connect ajumper between the two

prongs on the plug.

2. Measure the resistance value, with an ohmmeter, between the

jumpered AC plug and each exposed metalliccabinet part on the

equipment such as screwheads, connectors, control shafts, etc.

When the exposed metallicpart has areturn path to the chassis,

the reading shouldbe between 1M and 5.2M .

When the exposed metal does not have areturn path to the

chassis, the reading must be .

Figure 1

1.1.2. Leakage current hot check / (See Figure 1 .)

1. Plug the AC cord directlyinto the AC outlet. Donot use an

isolation transformer for thischeck.

2. Connect a1.5k , 10 watts resistor, inparallel with a0.15 F

capacitors, between each exposed metallicpart on the set and a

good earth ground such as awater pipe, as shownin Figure 1.

3. Use an AC voltmeter, with 1000 ohms/voltor more sensitivity, to

measure the potential across the resistor.

4. Check each exposed metallicpart, and measure the voltage at

each point.

5. Reverse the AC plug inthe AC outlet and repeat each of the above

measurements.

6. The potential at anypoint shouldnot exceed 0.75 volts RMS. A

leakage current tester (Simpson Model 229 or equivalent) maybe

used to make the hot checks, leakage current must not exceed 1/2

milliampere. Incase ameasurement isoutside of the limits

specified, there isapossibilityof ashock hazard, and the

equipment shouldbe repaired and rechecked before itisreturned

to the customer.

2. Warning

2.1. Prevention of ElectrostaticDischarge (ESD)to Electrostatic

Sensitive (ES) Devices

Some semiconductor(solidstate) devices canbe damagedeasilybystatic electricity. Such

components commonlyare calledElectrostatic Sensitive (ES) Devices. Examples of typical ES

devices are integratedcircuits and some field-effect transistor-sand semiconductor"chip"

components. The following techniques shouldbe usedtohelpreduce the incidence of

component damage causedbyelectrostatic discharge (ESD).

1. Immediatelybefore handling anysemiconductor component or

semiconductor-equipped assembly, drainoff anyESDon your

bodybytouching aknownearth ground. Alternatively, obtainand

wear acommerciallyavailabledischarging ESDwrist strap, which

shouldbe removed for potential shock reasons prior to applying

power to the unitunder test.

2. After removing an electrical assemblyequipped with ES devices,

place the assemblyon aconductive surface such as aluminum

foil, to prevent electrostaticcharge buildup or exposure of the

assembly.

3. Use onlyagrounded-tipsoldering iron to solder or unsolder ES

devices.

4. Use onlyan anti-staticsolder removal device. Some solder

removal devices not classified as "anti-static(ESDprotected)"

can generate electrical charge sufficient to damage ES devices.

5. Donot use freon-propelled chemicals. These can generate

electrical charges sufficient to damage ES devices.

6. Donot remove areplacement ES device from its protective

package until immediatelybefore you are readyto install it. (Most

replacement ES devices are packaged with leads electrically

shorted together byconductive foam, aluminum foil or

comparableconductive material).

7. Immediatelybefore removing the protective material from the

leads of areplacement ES device, touch the protective material to

the chassisor circuitassemblyinto which the device will be

installed.

Caution

Besure no power isapplied to the chassisor circuit, and observe

all other safetyprecautions.

8. Minimize bodilymotions when handling unpackaged replacement

ES devices. (Otherwise hamless motion such as the brushing

together of your clothes fabricor the lifting of your foot from a

carpeted floor can generate staticelectricitysufficient to damage

an ES device).

2.2. Precaution of Laser Diode

2.3. Service caution based on legal restrictions

2.3.1. General description about Lead Free Solder(PbF)

The leadfree solderhas beenusedinthe mounting process of all electrical components on the

printedcircuit boards usedforthis equipment inconsidering the globallyenvironmental

conservation.

The normal solderis the alloyof tin(Sn) and lead(Pb). Onthe otherhand, the leadfree solderis

the alloymainlyconsists of tin(Sn), silver(Ag) and Copper(Cu), and the melting point of the

leadfree solderis higherapprox.30 degrees C (86°F) more thanthat of the normal solder.

Definition of PCB LeadFree Solderbeing used

The letterof “PbF” is printedeitherfoil side orcomponents side on the PCB

using the leadfree solder.

(See right figure)

Service caution forrepairwork using LeadFree Solder(PbF)

-The lead free solder has to be used when repairing the equipment

for which the lead free solder isused.

(Definition: The letter of “PbF” isprinted on the PCB using the

lead free solder.)

-To put lead free solder, itshouldbe well molten and mixed with the

original lead free solder.

-Remove the remaining lead free solder on the PCB cleanlyfor

soldering of the new IC.

-Since the melting point of the lead free solder ishigher than that of

the normal lead solder, ittakes the longer time to meltthe lead

free solder.

-Use the soldering iron (more than 70W) equipped with the

temperature control after setting the temperature at 350±30

degrees C(662±86°F).

RecommendedLeadFree Solder(Service Parts Route.)

-The following 3types of lead free solder are availablethrough the

service parts route.

RFKZ03D01K-----------(0.3mm 100g Reel)

RFKZ06D01K-----------(0.6mm 100g Reel)

RFKZ10D01K-----------(1.0mm 100g Reel)

Note

*Ingredient: tin(Sn), 96.5%, silver(Ag) 3.0%, Copper(Cu) 0.5%, Cobalt (Co) / Germanium(Ge)

0.1 to0.3%

3. Service Navigation

3.1. Service Information

3.2. Caution for DivX

4. Specifications

5. New Feature

5.1. About DivX

5.1.1. General

DivX is a newvideocompressing format that is appliedMPEG4 technologytoimprove image

qualityand the compressibility, and it is developedbythe DivXNetworks, Inc., Videofile of high

resolution and the high picture qualitycanbe made though it is a high compressibility.

DivX codec is necessaryforconverting videotoDivX file and .playback files made.

5.1.2. Operating Instructions about DivX Video-on-Demand Content

DivX Video-on-Demand (VOD) content is encryptedforcopyright protection. Inordertoplay

DivX VOD content on this unit, you first needtoregisterthe unit.

Followthe on line instructions forpurchasing DivX VOD content toenterunit's registration code

and registerunit. Visit www.divx.com/vod formore information.

Displayunit's registration code.

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