Panasonic DVD-A7 Manuale utente

ORDERNO.ODSD000701C5

B12

DVDPlayer

DVD-A7 / DVD-A10

Areas

D......................U.S.A. and Canada. (A7only)

PP....................U.S.A. and Canada. (A10 only)

EB....................Great Britain.

EC....................Italy, Spain, Switzerland and North Europe, etc. (A7

only)

EG....................Germanyand Poland, etc. (A10 only)

SPECIFICATIONS

Specifications

General

Power requirements: AC 120 V, 60 Hz

Power consumption: 22 W: DVD-A7 / 26W: DVD-

A10 / (STANDBY mode:

1.5W)

Dimensions: 430 (W)×275 (D)×99 (H): DVD-

A7/ 430 (W)×275 (D)×125 (H):

DVD-A10

(excluding protrusions)

Mass: 3.9kg: DVD-A7/ 8.6kg: DVD-

A10

Signal system: NTSC

Operating temperature range: +5to+35°C

Operating humidityrange: 5-90 %RH (no condensation)

Discs played

(1)DVD-Videodisc:

12 cm single-sided, single-layer

12 cm single-sided, dual-layer

12 cm double-sided, single-layer

8cm single-sided, single-layer

8cm single-sided, dual-layer

8cm double-sided, single-layer

(2)Compact disc (CD-DA, VideoCD):

12 cm disc

8cm disc

Videooutput

Output level: 1Vp-p(75 )

Output terminal: Pinjack (2systems)

S videooutput

Y output level: 1Vp-p(75 )

C output level: 0.286 Vp-p(75 )

Output terminal: S terminal (2systems)

Component videooutput

Output connector: Pinjack / (Y: green, PB:

blue, PR: red)

Audiooutput

Output level: 200 mVrms (10 kHz, -20 dB)

Output terminal:

2chmixedoutput (L/R): Pinjack (2systems)

6chdiscreteoutput: Pinjack (1system)

Audiosignal output characteristics

(1)Frequencyresponse:

DVD audio: 2Hz-88 kHz

DVD video: 2Hz-44 kHz

CD: 2Hz-20 kHz (EIAJ)

(2)S/N ratio:

CD: 115 dB (EIAJ)

(3)Dynamicrange:

DVD (LPCM): 106 dB: DVD-A7

108 dB: DVD-A10

CD: 100 dB (EIAJ)

(4)Total harmonicdistortion:

DVD (LPCM): 0.0012 %

CD: 0.0017 %(EIAJ)

Digital audiooutput

Optical digital output: Optical terminal

Coaxial audiooutput: Pinjack

Phones jack

Output connector: 6.3mm stereojack

Output level: 180 mVrms (32 , -20 dB)

Pickup

Wavelength: 665 nm

Laser power: CLASS 2

Notes:

Specificationsare subject tochangewithout notice.

Mass and dimensionsare approximate.

Unauthorized copying and distribution isaviolation of law.

1. SAFETY PRECAUTIONS

1.1. GENERALGUIDELINES

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 CURRENTCOLD CHECK

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 thechassis,

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 CURRENTHOTCHECK (See Figure1.)

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

milliamp. Incase ameasurement isoutsideof the limits specified,

there isapossibilityof ashock hazard, and the equipment should

be repaired and rechecked before itisreturned to the customer.

2. PREVENTION OF ELECTRO STATIC DISCHARGE

(ESD) TO ELECTROSTATICALLY SENSITIVE (ES)

DEVICES

Some semiconductor(solidstate) devices canbe damagedeasilybystatic electricity. Such

components commonlyare calledElectrostaticallySensitive (ES) Devices. Examples of typical

ES devices are integratedcircuits and some field-effect transistorsand 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 acommerciallyavailabledischargingESDwrist 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 alminum 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, alminum 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 staticelectricity(ESD)sufficient

todamage an ES device).

3. PRECAUTION OF LASER DIODE

Caution

Thisunitutilizes aclass I laser. Invisiblelaser radiation isemitted

from the optical pickup lens when the unitisturned on:

1. Donot look directlyinto the pickup lens.

2. Donot use optical instruments to look at the pickup lens.

3. Donot adjust the preset variableresistor on the optical pickup.

4. Donot disassemblethe optical pickup unit.

5. Ifthe optical pickup isreplaced, use the manufactures specified

replacement pickup only.

6. Use of control or adjustment or performance of procedures other

than those specified herinmayresultinhazardous radiation

exposure.

4. HANDLING PRECAUTIONS FOR TRAVERSE DECK

The laserdiode inthe optical pickup maybreak downdue topotential difference causedby

static electricityof clothes orhumanbody.

Sobe careful of electrostatic break downduring repairof the optical pickup.

4.1. Handling of optical pickup

1. Donot subject the optical pickup to staticelectricityas itis

extremelysensitive to electrical shock.

2. To prevent the breakdownof the laser diode, an antistatic

shorting pinisinserted into the flexibleboard (FPCBoard). /

When removing or connecting the short pin, finish the job inas

short times as possible.

3. Becareful not to applyexcessive stress to the flexibleboard (FPC

Board).

4. Donot turn the variableresistor (Laser power adjustment).

4.2. Grounding for electrostaticbreakdownprevention

1. Human bodygrounding / Use the antistaticwrist strap to

discharge the staticelectricityfrom your body.

2. Work tablegrounding / Put aconductive material (sheet) or steel

sheet on the area where the optical pickup isplaced and ground

the sheet.

Caution

The staticelectricityof your clothes will not be grounded through

the wrist strap. So take care not to let your clothes touch the

optical pickup.

5. Optical Pickup Self-Diagnosis and Replacement

Procedure

The optical pickup self-diagnosis function and tilt adjustment check function have beennewly

addedtothis player. Whenrepairing, use the following procedure foreffective Self-diagnosis

and tilt adjustment.

Be sure touse the self-diagnosis function before replacing the optical pickup when"NO DISC"

is displayed. As a guideline, you shouldreplace the optical pickup whenthe value of the laser

drive current is more than50.

Note

Press the powerbutton toturnon the power, and check the value before the unit warms up

(withinthree minutes).

6. Self-Diagnosis Function and Service Modes

6.1. Service Mode Table

The service modes canbe activatedbypressing various button combinations on the playerand

remote control unit.

Player

buttons Remote control unit

buttons Application

Note

PAUSE

OPEN/CLOSE

0 Displaying the UHFdisplayF_ _ _ Referto

section

6.2, Self-

Diagnosis

Function

(UHF

Display).

5 Jittercheck, Tilt adjustment Referto

section

11.12,

Optical

Pickup

Adjustment.

6Checking the region numbers and

broadcast system

7Checking the programversion Check the

IC6302

FLASH

ROM

program.

9Lighting Confirmation Function of Display

Tube

DISPLAY Checking the laserdrive current Referto

section

Optical

Pickup

Self-

Diagnosis

Replacement

PAUSE Writing the laserdrive current value after

replacing

the optical pickup (do not use foranything

otherthan

optical pickup replacement)

Procedure.

PAUSE

SKIP/

SEARCH<<

OPEN/CLOSE

Initializing the DVD player

(restoring factorypreset settings) / *Use

whenreplaceing a microprocessor,

microprocessorperipheral parts, orP.C.B.

Referto

section

10.1,

Initializing

DVD

Player

6.2. Self-DiagnosisFunction (UHFDisplay)

This unit incorporates a convenient self-diagnosis function foruse introubleshooting.

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