Panasonic PVD4742 - DVD/VCR DECK Manuale utente

ORDERNO. MKE0201800C1

DVD/VCR DECK

PV-D4742

SPECIFICATIONS

2002 Matsushita Kotobuki Electronics Industries Ltd. All rights

reserved. Unauthorized copying and distribution isaviolation of

law.

1. SAFETY PRECAUTIONS

GENERALGUIDELINES

1. IMPORTANTSAFETY NOTICE

There are special components used inthisequipment which are

important for safety. These parts are marked byinthe

SchematicDiagrams, CircuitBoard Layout, Exploded Viewsand

Replacement Parts List. Itisessential that these critical parts

shouldbe replaced with manufacturer’sspecified parts to prevent

shock, fire or other hazards. Donot modifythe original design

without permission of manufacturer.

2. AnIsolation Transformer shouldalwaysbe used during the

servicing of DVDVCR whose chassisisnot isolated from the AC

power line. Use atransformer of adequate power rating as this

protects the technician from accidents resulting inpersonal injury

from electrical shocks. Itwill also protect DVDVCR from being

damaged byaccidental shorting that mayoccur during servicing.

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

isfound, replace all parts which have been overheated or

damaged bythe short circuit.

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

insulation barriers, insulation papers shields are properly

installed.

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

prevent the customer from being exposed to shock hazards.

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 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 infinity.

LEAKAGE CURRENTHOTCHECK

(See figure 1.)

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

isolation transformer for thischeck.

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

capacitor, between each exposed metallicpart on the set and a

good earth ground, as showninfigure 1.

3. Use an AC voltmeter, with 1k /Vor 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 VRMS. A

leakage current tester (Simpson Model 229 or equivalent) maybe

used to make the hot checks. Leakage current must not exceed 1/

2mA. Incase ameasurement isoutside of the limits specified,

there isapossibilityof ashock hazard, and the equipment should

be repaired and rechecked before itisreturned to the customer.

Figure 1

1.1. LASERPRODUCT

CLASS I LASER PRODUCT

-Thisequipment iscertified to complywith DHHSRules 21 CFR

Chapter 1, Subchapter Jineffect as of date of manufacture. (Only

for U.S.A.)

This equipment is classifiedas a Class I (Class 1) level LASER Product and there is no

hazardous LASER radiation withthe safetyprotection.

Caution:

Use of controlsor adjustments or performance of procedures other

than those specified hereinmayresultinhazardous radiation

exposure.

Danger:

The serviceman shouldnot remove the cover of drive unitand

shouldnot service because the drive unitisanon- serviceable

parts. Please check that the labels.

Nevertouchthe internal parts inordertoavoidEXPOSURE TO VISIBLE LASER RADIATION.

Unplug the AC powercordtothe equipment whenopening the top cover.

Whenthe powerswitchis On, do not place youreyes close tothe front panel opening dooror

the otheropenings tolook intothe interiorunit.

LASER Specification

Class I level A LASER Product (Class 1 level A LASER Product)

Wave Length:

647 -677 nm (at DVD)/ 775 -815 nm (at CD)

Laser Power:

Nohazardous radiation isemitted with the safetyprotection.

1.2. PRECAUTIONOFLASERDIODE

CAUTION:

Thisunitutilizes aclass III alaser. Visiblelaser 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 hereinmayresultinhazardous radiation

exposure.

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, some field-effect transistors and 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

shouldremove electrostaticcharge 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 antistaticsolder removal device. Some solder

removal devices not classified as "antistatic(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 harmless motion such as the brushing

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

carpeted floor can generate staticelectricity(ESD)sufficient to

damage an ES device).

"NOTE toCATV systeminstaller:

This reminderis providedtocall the CATV systeminstaller’s attention toArticle 820-22 of the

NEC that provides guidelines forpropergrounding and, inparticular, specifies that the cable

ground shall be connectedtothe grounding systemof the building, as close tothe point of

cable entryas practical."

3. OPERATION GUIDE

4. SERVICE NOTES (PLEASE READ)

4.1. SERVICENOTES

4.1.1. SIMPLIFIED FAULT FINDING DATA

SimplifiedSelf-Diagnostic Systemfacilitates finding the cause of the fault. A 3-digit fault code

will be displayedinF.I.P.

The SimplifiedFault finding data is storedinthe MemoryIC (IC6005). This data is clearedafterit

is displayed, and thenthe POWER button is pressedback on.

1. With power turned off, press CH DOWNbutton on VCR (for over 3

seconds ifVCR isnot inshut off condition).

Fig. 1-1

2. Faultcode (3-digitnumber) will be displayed inF.I.P. as shown.

Fig. 1-2

Fig. 1-3

Fig. 1-4

Fig. 1-5

3. When 1to 4listed inLock code occurs, Lock data will be stored in

the MemoryIC(latest Lock data only).

Note:

1. Lock data will be kept after the AC Cord isunplugged.

2. When 1to 4listed inLock code occurs for the first time, the VCR

does not go into VCR shut-off condition. Ifitoccurs againwithina

minute, the VCR goes into VCR shut-off condition. Then, the VCR

stops and all VCR function buttons except for power become non-

operational.

3. Lock data will be cleared at the first power on operation after Lock

code isdisplayed inFIP.

4.1.2. USAGE SCREEN MODE

Function displayedon the TV monitor:

-the total elapsed "Cylinder rotation" time (inhours)

-the total elapsed "DVDPlay"time (inhours)

1. With power turned and no cassette, press CH DOWNbutton on

VCR and 7keyon remote together.

(The USAGESCREENwill be displayed on the TV Monitor.)

Fig. 2

Note:

1. After replacing the Cylinder Unit, press COUNTERRESET button

on remote inthismode. OnlyTotal elapsed "Cylinder rotation"

time (inhours) will be cleared to 0.

2. To release from Usage Screen Mode, press anyoperation button

on VCR or insert acassette tape inthismode. The VCR will return

to normal operation mode.

4.1.3. EEPROM IC (IC6005), MAIN C.B.A. REPLACEMENTNOTE

Afterreplacing EEPROM IC (IC6005) orMainC.B.A., be sure toperform the "PG SHIFTER

ADJUSTMENT" inELECTRICALADJUSTMENTprocedures.

4.1.4. GROUNDING FOR ELECTROSTATIC BREAKDOWN

Prevention

1. Human bodygrounding

Use the antistaticwrist strap to discharge the staticelectricity

from 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. Fig. 3

4.1.5. DVD DECODER C.B.A. REPLACEMENTNOTE

Afterreplacing the DVD DecoderC.B.A. orEEPROM IC (IC8001), confirm the Firmware version

of DVD using Self-Diagnostic function. If the version is different thanthat indicatedon the

Firmware Disc, update it using the Firmware Disc. Referto"HOW TO UPDATE THE FIRMWARE

OF DVD."

4.1.6. METHOD FOR EJECTING THE DVD TRAY MANUALLY

1. Insert aStraightened Paper Clipor similar object into the Eject

hole.

2. Press itgently, and then pull the Trayfullyout.

Fig. 4

4.1.7. SELF-DIAGNOSTIC TESTFUNCTION FOR DVD UNIT

This unit has a Self-Diagnostic function whichdetects a problemormalfunction withinthe unit

and displays its corresponding Errorcode on the TV Screen.

Note:

If, after approx. 30 seconds, aunitset to DVDmode automatically

switches to VCR mode, there islikelyaproblem with the DVD

Decoder C.B.A. (IC8000, IC8100, IC8200, etc.)

HowtoenterDVD Self-Diagnostic mode

1. Connect aTV Monitor.

2. Insert aDVDdisc into the DVDUnit.

3. Set the unitto DVDmode. Then, press STOPbutton to stop

playback.

Note:

Donot let aDVDplayduring DVDSelf-Diagnosticmode.

4. Press and holdSTOPbutton on the VCR and 9keyon the remote

together with no cassette inserted. The unitwill enter the DVDSelf

-Diagnosticmode. Fig. 5-1

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