Panasonic DVD-LS50EB Manuel utilisateur

Service Manual

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ORDER NO.DSD0406020C8

Portable DVD/CD PLAYER

●DVD-LS50EB

DVD-LS50EG

DVD-LS50GCS

DVD-LS50GK

DVD-LS50GN

REA1904Z Mechanism Series

Colour

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

Specifications

Operating temperature

range: +5 to+35°C (+41 to+95°F)

Operating humidity range: 5-90% RH (no condensation)

Region number: Region No.2 (DVD-LS50EB/EG)

Region No.3 (DVD-LS50GCS)

Region No.4 (DVD-LS50GN)

Region No.6 (DVD-LS50GK)

Discs played: DVD-RAM (DVD-VR compatible, JPEG formatted discs)

DVD-Video, DVD-Audio

Music CD [CD-DA (CD-TEXT compatible)]

Video CD

CD-R/ CD-RW

[CD-DA (CD-TEXT compatible), Video CD, SVCD,MP3, WMA, JPEG, HighMAT

Level 2 (Audio and Image)]

DVD-R (DVD-Video compatible)

MP3/WMA

Compatible compression rate:

between 32 kbps and 320 kbps (MP3)

between 48 kbps and 320 kbps (WMA)

JPEG

Exif Ver2.1 JPEGBaseline files

Picture resolution: between 320×240 and 6144×4096 pixels

(sub sampling is 4:2:2 or 4:2:0)

Signal system: PAL/PAL60(NTSC) selectalble

LCD screen: 7”

-Si, TFT wide-screen LCD

Composite-video output:

Output level: 1Vp-p (75Ω)

Output terminal: Mini-jack

Number of terminals: 1system (output only)

S-video output:

Y output level: 1Vp-p (75Ω)

C output level: 0.3Vp-p (75Ω)

Output terminal: Mini-jack

Number of terminals: 1system (also used for composite-video output)

Audio output:

Output level: 1.5Vrms (1kHz, 0dB, 10kΩ)

Output terminal: Stereo mini-jack

Number of terminals: 1system (output only)

Audio performance:

(1) Frequency response:

•DVD (linear audio): 4Hz-22kHz (48kHz sampling)

4Hz-44kHz (96kHz sampling)

•DVD audio: 4Hz-88kHz (192kHz sampling)

•CD audio: 4Hz-20kHz

(2) S/N ratio:

•CD audio: 115dB

(3) Dynamic range:

•DVD (linear audio): 98dB

•CD audio: 97dB

(4) Total harmonic distortion:

•CD audio: 0.008%

Digital audio output:

Optical digital output: Mini optical terminal

Number of terminals: 1system

(also used for audio output)

Pickup:

Wave length: 662nm/ 785nm

Laser power: CLASS 3B/ CLASS 3B

Power supply: DC 9V (DC IN terminal)/

DC 7.2V (Exclusive battery terminal)

Power consumption

(Using included AC adaptor): 13W (Unit only: 9W)

Standby mode 0.5W

Recharge mode 13W

AC adaptor:

Power source: AC 100-240V, 50/60Hz

Power consumption: 30W

DC output: 9V, 2000mA

Battery pack CGR-H701 (lithium ion):

Voltage: 7.2V

Capacity: 2150mAh

Battery duration When brightness is set to“-5” while playing DVD

2.5 hours (CGR-H701)

/10 hours (CGR-H703)

*CGR-H703: Option

*Room temperature

*using headphones

When brightness is set to“0” while playing DVD

2 hours (CGR-H701)

/8 hours (CGR-H703)

When brightness is set to“+5” while playing DVD

1.5 hours (CGR-H701)

/6 hours (CGR-H703)

When LCD panel is off while DVD playing

4 hours (CGR-H701)

/16 hours (CGR-H703)

Dimensions (excluding protrusions and battery): 190(W) x 165(D) x 29.2*(H) mm

[715/ 32” (W) x 61/ 2” (D) x 15/ 32” (H)]

*27.8mm(13/ 32”) at lowest point

[H=37.8mm (11/ 2”) including battery]

Mass (including battery): 795g (28.04oz.)

solder:

This model uses lead free solder (PbF).

Note

Specifications are subject to change without notice.

Mass and dimensions are approximate.

Power consumption in standby mode (using included AC adaptor): Main unit: 0.5W

Manufactured under license from Dolby Laboratories.

“Dolby“ and the double-D symbol are trademarks of Dolby Laboratories.

“DTS“ and“DTS 2.0+ Digital Out” are trademarks of Digital Theater Systems, Inc.

Apparatus Claims of U.S. Patent Nos. 4,631,603, 4,577,216, and 4,819,098, licensed for limited viewing uses only.

This product incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned by

Macrovision Corporation and other rightsowners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended for

home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassemblyis prohibited.

Windows Media, and the Windows logo are trademarks, or registered trademarks of Microsoft Corporation in the United States and/or other countries.

WMA is a compression format developedby Microsoft Corporation. It achieves the same sound quality as MP3 with a file size that is smaller than that of MP3.

MPEG Layer-3 audio decoding technology licensed from Fraunhofer llS and Thomson multimedia.

HighMAT and the HighMAT logo are either trademarks or registered trademarks of Microsoft Corporationin the United States and/or other countries.

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1 SAFETY PRECAUTIONS

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1.1 GENERAL GUIDELINES

1.1.1 LEAKAGE CURRENT COLD CHECK

1.1.2 LEAKAGE CURRENT HOT CHECK

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1.1 GENERAL GUIDELINES

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1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts

which have been overheated or damaged by the short circuit.

2. After servicing, see to it that 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 COLD CHECK

1.1.2 LEAKAGE CURRENT HOT CHECK

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1.1.1 LEAKAGE CURRENT COLD CHECK

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1. Unplug the AC cord and connect a jumper between the two prongs on the plug.

2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each

exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts,

etc. When the exposed metallic part has a return path to thechassis, the reading should be

between 1MΩand 5.2MΩ.

When the exposed metal does not have a return path to the chassis, the reading must be

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1.1.2 LEAKAGE CURRENT HOT CHECK

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1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this

check.

2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15μF capacitors, between each

exposed metallic part on the set and a good earth ground such as a water pipe.

3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across

the resistor.

4. Check each exposed metallic part, and measure the voltage at each point.

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

6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester

(Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must

not exceed 1/2 milliamp. In case a measurement is outsideof the limits specified, there is a

possibility of a shock hazard, and the equipment should be repaired and rechecked before it is

returned to the customer.

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2 PREVENTION OF ELECTRO STATIC

DISCHARGE (ESD) TO ELECTROSTATICALLY

SENSITIVE (ES) DEVICES

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Some semiconductor (solid state) devices can be damaged easily by static electricity. Such

components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES

devices are integrated circuits and some field-effect transistorsand semiconductor "chip" components.

The following techniques should be used to help reduce the incidence of component damage caused

by electro static discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped

assembly, drain off any ESD on your body by touching a known earth ground. Alternatively,

obtain and wear a commercially available dischargingESD wrist strap, which should be

removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a

conductive surface such as alminum foil, to prevent electrostatic charge buildup or exposure

of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as

"anti-static (ESD protected)" can generate electrical charge sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to

damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before

you are ready to install it. (Most replacement ES devices are packaged with leads electrically

shorted together by conductive foam, alminum foil or comparableconductive material).

7. Immediately before removing the protective material from the leads of a replacement ES

device, touch the protective material to the chassis or circuit assembly into which the device

will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise

hamless motion such as the brushing together of your clothes fabric or the lifting of your foot

from a carpeted floor can generate static electricity (ESD) sufficient todamage an ES device).

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3 PRECAUTION OF LASER DIODE

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