Panasonic DVD-LS50EB User manual

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.
© 2004 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
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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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