Lg dvd 2300 service manual

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1-4 SERVICING PRECAUTIONS CAUTION : Before servicing the DVD player covered by this service data and its supplements and addends, read and fol- low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir- cumstances create conflict between the following servicing precautions and any of the safety precautions in this publi- cations, always follow the safety precautions. Remembers Safety First: General Servicing Precautions 1. Always unplug the DVD player AC power cord from the AC power source before: (1) Removing or reinstalling any component, circuit board, module, or any other assembly. (2) Disconnection or reconnecting any internal electrical plug or other electrical connection. (3) Connecting a test substitute in parallel with an elec- trolytic capacitor. Caution: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this DVD player or any of its assemblies. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not required. 4. Do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped. 5. Do not apply AC power to this DVD player and/or any of its electrical assemblies unless all solid-state device heat sinks are cerrectly installed. 6. Always connect test instrument ground lead to the appropriate ground before connection the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resis- tance between each blade of the attachment plug and acces- sible conductive parts (Note 1) should be more than 1M- ohm. Note 1 : Accessible Conductive Parts including Metal pan- els, Input terminals, Earphone jacks, etc.Electrostatically Sensitive (ES) Devices 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 transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor compo- nent or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commer- cially available discharging wrist strap device, 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 aluminum 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 a anti-static can generate electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charge sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protec tive package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive 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. (Normally harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static elec- tricity sufficient to damage an ES device.)www.rtv-horvat-dj.hr

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1-5 SPECIFICATIONS DVD VIDEO PLAYER Power supply 100~240V, 50/60Hz Power consumtion 20W Mass 3.5kg(7.7lbs) External dimensions 430 x 80 x 298 (W x H x D) Signal system NTSC Laser Semiconductor laser, wavelength 655nm(DVD)/795nm(CD) Frequency range (digital audio) 2Hz to 44kHz Signal-to-noise ratio (digital audio) More than 105dB (EIAJ) Audio dynamic range (digital audio) More than 95dB (EIAJ) Harmonic distortion(digital audio) 0.003% Wow and flutter Below measurable level (less than +0.001%(W.PEAK)) (EIAJ) Operations Temperature : 5ËšC(41ËšF) to 35ËšC(95ËšF), Operation status : Horizontal OUTPUTS Video outputs 1.0V(p-p), 75-„¦, negative sync., RCA jack x 1 S video outputs (Y)1.0V(p-p), 75-„¦, negative sync.,Mini DIN 4-pin x 1 (C)0.286V(p-p), 75-„¦ Component video output (Y)1.0V(p-p), 75-„¦,negative sync., RCA jack x 1 (Pb)/(Pr) 0.7V(p-p), 75-„¦ Audio output(digital audio) 0.5V(p-p), 75-„¦, RCA jack X 1 Audio output(optical audio) Optical connector x 1 Audio output(analog audio) 2.0Vrms (1kHz, 0dB), 330-„¦, RCA jack (L, R) x 1 *Designs and specifications are subject to change without notice. *Weight and dimensions shown are approximate.www.rtv-horvat-dj.hr