HarmanKardon-DVD20-cd-sm维修电路原理图.pdf

DVD20 Digital Versatile Disc Player Dolby Digital / DTS / PCM / MP3 decoding PRELIMINARY Service Technical Manual Harman International SNC - Harman Consumer International 2, route de Tours 72500 Chteau du Loir FRANCE RadioFans.CN TECHNICAL SPECIFICATIONS 35 Technical Specifications Applicable Disc:5 inch (12 cm) or 3 inch (8 cm) DVD-Movie,VCD, CD-i, CD, CD-R or CD-RW discs, Region 2 DVD-Movie Discs, DVD: Single Side/Single Layer, Single Side/Dual Layer, Dual Side/Dual Layer, Linear PCM, MPEG, Dolby Digital or DTS Audio Discs Video Signal System:PAL/NTSC Composite Video Output:1 V p-p/75 Ohms, sync negative polarity S Video Output:Y/Luminance: 1 V p-p/75 Ohms, sync negative polarity C/Chrominance: 0.286 V p-p Analog Audio Output:2 Vrms max Frequency Response:DVD (Linear PCM):2 Hz - 22 kHz +0/-0.5 dB (48 kHz sampling) 2 Hz - 44 kHz +0/-0.5 dB (96 kHz sampling) CD:2 Hz - 20 kHz +0/-0.5 dB Signal/Noise Ratio (SNR):110 dB (A-weighted) Dynamic Range:DVD: 100 dB (18 Bit) / 105 dB (20 Bit) CD/DVD: 96 dB (16 Bit) THD/1kHz:DVD/CD: 0.0025 % Wow F.SLOW 1/16 F.SLOW 1/8 F.SLOW 1/4 F.SLOW 1/2 F.SLOW 1/16 R.SLOW 1/16 R.SLOW 1/8 R.SLOW 1/4 R.SLOW 1/2 R.SLOW 1/16 K RANDOM: Press for RANDOM playback in random order. L STEP(REV/FWD): Freeze a picture when a disc is playing.Also the picture advances frame by frame each time this button is pressed. M NUMBER (09): Select numbers by press- ing these buttons. N PROG: Press to see Program Edit Display on the screen when in STOP mode. O CHECK: Press during playback to check the program status on VFD (front display). Press during stop mode for program edit on VFD. Escape from this display by pressing ”RETURN”. P CLEAR: Press to remove Banner menu from the screen or programmed tracks/chapters from the Program Edit Display. Q LIGHT: Press to lilluminate remote con- troller. ? REPEAT: Press to go to the Repeat menu. You can repeat a chapter, track or the entire disc. ? A-B: Press to select section A-B and to play repeatedly. ? ZOOM:When a DVD or VCD is playing, press this button to zoom the picture so that it is enlarged.There are 4 steps to the zoom func- tion, each progressively larger. Press though each of the zoom stages to return to a normal picture. REAR PANEL CONNECTIONS 9 ? Optical Digital Output Coaxial Digital Output Analog Audio Outputs Composite Video Output S-Video Output Scart Input Scart TV Output Remote Control Output Remote Control Input AC Power Cord Optical Digital Output: Connect this jack to the optical digital input of an A/V receiver or surround processor for Dolby Digital, DTS or PCM audio playback. Coaxial Digital Output: Connect this jack to the coaxial digital input of an A/V receiver or surround processor for Dolby Digital, DTS or PCM audio playback. NOTE:The coaxial digital output should only be connected to a digital input. Even though it is the same RCA-type connector as standard ana- log audio connections, DO NOT connect it to a conventional analog input jack. Analog Audio Outputs: Connect these jacks to an audio input on an A/V receiver or surround processor for analog audio playback. Composite Video Output: Connect this jack to the video input on a television or video projector, or to a video input on an A/V receiver or processor if you are using that type of device for video input switching. S-Video Output: Connect this jack to the S-Video input on a television or video projector, or to an S-Video input on an A/V receiver or processor if you are using that type of device for S-Video input switching. SCART IN (AUX): If an external playback unit has a SCART socket, you can connect a SCART cable to it and to your DVD Player.The SCART cable carries both audio and video sig- nals of the external unit.These signals will be routed through the SCART connector of the DVD to the TV automatically when the DVD player is turned off (in Standby) and the external unit plays. SCART OUT (TV): If your TV has a SCART socket, you can connect a SCART cable to your TV and to your DVD Player for improved video quality.The SCART cable carries both audio and video.You can select Video (composite), S-Video and RGB video for that SCART connectors video output signal (see page 19). Your DVD 20 is equipped with two SCART con- nectors, one for direct connection to the TV, the second for throughput of VCR (playback only) or any other playback video source to a TV with only one SCART input. Remote Control Output: Connect this jack to the infrared (IR) input jack of another compatible Harman Kardon remote controlled product to have the built-in Remote Sensor on the DVD 20 provide IR signals to other compati- ble products. Remote Control Input: Connect the out- put of a remote infrared sensor, or the remote control output of another compatible Harman Kardon product, to this jack.This will enable the remote control to operate even when the front panel Remote Sensor on the DVD 20 is blocked.This jack may also be used with com- patible IR remote control-based automation sys- tems. AC Power Cord: Connect this plug to an AC outlet. If the outlet is controlled by a switch, make certain that it is in the ON position. Note:Youll find more details about all Audio/Video connections under Setup and Connections on the following pages. Rear Panel Connections 10 SETUP AND CONNECTIONS Setup and Connections I Ensure that the power switch of this unit and other equipment to be connected is set to off before commencing connection. I Do not block ventilation holes of any of the equipment and arrange them so that air can circulate freely. I Read through the instructions before connect- ing other equipment. I Ensure that you observe the color coding when connecting audio and video cables. Notes: I The Video output (yellow) combines the com- plete video signal (composite) and sends it to the TV (or to the AV Receiver) by one line only. Use the Video output, when your TV set is equipped with a Video input jack only. I The S (separate) video output connector sepa- rates the color (C) and luminance (Y) signals before transmitting them to the TV set in order to achieve a sharper picture. Use the S- video cable (optional) when connecting the player to a TV equipped with an S-video input for improved picture clarity. Never connect both outputs,Video and S-Video, to your TV or AV Receiver, only one of them. I Most European TVs are equipped with SCART connectors rather than with a normal video input (yellow cinch). In that case the SCART connection should be used, providing the audio signal too, (see page 12). Separate ana- log audio connections to TV are needed only if your TV is connected to the video or S-video output. I When the audio signal is to be fed to a stereo or Pro Logic amplifier/decoder or receiver rather than to the TV, connect the Audio Out jacks to any normal audio input on your amplifier/decoder/receiver.The DVD 20 will ”downmix” Dolby Digital recordings to Pro Logic, available on these connectors, all ana- log surround or stereo signals will be fed to them directly. You can also select the audio and video sig- nals of all your video devices with your AV Receiver/Amplifier. For more information see ”Note” on next page. TV To power outlet (AC 230V/50 Hz) To S-Video input connector To audio input connector (Red/White) on the TV or Stereo/Pro Logic Amplifier/Receiver To Video input connector (Yellow) Connecting to a stereo TV and stereo or Pro Logic Amplifier/Receiver DVD 20 SETUP AND CONNECTIONS 11 Setup and Connections When DVDs encoded in Dolby Digital or DTS are played, the Dolby Digital or DTS bitstream is out- put from the players OPTICAL or COAXIAL digi- tal audio output.When the player is connected to a Dolby Digital or DTS decoder, you can enjoy theater-quality audio in your home.An optical digital audio cable or coaxial audio cable (both optional) is required for these connections, as shown below. Only one connection is needed, not both at the same time. I Note: With multiple video sources,your Audio/Video device can be used for selecting the video signal and routing it to the TV. Connect the video or S-video output of the DVD 20 (whatever is provided with your device) to the video or S-video input on your device and the video/S-video output of this device to your TV.For more details,see the manual of your Audio/Video amplifier/receiver. I Note for Analog Audio:The connection from Audio Out to the TV is optional only. Normally youll hear the sound from your AV- systems speakers, so the TV volume should be completely turned down. If you plan to use your DVD20 also without having to turn on your complete system, this connection must exist, then you can turn up the TVs volume as needed. TV To power outlet (AC 230V/50 Hz) To S-Video input connector To audio input connector (Red/White, optional only, see Note above) Front Speaker (Left/Right)Center SpeakerSurround Speaker (Left/Right)Subwoofer To Video input connector (Yellow) Connecting to a receiver/amplifier with Dolby Digital (AC-3) or DTS (Digital Theater Systems) decoder Dolby Digital or DTS decoder DVD 20 To coaxial audio input connector To optical audio input connector 12 SETUP AND CONNECTIONS Setup and Connections Important Notes on SCART and RGB format: I Your DVD 20 is equipped with two SCART connectors, one for direct connection to the TV, the second (AUX) for throughput of VCR or any other video source to a TV with only one SCART input.The signal from this video source will be routed through the SCART con- nector of the DVD to the TV automatically when the unit plays (composite video only) and the DVD 20 is turned off (to Standby, not completely). I Both SCART connectors provide the video signal as well as audio (stereo L/R) signals. I The SCART connector for the TV provides the composite video signal, the S-Video signal or the direct RGB signal, delivering the best video performance possible, all selectable in the Setup menu.To view RGB video on your TV, the RGB compatible SCART connector on the TV must be used and the DVD 20s TV SCART connector must be set to RGB (see page 19). Note that with RGB video the color intensity cannot be adjusted with most TVs. I When the RGB video signal is used, DVDs recorded with the NTSC format (with regional code 0 or 2) can be viewed even on non- NTSC compatible TVs. Connecting to a TV or monitor with SCART connectors TV or Monitor To power outlet (AC 230V/50 Hz) To SCART connector To SCART connector of any video source To analog input of stereo or Pro Logic Amplifier/Receiver To optical or coaxial input of Dolby Digital/ DTS Decoder/ Amplifier/Receiver DVD 20 REMOTE CONTROL AND HEADPHONES 13 Remote Control and Headphones Battery installation Insert the batteries supplied while observing the correct (+) and () polarities. Service life of batteries I The batteries normally last for about one year, although this depends on how often, and for what operations, the remote control is used. I If the remote control unit fails to work even when it is operated near the player, replace the batteries. I Use size “AA” batteries. Notes: I Do not attempt to recharge, short-circuit, dis- assemble, heat or throw the batteries into fire. I Do not drop, step on or otherwise impact the remote control unit.This may damage the parts or lead to malfunction. I Do not mix old and new batteries. I Wipe away any leakage inside the remote control unit, and install new batteries. I If leakage should come into contact with parts of your body, wash it off thoroughly with water. I Batteries contain chemical substances and we recommend that you dispose of them properly and in compliance with any local regulations. Do not simply throw them away but return to your dealer or special battery disposal centers. Remote control operation range Point the remote control unit from no more than about 7 m from the remote control sensor and within about 60 degrees of the front of the unit. I The operating distance may vary according to the brightness of the room. Notes: I Do not point bright lights at the remote con- trol sensor. I Do not place objects between the remote control unit and the remote control sensor. I Do not use this remote control unit while simultaneously operating the remote control unit of any other equipment. Connecting headphones 1. Connect the headphones. I Headphones with a 6.3 mm stereo plug can be connected. 2.Adjust the volume. Caution:Avoid listening to sound at levels which may be harmful to your ears. Headphones Phone Level DVD 20 STOP DIMMER TST SKIP PLAY/PAUSE SEARCH 3030 DVD 20 STOP DIMMER TEST SKIP PLAY/PAUSE SEARCH ONOFF SEARCH OPEN/CLOSE SEARCH STOPPAUSE POWER RETURN TITLE MENUENTER STATUS SUBTITLE ON/OFF DVD 20 RC RANDOM ZOOMSTEP PROG. CHECK CLEAR LIGHT A - B REPEAT PREV. SLOW AUDIO PLAY NEXT 1 2 7 56 89 0 4 SUBTITLEANGLE 3 14 DIGITAL AUDIO CONNECTIONS Digital Audio Connections Notes when connecting the opti- cal digital audio cable (optional) I Remove the dust protection cap from the optical digital audio output and connect the cable firmly so that the configurations of both the cable and the connector match. I Keep the dust protection cap and always reattach the cap when not using the connec- tor. Audio output from the units optical/coaxial digital audio out- put connector *1Digital Audio Output (see page 21) selected ”Dolby Digital” or ”PCM”. *2Digital Audio Output selected ”DTS” or other (see page 21). For your reference: I Dolby Digital (AC-3) is a digital sound com- pression technique developed by the Dolby Laboratories Licensing Corporation, supporting 5.1-channel surround sound, as well as stereo (2-channel) sound, this tech- nique enables a large quantity of sound data to be efficiently recorded on a disc. I Linear PCM is a signal recording format used in CDs.While CDs are recorded in 44.1kHz/16 bit, DVDs are recorded in 48 kHz/16 bit up to 96 kHz /24 bit. I If you have a Dolby Pro Logic Surround decoder connected to the DVD 20s analog AUDIO OUT connectors, thanks to the Downmix function of the DVD 20 you will obtain the full benefit of Pro Logic from the same DVD movies that provide full 5.1-chan- nel Dolby Digital soundtracks, as well as from titles encoded with Dolby Surround. Caution for the optical/coaxial digital audio outputs: IWhen connecting an amplifier (with an opti- cal/coaxial digital input ) which does not con- tain a Dolby Digital (AC-3) or DTS decoder, be sure to select “PCM” as initial setting in the “Digital Audio Output” menu (see also page 21). Otherwise, any attempt to play DVD may cause such a high level of noise that it may be harmful to your ears and damage your speakers. I CDs can be played as they would normally be played. Notes: I Some first generation DTS decoders which do not support DVD-DTS interface may not work properly with the DVD/CD player. Manufactured under license from Dolby Laboratories.“Dolby” and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works.1992-1997 Dolby Labor