JVC-RX8012VSL-avr-sm维修电路原理图.pdf

SERVICE MANUAL AUDIO/VIDEO CONTROL RECEIVER No.21002 Jun. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. RX-8012VSL RX-8010VBK RX-8012VSL/RX-8010VBK UJU.S.Military Contents Safety precautions -1-2 Disassembly method -1-3 Adjustment method -1-9 Self-diagnose function -1-10 Description of major ICs -1-1228 D I G I T A L UWBrazil,Mexico,Peru Area Suffix RX-8012VSL RX-8010VBK CONTROL DOWNUP EFFECTSETTING DIGITAL EQ TV SOUND/DBSVIDEOVCR 2VCR 1DVDDVD MULTI MIDNIGHT MODEDSP MODE S-VIDEOVIDEO VIDEO LAUDIOR SURROUND ON/OFF SUBWOOFER OUT ON/OFF SPEAKERS ON/OFF FM/AM TUNINGFM/AM PRESETFM MODE MEMORY PHONES 1 STANDBY USB AUDIO PUSH OPEN INPUT ANALOG/DIGITAL INPUT ATT FM / AMUSB AUDIOTAPE / MDCDRCDPHONO LEVEL ADJUST RX-8012V AUDIO/VIDEO CONTROL RECEIVER LINE DIRECT BASS BOOST MASTER VOLUME D I G I T A L SURROUNDD I G I T A L 2 SOUCE NAME SOUCE NAME STANDBY/ON CONTROL 231 564 897/P 0+1010 LINE DIF .ECTBOOSTEFFECT MENU ENTER SIZE ROOMBASS MODETESTCTR TONELIVENESS MIDNIGHT SOUNDSUBWFR DIGITAL EQREAR L REAR R L/R BALCENTER MUTING CH/LEVEL TV VOL PLAY STOP /REW DOWN TUNING UP FF/ EXIT BAL L BAL R VOLUME CATV/DBS CONTROL TV/VIDEO MENU TEXT REC DISPLAY PAUSE PAUSE SET RETURNFM MODE100+ CONTROL A/V CONTROL RECEIVER CATV/DBSVCR 1TVAUDIO DSP MODEINPUTON/OFF DVD MUILTIDVD USB CD CDR TAPE/MD TV/DBSVIDEOPHONO FM/AM VCR 1VCR 2 SURROUNDANALOG/DIGITALSLEEP RM-SRX8012U ModelColor RX-8012VSL RX-8010VBKBlack Silver RadioFans.CN 收音机爱 好者资料库 RX-8012VSL/RX-8010VBK 1-2 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only. 2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. 3. Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. 4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling. 5. Leakage current check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1. This equipment has been designed and manufactured to meet international safety standards. 2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained. 3. Repairs must be made in accordance with the relevant safety standards. 4. It is essential that safety critical components are replaced by approved parts. 5. If mains voltage selector is provided, check setting for local voltage. Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (Except the JUSB AUDIO terminal (9) aVIDEO input terminals (7) sMIDNIGHT MODE button (13) dSource selecting buttons and lamps (11) DVD MULTI, DVD, VCR 1, VCR 2, VIDEO, TV SOUND/DBS, PHONO, CD, CDR, TAPE/MD, USB AUDIO, FM/AM fSOURCE NAME buttons (16) gCONTROL UP 5/DOWN buttons hBASS BOOST button and lamp (14) * These buttons function only after pressing 10 keys on the remote control which are marked with an asterisk (*). a;ou 213 4 57 89pqw e r ty isdg 6 hf CONTROL DOWNUP EFFECTSETTING DIGITAL EQ TV SOUND/DBSVIDEOVCR 2VCR 1DVDDVD MULTI MIDNIGHT MODEDSP MODE S-VIDEOVIDEO VIDEO LAUDIOR SURROUND ON/OFF SUBWOOFER OUT ON/OFF SPEAKERS ON/OFF FM/AM TUNINGFM/AM PRESETFM MODE MEMORY 2 PHONES STANDBY USB AUDIO INPUT ANALOG/DIGITAL INPUT ATT FM / AMUSB AUDIOTAPE / MDCDRCDPHONO LEVEL ADJUST RX-8012V AUDIO/VIDEO CONTROL RECEIVER LINE DIRECT BASS BOOST MASTER VOLUME D I G I T A L SURROUNDD I G I T A L 1 SOURCE NAME SOURCE NAME STANDBY/ON Remote Control 1Display window (11) a. Remote control operation mode indicator b. Signal transmission indicator Lights up when transmitting the remote control signal. 2 buttons (11, 51 54) CATV/DBS, VCR 1, TV, AUDIO 3Source selecting buttons (11) DVD, DVD MULTI, CD, FM/AM, TV/DBS, VIDEO, CDR, PHONO, VCR 1, VCR 2, TAPE/MD, USB 4SURROUND ON/OFF button (26, 27, 30) 5DSP MODE button (26, 29 33) 6LINE DIRECT button (14) 7MIDNIGHT MODE button (13) 8SOUND button (14 17, 27 35, 49) 9MUTING button (13) 0CATV/DBS CONTROL button (53) -TV/VIDEO button (51, 52) =MENU button (36 40) TEXT DISPLAY button (43 46) !REC PAUSE button (50, 51, 53) SLEEP button (15) #ANALOG/DIGITAL INPUT button (20) $ 10 keys for selecting preset channels (23) 10 keys for adjusting sound (14 17, 27 35, 49) 10 keys for operating audio/video components (49 54 ) % LEVEL +/ buttons* (15, 17, 27 35) BAL L and BAL R buttons* (16) CH +/ buttons (51 53) TV VOL +/ buttons (51, 52) when in monaural, you will hear monaural sounds. This mode is also useful to suppress static noise between stations. The AUTO MUTING indicator lights up on the display. MONO: Reception will be improved although you will lose the stereo effect. In this mode, you will hear noise while tuning into the stations. The AUTO MUTING indicator goes off from the display. Note: When using the FM MODE on the remote control, be sure that the 10 keys are activated for the tuner, not for the CD and others. (See page 11.) 0 REAR L FM MODE On the front panelFrom the remote control FM MODE ANALOG VOLUME AUTO MUTING TUNEDSTEREO LR SPEAKERS 1 ANALOG VOLUME TUNED LR SPEAKERS 1 FM/AM PRESET FM / AM 231 564 897/P 0+1010 BOOSTEFFECT MENU ENTER SIZE ROOMBASS TEST CTR TONELIVENESS SUBWFR DIGITAL EQREAR L REAR R L/R BALCENTER RETURNFM MODE100+ EN11_23.RX-8012VUW_f01.2.14, 2:18 PM23 24 English Creating a Surround Field in Your Room The built-in Surround Processor provides Surround mode and four types of the DSP (Digital Signal Processor) mode DAP (Digital Acoustic Processor) mode, 5 CH/4 CH Stereo mode, 3D-PHONIC mode, and HEADPHONE DSP mode. With this receiver, you can use a Surround mode and a DSP mode at the same time. Once you have adjusted Surround and/or DSP modes, the adjustments done for each source are memorized. *Manufactured under license from Dolby Laboratories. “Dolby,” “Pro Logic,” and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works. 19921997 Dolby Laboratories, Inc. All rights reserved. *Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other world-wide patents issues and pending. “DTS” and “DTS Digital Surround” are trademarks of Digital Theater Systems, Inc. 1996 Digital Theater Systems, Inc. All rights reserved. Surround modes With this receiver, you can use two types of the Surround mode. Following modes cannot be used when only the front speakers are connected to this receiver (without the rear speakers or center speaker). Dolby Surround (Dolby Digital and Dolby Pro Logic)* Used to watch the soundtracks of software encoded with Dolby Digital (bearing the mark D I G I T A L ) or with Dolby Surround (bearing the mark DOLBY SURROUND). Dolby Surround encoding format records the left front channel, right front channel, center channel, and rear channel (total 4 channels) signals into 2 channels. The Dolby Pro Logic decoder built in this receiver decodes these 2 channel signals into original 4 channel signals matrix-based multichannel reproduction, and allows you to enjoy the realistic sound field in your listening room. On the other hand, Dolby Digital encoding method (so called a discrete 5.1 channel digital audio format) records and compresses the left front channel, right front channel, center channel, left rear channel, right rear channel, and LFE channel (total 6 channels, but LFE channel is counted as 0.1 channel, therefore called 5.1 channels) signals digitally. Each channel is completely independent from other channel signals to avoid interference, therefore, you can obtain much better sound quality with much stereo and surround effects. The Dolby Digital decoder built in this receiver can create much more realistic sound field in your listening room. You may feel as if you were in a real theater. In addition, Dolby Digital enables stereo rear sounds, and sets the cutoff frequency of the rear treble at 20 kHz, comparing to 7 kHz for Dolby Pro Logic. These facts enhance the sound movement and being-there feelings much more than Dolby Pro Logic. To enjoy the software encoded with Dolby Digital, you must connect the source component using the digital terminal on the rear of this receiver. (See page 8.) DTS Digital Surround* DTS Digital Surround is another discrete 5.1 channel digital audio format available on CD, LD, and DVD software encoded with DTS Digital Surround (bearing the mark ). Comparing to Dolby Digital, audio compression rate is relatively low. This fact allows DTS Digital Surround format to add breadth and depth to the reproduced sounds. As a result, DTS Digital Surround features natural, solid and clear sound. To enjoy the software encoded with DTS Digital Surround, you must connect the source component using the digital terminal on the rear of this receiver. (See page 8.) DSP modes With this receiver, you can use four types of the DSP mode. DAP modes In order to reproduce a more acoustic sound field in your listening room while playing music sources, you can use DAP modes. This mode can be used when the front speakers are connected to this receiver (without respect to the rear/center speaker connection). THEATER 1:Reproduces the sound field of a large theater (where the seating capacity about 1,000). THEATER 2:Reproduces the sound field of a small theater (where the seating capacity about 300). HALL 1:Gives clear vocal and the feeling of a large concert hall (where the seating capacity about 1,000). HALL 2:Gives clear vocal and the feeling of a small concert hall (where the seating capacity about 300). LIVE CLUB:Gives the feeling of a live music club with a low ceiling. DANCE CLUB:Gives a throbbing bass beat. PAVILION:Gives the spacious feeling of a pavilion with a high ceiling. 5 CH/4 CH Stereo mode You can create more powerful sound field for both of the digital and analog stereo sounds source. The 4 CH Stereo mode reproduces a sound field through the front left and right speakers and rear left and right speakers. The 5 CH Stereo mode adds the center channel element to the 4 CH Stereo sound field by outputting mixed left and right signals through the center speaker. This mode cannot be used when only the front speakers are connected to this receiver without the rear speakers. Note: “5CH STEREO” is selected when setting the center speaker to “LARGE” or “SMALL,” and “4CH STEREO” is selected when setting the center speaker to “NONE” (see page 17). EN24_35.RX-8012VUW_f01.2.14, 11:52 AM24 25 English Reproducing the Sound Field The sound heard in a concert hall or club consists of direct sound and indirect sound early reflections and reflections from behind. Direct sounds reach the listener directly without any reflection. On the other hand, indirect sounds are delayed by the distances of the ceiling and walls. These direct sounds and indirect sounds are the most important elements of the acoustic surround effects. The Surround and DSP modes can create these important elements, and give you a real “being there” feeling. Early reflections Reflections from behind Direct sounds DVD MULTI Playback Mode This receiver provides the DVD MULTI playback mode for reproducing the analog discrete 5.1 channel output mode of the DVD player or other equipment. You can adjust the DVD MULTI playback mode while playing back a video software such as a DVD using the analog discrete 5.1 channel output mode. F