JVC-RXDV3SL-avr-sm维修电路原理图.pdf
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1、SERVICE MANUAL HOME THEATER DVD/CD RECEIVER No.21124 Jul. 2002 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. RX-DV3SL RX-DV3SL Contents Safety precautions - Importance administering point on the safety - Preventing static electricity - Disassembly method - Adjustment method - Description of major ICs
2、 - Area suffix J - U.S.A. 1-2 1-3 1-4 1-5 1-14 1-1626 MASTER VOLUME DVD/SUPER VCD/VCD/CD INPUT ATT.REC MODE INPUT ANALOG/DIGITAL COMPACT SUPER VIDEO SETTINGADJUSTMEMORY RX-DV3 HOME THEATER DVD/CD RECEIVER ON/OFF SURROUND MODE FM/AMTAPE/CDR SOURCE NAME TVVCRDBSDVD CONTROL STANDBY STANDBY/ON + + 231 5
3、64 897 VFP10/0+10 100+TV RETURN VCRDBSDVD TV/VIDEOREW/ TUNING /FF REPEATSLEEP VCRDBSTVAUDIO TAPETVCDRFM/AM FM MODESTROBE EFFECT TV/DBS CH + ANALOG /DIGITALTEST AUDIO INPUT SUBTITLE CHOICE ENTER ON SCREEN ANGLE ZOOM DIGEST TOP MENUMENU RETURN SURR ON/OFF SURR MODE DIMMER MUTINGTV VOLVOLUME SUBWOOFER
4、+ HOME THEATER DVD/CD RECEIVER SOUND STANDBY/ON CENTER REARL REARR REMOTE CONTROL RM-SRXDV3J PROGRESSIVE RadioFans.CN 收音机爱 好者资料库 RX-DV3SL 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
5、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. A
6、ny 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 prod
7、ucts 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 safe
8、ty 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
9、 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 sh
10、arp 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 currnet check (Electrical shock hazard testing) After r
11、e-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
12、 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 leak
13、age 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 expos
14、ed 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 meausre the AC voltage across the resistor. Now, revers
15、e 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
16、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
17、 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 reg
18、ard 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. (This regulation does not correspond to J and C ve
19、rsion.) RadioFans.CN 收音机爱 好者资料库 RX-DV3SL 1-3 Caution: For continued protection against risk of fire, replace only with same type 5A/125V for F101, 2A/125V for F202 and F203. This symbol specifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de
20、F101 comme le meme type que 5A/125V, et 2A/125V pour F131 et F132. Ce sont des fusibles suretes qui functionnes rapide. Importance administering point on the safety Secondary parts Primary part LVA10332-A2 LVA10330-1 5A-125V F 101 5A-125V 2A-125V F 131 2A-125V F 132 RX-DV3SL 1-4 Preventing static el
21、ectricity 1. Grounding to prevent damage by static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 2.
22、About the earth processing for the destruction prevention by static electricity In the equipment which uses optical pick-up (laser diode), optical pick-up is destroyed by the static electricity of the work environment. Be careful to use proper grounding in the area where repairs are being performed.
23、 2-1 Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. 2-2 Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. 3. H
24、andling the optical pickup 1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.) 2. Do not use a tester to ch
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