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

25、eck the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 4. Handling the traverse unit (optical pickup) 1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. 2. Cut off the s

26、horted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector. 3. H

27、andle the flexible cable carefully as it may break when subjected to strong force. 4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. Conductive material (conductive sheet) or iron plate (caption) Anti-static wrist strap Attention when traverse unit

28、 is decomposed Because the DVD/ CD mechanism assembly of this model is a unit component, the individual component parts consisting of the DVD / CD mechanism assembly are not supplied separately. If you need to decompose the traverse unit, short-circuit the connector of the flexible board by using a

29、metal clip and the like prior to decomposing the traverse unit. DVD / CD holder mechanism DVD / CD unit Pickup unit connectorSoldering points Card wire Fig.1 Fig.2 RX-DV3SL 1-5 Remove the four screws marked A attaching the top cover on both sides of the body. Remove the three screws marked B on the

30、back of the body. Remove the top cover from behind in the direction of 1. 2. 3. Disassembly method Removing the top cover (See Fig.1) Prior to performing the following procedures, remove the top cover. Remove the power cord stopper from the rear panel by moving it in the direction of the arrow. Remo

31、ve the twenty one screws marked D attaching each boards to the rear panel on the back of the body. Remove the three screws marked E attaching the rear panel on the back of the body. 1. 2. 3. Removing the rear panel (See Fig.5) Prior to performing the following procedures, remove the top cover. Disco

32、nnect the card wire from the connector CN114 on the main board. Remove the five screws marked C attaching the front panel assembly on the bottom of the body. Detach the front panel assembly toward the front. Release the two joints marked a on both sides on the bottom of the body using a screwdriver.

33、 1. 2. 3. Removing the front panel assembly (See Fig.2 to 4) Fig.1 Fig.2 Fig.3 Fig.4 A 2 A 2 B Top cover C Power supply board DSP board Main board Tie band D E Cord stopper C Front panel assembly Front panel assembly DRear panel CN114 E E Amplifier board Power /Fuse board CN201 Joint a Fig.5 DD RX-D

34、V3SL 1-6 Prior to performing the following procedures, remove the top cover and rear panel. Cut off the tie band fixing the harness. Disconnect the DSP board from the connector CN612 on the main board, Disconnect the card wire frome the connecter CN614 on the main board. Disconnect the S-video board

35、 from the connector CN412 on the main board. 1. 2. 3. 4. Removing each board connected to the rear side of the main board (See Fig.6 to 10) Fig.6 Fig.7 Fig.8 DSP board Amplifier board Power /Fuse board DSP board CN412 CN201 CN612 CN241 CN212 CN612 Tuner board CN612 CN602 Tie band CN212 F S-video boa

36、rd CN602 Amplifier board CN212 G CN231 CN241 DSP board S-video board Amplifier board CN231 Fig.9 CN612 CN212 S-video board CN231 CN241 Fig.10 CN231 CN241 Main board CN212 CN612 CN412 Tuner board Amplifier board Front panel assembly RX-DV3SL 1-7 Remove the six screws marked H attaching the heat sink.

37、 Unsolder the two power ICs solder points attaching the rear side of the amplifier board. Pull out the amplifier board from the bracket hooks on the heat sink. 1. 2. 3. Removing the power ICs (See Fig.13, 14) Prior to performing the following procedures, remove the top cover, and rear panel. Disconn

38、ect the amplifier board from the connector CN201. Disconnect the amplifier board from the connector CN212 on the main board. Disconnect the amplifier board from the wire connected to the connector CN231 and CN241 on the main board. Disconnect the screws marked F frome the ground wire attaching the a

39、mplifier board on the fan bracket. Disconnect the four screws G attaching the amplifier board on the body. 1. 2. 3. 4. 5. Removing the amplifier board (See Fig.11, 12) Fig.11 Fig.12 Fig.14 Fig.13 Amplifier board rear side Heat sink HH Power ICs solder points Heat sink Fook Fook Amplifier board DSP b

40、oard Amplifier board CN201 CN612 CN602 Tie band CN212 F G CN231 CN241 CN231 CN241 CN212 Main board RX-DV3SL 1-8 Prior to performing the following procedures, remove the top cover, rear cover and DSP board. Remove the DVD / CD unit dust proof cover attaching on the main board. Remove the three screws

41、 marked I attaching the DVD /CD unit. Disconnect the connectors CN512 and CN513 on the main board. 1. 2. 3. Removing the DVD CD unit (See Fig.15) Prior to performing the following procedures, remove the top cover, rear cover, DSP board, amplifier board S-video board and fan bracket. If necessary, cu

42、t off the tie band fixing the harness. Disconnect the card wire from the connector CN115 on the power supply board. Disconnect the harness connected to the connector CN111 on the power supply board. Disconnect the harness connected to the connector CN121 on the main board. Remove the four screws mar

43、ked K attaching the power supply board on the body. Unsolder the solder points at the three harnesses connected to the power supply board. 1. 2. 3. 4. 5. 6. Removing the power supply board (See Fig.17) Prior to performing the following procedures, remove the top cover, rear cover, DSP board, amplifi

44、er board and S-video board. If necessary, cut off the tie band fixing the harness. Remove the two screws marked J attaching the fan bracket on the body. Remove the harness bands fixing the harness on the fan bracket. Disconnect the connector CN111 on the power supply board. Disconnect the connector

45、CN122 on the main board. 1. 2. 3. 4. 5. Removing the fan bracket (See Fig.16) Fig.15 Fig.16 I CN512 CN513 Dust proof cover I DVD / CD unit Main board Tie band Power supply board Fan bracket J Harness bands CN122 CN111 Fig.17 Power supply board K K CN121 CN111 CN115 CN121 CN115 CN122 Tie band Solder

46、points Main board RX-DV3SL 1-9 Prior to performing the following procedure, remove the top cover and rear panel. Disconnect the harness connected to the connector CN101 on the power / fuse board (If necessary, cut off the band fixing the harness on the side of the base chassis). Unsolder the power c

47、ord and other harnesses connected to the power / fuse board. Remove the two screws marked M attaching the power / fuse board on the body. 1. 2. 3. Removing the power / fuse board (See Fig.19) Prior to performing the following procedures, remove the top cover and rear panel. If necessary, cut off the

48、 tie band fixing the harness. Disconnect the harness from the connector CN101 on the power / fuse board. Disconnect the harness from the connectors CN111 and CN121 on the power supply board and main board. Unsolder the three harnesses connected to the power supply board. Remove the four screws marked L attaching the power transformer on the body. 1. 2. 3. 4. 5. Removing the power transformer (See Fig.18, 19) Prior to performing the following