JVC-XVN512S-cd-sm 电路图 维修手册.pdf

SERVICE MANUAL COPYRIGHT 2004 Victor Company of Japan, Limited No.YD016 2004/8 DVD AUDIO/VIDEO PLAYER YD01620048 XV-N510B,XV-N512S TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22 Area Suffix J - U.S.A. C - Canada STANDBY/ON 2 5 8 1 4 7 3 6 9 010+10 TITLE /GROUP TV/VIDEO CANCELRETURNPAGE VOLVOL+ CH+ CH VFPZOOM AMP VOL AUDIO 3D PHONIC SUB TITLEANGLE DIMMERREPEAT OPEN /CLOSE TV1TV2TV3 TV4TV5TV6 TV7TV8TV9 TV-/-TV0MUTING TVDVD NEXTPREVIOUS SELECTCLEAR SLOW-SLOW+ T O P M E N U M E N U O N S C R E E N S E T U P ENTER TVDVD PROGRESSIVE SCAN fs/Rate XV-N510BJC, XV-N510BCC, XV-N512SJC, XV-N512SCC RadioFans.CN 收音机爱 好者资料库 1-2 (No.YD016) SPECIFICATION Manufactured under license from Dolby Laboratories. “Dolby”,”MLP Lossless and the double-D symbol are trademarks of Dolby Laboratories. “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc. This product incorporates copyright protection technology that is protected by U.S. patents and other intellectual property rights. Use of this copyright protection technology must be authorized by Macrovision, and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision. Reverse engineering or disassembly is prohibited. Digital output signal chart XV-N510B,XV-N512S for J,C General Readable discsDVD AUDIO, DVD VIDEO, DVD-R (Video format), DVD-RW (Video format/VR format), DVD-RAM (VR format), SVCD, Video CD, Audio CD (CD-DA), CD-R/RW (CD-DA, SVCD, Video CD, MP3/WMA format, JPEG) Video formatREMOTE, 480i (Interlaced scan)/480p (Progressive scan) selectable Other Power requirementsAC 120 V, 60 Hz Power consumption13 W (POWER ON), 2.0 W (STANDBY mode) Mass1.9 k g (4.2 lbs) Dimensions (W H D)435 mm 44 mm 258.6 mm (17-3/16 inch 1-3/4 inch 10-3/16 inch) Video outputs COMPONENT (pin jacks)Y Output: 1.0 Vp-p (75 ) PB/PR Output: 0.7 Vp-p (75 ) VIDEO OUT (pin jack)1.0 Vp-p (75 ) S-VIDEO OUT (S jack)Y Output: 1.0 Vp-p (75 ) C Output: 286 mVp-p (75 ) Horizontal resolution500 lines or more Audio outputs ANALOG OUT (pin jack)2.0 Vrms (10 k) DIGITAL OUT (COAXIAL)0.5 Vp-p (75 termination) DIGITAL OUT (OPTICAL)-21 dBm to -15 dBm (peak) Audio characteristics Frequency responseCD (sampling frequency 44.1 kHz):2 Hz to 20 kHz DVD (sampling frequency 48 kHz):2 Hz to 22 kHz (4 Hz to 20 kHz for DTS and Dolby Digital bitstream signals) DVD (sampling frequency 96 kHz):2 Hz to 44 kHz DVD (sampling frequency 192 kHz/176.4 kHz):2 Hz to 88 kHz Dynamic range16 bit: More than 98 dB 20 bit/24 bit: More than 106 dB Wow and flutterUnmeasurable (less than +- 0.002%) Total harmonic distortion16 bit: less than 0.006% 20 bit/24 bit: less than 0.005% * Notes for PX model (Check the specification indication on the rear panel.) Power requirements AC 110 V to 240 V , 50 Hz/60 Hz Power consumption 13 W (POWER ON), 2.0 W(STANDBY mode) Disc type Output PCM ONLYDOLBY DIGITAL/PCMSTREAM/PCM DVD with 48/44.1 kHz, 16/20/24 bit linear PCM DVD AUDIO with MLP 48/44.1 kHz, 16/20/24 bit, stereo linear PCM DVD with 192/176.4/96/88.2 kHz, 16/22/24 bit linear PCM DVD AUDIO with MLP 48/44.1 kHz, 16/20/24 bit, stereo linear PCM (Down sampling) DVD with DTS48 kHz, 16 bit, stereo linear PCMDTS bitstream DVD with Dolby Digital48 kHz, 16 bit, stereo linear PCMDolby Digital bitstream SVCD/Video CD/Audio CD44.1 kHz, 16 bit, stereo linear PCM Audio CD with DTS44.1kHz, 16 bit, stereo linear PCMDTS bitstream CD-R/RW with MP3/WMALinear PCM RadioFans.CN 收音机爱 好者资料库 (No.YD016)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. 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 per- formed 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 characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser- vice 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 charac- teristics 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 reassem- bling. (5) Leakage shock hazard testing) After reassembling the product, always perform an isola- tion check on the exposed metal parts of the product (an- tenna 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, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent 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 sensi- tivity in the following manner. Connect a 1,500 ohm 10W resistor paralleled by a 0.15 F AC-type capacitor be- tween 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.). 1.2Warning (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. 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety 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 JC version) RadioFans.CN 收音机爱 好者资料库 1-4 (No.YD016) 1.5Preventing 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. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players. Be careful to use proper grounding in the area where repairs are being performed. (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) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup 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.) Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 1.6Handling 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 shorted 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) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. (No.YD016)1-5 1.7Precautions for Service 1.7.1Handling of Traverse Unit and Laser Pickup (1) Do not touch any peripheral element of the pickup or the actuator. (2) The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock. (3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.) (4) To replace the traverse unit, pull out the metal short pin for protection from charging. (5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center of the flexible wire to open the circuit. (6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block. Do not change the setting of these half-fixed resistors for laser power adjustment. 1.7.2Destruction of Traverse Unit and Laser Pickup by Static Electricity Laser diodes are easily destroyed by static electricity charged on clothingor the human body. Before repairing peripheral elements of the traverse unit or pickup, be sure to take the following electrostatic protection: (1) Wear an antistatic wrist wrap. (2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground the sheet or the plate. (3) It solders to two short circuit sections on the substrate of a pick-up. (4) After removing the flexible wire from the connector (CN101), short-circuit the flexible wire by the metal clip. (5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup. After completing the repair, remove the solder to open the circuit. Short circuit Pick-up *Please refer to the disassembly method for details. Gear1 Main board CN101 1-6 (No.YD016) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.YD016)1-7 SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the top cover (See Figure 1) (1) Remove the two screws A attaching the top cover on both sides of the main body. (2) Remove the three screws B attaching the top cover on the back of the main body. (3) Raise the both sides and lower part of the rear of the top cover, with opening them slightly in an outward direction. And the top cover will be removed. Fig.1 B B B A x 2 TOP COVERTOP COVERTOP COVER 1-8 (No.YD016) 3.1.2Removing the mechanism assembly (See Figure 2, Figure 3, Figure 4) Prior to performing the following procedure, remove the top cover. There is no need to remove the front panel assembly. (1) Insert a kind of screwdriver in a hole located in the right side of mechanism assembly, and push a lever until it can- not be inserted any further. (2) And then, a tray will come out. Remove the tray in an upper direction, with slightly opening the lower part of fitting in an outward direction. (3) Remove the three screws C attaching the mechanism as- sembly. (4) A tray is made to slide ahead. (5) A gear 1 is turned counterclockwise. Then, a pick-up unit moves back. (6) It solders to two a sections on the pick-up unit. (7) Disconnect the card wire from connector CN201, CN202, CN101 on the main board. ATTENTION: Please extract the wire after short-circuited of two places on the wire in part a with solder. Please remove the sol- der two places of part a after connecting the wire with CN101 when reassembling. CAUTION: Be sure to solder the short land sections “a” on the pick- up unit before disconnecting the card wire from connec- tor CN101 on the main board. If the card wire is disconnected without attaching solder, the pick-up unit may be destroyed by static electricity. (8) Remove the mechanism assembly by lifting the rear part of the mechanism assembly. Fig.2 Fig.3 Fig.4 Front panel assembly Mechanism assembly Tray Fitting Hole and lever PushPush CN201Main board C C C CN101 Mechanism assembly CN202 Part aPick-up Gear1 Main boardCN101 (No.YD016)1-9 3.1.3Removing the front panel assembly (See Figure 5, Figure 6, Figure 7) Prior to performing the following procedure, remove the top cover and mechanism assembly. (1) Disconnect the card wire from connector CN3 on the power board. (2) Hook b and c are removed respectively, and the front panel assembly is removed. (3) Remove the three