Yamaha-DVDC-740-Service-Manual电路原理图.pdf

100827 SERVICE MANUAL DVD PLAYER This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated. WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certifi- cation or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form. The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit. IMPORTANT NOTICE DVD-C740/DV-C6660 SERVICE MANUAL I CONTENTS TO SERVICE PERSONNEL .23 PREVENTION OF ELECTROSTATIC DISCHARGE .4 LOCALE MANAGEMENT INFORMATION .4 FRONT PANELS .5 REAR PANELS .6 SPECIFICATIONS .7 DIMENSIONS .8 INTERNAL VIEW .8 DISASSEMBLY PROCEDURES .910 DIAGNOSTIC SOFTWARE.1119 IC DATA .2025 BLOCK DIAGRAM .27 PRINTED CIRCUIT BOARD .2836 SCHEMATIC DIAGRAM .3754 PARTS LIST .5462 DVD-C740 /DV-C6660 RadioFans.CN 收音机爱 好者资料库 DVD-C740/DV-C6660 DVD-C740 /DV-C6660 2 ITO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. GMeter impedance should be equivalent to 1500 ohm shunted by 0.15F. GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. AC LEAKAGE TESTER OR EQUIVALENT EQUIPMENT UNDER TEST INSULATING TABLE WALL OUTLET WARNING: Laser Safety This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be used during servicing of the unit. 1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from the laser pick-up unit at all times. Do not stare at the laser beam at any time. 2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual. 3) CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. Laser Emitting conditions: 1) When the Top Cover is removed, and the STANDBY/ON SW is turned to the ON position, the laser component will emit a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through the lens of the laser pick-up unit. Do not attempt any servicing during this period! If no disc is detected, the laser will stop emitting the beam. When a disc is loaded, you will not be exposed to any laser emissions. 2) The laser power level can be adjusted with the VR on the pick-up PWB, however, this level has been set by the factory prior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this manual. Adjustment of this control can increase the laser emission level from the device. THE DVD AUDIO/VIDEO PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL. RadioFans.CN 收音机爱 好者资料库 DVD-C740/DV-C6660 DVD-C740 /DV-C6660 3 Laser Diode Properties Type:Semiconductor laser GaAlAs Wave length:650 nm (DVD) 780 nm (VCD/CD) Output Power:0.8 mW (DVD) 0.3 mW (VCD/CD) Beam divergence:60 degree VARO!: AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NKYMTTMLLE LASER-STEILYLLE. L KATSO STEESEEN. VARNING! : OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD OCH SPRREN R URKOPPLAD. BETRAKTA EJ STRLEN. Optical pick-up CLASS 1 LASER PRODUCT LASER KLASSE 1 PRODUKT LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT PRODUIT LASER DE CLASSE 1 CAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN. AVOID EXPOSURE TO BEAM ADVARSEL SYNLIG OG USYNLIG LASERSTRLING VED BNING UNDG UDSTTELSE FOR STRLING ADVARSEL SYNLIG OG USYNLIG LASERSTRLING NR DEKSEL PNES UNNG EKSPONERING FOR STRLEN VARNING SYNLIG OCH OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD BETRAKTA EJ STRLEN VARO ! AVATTAESSA OLET ALTTIINA NKYVLLE JA NKYMTTMLLE LASER STEILYLLE, L KATSO STEESEEN VORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEFFNET NICHT DEM STRAHL AUSSETSEN DANGER VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM ATTENTION RAYONNEMENT LASER VISIBLE ET INVISIBLE EN CAS DOUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU DVD-C740/DV-C6660 DVD-C740 /DV-C6660 4 I PREVENTION OF ELECTROSTATIC DISCHARGE I LOCALE MANAGEMENT INFORMATION Locale Management Information : This DVD player is designed and manufactured to respond to the Locale Management Information that is recorded on a DVD disc. If the Locale number described on the DVD disc does not correspond to the Locale number of this DVD player, this DVD player cannot play this disc. This product incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited. q w r w t t r w y e t The laser diode in the traverse unit (optical pickup) may be damaged due to static electricity from clothes or the human body. Use caution to prevent electrostatic damage when servicing or handling the laser diode. 1. Grounding for electrostatic damage prevention 1. Worktable grounding Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed. 2. Human body grounding Use an anti-static wrist strap to discharge the static electricity from your body. 2. Handling of the optical pickup 1. To prevent damage to the optical pickup replacement parts during transportation and before installation, both ends of the laser diode are short-circuited. After installing the new part, remove the short circuit according to the correct procedure in this service manual. 2. Do not use a tester to check the laser diode in the optical pickup. The power supply in the tester will damage the laser diode. 3. Handling Precautions for the Traverse Unit (Optical Pickup) 1. Handle the traverse unit (optical pickup) gently, as it is an extremely high-precision assembly. 2. The flexible cable lines may break if an excessive force is applied to it. Use caution when handling the cable. 3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor. 1M Conductive material (sheet) or steel sheet Anti-static wrist strap DVD-C740/DV-C6660 DVD-C740 /DV-C6660 5 I FRONT PANELS M DVD-C740 (U, A models) M DV-C6660 (U, A models) U only U model PROGRESSIVE A model SHUFFLE U only U model PROGRESSIVE A model SHUFFLE G DVD-C740/DV-C6660 DVD-C740/DV-C6660 DVD-C740 /DV-C6660 6 M DVD-C740 U model M DVD-C740 A model M DV-C6660 U model M DV-C6660 A model I REAR PANELS DVD-C740/DV-C6660 DVD-C740 /DV-C6660 7 PLAYBACK SYSTEM DVD Video DVD+RW DVD+R Video CD and SVCD CD (CD-R and CD-RW) MP3 CD TV STANDARD (PAL/50Hz) (NTSC/60Hz) Number of lines625525 PlaybackMultistandard(PAL/NTSC) VIDEO PERFORMANCE Component Video output Y: 1Vpp into 75 ohm Pr/Cr Pb/Cb: 0.7Vpp into 75 ohm S-Video outputY: 1Vpp into 75 ohm C: 0.3Vpp into 75 ohm Video output1 Vpp into 75 ohm Black Level ShiftOn/Off Video ShiftLeft/Right AUDIO FORMAT Dolby Digital/Compressed Digital DTS/MPEG PCM16, 20, 24 bits fs, 44.1, 48, 96 kHz MP396, 112, 128, 256 kbps and (Joliet)variable bit rate fs 32, 44.1, 48kHz Full decoding of Dolby Digital and DTS multi channel sound Analog Stereo Sound Dolby Surround-compatible downmix from Dolby Digital multi-channel sound 3D Sound for virtual 5.1 channel sound on 2 speakers AUDIO PERFORMANCE DA Converter24 bits DVDfs 96 kHz2 Hz - 44 kHz CD/Video CDfs 44.1 kHz2 Hz - 20 kHz S-Video CDfs 48 kHz2 Hz - 22 kHz fs 44.1 kHz2 Hz - 20 kHz Signal-Noise (1kHz)105 dB Dynamic Range (1kHz)100 dB Harmonic Distortion + Noise (1kHz)0.003% MPEG MP3MPEG Audio L3 CONNECTIONS Y Pb/Cb Pr/Cr (480i/p)Cinch 3x (green, blue, red) S-Video OutputMini DIN, 4 pins Video OutputCinch (yellow) Audio L+R outputCinch (white/red) x2 Subwoofer outputCinch (black) Digital Output1 coaxial, 1 optical IEC958 for CDDA / LPCM IEC1937 for MPEG1/2, Dolby Digital, DTS CABINET Dimensions (w x h x d)435 x 116 x 425 mm (17-1/8 x 4-9/16 x 16-3/4) WeightApprox. 6 Kg (13 lbs 3 oz) POWER SUPPLY Power inputU.S.A. model120V, 60Hz Australia model240V, 50Hz Power usageApprox. 20W Power usage standby< 5W Finish DVD-C740Black Color (U, A models) DV-C6660Black Color (U, A models) Silver Color (U, A models) Accessories Remote Control, Batteries, Audio/Video Cable * typical playing time for movie with 2 spoken languages and 3 subtitle languages Specifications subject to change without prior notice. Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories. “DTS” and “DTS Digital Out” are trademarks of Digital Theater Systems, Inc. U . USA model A . Australian model I SPECIFICATIONS “DCDi” is a trademark of Faroudia, a division of Sage Inc. DVD-C740/DV-C6660 DVD-C740 /DV-C6660 8 Unit : mm (inch) 435 (17-1/8) 116 (4-9/16) 425 (16-3/4) I INTERNAL VIEW q POWER SUPPLY UNIT w CM UNIT e CLAMPER ASSY r AV P.C.B. t Not applied to these models y TRAY ASSY u MONOBOARD P.C.B. I DIMENSIONS ertqw yu DVD-C740/DV-C6660 9 I DISASSEMBLY PROCEDURES See exploded view for item numbers Mounting Dismounting A/V board 1001 Remove flex and cable connections. Remove 4 screws 275 (skt cinch ,optical to back- plate) and screw 280. (S-video to back-plate) Release 2 screw 190. (board to bracket) Dismount board. Front Standby board 2000 (3) Remove 2 screws 110. (Board to Front cabinet) Remove cable connection. Dismount board. Front Display board 2000 (1) Remove 8 screws 100. (Board to Front cabinet) Remove cable connections. Dismount board. Front Panel 0001 Remove cable connection. Unlock Front panel from frame by releasing successively 4 snaps. (2 on the side and bottom) Place Front panel in front of the set ( service position ). Top Cover 300 Remove 4 screws 310 and 3 screws 305 Lift top cover from rear side to remove. Power supply unit 1005 Remove cable connections. Remove 2 screws 185. (Board to bottom frame) Release spacer locking. (Board to bottom frame) Dismount board. Monoboard1020 Remove flex and cable connections from Changer module to Monoboard. Remove 4 screws 200. Dismount Monoboard. Front Eject board 2000 (2) Remove 3 screws 115. (Board to Front cabinet) Remove cable connection. Dismount board. Tray Assy Removes stopper screw 10 on the Tray. Open Tray (See instruction for manual eject of tray) Gently pull the tray out. CM Unit Remove AV board 1001 and Monobaord 1020. Remove 5 screws 150. (CM module to bottom frame) Dismount CM unit Clamper Assy 0004 Remove 2 screws 12. (Clamper to CM unit ) Dismount clamper assy. Holder/VAM Assy Remove 2 screws 11. (Holder/VAM Assy to CM unit) Dismount holder/VAM assy. Motor driver board 1021 Flip the CM unit. Release 3 catches. Remove cable connections Dismount board. 1.7 mmT6 2.7 mmT10 3.8 mmT20 When disassembling, use the special screw driver with tip shape in figure. DVD-C740/DV-C6660 10 Top Cover 1 3 2 Tray HOW TO MANUALLY EJECT THE TRAY 1. Remove the Top Cover. 2. Move the gear in the anti-clockwise direction with your finger until the tray is ejected. 3. Gentlely pull the tray out. 4 Fig. 2 Fig. A GPrecaution for installation of the Tray Assy. On Tray Assy setting. Check the Direction of marking “L” on gear according to this drawing. Gear/L0 Front Panel Gear/L01 Marking 1. Removal of Tray Assy a. Remove 1 screw ( r ) in Fig. 1. b. Turn Gear/L0 as shown in Fig. 2 counter clockwise gradually until immediately before the tray starts to move and stop it there. CAUTION:Gear/L0, if turned counter clockwise con- tinuously, will mesh with the gear of the tray and the tray will come