Yamaha-MD-4-S-Service-Manual电路原理图.pdf
SERVICE MANUAL MULTITRACK MD RECORDER PA 011433 HAMAMATSU, JAPAN 1.93K-288 Printed in Japan 99.01 CONTENTS DISCS FOR MD4S5 SPECIFICATIONS6 PANEL LAYOUT 7 DIMENSIONS9 BLOCK DIAGRAM9 CIRCUIT BOARD LAYOUT10 DISASSEMBLY PROCEDURE11 LSI PIN DESCRIPTION13 IC BLOCK DIAGRAM15 CIRCUIT BOARDS18 ERROR MESSAGES 23 INSPECTION SPECIFICATION24 MIDI IMPLEMENTATION CHART30 PARTS LIST OVERALL CIRCUIT DIAGRAM 19981210-79800 RadioFans.CN 收音机爱 好者资料库 MD4S 2 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 WHAT SO EVER! 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. IMPORTANT NOTICE 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 all service required should be performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT:This presentation or sale of this manual to any individual or firm does not constitute authorization, certification, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form. The data provided is belived 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 changes in specification 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 you 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 parts replacement. Recheck all work before you apply power to the unit. WARNING Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. RadioFans.CN 收音机爱 好者资料库 MD4S 3 TO SERVICE PERSONNEL Leakage Current Measurement (For 120 V Models Only). When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. Meter impedance should be equivalent to 1500 ohm shunted by 0.15F. Leakage current must not exceed 0.5 mA. Be sure to test for leakage with the AC plug in both polarities. POLARIZATION (U, C models) This product is equipped with a polarized alternating- current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. INSULATING TABLE EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT WALL OUTLET CAUTION:USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. THIS PRODUCT SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL. PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs a laser. Therefore, be sure to carefully follow the instructions below when servicing. 1. Laser Diode Properties Materlal :GaAlAs Wavelength :780 nm Emission Duration :Continuous Laser Output :max. 44.6W* *This output is the value measured at a distance of about 200 mm from the objective lens surface on the Optical Pick-up Block. 2. When checking the laser diode emission, keep your eyes more than 30 cm away from the objective lens. MD4S 4 English 1THIS LABEL SHOWN ON FIGURE INFORMS THE USER THAT THE APPARATUS CONTAINS A LASER COMPONENT. 2THIS LABEL WARNS THAT ANY FURTHER PROCEDURE WILL BRING THE SERVICE PERSONNEL INTO EXPROSURE WITH THE LASER BEAM. CAUTION:INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED. DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS. Nordic 1DENNA MRKNING (SE FIGUR) UPPLYSER OM ATT DET I APPARATEN INGR EN LASERKOMPONENT AV TYP KLASS 1. 2VARNINGSMRKNING (SE FIGUR) FR STRLNING. INGREPP I APPARATEN BR ENDAST FRETAGAS AV FACKMAN MED KNNEDOM OM LASER. APPARATEN INNEHLLER EN LASERKOMPONENT SOM AVGER STRLNING VERSTIGANDE GRNSEN FR LASERKLASS 1. 1MRKAT ER ANBRAGT SOM VIST I ILLUSTRATIONEN FOR AT ADVARE BRUGEREN OM AT APPARATET INDEHOLDER EN LASERKOMPONENT. 2DETTE MRKAT OM LASEREN ER ANBRAGT P APPARATET SOM EN OPLYSNING OM AT APPARATET INDEHOLDER ET LASERKOMPONENT. VARNING:OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD OCH SPRRAR R URKOPPLADE. STIRRA EJ IN I STRLEN OCH BETRAKTA EJ STRLEN MED OPTISKA INSTRUMENT. VARO!:NKYMTNT AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA LASERSTEILYLLE. L TUIJOTA STEESEEN LK KATSO SIT OPTISEN LAITTEEN LPI. ADVARSEL: USYNLIG LASERSTRLING NR DEKSEL PNES OG SIKKERHEDSLS BRYTES. STIRR IKKE INN I STRLEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER. ADVARSEL: USYNLIG LASERSTRLING VED BNING, NR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. SE IKKE IND I STRLEN-HELLER IKKE MED OPTISKE INSTRUMENTER. CLASS 1 LASER PRODUCT CAUTION: INVISIBLE LASER RADIATION WHEN OPEN. AVOID EXPOSURE TO BEAM. VARNING: OSYNLIG LASERTRLNING NR DENNA DEL R PPNAD. STRLEN R FARLIG. VARO!: NKYMTNT AVATTAESSA OLET ALTTIINA LASERSTEIL YLLE. L KATSO STEESEEN. VARNING: OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD. BETRAKTA EJ STRLEN. VORSICHT! : UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEFFNET.NICHT DEM STRAHL AUSSETZEN. MD Unit H.B.models H.B.models DISC FOR MD4S MD4S 5 Its important that you buy the correct type of disc for use with your MD4S. For 4-track recording and playback, you must use MD DATA discs. Regular MiniDiscs can only be used for 2-track recording and playback (2 TR mode). MD DATA discs are used as a storage media for computers. The MD4S uses the MD DATA audio format to store data on them. Regular MiniDiscs are also referred to as MD discs, although they are used only for music. New MD DATA discs do not require formatting before use with the MD4S. Discs that have been used to store computer data, however, must first be formatted. Regular MiniDisc decks cannot play MD DATA discs. Regular MiniDiscs recorded on the MD4S can be played on a regular MiniDisc deck. MiniDisc recordings made on a regular MiniDisc deck can be edited on the MD4S. MiniDiscs containing songs that were digitally copied from a commercial CD, however, cannot be edited due to the SCMS (Serial Copy Management System) protection system. Songs that were recorded in 8-track mode on a recorder such as the MD8 cannot be played back on the MD4S. MD DATA MiniDisc TypeLogo MD DATA discs are for computer data storage applications. You can purchase them at computer stores. This is the type of disc you should buy for 4-track recording and playback with your MD4S. Note that there are two types available: playback only and rewritable. Buy the rewritable type. MiniDiscs are used only for music. Two types are available: playback only and recordable. The MD4S can record up to two tracks on the recordable type and play the playback only type. Description SPECIFICATIONS MD4S 6 Recorder Mixer General Digital/Audio Rec/Play Locate Cue & review Disc Editing Song Editing Track Editing Title Editing Panel Controls MIDI Display Sampling Frequency: 44.1 kHzCompression: ATRAC Frequency Response: 20 Hz20 kHz, +1 dB, 3 dB THD+N: Less than 0.02 % (1 kHz) S/N: 96 dB typ. 4-track independent simultaneous record/play (Recording time: 37 min) Dubbing with 4-track playback Auto & Manual Punch In/Out (11.6 ms accuracy) Four-track (37 min), Stereo (74 min), or Mono (148 min) record/play Repeat play A-B, Single song, All song Vari-pitch (+/-10 %) Start and End point of SongDirect Time Locate 10 Marker locate points for each songLast Recording In/Out point 0.5x, 2x, 4x, 8x, 16x, 32x play speed Disc Erase Copy, Move, Divide, Combine, Renumber, Erase Track Copy, Part Copy, Track Erase, Part Erase Disc title, Song title REC SELECT buttons 14, BUS button Transport buttons: PLAY, STOP, PAUSE, REC, REHE, SONG SEARCH, EJECT Mode buttons: AUTO PUNCH I/O, EDIT, UTILITY, ADJUST, PITCH, PEAK HOLD, DISPLAY, EXIT CURSOR shuttle/DATA dial Locate buttons: MARK, MARK SEARCH, LAST REC (IN/OUT), SEARCH, SET, REPEAT, AB MIDI IN, OUT, THRU jacks FLD (Fluorescent Display) Inputs Outputs Frequency response EQ MASTER Channel Features MIC/LINE IN (CH1, 2)Balanced phone jack x2 (10 to 50 dB) MIC/LINE IN (CH1, 2)Balanced XLR x2 (10 to 50 dB) MIC/LINE INPUT (CH34)Unbalanced phone jack x2 (10 to 50 dB) LINE INPUT (CH58)Unbalanced phone jack x4 (10 dB) INSERT IN/OUT (CH 1, 2)TRS phone jack x2 (10 dB) 2 TR IN (L, R)Phono x2 (10 dB) TRACK DIRECT OUT (14)Phono x4(10 dB) STEREO OUT (L, R)Phono x2 (10 dB) MONITOR OUT (L, R)Phono x2 (10 dB) AUX SEND (1, 2)Phone jack x2 (10 dB) PHONES OUTStereo phone jack (840 ohm) 20 Hz20 kHz +1, 3 dB 3-band, +/-15 dB (LOW: 100 Hz shelving, MID: Peaking (2.5 kHz), HIGH: 10 kHz Shelving) Stereo Fader (45 mm), Monitor Level control, Monitor Select buttons (2 TR IN, STEREO, CUE), CUE MIX TO STEREO buttons Power Requirements Power Consumption Dimensions (W x H x D) Weight Operating Conditions Supplied Accessories Optional Accessories Output Level USA & Canada: 120 V/60 Hz, Others: 230 V/50 Hz 24 W 413 x 109.5 x 388 mm 5.2 kg Temperature: 5 C35 C (41 F95 F), Humidity: 10 %95 % AC power cord, Owners Manual FC5 Footswitch Refer to the INSPECTION SPECIFICATION Section of this manual. 0 dB is referenced to 0.775 V r.m.s. TOC WRITE REHERECPLAYSTOP PAUSE INOUT SONG SEARCH LAST REC SEARCH MARK SEARCHREPEAT AUTO PUNCH I/O AB DATACURSOR PHONESPUNCH I/O PITCH EJECT ADJUSTEDITUTILITY CH1 BUS CH2 REC SELECT CH3CH4 LRLR PEAK HOLDDISPLAY MULTITRACK MD RECORDER 1234 EXIT ENTER SET MARK 1 1 GAIN CUE HIGH LINE FLIP MIC/ LINE MIC LR 010 15+15 MID 15+15 LOW 15+15 PAN LR AUX 12 PB 10 9 8 7 6 5 4 3 2 1 0 P A N L E V E L 2 2 GAIN CUE HIGH LINE FLIP MIC/ LINE MIC LR 010 15+15 MID 15+15 LOW 15+15 PAN LR AUX 12 PB 10 9 8 7 6 5 4 3 2 1 0 P A N L E V E L 3 3 GAIN CUE HIGH LINE FLIP MIC/ LINE MIC LR 010 15+15 MID 15+15 LOW 15+15 PAN LR AUX 12 PB 10 9 8 7 6 5 4 3 2 1 0 P A N L E V E L 4 4 GAIN CUE HIGH LINE FLIP MIC/ LINE MIC LR 010 15+15 MID 15+15 LOW 15+15 PAN LR AUX 12 PB 10 9 8 7 6 5 4 3 2 1 0 P A N L E V E L 5 / 67 / 8 010010 STEREO MONITOR LEVEL CUE STEREO 2TR IN CUE MIX TO STEREO MONITOR SELECT 10 9 8 7 6 5 4 3 2 1 0 10 9 8 7 6 5 4 3 2 1 0 MINMAX PANEL LAYOUT MD4S 7 Control Panel MD4S 8 POWER switch AC IN AUX SEND 1, 2 jacks MONITOR OUT jacks STEREO OUT jacks 2TR IN jacks TRACK DIRECT OUT 1-4 jacks MIDI IN, OUT, THRU connectors Rear Panel Rear Panel MIC/ LINE INPUT 1, 2 terminals INSERT I/O 1, 2 jacks MIC/ LINE INPUT 3, 4 jacks LINE INPUT 5-8 jacks GAIN control FLIP switch CUE PAN/ CUE LEVEL controls EQ (HIG, MID, LOW) controls AUX control PAN control Fader Level (5/ 6), (7/ 8) controls CUE MIX TO STEREO switch MONITOR SELECT (2TR IN, STEREO, CUE) switches MONITOR LEVEL control STEREO fader Disk transport (REHE, REC, PLAY, PAUSE, STOP/ TOC WRITE) buttons AUTO PUNCH I/O button SONG SEARCH ( , ) buttons A B repeat button LAST REC SEARCH (IN, OUT), SET buttons REPEAT button MARK SEARCH ( , ), MARK buttons Disc compartment BUS button REC SELECT buttons EJECT button PEAK HOLD button DISPLAY button Function (PITCH, ADJUST, EDIT, UTILITY) buttons EXIT button ENTER button DATA dial (DATA + -) CURSOR shuttle PHONES jack PUNCH I/O jack Control Panel Top panel connectors Mono Inputs Stereo Inputs Disc transport section Front Panel Title and function display Time counter mode MIDI indicators Track level meters Stereo level meter Pitch indicator Status indicators TOC EDIT indicator Repeat indicator Marker indicators Time counter IN, OUT indicators Auto punch indicator Track recording indicators CUE MIX indicator Display Display MD4S 9 DIMENSIONS W: 413 H: 109.5 D: 388 Unit : mm BLOCK DIAGRAM MEMORY CONTROL ATRAC AUDIO INTERFACE IC 101 IC 203 ROM IC 104 AD / DA IC 301 IC 302 SRAM IC 103 M-Com IC 109 DRAM IC 102 FL DISPLAY SUB SHEET MD MECHA UNIT MAIN Part TRACK 1 TRACK 2 TRACK 3 TRACK 4 RECORDER STEREO METER MIC/LINE INSERT I/O 1,2 2TR IN L R PAN CUE PAN FLIP LOW HIGHMID GAIN MONITOR SELECT AUX 2TR IN STERO CUE STEREO FADER 1 2 AUX SEND R L R L STEREO OUT MONITOR OUT PHONES 1 2 3 4 TRACK DIRECT OUT MONITOR LEVEL DIRECT 1,2 PB 1,2 CUE 1,2 M/L PB M/L PB STEREOCUEAUX LRLR CUE 1 4PB 1 4DIRECT 1 4 1 2 3 4 L R R L AD1 AD2 AD3 AD4 DA1 DA2 DA3 DA4 PB REC PB REC PB REC PB REC 12 MIC/LINE 3,4 PAN CUE PAN FLIP GAIN AUX FADER DIRECT 3,4 PB 3,4 CUE 3,4 M/L PB M/L PB 1,2 LINE 6,8 LINE 5,7 INPUT LEVEL CUE MIX TO STEREO CUE LEVEL CUE LEVEL IC101IC103,104IC107 IC109 VR101 VR201 VR102 VR202 VR103 VR203 VR104 VR204 LOW HIGHMID VR302 VR402 VR301 VR401 SW103 SW104 VR303 VR403 VR304 VR404 VR105 VR205 VR108 VR109,209 SW105 SW106 SW 107 SW108 VR106,206 VR107,207 VR309,409 VR306,406 VR307,407 VR208 VR305 VR405 VR308 VR408 VR501 VR502 1,7 67213,51,7 3,51,7 IC108IC105,106 3,5127 IC102 1,7 61,7 IC113VR503 67 21 IC114 67 IC120 75 13 21 IC119 67 21 IC118VR504 67 21 IC116 67 21 IC117 67 21 IC112 67 IC111 67 IC112 21 IC115 67 21 IC111 21 IC110 3,51,7 SW101 SW102 KEC-92344 MD4S 10 Mixer Part CIRCUIT BOARD LAYOUT SUB 2/3 SUB 3/3 SUB 1/3MIX 2/2 (INPUT) MIX 1/2 MAIN Power transformer MD mechanical unit MD4S 11 520A: Bind Head Tapping Screw-B 3.0 X 8 MFZN2BL (EP600190) (Fig. 1) Bottom cover 520A520A DISASSEMBLY PROCEDURE 1.Bottom Cover 1-1Remove the twelve (12) screws marked 520A. The bottom cover can then be removed. (Fig. 1) 2.MAIN Circuit Board 2-1Remove the bottom cover. (See Procedure 1.) 2-2Remove the screw marked 530 and the three (3) screws marked 520B. The MAIN circuit board can then be removed. (Fig. 2) 3.MD Mechanical Unit 3-1Remove the bottom cover. (See Procedure 1.) 3-2Remove the four (4) screws marked 520C and the screw marked 520D. The MD mechanical unit can then be removed. (Fig. 2) 4.SUB 1/3 Circuit Board 4-1Remove the SHUTTLE knob and JOG knob. (Fig.3) 4-2Remove the bottom cover. (See Procedure 1.) 4-3Remove the MD mechanical
