Jvc MXDVA 5 Service Manual

Page 1

MX-DVA5 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 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. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturer`s 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 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 safety 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 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 re-assembling. 5. Leakage currnet check (Electrical shock hazard testing) After re-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 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 leakage 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 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 meausre 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. 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. Good earth groundPlace 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 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 J and C version)

Page 2

MX-DVA5 1-3 Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 3.CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The compact disc player uses invisible laserradiation and is equipped with safety switches whichprevent emission of radiation when the drawer is open and the safety interlocks have failed or are de feated. It is dangerous to defeat the safety switches.5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Reproduction and position of labels WARNING LABEL ! CAUTIONPlease use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. CLASS 1 LASER PRODUCT

Page 7

MX-DVA5 1-8 Prior to performing the following procedure, remove the metal cover and the CD / DVD changer unit. Remove the four screws I attaching the heat sink cover on the back of the body. Remove the heat sink cover. Remove the four screws J attaching the heat sink, amp. board and DVD power board to the rear panel on the back of the body. Remove the two screws K attaching the speaker terminal to the rear panel on the back of the body. Disconnect the card wire from connector ACW1 and the harness from connector ACW2 on the amp. board. Disconnect the harness from connector LCW5 and LCW4 on the DVD power board. After moving the heat sink upward, remove the claws. Then pull out the heat sink, amp. board and DVD power board inward. 1. 2. 3. 4. 5. 6. Removing the heat sink, amp. board and DVD power board (See Fig.10 to 12) Fig.8 Fig.9 Front panel assembly G E Main board H Joint b Joint b Joint cBottom side Fig.10 Fig.11 Rear panel Heat sink cover Heat sink Speaker terminal Tuner terminal KL I I J J Fig.12 ACW1 Rear panel Amp. board ACW2LCW5 LCW4 DVD power board

Page 11

MX-DVA5 1-12 Disconnect the card wire from connector RCW1 of the CD /DVD servo board. Turn the black loading pulley gear on the under side of the CD / DVD changer unit in the direction of the arrow and draw the CD / DVD tray toward the front until it stops. Disconnect the card wire from connector DCW1 of the CD / DVD servo board on the upper side of the CD / DVD changer unit. Push down the two tray stoppers marked a and pull out the CD / DVD tray. 1. 2. 3. 4. Align the gear-cam with the gear-tray as shown fig.3, then mount the CD / DVD tray. When assembling the CD / DVD tray, take extreme care not engage with gear - synchro. 1. 2.Prior to performing the following procedure, remove the CD / DVD changer unit. Removing the CD / DVD tray (See Fig.1 to 3) Reinstall the CD / DVD tray (See Fig.4 and 5) Fig.2Fig.1 Fig.3 Fig.4 Fig.5 Loading pulley gear CD / DVD tray CD / DVD tray CD / DVD tray Gear-convertGear-convertGear-cam Gear-tray Gear-synchro Gear-tray Gear-trayGear-cam timing point CD / DVD tray CD / DVD servo board DCW1 a (Tray stopper) a (Tray stopper) CD / DVD servo board RCW1

Page 41

MX-DVA5 H AB C DE FG 12 3 45 2-2MX-DVA5 Standard schematic diagrams SHEET 1/9 Main section MAIN signal TUNER signal TAPE REC. signal TAPE P.B. signal CD signal Parts are safety assurance parts. When replacing those parts make sure to use the specified one. SHEET 2/8 PRE MAIN signal

Page 62

MX-DVA5 3-5 12 8 2 19 7 6 5 4 3 1 15 25 10 9 20 21 11 14 22 23 16 13 17 24 DVD changer mechanism assembly and parts list Block No. M M M 2 Tray stopper DVD boardBase main

Page 65

MX-DVA5 3-8 Item Parts number Parts nameArea Electrical parts list(Main board) Remarks Block No. 01 A AUX 3722-000377 JACK-RCA CR 36 2001-000290CARBON RESISTOR EC 1 2202-000148 C CAPACITOREC 2 2202-000817 C CAPACITOR EC 3 2401-002180 E.CAPACITOR EC 4 2401-002180 E.CAPACITOREC 5 2202-000797 C CAPACITOR EC 6 2202-000809 C CAPACITOR EC 7 2202-000797 C CAPACITOREC 8 2401-001889 E CAPACITOR EC 9 2401-000907 E-CAPACITOR EC 10 2401-001465 E.CAPACITOR EC 11 2202-000854 C CAPACITOR EC 12 2202-000797 C CAPACITOR EC 15 2202-000797 C CAPACITOR ECW 1 3711-001062CONNECTOR ED 1 0401-000101DIODE ED 2 0401-000101DIODE EIC 1 1204-001730 IC EQ 1 0501-000398TRANSISTOR C945 EQ 2 0504-000118TRANSISTOR R1003 EQ 3 0504-000118TRANSISTOR R1003 ER 2 2001-000522CARBON RESISTOR ER 3 2001-000290CARBON RESISTORER 4 2001-000977CARBON RESISTOR ER 5 2001-000522CARBON RESISTOR ER 6 2001-000563CARBON RESISTORER 7 2001-000429CARBON RESISTOR ER 8 2001-000734CARBON RESISTOR ER 9 2001-000008CARBON RESISTORER 10 2001-000290CARBON RESISTOR ER 11 2001-000734CARBON RESISTOR ER 12 2001-000331CARBON RESISTORER 13 2001-000290CARBON RESISTOR ER 14 2001-000319CARBON RESISTOR ER 15 2001-000802CARBON RESISTOR ER 16 2001-000034CARBON RESISTOR ER 25 2001-000786CARBON RESISTOR EZD 1 0403-000354 ZERNER DIODE FC 9 2401-000419 E.0CAPACITOR FC 11 2401-001975 E.0CAPACITOR FC 15 2301-000361 C.CAPACITOR FC 16 2301-000375 C.CAPACITOR FC 17 2401-001954 E.CAPACITOR FC 23 2401-000419 E.0CAPACITOR FC 31 2401-000759 E.CAPACITOR FC 32 2401-001954 E.CAPACITOR FC 51 2202-000806 C.CAPACITORFC 52 2202-000806 C.CAPACITOR FC 53 2401-001912 E.CAPACITOR FC 54 2401-001912 E.CAPACITORFC 57 2401-001975 E.CAPACITOR FCW 13708-000122CONNECTOR FCW 23708-001094CONNECTORFCW 33708-000258CONNECTOR FC1L2201-000368 C.CAPACITOR FC1R2201-000368 C.CAPACITOR FC10L 2301-000216 C.CAPACITOR FC10R2301-000216 C.CAPACITOR FC12L 2202-000781 C.CAPACITOR FC12R2202-000781 C.CAPACITOR FC13L 2202-000806 C.CAPACITOR FC13R2201-000368 C.CAPACITOR FC2L2401-001912 E.CAPACITOR FC2R2401-001912 E.CAPACITOR FC251 2401-001912 E.CAPACITORFC252 2401-001912 E.CAPACITOR FC253 2401-001912 E.CAPACITOR FC3L2401-001912 E.CAPACITORFC3R2401-001912 E.CAPACITOR FC4L2401-001912 E.CAPACITOR FC4R2401-001912 E.CAPACITORFC5L2401-001912 E.CAPACITOR FC5R2401-001912 E.CAPACITOR FC56L 2401-001912 E.CAPACITOR FC56R2401-001912 E.CAPACITOR FC57L 2201-000368 C.CAPACITOR FC57R2201-000368 C.CAPACITOR FC6L2401-002180 E.CAPACITOR FC6R2401-002180 E.CAPACITOR FC7L2401-001912 E.CAPACITOR FC7R2401-001912 E.CAPACITOR FC8L2301-000454 C.CAPACITOR FC8R2301-000454 C.CAPACITOR FC9L2301-000216 C.CAPACITOR FC9R2301-000216 C.CAPACITOR FD 2 0401-000101DIODEFD 3 0401-000101DIODE FIC 1 1204-001776 IC FIC 2 1201-000163 ICFIC 4 1201-000163 IC FIC 5 1201-000163 IC FQ 4 0501-000398TRANSISTOR C945 FQ 12 0504-000145TRANSISTOR R2003 FQ11L 0504-000122TRANSISTOR R1009 FQ11R 0504-000122TRANSISTOR R1009 FQ151 0504-000145TRANSISTOR R2003 FQ152 0504-000118TRANSISTOR R1003 FR 9 2001-000027CARBON RESISTOR FR 18 2001-000515CARBON RESISTOR FR 20 2001-000515CARBON RESISTOR FR 21 2001-000864CARBON RESISTOR FR 22 2001-000864CARBON RESISTOR FR 23 2001-000773CARBON RESISTOR FR 24 2001-000290CARBON RESISTOR FR 25 2001-000429CARBON RESISTOR FR 26 2001-000850CARBON RESISTOR FR 28 2001-000645CARBON RESISTOR FR 51 2001-000515CARBON RESISTOR FR 52 2001-000786CARBON RESISTOR FR 53 2001-000515CARBON RESISTORFR 54 2001-000786CARBON RESISTOR FR 55 2001-000890CARBON RESISTOR FR 56 2001-000411CARBON RESISTORFR 57 2001-000273CARBON RESISTOR FR 58 2001-000273CARBON RESISTOR FR 59 2001-000411CARBON RESISTORFR 61 2001-000429CARBON RESISTOR FR 62 2001-000429CARBON RESISTOR FR 81 2001-000786CARBON RESISTOR FR 82 2001-000591CARBON RESISTOR FR1L2001-000411CARBON RESISTOR FR1R2001-000411CARBON RESISTOR FR10L 2001-000429CARBON RESISTOR FR10R2001-000429CARBON RESISTOR FR11L 2001-000429CARBON RESISTOR Item Parts number Parts nameArea Remarks A

Page 83

MX-DVA5 3-26 Packing materials and accessories parts list Block No. M M M 5 Block No. M M M 6 A7P6 P9A8 P8P7 P3 P5 P4 P2(A1 A9) P1