Jvc-UXP-7-Service-Manual电路原理图.pdf
1-1UX-P7SERVICE MANUALMICRO COMPONENT SYSTEMNo.21009Jul. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.UX-P7UX-P7ContentsSafety precautionsPreventing static electricityImportant for laser productsDisassembly methodMain adjustmentFlow of functional operation until TOC read (CD)Maintenance of laser pickupReplacement of laser pickup Description of major ICsInternal connection of display1-21-41-61-71-151-191-201-201-211-40This service manual is printed on 100% recycled paper.Area SuffixAUFUPUSUWUYAustraliaChinaKoreaSingaporeSouth AfricaArgentinaSP-UXP7 CA-UXP7 SP-UXP7COMPACTDIGITAL AUDIOCD TAPE FM/AMMICRO COMPONENT SYSTEM UX·P7CD-R/RW PLAYBACKMD/AUXTIMERCLOCKSTANDBY / ONSTANDBY / ONVOLUMEAHB PROSOUNDAUTO REVERSERECRECREV.MODEPHONESSLEEPSTANDBY/ONMD/AUXFM/AMTAPECDDISPLAYDIMMERREPEATRANDOMPROGFM MODEAUTOPRESETSOUNDMODECDCANCEL MULTI KEY SETRM-SUXP7U REMOTE CONTROLVOLUMEAHB PROLEVEL/1-2UX-P71. 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 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 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 methodPlug 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 eachexposed 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 exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 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)1-3UX-P71. Service should be performed by qualified personnel only.2. This equipment has been designed and manufactured to meet international safety standards.3. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.4. Repairs must be made in accordance with the relevant safety standards.5. It is essential that safety critical components are replaced by approved parts.6. If mains voltage selector is provided, check setting for local voltage.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. 2. Any unauthorised design alterations or additions will void the manufacturer's guarantee ; furthermore the manufacturer cannot accept responsibility for personal injury or property damage resulting therefrom.3. Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts shown in the Parts List of the Service Manual and 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.!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.(U.K only)1-4UX-P7Preventing static electricityElectrostatic 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.1.1. Grounding to prevent damage by static electricityStatic 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. 1.1.1. Ground the workbench1. 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.1.1.2. Ground yourself1. Use an anti-static wrist strap to release any static electricity built up in your body. 1.1.3. Handling the optical pickup1. 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 check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode. 1.2. 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 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. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn itConductive material (conductive sheet) or iron plate(caption)Anti-static wrist strap1-5UX-P71.3. Cautions on removing the CD traverse unit* For removing the CD traverse unit in detail, refer to the “Adjustment Method“ section of this manual.1. Before disconnecting the flexible wire from the connector CN601 on the CD SERVO board, solder the part shown in the figure below.(Note:If the flexible wire is disconnected from the CN601 without presoldering, it may cause breakdown of the CD pickup assembly.)2. When reassembling the CD traverse unit, be sure to remove the solder from the soldered part after reconnecting the flexible wire to the CN601. CD SERVO boardCD SERVO boardSoldering partCN601CN601C601C602C603C604C605C606C607C610C611C612C613C614C615C616C617C619C620C621C622C623C624C631C632C633C641 C642C643B619C651C652C653C654C655C656C657C658C661C663C664C665C667C668C669C670C671C672C673C676C677C679C680C691C692C693C694C695C696C699C801C802C811C812C813C814C815C821 C822C823C824C831C832C833CN601CN651CN652CN801D831R648IC652IC801IC802L831Q631Q801R601R602R603R604R605R606R610R611R612 R613R617R618R619R620R621R631R632R634R635R636R641R642R643R647R651R652R653R654R655R656R657R658R659R661R662R663R664R665R666R667R668R669R670R682R683R685R691R692R695R696R701R702R703R704R705R706R707R708R709R710R801R802R803R804R805R806R807 R808R809R812R821R822R823R824R831W605CN606X651B604B616B614R813C816B613B615B610B612B617B618IC601R607B601B603B602B611B609B608B607B606B605D601D602R681C681 R684MUTEFLAGCDDGBLKCK/RESTMLDMDATAMCLKCDDGSUBQSQCK/RSTSTATFM+RESTSM-SM+D.GNDFM-11111BEBEC316ARFA.GNDF- T- T+ F+ GND VR LD MD T2 K F1 NC T1 SR F2115T02SCDSCDCDDG13LM+OPSWGNDCLSWLM-M.GNDSW10SW10CLOSEOPENOPSWCLSECD+BCD+BCDLA.GNDA.GNDCDR5111612141611716321224131-6UX-P7Important for laser products1.CLASS 1 LASER PRODUCT2.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 theLaser 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 defeated. 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.VARNING : Osynlig laserstrålning är denna del är öppnad och spårren är urkopplad. Betrakta ej strålen.VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle.Älä katso säteeseen.ADVARSEL : Usynlig laserstråling ved åbning , når sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling.ADVARSEL : Usynlig laserstråling ved åpning,når sikkerhetsbryteren er avslott. unngå utsettelse for stråling.REPRODUCTION AND POSITION OF LABELSWARNING LABEL!CAUTIONPlease use enough caution not to see the beam directly or touch it in case of an adjustment or operationcheck.1-7UX-P7Remove the six screws A on the back of the body.Remove the two screws B on the side of the body.Pull both sides of the metal cover outward and lift the rear part of the cover.1.2.3.Disassembly methodRemoving the metal cover (See Fig.1 and 2)Prior to performing the following procedure, remove the metal cover.Remove the two screws C on the back of the body.1.Removing the rear cover (See Fig.3)Fig.1Fig.2Fig.3AAAAAMetal coverMetal coverB 2CCRear coverRear panel1-8UX-P7Prior to performing the following procedure, remove the metal cover.Disconnect the card wire from connector CN1 on the tuner board.Remove the screw D on the right side of the body.Remove the two screws E on the rear panel.1.2.3.Removing the tuner board (See Fig.4 and 5)Prior to performing the following procedure, remove the metal cover and the rear cover.Disconnect the card wires from connector CN903, CN904 and the wire from CN905 on the main board on the upper side of the body.Remove the screw D attaching the tuner board and the CD mechanism on the right side of the body.Remove the two screws F attaching the rear panel and the CD mechanism on the back of the body.Move the rear part of the CD mechanism assembly upwards to disengage the two joints a and release from the rear panel.Pull the front panel toward the front and move the rear part of the CD mechanism assembly upwards. Then pull out the CD mechanism assembly from the front panel backward.1.2.3.4.Removing the CD mechanism assembly (See Fig.6 to 8)To remove the CD mechanism assembly efficiently, disconnect the card wire connecting the tuner board with the main board in advance.REFERENCE: Fig.4Fig.5Fig.6Fig.7DCN1boardERear coverRear panelRear panelTuner boardCard wiresCD mechanism assemblyFront panel assemblyCN903CN904Main boardCN905CD mechanism assemblyTuner boardD1-9UX-P7Prior to performing the following procedure, remove the metal cover, rear cover and the CD mechanism assembly.Remove the nine screws G attaching the rear panel.Disconnect the wire from connector CN908 and the card wire from CN902 on the main board.Disengage the lower two joints b on each side of the rear p
