Jvc-RSWP-1-T-Service-Manual电路原理图.pdf
SERVICE MANUALCD PORTABLE SYSTEMNo.20943May. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.RS-WP1WTRS-WP1WTContentsSafety PrecautionsImportant for laser productsPreventing static electricityDisassembly methodAdjustment methodFlow of functional operation unit Toc readMaintenance of laser pickupReplacement of laser picupDescription of major ICs1-21-31-41-51-171-211-221-221-23SLEEPCLOCK TIMERTIMERON/OFFPROGRAMRANDOMREPEATBANDDISPLAYAHB PROREVERSE MODE MULTI CONTROLFM MODEREW FFRM-SRSWP1J REMOTE CONTROLTAPE TUNERC DDOWN UP SETAUXVOLUMEBASS/TREBLESTAND BY/ONAUTOPRESETVOLUMEVOLUMEAUXTUNERTAPECDASPSPLASHRESISTANTANTI-SHOCKPROTECTIONOPENONETOUCH RECM ULTI CONTROLREW FFSTANDBYCD PORTABLE SYSTEM RS-WP1BANDSTANDBY/ONA.P.OFFAreas suffixJ -U.S.ARS-WP1WT1-21. 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)RS-WP1WT1-3Important 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 LABELDANGER : Invisibie laser radiation when open and interlock or defeated.AVOID DIRECT EXPOSURE TO BEAM (e)VARNING : Osynlig laserstrålning är denna del är öppnad och spårren ärurkopplad. Betrakta ej strålen. (s)VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle.Älä katso säteeseen. (d)ADVARSEL :Usynlig laserstråling ved åbning , når sikkerhedsafbrydere er ude af funktion. Undgå udsættelse for stråling. (f)CLASS 1LASER PRODUCT!CAUTIONPlease use enough caution not to see the beam directly or touch it in case of an adjustment or operationcheck.CLASS 1LASER PRODUCTRS-WP1WT1-4Preventing static electricity1.Grounding to prevent damage by 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.2.About the earth processing for the destruction prevention by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players. Be careful to use proper grounding in the area where repairs are being performed. 2-1 Ground the workbenchGround 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.2-2 Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your body. 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. 4.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 strapCN611Short circuit landPrior to disconnecting the flexible wire extending from the pickup, solder it to the short circuit land to prevent damage to the pickup.CAUTION: RS-WP1WT1-5Remove the nine screws A attaching the rear panel assembly on the back of the body.Pull out the front panel assembly and the rear panel assembly. Disconnect the speaker terminal on the front side and connector CN112 on the connection board on the rear side at the same time.1.2.Disassembly methodRemoving the front panel assembly / rear panel assembly (See Fig.1)Prior to performing the following procedures, remove the rear panel assembly.Disconnect the card wire from connector CN614 and the wire from CN624 on the CD mechanism assembly respectively.Remove the three screws B attaching the CD mechanism assembly section.1.2.Removing the CD mechanism assembly section (See Fig.2)Prior to performing the following procedures, remove the rear panel assembly and the CD mechanism assembly section.Disconnect the card wire from connector CN33, CN34 on the cassette mechanism assembly.Remove the four screws C and the cassette mechanism assembly with the wire cover.1.2.Removing the cassette mechanism assembly (See Fig.3)Fig.1Fig.2Fig.3AAAAAAConnection boardCN112Rear panelassemblyBBBCN624CN614CD mechanism assembly sectionCassette mechanism assemblyCN33CN34CCCCassette mechanism assemblyWire coverRS-WP1WT1-6Prior to performing the following procedures, remove the rear panel assembly.Disconnect the card wire from connector CN921 on the function switch board.Remove the two screws D and move the function switch board in the direction of the arrow to disengage the two joints a.1.2.Removing the function switch board (See Fig.4)Prior to performing the following procedures, remove the rear panel assembly.Remove the LCD spare board while pulling each joint hook b outward.Pull out the LED board.If necessary, unsolder FW925 soldering the wire on the LED board.1.2.Removing the LCD spare board / LED board (See Fig.5 and 6)Fig.5Fig.6Fig.4DJoint aJoint aFunction switch boardCN921LCD boardJoint hook bJoint hook bLCD boardLCD spare boardLED boardFW925RS-WP1WT1-7Prior to performing the following procedures, remove the rear panel assembly and the function switch board.Remove the four screws E attaching the bracket.Disconnect the card wire from connector CN421, CN422 and the wire from CN913 on the LCD board respectively.Disconnect the wire from connector CN624 on the CD mechanism assembly.Remove the two screws F attaching the LCD board (The LCD spare board and the LED board are still attached to the LCD board).1.2.3.4.Removing the LCD board (See Fig.7 and 8)Prior to performing the following procedures, remove the rear panel assembly.Remove the two screws G attaching the headphone jack board bracket.Pull out the headphone jack board bracket and the headphone cover at the same time.Remove the two screws H attaching the headphone jack board.Disconnect the wire from connector CN711 on the headphone jack board.1.2.3.4.Removing the headphone jack board (See Fig.9 and 10)Fig.7Fig.8Fig.9Fig.10LCD boardEEBracketLCD boardCN913FFCN421CN422CN624Headphone jack bracketHeadphone coverGGHeadphone jack boardCN711HRS-WP1WT1-8Prior to performing the following procedures, remove the rear panel assembly, the CD mechanism assembly section and the LCD board.Remove the two screws J attaching the main board on the back of the rear panel assembly.Disconnect the card wire from connector CN43 and CN44 on the main board on the inside of the rear panel assembly.Disconnect the wire from connector CN101 and CN103 on the power board.Disconnect the wire from connector CN401 on the battery board.Remove the six screws K attaching the main board. Disconnect the card wire from connector CN91 on the reverse side of the main board.Remove the screw L and disconnect the sub (1) board from connector CN341 on the main board.Disconnect the sub (2) board from connector CN371 on the main board.1.2.3.4.5.6.7.Removing the main board / sub (1) board / sub (2) board (See Fig.11 to 13)Fig.11Fig.12Fig.13Rear panel assemblyJK KCN44CN91CN43Power boardKMain boardKCN103CN101Battery boardCN401LSub (1) boardCN341Sub (2) boardCN371Main boardRS-WP1WT1-9Prior to performing the following procedure, remove the rear panel assembly.Remove the screw M attaching the remocon board and disconnect the wire from connector CN913 on the LCD board.1.Removing the remocon board(See Fig.14)Prior to performing the following procedures, remove the rear panel assembly.Disconnect the card wire from connector CN1 and the antenna wire from TP1 on the tuner board respectively.Remove the four screws N attaching the tuner board.1.2.Removing the tuner board (See Fig.15)Fig.14Fig.15Remocon boardMLCD boardCN913Tuner boardCN1TP1Antenna wireNNRS-WP1WT1-10Prior to performing the following procedures, remove the rear panel assembly.Disconnect the wire from connector CN101, CN102 and CN103 on the power board.Remove the four screws O attaching the power board.Remove the three screws O attaching the heat sink.Disengage the two joints c and remove the heat sink from the power board.1.2.3.4.Removing the power board (See Fig.16 to 18)Fig.16Fig.17Fig.18OOOPower boardCN103CN101CN102OJoint cJoint cPower boardHeat sink
