JVC-FSSD990R-cs-sm维修电路原理图.pdf

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1、SERVICE MANUAL COMPACT COMPONENT SYSTEM No.20923 Mar. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. FS-SD550R / FS-SD770R / FS-SD990R Contents Safety Precautions Important for laser products Preventing static electricity Dismantling and assembling the traverse unit Disassembly method Maintenance

2、 of laser pickup Replacement of laser pickup Flow of functional operation unit TOC read Method of connecting treatment device wire Description of major ICs 2-1 2-2 2-3 2-4 2-5 2-14 2-14 2-15 2-16 2-17 REMOTE CONTROL DIMMERSLEEP DISPLAYFM MODE AHB PROCD PROGRAM DOOR SLIDE AUTO PRESET REPEATRANDOM BAS

3、STREBLECANCEL UP SET DOWN MD/AUXFM / AM VOLUME CD FADE MUTING PTY/EONDISPLAY MODE FS-SD550R FS-SD770R, FS-SD990R REMOTE CONTROL DIMMERSLEEP DISPLAYFM MODE AHB PROCD PROGRAM DOOR SLIDE AUTO PRESET REPEATRANDOM BASSTREBLECANCEL UP SET DOWN MD/AUXFM / AM VOLUME CD FADE MUTING PTY/EONDISPLAY MODE The di

4、fference between FS-SD550R and FS-SD770R FS-SD990R is only the speaker systems. The difference between FS-SD770R and FS-SD990R is cabinets of the speaker. FS-SD550R FS-SD770R / FS-SD990R Area Suffix B E EN U.K Continental Europe Northern Europe CD-ROM No.SML200103 These models not have adjustment. R

5、adioFans.CN 收音机爱 好者资料库 FS-SD550R/FS-SD770R/FS-SD990R 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 manufacture

6、r. 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 ad

7、ditions 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

8、 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 com

9、ponents 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 crea

10、te 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 requi

11、red, 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 part

12、s 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. Us

13、ing 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 lin

14、e 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 resist

15、or 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

16、 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 accordan

17、ce 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 ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or

18、 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. RadioFans.CN 收音机爱 好者资料库 FS-SD550R/FS-SD770R/FS-SD990R 1-3 Important for laser products 1.CLA

19、SS 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

20、 compact disc player uses invisible laser radiation and is equipped with safety switches which prevent 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 l

21、aser 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 laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. VARO : Avattaessa ja suojaluki

22、tus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. ADVARSEL : Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling. REPRO

23、DUCTION AND POSITION OF LABELS WARNING LABEL DANGER : Invisible laser radiation when open and interlock or defeated. AVOID DIRECT EXPOSURE TO BEAM (e) VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettaessa ol

24、et alttiina nkymttmlle lasersteilylle.l katso steeseen. (d) ADVARSEL :Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. (f) CLASS 1 LASER PRODUCT !CAUTION Please use enough caution not to see the beam directly or touch it in case of an adjustment

25、 or operation check. FS-SD550R/FS-SD770R/FS-SD990R 1-4 Preventing static electricity Electrostatic 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 p

26、erforming repairs. 1.1. Grounding to prevent damage by static electricity Static 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 workbench 1.

27、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 yourself 1. Use an anti-static wrist strap to release any static electricity built up in your body. 1.1.3. Handling the opti

28、cal pickup 1. 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 conditio

29、n of the laser diode in the optical pickup. The testers 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

30、 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 flex

31、ible 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 it Conductive material (conductive sheet) or iron plate (caption) Anti-static wrist strap FS-SD550R/FS-SD770R/FS-SD990R 1-5 Dismantli

32、ng and assembling the traverse unit Notice regarding replacement of optical pickup Electrostatic 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 per

33、forming repairs to the optical pickup or connected devices. 1. Do not touch the area around the laser diode and actuator. 2. Do not check the laser diode using a tester, as the diode may easily be destroyed. 3. It is recommended that you use a grounded soldering iron when shorting or removing the la

34、ser diode. Recommended soldering iron: HAKKO ESD-compatible product 4. Solder the land on the optical pickups flexible cable. Note : Short the land after shorting the terminal on the flexible cable using a clip, etc., when using an ungrounded soldering iron. Note : After shorting the laser diode acc

35、ording to the procedure above, remove the solder according to the text explanation. Shorting Flexible cable KSM-900AAH Sub board (Reverse side) FS-SD550R/FS-SD770R/FS-SD990R 1-6 Piro to performing the following procedure, remove the CD door. Remove the ten screws B and the five screws C attaching th

36、e rear cover on the back of the body. 1. Removing the rear cover (See Fig.2) Remove the four screws A attaching the CD door on the upper side of the body. 1. Removing the CD door (See Fig.1) Prior to performing the following procedure, remove the CD door, the rear cover. Remove the four screws D att

37、aching the side covers on the bottom of the body. Move the left cover backward and remove outward. Also remove the right cover in the same way. 1. 2. Removing the right and left covers (See Fig.3) Disassembly method Fig.1 Fig.2 Fig.3 B BB B B B C C C Rear cover D D Right cover Left cover Bottom CD d

38、oor AA FS-SD550R/FS-SD770R/FS-SD990R 1-7 Prior to performing the following procedure, remove the CD door, the rear cover and the side covers. Remove the three screws E on the bottom of the body. Release two joints a and two joints b on both sides of the body using a screwdriver and remove the front

39、panel assembly toward the front. 1. 2. Removing the front panel assembly (See Fig.4 to 6) Prior to performing the following procedure, remove the CD door, the rear cover, the side covers and the front panel assembly. Disconnect the card wire from connector CN104 and CN105 of the main board in the fr

40、ont part of the body. Disconnect the card wire from CN101 of the main board on the right side, and the wire from CN705 and CN of the CD mechanism base assembly respectively. Remove the four screws F attaching the CD mechanism base assembly on the upper side of the body. Remove the screw I attaching

41、the earth terminal on the right side. 1. 2. Removing the CD mechanism base assembly (See Fig.7 to 14) Fig.4 Fig.6Fig.5 E Front panel assembly (Left side)(Right side)Front panel assembly Joints a Joints b Bottom Fig.7 Fig.8 FF CD mechanism base assembly CD mechanism base assembly Main bard CN105CN104

42、 Front panel assembly F FS-SD550R/FS-SD770R/FS-SD990R 1-8 Remove the screw G attaching the power amplifier board on the back of the body. Disconnect the wire from connector CN301 and pull the power amplifier board fully outward. Raise the right and left door arms by turning the gear a in the rear of

43、 the power amplifier board. After the CD mechanism base assembly is detached from the door arms, pull the CD mechanism base assembly toward the front and disconnect the wire from connector CN804 on the left side of the door arm board. Pull out the CD mechanism base assembly toward the front. 3. 4. 5

44、. 6. Fig.9 Fig.10 Fig.11 F I CD mechanism base assembly Main board CN101 CN708 F CD mechanism base assembly CN804 CD mechanism base assembly CN301 G Power amplifier board Fig.13 Gear a Fig.12 Fig.14 CD mechanism base assembly Power amplifier board Door arm Door arm IGear a CD mechanism base assembly

45、 Door arm board (L) CN804 CN705 FS-SD550R/FS-SD770R/FS-SD990R 1-9 Prior to performing the following procedure, remove the rear cover, the side covers, the front panel assembly and the CD mechanism base assembly. In case that the upper parts of the door arms attached to the CD door are not level, let

46、 down them to the level position by turning the gear a in the direction of the arrow. 1. Removing the door arm assembly / the door arm board (R) and (L) (See Fig.15 to 20) When the door arms incline, the door arm assembly and the door arm board (R) and (L) may not be removed. ATTENTION: Remove the f

47、our screws H on the upper side and the one screw I on the left side of the body. Remove the four screws J attaching the door arm board (L) and (R) on both sides of the door arm assembly. 2. 3. Fig.15 Fig.16 Fig.18 Fig.20 Fig.17 Fig.19 Door arm Door arm board (L) Door arm Door arm board (R) Door arms

48、 (Attached to the CD door) H H Door arm assembly Door arm assembly J J I Door arm board (L) Door arm assembly J J Door arm board (R) Fan motor FS-SD550R/FS-SD770R/FS-SD990R 1-10 Prior to performing the following procedure, remove the CD mechanism base assembly. Disconnect the wires from connector CN

49、102 and CN193 on the main board and release them from the cord stopper respectively. Remove the two screws K and the two screws L attaching the heat sink and the power amplifier board. 1. 2. Removing the power amplifier board (See Fig.21 and 22) Prior to performing the following procedure, remove the CD mechanism base assembly. Disconnect the wires from connector CN191 and CN192 on the main