JVC-FSH35-cs-sm维修电路原理图.pdf

《JVC-FSH35-cs-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《JVC-FSH35-cs-sm维修电路原理图.pdf（69页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED No.22063 2003/5 COMPACT COMPONENT SYSTEM 2206320035 FS-H35 TABLE OF CONTENTS 1Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2、 1-3 2Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 3Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . . . . . . . . 1-19 4Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25 COMPACT COMPONENT SYSTEM Area Suffix J - U.S.A. C - Canada RadioFans.CN 收音机爱 好者资料库 1-2 (No.22063) SPECIFICATION Design

4、and specifications are subject to change without notice. AmplifierOutput Power20 W (10 W + 10 W) at 4 (10% THD) 12 W per channel, min. RMS, driven into 4 at from 80 Hz to 15 kHz with no more than 10% total harmonic distortion. Audio input sensitivity/Impedance (at 1 kHz)AUX500 mV/48.75 k Speakers/Im

5、pedance4 TunerFM tuning range87.5 MHz - 108.0 MHz AM tuning range530 kHz - 1 710 kHz CD playerDynamic range85 dB Signal-to-noise ratio90 dB Wow and flutterImmeasurable Cassette deckFrequency responseNormal (type I)50 Hz - 15 000 Hz Wow and flutter0.15% (WRMS) SpeakerSpeaker unitsFull range8.0 cm (3

6、3/16 in.) cone 1 Impedance4 Dimensions (approx.)135 mm 203 mm 190 mm (W/H/D) (5 3/8 in. 8 in. 7 1/2 in.) Mass (approx.)1.7 kg (3.8 lbs) each GeneralPower requirementAC IN120, 60 Hz DC IN12 V, 4 A Power consumption35 W (at operation) 3.0 W (on standby) Dimensions (approx.)412 mm 208 mm 275 mm (W/H/D)

7、 (16 1/4 in. 8 1/4 in. 10 7/8 in.) Mass (approx.)6.5 kg (14.4 lbs) RadioFans.CN 收音机爱 好者资料库 (No.22063)1-3 SECTION 1 Precautions 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, n

8、o 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 per- formed by qualified personnel only. (2) Alterations of the design or circuitry of the product should n

9、ot 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 par

10、ts in the products have special safety-related characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which hav

11、e these special safety characteristics are identified in the Parts List of Ser- vice 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 saf

12、ety charac- teristics 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 part

13、s, 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 reassem- bling. (5) Leakage shock hazard testing After r

14、eassembling the product, always perform an isola- tion check on the exposed metal parts of the product (an- tenna 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 isolati

15、on 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, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any

16、leakage cur- rent 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 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- p

17、osed 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 measure the AC voltage across the resistor. Now, reve

18、rse 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.). 1.2Warning (1) This equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of t

19、he 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.

20、 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with component parts appearing on the silk-screen printed side (parts side) of the P

21、WB 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. (This regulation dose not Exce

22、pt the J and C version) Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE 1-4 (No.22063) 1.5Importance administering point on the safety Caution: For continued protection against risk of fire, replace onl

23、y with same type 1A/125V for F901, 6.3A/125V for F902 and F903. This symbol specifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F901 comme le meme type que 1A/125V, et 6.3A/125V pour F902 et F903. Ce sont des fusibles suretes qui function

24、nes rapide. C902 C901 C903 C904 CN901 D901 D902 D904 D903 D905 Z901 Z913 Z902 T901 J902 L901 R901 S901 Z912 B908 Z903 Z911 PP901 B910 B911 B914 B913 B916 B902 B901 B903 B904 B909 B907 B912 J901 B915 (No.22063)1-5 1.6Preventing static electricity Electrostatic discharge (ESD), which occurs when stati

25、c 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. 1.6.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pick

26、up (laser diode) in devices such as CD players. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optica

27、l pickup) on it. (2) Ground yourself Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shor

28、ted. After replacement, return the shorted parts to their original condition. (Refer to the text.) Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 1.7Handling the traverse unit (optical pickup)

29、 (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 ant

30、i-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) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do

31、 not turn it. 1.8Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the CD pickup unit. Apply solder to the short land sections before the flexible wire is disconnected from the connector CN101 on the CD servo board. (If the flexible wire is disconnected w

32、ithout applying solder, the CD pickup may be destroyed by static electricity.) In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire. 1M Conductive material (conductive sheet) or iron palate (caption) Anti-static wrist strap CN601 on mechanism boar

33、d Shorting round Shorting round Flexible wire 1-6 (No.22063) 1.9Important 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 n

34、ot disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The 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 de feate

35、d. 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 O

36、F LABEL and PRINT WARNING LABEL and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. Caution label (No.22063)1-7 SECTION 2 Disassembly method 2.1Main body 2.1.1Removing the rear panel (See Fig.1,2) (1) From behind the body, remov

37、e the eight screws A attach- ing the rear panel. (2) Turing the body upside down, remove the two screws B at- taching the rear panel, and remove. Fig.1 Fig.2 A A A A BB CC Front panel assembly Rear panel 1-8 (No.22063) 2.1.2Removning the side panel (L) and (R) (See Fig.25) Prior to performing the fo

38、llowing procedure, remove the rear panel. (1) Turning the body upside down, remove the two screws C attaching the front panel assembly. (2) Turning the body initial position, open the CD door while pressing the upper OPEN button. (3) Moving the side panel (L) in the arrow direction, remove the panel

39、 from the left side of the body. (4) Moving the side panel (R) in the arrow direction, remove the panel from the right side of the body. Fig.3 Fig.4 Fig.5 Side panel (L) Side panel (R) (No.22063)1-9 2.1.3Removing the CD player assembly (See Fig.6,7) Prior to performing the following procedure, remov

40、e the rear panel and the left and right side panels. (1) Disconnect the card wires from the two connectors CN603 and CN604 on the CD servo control board. (2) Remove the two screws D attaching the front panel assem- bly on the both sides. (3) Release the two joints a on the both sides of the front pa

41、nel assembly. (4) Move the CD player assembly in the direction of the arrow. Fig.6 Fig.7 CD player assemblyCD servo control board CN604 D a CN603 D CD player assembly a 1-10 (No.22063) 2.1.4Removing the power amplifier board and heat sink (See Fig.810) Prior to performing the following procedure, re

42、move the rear panel, the left and right side panels, and the CD player assem- bly. (1) Remove the five screws E and F attaching the heat sink. (2) Disconnect the wire from connector CN901 on the power supply board. (3) Disconnect the card wire from connector CN305 on the power amplifier board. (4) R

43、emove the screw G attaching the power amplifier board. (5) Disconnect the connector CN301 on the power amplifier board, and release the two joints b. REFERENCE: Remove the screw F, then power amplifier board can be re- moved without removing heat sink. Fig.8 Fig.9 Fig.10 E E F Heat sink Power amplif

44、ier board CN301 Power supply board CN901 CN305 Power amplifier board G bb (No.22063)1-11 2.1.5Removing the tuner board (See Fig.11) Prior to performing the following procedure, remove the rear panel, the left and right side panels, and the CD player assem- bly. (1) Remove the screw H attaching the t

45、uner board from the right side of the body. (2) Disconnect the card wire from the connector CN1 on the tuner board. (3) Release the joint c, and remove the tuner board backward. Fig.11 2.1.6Removing the front panel assembly (See Fig.12,13) Prior to performing the following procedure, remove the rear

46、 panel the left and right side panels, the CD player assembly, the power amplifier board. (1) Disconnect the card wire from the connector CN714 on the LCD system CPU board. (2) Release the joint d on the bottom of the front panel assem- bly using a screwdriver, and remove the front panel assem- bly

47、toward the front. Fig.12 Fig.13 H Tuner board CN1 c LCD system CPU board CN714 d Front panel assembly 1-12 (No.22063) 2.1.7Remove the power transformer and power supply board (See Fig.14,15) Prior to performing the following procedure, remove the rear panel, the left and right side panels, the CD pl

48、ayer assembly, the power amplifier board and the tuner board. (1) Remove the screw I attaching the jack holder and release joint e, and then remove jack holder. (2) Remove the four screws J attaching the power transformer and power supply board. Fig.14 Fig.15 I Jack holder e J J Power transformer Po

49、wer supply board (No.22063)1-13 2.1.8Remove the cassette mechanism assembly (See Fig.16,17) Prior to performing the following procedure, remove the front panel assembly. (1) Disconnect the card wire from the connector CN713 on the LCD system CPU board. (2) Remove the four screws K and L attaching the cassette mechanism assembly, and remove. Fig.16 Fig.17 Front panel assembly LCD system CPU board CN713 K L Cassette mechanism assembly 1-14 (No.22063) 2.1.9Remove