JVC-FSS57-cs-sm维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LIMITED No.MB205 2004/4 COMPACT COMPONENT SYSTEM MB20520044 FS-S57 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 Area suffix J - U.S.A. C - Canada RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB205) SPECIFICATION Design and specifications are subject to change without notice. Amplifier Section CA-FSS57 Output Power74 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. Analog input sensitivity/Impedance (at 1 kHz) AUX/DVD:400 mV/48 k Speakers/Impedance6 - 16 TunerFM tuning range87.5 MHz-108.0 MHz AM tuning range530 kHz-1 710 kHz CD playerCD Capacity5 CDs Dynamic range87 dB Signal-to-noise ratio90 dB Wow and flutterImmeasurable GeneralPower requirementAC 120 V , 60 Hz Power consumption110 W (at operation) 17 W (on standby) 1.4 W (in power save mode) Dimensions (W/H/D) (approx.)175 mm 239.5 mm 378 mm (6 15/16 in. 9 1/2 in. 14 15/16 in.) Mass (approx.)7.4 kg (16.3 lbs) Speaker Section SP-UXS57 Type2-way bass-reflex type SpeakersWoofer 12 cm cone 1 Tweeter 4 cm cone 1 Power handling capacity60 W Impedance6 Frequency range53 Hz to 30 kHz Sound pressure level84 dB/Wm Dimensions (W/H/D) (approx.)145 mm 239.5 mm 202 mm (5 3/4 in. 9 1/2 in. 8 in.) Mass (approx.)2.2 kg (4.9 lbs) each RadioFans.CN 收音机爱 好者资料库 (No.MB205)1-3 SECTION 1 PRECAUTION 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, 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 per- formed 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 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 have 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 safety 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 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 reassem- bling. (5) Leakage shock hazard testing After reassembling 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 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, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any 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- posed 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, 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.). 1.2Warning (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. 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 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. (This regulation dose not Except 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.MB205) 1.5Preventing 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 performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. 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 (optical 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 shorted. 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. 1.6Handling 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) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1.7Attention when traverse unit is decomposed *Please refer to Disassembly method in the text for the pickup unit. Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible wire is disconnected without applying solder, the 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 Caution: For continued protection against risk of fire, replace only with same type 2.5 A/125 V for F1000, 1.5 A/125 V for F1001. This symbol specifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F1000 comme le meme type que 2,5 A/125 V, et 1,5 A/125 V pour F1001. Ce sont des fusibles suretes qui functionnes rapide. (No.MB205)1-5 1.8Importance administering point on the safety Caution: For continued protection against risk of fire, replace only with same type 2.5 A/125 V for F1000, 1.5 A/125 V for F1001. This symbol specifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F1000 comme le meme type que 2,5 A/125 V, et 1,5 A/125 V pour F1001. Ce sont des fusibles suretes qui functionnes rapide. Primary board 2.5A-125V F1000 1.5A-125V F1001 1-6 (No.MB205) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB205)1-7 SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Removing the metal cover (See Figs.1 to 3) (1) From the back side of the main body, remove the six screws A attaching the metal cover. (See Fig.1.) (2) From the both sides of the main body, remove the two screws B attaching the metal cover. (See Figs.2 and 3.) (3) Remove the metal cover in the direction of the arrow while extending the lower sections of the metal cover. (See Figs.2 and 3.) Fig.1 Fig.2 Fig.3 A AA Metal cover B Metal cover B Metal cover 1-8 (No.MB205) 3.1.2Removing the front panel assembly (See Figs.4 to 6) Remove the metal cover. (1) From the left side of the main body, disconnect the wire from the connector CN104 on the power supply board. (See Fig.4.) Reference: After connecting the wire to the connector CN104, fix the wire with the spacer as before. (See Fig.4.) (2) Disconnect the card wire from the connector CN700 on the micon board. (See Figs.4 and 5.) Reference: After connecting the card wire to the connector CN700, fix the card wire with the spacer as before. (See Fig.4.) (3) From the top side of the main body, remove the screws C attaching the front panel assembly. (See Fig.5.) (4) From the bottom side of the main body, remove the two screws D attaching the front panel assembly. (See Fig.6.) (5) Release the two hooks a and hook b from the both and bot- tom sides of the front panel assembly, and remove the front panel assembly in the direction of the arrow. (See Fig.6.) Reference: When attaching the front panel assembly, fit the micon board to the notch c on the back side of the front panel assembly. (See Fig.5.) Fig.4 Fig.5 Fig.6 Front panel assembly Spacer Power supply board CN104 Micon board CN700 Card wire C Micon board c Micon board Front panel assembly CN700 Card wire D Front panel assembly a b a (No.MB205)1-9 3.1.3Removing the rear panel (See Fig.7) Remove the metal cover. (1) From the back side of the main body, remove the five screws E attaching the rear panel. (2) Remove the screw F attaching the rear cover. (3) Remove the rear panel from the chassis while extending the sections d of the rear panel in the direction of the arrow. Reference: When removing the rear cover, remove the screw F and two screws F. Fig.7 3.1.4Removing the power supply board (See Fig.8) Remove the metal cover. (1) From the left side of the main body, remove the screw G and screw H attaching the power supply board. (2) Disconnect the connectors CN103 on the power supply board toward this side. (3) From the forward side of the power supply board, discon- nect the wires from the connectors (CN100 to CN102, CN104). Reference: When attaching the screw G, attach the primary protector with it. 3.1.5Removing the tuner (See Fig.8) Remove the metal cover. (1) From the left side of the main body, disconnect the card wire from the connector CN1 on the tuner. (2) From the back side of the main body, remove the two screws J attaching the tuner. Reference: After attaching the tuner, put the card wire on the section e of the primary protector. When connecting the card wire to the connector CN1, fix the card wire with the spacer as before. Fig.8 E Rear panel Rear cover dd F E F F G Card wire CN102 H CN1 Power supply board e CN103 CN100 CN101 J Tuner Primary protector CN104 Wire CN1 Spacer 1-10 (No.MB205) 3.1.6Removing the micon board (See Figs.9 and 10) Remove the metal cover, front panel assembly and rear panel. (1) From the top side of the main body, disconnect the card wire from the connector CN766 on the micon board. (See Fig.9.) Reference: When connecting the card wire to the connector CN766, fix the card wire with the spacer as before. (2) From the forward side of the micon board, disconnect the wire from the connectors (CN750, CN760) on the micon board. (See Fig.9.) Reference: When reassembling, fix the wire with the wire holder af- ter connecting the wire to the connector CN760 on the micon board as before. (See Fig.9.) (3) From the right side of the main body, remove the three screws K attaching the micon board. (See Fig.10.) (4) Disconnect the connectors (CN761,CN762) on the micon board toward this side. (See Fig.10.) (5) From the forward side of the micon board, disconnect the card wire from the connectors CN765. (See Fig.10.) Fig.9 Fig.10 Micon board Wire holder CN766 CN760 CN766 Spacer CN750 Card wire Wires K Micon board CN765 CN762CN761 K (No.MB205)1-11 3.1.7Removing the power amplifier board (See Fig.11) Remove the metal cover, front panel assembly, rear panel, power supply board and micon board. (1) From the top side of the main body, remove the wire holder and tie band fixing the wire 1. (2) Remove the four screws L attaching the power amplifier board. Reference: When attaching the power amplifier board, align the sections f of the main chassis in th