JVC-HXZ9V-cs-sm维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED No.22041 2003/5 COMPACT COMPONENT SYSTEM 2204120036 HX-Z9V TABLE OF CONTENTS 1Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34 4Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40 V C D N U M B E R V O L U M E P R E S E T S O U N D M O D E COMPACT DIGITAL VIDEO SELECT CA-HXZ9V COMPACT DIGITAL VIDEO US - Singapore Area Suffix RadioFans.CN 收音机爱 好者资料库 1-2 (No.22041) SPECIFICATION Design and specifications are subject to change without notice. Amplifier sectionOutput Power (IEC 268-3)SUBWOOFERS75 W per channel, min. RMS, both channels driven into 6 at 63 Hz with no more than 0.9% total harmonic distortion. MAIN SPEAKERS30 W per channel, min. RMS, both channels driven into 6 at 1 kHz with no more than 0.9% total harmonic distortion. Audio input sensitivity/Impedance(Measured at 1 kHz, with tape recording signal 300 mV) AUX390 mV/50 k MIX 1/21.5 mV/5 k Speakers/ImpedanceSUBWOOFERS6 - 16 MAIN SPEAKERS6 - 16 SURROUND SPEAKERS16 - 32 TunerFM tuning range87.50 MHz - 108.00 MHz AM tuning rangeAt 9 kHz intervals 531 kHz - 1 710 kHz At 10 kHz intervals 530 kHz - 1 710 kHz CD playerCD capacity3 CDs Dynamic range85 dB Signal-to-noise ratio90 dB Wow and flutterImmeasurable MP3 recording formatMPEG 1/2 Audio Layer 3 Max. Bit rate320 kbps Cassette deckFrequency responseNormal (type I)50 Hz - 14 000 Hz Wow and flutter0.15% (WRMS) GeneralPower requirementAC 110 V / AC 127 V / AC 220 V /AC 230 V - AC 240 V (adjustable with the voltage selector), 50 Hz / 60 Hz Power consumption205 W (in operation) 23 W (on standby with Ecology Mode off) Less than 3.5 W (on standby with Ecology Mode on) Dimensions (approx.)205 mm 370 mm 370 mm (W/H/D) Mass (approx.)10.0 kg RadioFans.CN 收音机爱 好者资料库 (No.22041)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, 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.22041) 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 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 (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 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 without 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 Soldering Fig.1 Fig.2 CD traverse mechanism unit Flexible cable (No.22041)1-5 SECTION 2 Disassembly method 2.1Main body 2.1.1Removing the metal cover (See Fig.13) (1) Remove the six screws A on the back of the body. (2) Remove the screw B on each side of the body. (3) Remove the metal cover from the body by lifting the rear part of the cover. CAUTION: Do not break the front panel tab fitted to the metal cover. Fig.1 Fig.2 Fig.3 A B Metal cover Metal cover B 1-6 (No.22041) 2.1.2Removing the CD changer mechanism assembly (See Fig.4, 5) Prior to performing the following procedure, remove the metal cover. (1) Disconnect the card wires from connector CN151 and CN651 on the CD servo control board on the right bottom of the CD changer mechanism assembly. (2) Remove the four screws C attaching the CD changer mechanism assembly on top of the body. (3) Remove the CD changer mechanism assembly while lifting the rear part. CAUTION: Do not damage the CD fitting when removing the CD changer mechanism assembly. Fig.4 Fig.5 CD changer mechanism assembly Front panel assembly CD servo control board CN651 CN151 CC CD changer mechanism assembly (No.22041)1-7 2.1.3Removing the front panel assembly (See Fig.69) Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly. (1) Disconnect the card wires from connector CN44 and CN870, disconnect the flat wire from connector CN922 on the main board on the right side of the body. Remove the screw D attaching the wire from extending from the under- side of the front panel assembly. (2) Disconnect the wire from connector CN701 on the bridge board. (3) Cut the band. (4) Disconnect the wires from connector CN231 and CN232 on the primary board on the left side of the body. (5) Remove the plastic rivet attaching the inner bar in the cen- ter of the front panel assembly. REFERENCE: Keep the plastic rivet for reuse. (6) Remove the three screws E attaching the front panel as- sembly at the bottom of the body. (7) Disconnect the ground wire extending from the phone board from bottom chassis. (8) Release the two joints a on the lower left and right sides of the front panel assembly using a screwdriver, and remove the front panel assembly toward the front. REFERENCE: Front panel need to be tilt little bit as release from bottom chassis. Fig.6 Fig.7 Fig.8 Fig.9 Main board CN870 CN922CN44 Front panel assembly D Joint a Bridge board CN701 Joint a Bottom chassis Ground wire Primary board CN231,CN232 Band Bridge board CN701 Inner bar Plastic rivetFront panel assembly E 1-8 (No.22041) 2.1.4Removing the antenna board (See Fig.10, 11) Prior to performing the following procedure, remove the metal cover. (1) Disconnect the card wire from connector CN1 on the an- tenna board on the right side of the body. (2) Remove the band attaching the antenna board. (3) Remove the two screws F on the rear panel on the back of the body. Fig.10 Fig.11 Antenna board CN1 Band Rear panel F Rear panel (No.22041)1-9 2.1.5Removing the rear panel (See Fig.1216) Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly. (1) Remove holding board by remove two plastic rivets and then slide out the holding board as shown in fig.12. (2) Disconnect fan wire from connector CN206 on the bridge board. (3) Disconnect the flat wire from connector CN91 on the sur- round speakers jack board. (4) Cut off the band that fixing fan wire on inner bar. (5) Remove ten screws G from rear panel. (6) Detach joint b to release rear panel from inner bar. (7) Release joints c which on right bottom and left bottom of rear panel. The joint can be release by pull outward the side of rear panel. REFERENCE: Fan assembly and surround speaker jack board will come off with rear panel. Fig.12 Fig.13 Fig.14 Fig.15 Fig.16 Holding board Plastic rivets Inner bar Rear panel Inner barBand Bridge board CN206 Joint b Surround speakers jack board CN91 G G G G Rear panel Joint c Rear panel Joint c Rear panel 1-10 (No.22041) 2.1.6Removing the T.flux board (See Fig.17, 18) Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly . (1) Disconnect the card wire from connector CN102 on the T.flux board. (2) Remove the two plastic rivets attaching the T.flux board. (3) Remove the T.flux board from the bracket which is located on the inner bar. (two joints d) Fig.17 Fig.18 T.flux board Front panel assembly Inner bar Plastic rivet Plastic rivet d T.flux board CN102 (No.22041)1-11 2.1.7Removing the fan assembly (See Fig.19, 20) Prior to performing the following procedure, remove the metal cover, the CD changer mechanism assembly and the rear pan- el. (1) Remove two screws H on the rear panel. (2) Rotate fan assembly in clockwise direction to release fan assembly from rear panel (joints e). Fig.19 Fig.20 2.1.8Removing the main board (See Fig.21) Prior to performing the following procedure, remove the metal cover, the CD changer mechanism assembly, the antenna board and the rear panel. (1) Disconnect the card wires from connector CN44, CN504 and CN870 on the main board. (2) Disconnect the flat wire from connector CN922 on the main board. (3) Remove the screw D attaching the main board. (4) Disconnect connector CN217 and CN311 on the main board outward and release from the base chassis (joint f) upward. Fig.21 H Rear panel e eFan assembly Main board CN870 CN922 CN44 CN311 CN504 CN217 f D 1-12 (No.22041) 2.1.9Removing the bridge board / regulator board / heat sink (See Fig.2227) Prior to performing the following procedure, remove