JVC-HXD7-cs-sm维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.MB455 2005/8 COMPACT COMPONENT SYSTEM MB45520058 HX-D7 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 CA-HXD7SP-HXD7SP-HXD7 Area suffix UJ - U.S.Military RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB455) SPECIFICATION CA-HXD7 Speaker section-SP-HXD7 Design and specifications are subject to change without notice. Amplifier sectionOutput PowerSUBWOOFER135 W per channel, min. RMS, driven into 6 at 63 Hz with no more than 10% total harmonic distortion. (IEC268-3) MAIN SPEAKER60 W per channel, min. RMS, driven into 4 at 1 kHz with no more than 10% total harmonic distortion. (IEC268-3) Audio input sensitivity/impedanceAUX:400 mV/47 k USB:USB Version 1.1 Digital outputDIGITAL OUTPUT (OPTICAL):-21 dBm to -15 dBm (660 nm 30 nm) VIDEO OUTColor system:NTSC VIDEO (composite)1 V(p-p)/75 S-VIDEOY (luminance):1 V(p-p)/75 C (chrominance, burst):0.286 V(p-p)/75 COMPONENT(interlace/ progressive) (Y):1 V(p-p)/75 (PB/PR):0.7 V(p-p)/75 Speaker Terminals4 - 8 (main speakers) 6 - 16 (subwoofers) Tuner sectionFM tuning range87.50 MHz - 108.00 MHz AM tuning range531 kHz - 1 710 kHz (at 9 kHz interval) 530 kHz - 1 710 kHz (at 10 kHz interval) Disc player section Playable discDVD Video/DVD Audio CD/VCD/SVCD CD-R/CD-RW (recorded in Audio CD/Video CD/Super Video CD/MP3/ JPEG format) DVD-R/DVD-RW (recorded in video format) Dynamic range90 dB Horizontal resolution500 lines Wow and flutterImmeasurable GeneralPower requirementAC 110 V - AC 127 V/ AC 220 V - AC 240 V (adjustable with the voltage selector), 50/60 Hz Power consumption160 W (at operation) 30 W (on standby) Dimensions (approx.)175 mm 373 mm 389 mm (W/H/D) Mass (approx.)10.1 kg Type4-Way Front Twin Woofer (Magnetically Shielded Type) SpeakersSubwoofer16 cm cone 1 Woofer16 cm cone 1 Mid range7 cm cone 1 Tweeter2 cm piezo 1 Power handling capacitySubwoofer360 (180 + 180) W Main speaker160 (80 + 80) W ImpedanceSubwoofer6 Main speaker4 Frequency rangeSubwoofer30 Hz - 1 000 Hz Main speaker50 Hz - 20 000 Hz Sound pressure levelSubwoofer74 dB/Wm Main speaker84 dB/Wm Dimensions (approx.)295 mm 452 mm 390 mm (W/H/D) Mass (approx.)8.9 kg each RadioFans.CN 收音机爱 好者资料库 (No.MB455)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.MB455) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB455)1-5 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 five screws A attaching the metal cover. (See Fig.1.) (2) From the both sides of the main body, remove the four screws A attaching the metal cover. (See Figs.2 and 3.) (3) Remove the metal cover from the main body while lifting the rear section of the metal cover in the direction of the ar- row. (See Figs.2 and 3.) Fig.1 Fig.2 Fig.3 Metal cover A A A AA Metal cover A A Metal cover A A 1-6 (No.MB455) 3.1.2Removing the tuner (See Figs.4 and 5) Remove the metal cover. (1) From the left side of the main body, disconnect the card wire from the connector on the tuner. (See Fig.4.) (2) From the back side of the main body, remove the two screws B attaching the tuner to the rear panel. (See Fig.5.) Fig.4 Fig.5 Tuner Connector Rear panel B Tuner (No.MB455)1-7 3.1.3Removing the fan motor (See Figs.6 and 7) Remove the metal cover. (1) From the top side of the main body, disconnect the wire from the connector FAN101 on the amplifier board. (See Fig.6.) (2) From the back side of the main body, remove the two screws C attaching the fan motor to the rear panel. (See Fig.7.) (3) Take out the fan motor from the main body. Fig.6 Fig.7 Amplifier board FAN101 Fan motor Fan motor C Rear panel 1-8 (No.MB455) 3.1.4Removing the rear panel (See Fig.8) Remove the metal cover. (1) From the back side of the main body, remove the fifteen screws D and screw E attaching the rear panel. (2) Remove the sections a toward this side and remove the rear panel from the sections b. Fig.8 3.1.5Removing the video board (See Fig.9) Remove the metal cover and rear panel. From the back side of the main body, disconnect the card wire from the connector CN101 on the video board. Fig.9 Rear panel DD D aa bb D E CN101 Video board (No.MB455)1-9 3.1.6Removing the fuse board and voltage selector board (See Fig.10) Remove the metal cover and rear panel. From the back side of the main body, disconnect the wires from the connectors (DCW06, DCW07) on the fuse board and remove the fuse board with the voltage selector board. Fig.10 3.1.7Removing the amplifier board (See Fig.11) Remove the metal cover and rear panel. (1) From the top side of the main body, disconnect the wire of the fan motor from the connector FAN101 on the amplifier board. (2) Disconnect the wire from the connector FAN102 on the amplifier board and remove the wire from the slot c. (3) Disconnect the wires from the connectors (AW102, AW105, CW108) on the amplifier board. (4) Disconnect the card wire from the connector AW104 on the amplifier board. (5) Disconnect the card wire from the connector AW101 on the amplifier board and remove the card wire from the slot c. (6) Remove the card wire of the tuner from the slot c. Reference: Remove the tuner as required. When connecting the each wire, pass them through the slot c as before. (7) Remove the screw F and take out the amplifier board from the main body. Fig.11 Fuse board Voltage selector board DCW06 DCW07 Amplifier board FAN101 Card wire (for the tuner) AW101 CW108 AW102 F c FAN102 AW104 AW105 1-10 (No.MB455) 3.1.8Removing the power amplifier ICs (See Figs.12 to 14) Remove the metal cover, rear panel and amplifier board. (1) From the forward side of the amplifier board, remove the four screws G and screw H attaching the power amplifier ICs to the heat sink. (See Figs.12 and 13.) (2) From the reverse side of the amplifier board, remove the three screws J attaching the heat sink. (See Fig.14.) (3) Remove the soldered sections (d, e, f) and remove the power amplifier ICs from the forward side of the amplifier board. (See Fig.14.) Fig.12 Fig.13 Fig.14 Amplifier board G Heat sink Power amplifier IC (AIC01) Amplifier board GH Heat sink Power amplifier IC (PIC02) Power amplifier IC (AIC02) Amplifier board J d f e (No.MB455)1-11 3.1.9Removing the 5DVD changer mechanism assembly (See Figs.15 to 19) Remove the metal cover, rear panel, video board and amplifier board. (1) From the right side of the main body, remove the card wire from the sections g of the shield. (See Fig.15.) (2) From the left side of the main body, remove the wire from the sections h of the shield. (See Fig.16.) (3) From the both sides of the main body, remove the four screws K and remove the shield from the main body. (See Figs.15 and 16.) (4) Disconnect the wires from the connectors (DCW02, DCW04, DCW05) on the DVD power board. (See Fig.17.) (5) From the both sides of the main body, remove the four screws M and remove the 5DVD changer mechanism as- sembly from the main body in the direction of the arrow. (See Figs.17 and 18.) (6) Disconnect the card wire from the connector CW104 on the forward side of the main board. (See Fig.18.) (7) From the top side of the 5DVD changer mechanism as- sembly, remove the four screws N and remove the base 1 and base 2. (See Fig.19.) (8) From the bottom side of the 5DVD changer mechanism as- sembly, disconnect the card wire from the connector CN701 on the DVD servo control board. (See Fig.19.) Reference: When removing the tray panels, release the claws j of the tray panel and remove the five tray panels from the 5DVD changer mechanism assembly. (See Fig.19.) Note: When releasing the claws j, take care not to break them. (See Fig.19.) Fig.15 Fig.16 Fig.17 Shield g K Shield K h 5DVD changer mechanism assembly M DCW02 DCW04 DVD power board DCW05 1-12 (No.MB455) Fig.18 Fig.19 5DVD changer mechanism assembly M CW104 Main board Base 2Base 1 NN NN 5DVD changer mechanism assembly Tray panels j CN701 DVD servo control board j (No.MB455)1-13 3.1.10 Removing the DVD power board (See Fig.20) Remove the metal cover, rear panel, video board, amplifier board and 5DVD changer mechanism assembly. (1) From the back side of the base 2, disconnect the card wires from the connectors (AW103, AW106) on the DVD power board. (2) Disconnect the wire from the connector AW104 on the DVD power board. (3) Remove the three screws P attach the DVD power board on the base 2. Fig.20 3.1.11 Removing the power transformer (See Fig.21) Remove the metal cover, rear panel, video board, fuse board, voltage selector board, amplifier board and 5DVD changer mechanism assembly. (1) Remove the four screws Q attaching the power transformer on the bottom chassis. (2) Take out the power transformer. 3.1.12 Removing the main board (See Figs.21 and 22) Remove the metal cover, rear panel, video board, amplifier board and 5DVD changer mechanism assembly. (1) From the top side of the main body, remove the screw R at- taching the earth wires on the bottom chassis. (See Fig.21.) (2) Remove the screw S attaching the main board. (See Fig.22.) (3) Disconnect the connectors (CW101, CW102, CW105) on the main board from the front panel assembly in the direc- tion of the arrow. (See Fig.22.) Fig.21 Fig.22 Base 2 P AW103 AW106 AW104 DVD power board P Earth wiresBottom chassis Main board Power transformer R Q Q Q Main board CW101 CW102 CW105 Front panel assembly S 1-14 (No.MB455) 3.1.13 Removing the front panel assembly (See Figs.21, 23 to 25) Remove the metal cover, rear panel, video board, amplifier board and 5DVD changer mechan