JVC-HXD77UJ-cs-sm维修电路原理图.pdf

SERVICE MANUAL COPYRIGHT 2006 Victor Company of Japan, Limited No.MB556 2006/8 COMPACT COMPONENT SYSTEM MB55620068 HX-D77UJ Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 CA-HXD77SP-HXD77SP-HXD77 RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB556) SPECIFICATION Design and specifications are subject to change without notice. Amplifier section (CA-HXD77) Output PowerSUBWOOFERS125 W per channel, min. RMS, driven into 3 at 100 Hz with no more than 10% total harmonic distortion. (IEC 268-3) (at 230 V , 50 Hz) MAIN SPEAKERS90 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total harmonic distortion. (IEC 268-3) (at 230 V , 50 Hz) Audio input sensitivity/ impedance AUX400 mV/47 k USBUSB Version 1.1 Video input sensitivity/ impedance GAME/AUX (composite video) 1 V(p-p)/75 Digital outputDIGITAL OUTPUT (OPTICAL) -21 dBm to -15 dBm (660 nm 30 nm) VIDEO OUTColor systemNTSC or PAL VIDEO (composite)1 V(p-p)/75 S-VIDEOY (luminance) : 1 V(p-p)/75 C (chrominance, burst) : NTSC : 0.286 V(p-p)/75 C (chrominance, burst) : PAL : 0.3 V(p-p)/75 Speaker Terminals6 - 16 (main speakers) 3 - 6 (subwoofers) Tuner sectionFM tuning range87.5 MHz - 108.0 MHz AM tuning range530 kHz - 1 710 kHz (at 10 kHz intervals) 531 kHz - 1 710 kHz (at 9 kHz intervals) Disc player section Playable discDVD Video CD/VCD/SVCD CD-R/CD-RW (recorded in Audio CD/Video CD/Super Video CD/MP3/ WMA/JPEG format) DVD-R/DVD-RW (recorded in DVD-Video or DVD-VR format) +R/+RW (recorded in DVD-Video or DVD-VR format) Dynamic range90 dB Horizontal resolution500 lines Wow and flutterImmeasurable GeneralPower requirementAC 110 V - AC 240 V , 50/60 Hz Power consumption90 W/ 150 VA (at operation) 8 W (on standby: with power saving off-Normal mode) 1 W (on standby: with power saving on-Eco mode) Dimensions (approx.) (W/H/D)175 mm 373 mm 411 mm (6 15/16 in. 14 11/16 in. 16 3/16 in.) Mass (approx.)5.8 kg (12.8 lbs) Speaker section (SP-HXD77) Type4-Way Front Twin Woofer (Magnetically Shielded Type) SpeakersSubwoofer16 cm (6 5/16 in.) cone 1 Woofer16 cm (6 5/16 in.) cone 1 Mid range7 cm (2 13/16 in.) cone 1 Tweeter2 cm (13/16 in.) piezo 1 Power handling capacity Subwoofer180 W Main speaker90 W ImpedanceSubwoofer3 Main speaker6 Frequency rangeSubwoofer30 Hz - 1 000 Hz Main speaker50 Hz - 20 000 Hz Sound pressure levelSubwoofer73 dB/Wm Main speaker82 dB/Wm Dimensions (approx.) (W/H/D)296 mm 453 mm 343 mm (11 11/16 in. 17 7/8 in. 13 9/16 in.) Mass (approx.)7.5 kg (16.5 lbs) each RadioFans.CN 收音机爱 好者资料库 (No.MB556)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.MB556) 1.5Important for laser products 1.CLASS 1 LASER PRODUCT 2.CAUTION : (For U.S.A.) Visible and/or invisible class II laser radiation when open. Do not stare into beam. (Others) Visible and/or invisible class 1M laser radiation when open. Do not view directly with optical instruments. 3.CAUTION : Visible and/or invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 4.CAUTION : This laser product uses visible and/or 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 laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than those specified here in may result in hazardous radiation exposure. REPRODUCTION AND POSITION OF LABELS and PRINT ! Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. WARNING LABEL and PRINT (No.MB556)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB556) SECTION 3 DISASSEMBLY 3.1Main body 3.1.1Removing the top cabinet (See Fig.1, 2) (1) From the back side of the main body, remove the five screws A attaching the top cabinet. (See Fig.1) (2) From the both side of the main body, remove the four screws B attaching the top cabinet. (See Fig.2.) (3) Remove the top cabinet from the main body while lifting the rear section of the top cabinet in the direction of the arrow. (See Fig.2) 3.1.2Removing the fan (See Fig.1, 3) Remove the top cabinet. (1) From the back side of the main body, remove the two screws C attaching the fan to the rear cabinet. (See Fig.1) (2) Remove the connector wire from the connector CN108 of the AMP board. (See Fig.3) (3) Take out the fan from the main body. Fig.1 Fig.2 Fig.3 Top cabinet AA C A C Top cabinet B SMCN01 SMCN02 AMP board SMPS board CN102 CN101 CN103 CN104 CN108 (No.MB556)1-7 3.1.3Removing the AMP board (See Fig.3 to 5) Remove the top cabinet. (1) Disconnect the connector wire from the connector CN102 of the AMP board. (See Fig.3) (2) Disconnect the card wires from the connectors CN101, CN103, CN104 of the AMP board. (See Fig.3) (3) Disconnect the connector wires from the connectors SMCN01, SMCN02 of the SMPS board. (See Fig.3) (4) From the back side of the main body, remove the five screws D attaching the AMP board to the rear cabinet. (See Fig.4) (5) From the right side of the main body, remove the one screw E attaching the AMP board to the PCB holder. (See Fig.5) (6) Take out the AMP board from the main body. Fig.4 Fig.5 Rear cabinet D F Faa AMP board PCB holder E 1-8 (No.MB556) 3.1.4Removing the SMPS board (See Fig.4, 6, 7) Remove the top cabinet and the AMP board. (1) From the back side of the main body, remove the two screws F attaching the rear cabinet. (See Fig.4) (2) From the top side of the main body, remove the one screw G attaching the earth wire on the bottom cabinet. (See Fig.6) (3) Remove the two hooks a toward this side and remove the rear cabinet. (See Fig.4) (4) From the reverse side of the rear cabinet, remove the four screws H attaching the rear cabinet. (See Fig.7) (5) Release the nine claws b. (See fig.7) (6) Take out the SMPS board from the rear cabinet. Fig.6 Fig.7 SMPS board GBottom cabinet SMPS board HH H H bb b b (No.MB556)1-9 3.1.5Removing the 5DVD mechanism assembly (See Fig.8 to 11) Remove the top cabinet, the rear cabinet and the AMP board. (1) From the top side of the main body, release the two claws c and remove the PCB holder from the 5DVD mechanism assembly. (See Fig.8) (2) From the top side of the main body, remove the two screws J from the main body. (See Fig.9) (3) From the both side of the main body, remove the two screws K and then remove the 5DVD mechanism assem- bly from the main body in the direction of the arrow. (See Fig.10) (4) From the top side of the 5DVD mechanism assembly, re- move the four screws L and remove the 5DVD mechanism assembly and the deck holder. (See Fig.11) Reference: When removing the doors, release the claws d of the doors and then remove the five doors from the 5DVD mechanism as- sembly. (See Fig.11) Note: When releasing the claws d, take care not to break them. (See Fig.11) Fig.8 Fig.9 Fig.10 Fig.11 PCB holder 5DVD mechanism assembly c J J 5DVD mechanism assembly K Front cabinet assembly LL 5DVD mechanism assembly Deck holder d d L 1-10 (No.MB556) 3.1.6Removing the front cabinet assembly (See Figs.12 to 14) Remove the top cabinet, the rear cabinet, the AMP board and 5DVD mechanism assembly. (1) From the top side of the main body, remove the one screw M attaching the earth wires on the bottom cabinet. (See Fig.12) (2) From the both side of the main body, remove the two screws N attaching the front cabinet assembly. (See Fig.13) (3) From the both and bottom side of the main body, disen- gage the two hooks e and one hook f and remove the front cabinet assembly from the main body in the direction of the arrow. (See Fig.13, 14) Fig.12 Fig.13 Fig.14 M Front cabinet assembly Bottom cabinet e N Front cabinet assembly Bottom cabinet (both side) Front cabinet assembly f (No.MB556)1-11 3.1.7Removing the front VFD board (See Fig.15) Remove the top cabinet, the rear cabinet, the AMP board, 5DVD mechanism assembly and the front cabinet assembly. (1) From the inside of the front cabinet assembly, remove the four screws P attaching the front VFD board. (2) Take out the front VFD board from the front cabinet assem- bly and disconnect the card wire from the connector FW102 on the forward side of the front VFD board. Fig.15 P Front cabinet assembly Front VFD board FW102 P 1-12 (No.MB556) 3.1.8Removing the front key board (See Fig.16, 17) Remove the top cabinet, the rear cabinet, the AMP board, 5DVD mechanism assembly, the front cabinet assembly and the front VFD board. (1) From the inside of the front cabinet assembly, remove the seven screws Q attaching the front key board. (See Fig.16) (2) Release the two claws g and the four claws h and then re- move the front key board from the front cabinet assembly. (See Fig.16) (3) Remove the knobs from the front side simultaneously. (See Fig.17) (4) Take out the front key board while lifting it from the front cabinet assembly little by little. 3.1.9Removing the phone board (See Fig.16) Remove the top cabinet, the rear cabinet, the AMP board, 5DVD mechanism assembly and front cabinet assembly. (1) From the inside of the front cabinet assembly, remove the three screws R attaching the phone board. (2) Take out the phone board from the front cabinet assembly. Fig.16 Fig.17 h g Q R Front key board Phone board Q Front cabinet assembly Knob (No.MB556)1-13 3.1.10 Removing the jog LED board, volume LED board and USB LED board (See Fig.18) Remove the top cabinet, the rear cabinet, the AMP board, the 5DVD mecha