JVC-DD3EE-nms-sm 维修电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2006 Victor Company of Japan, LimitedNo.MB5632006/11NETWORK MEDIA SYSTEMMB563200611DD-8B,DD-8E,DD-8EN,DD-8EV,DD-8EE,DD-3B,DD-3E,DD-3EN,DD-3EV,DD-3EELead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS1PRECAUTION. . . . . .
2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-83DISASSEMBLY . . . . .
3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-94ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-325TROUB
4、LESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35(Only for DD-8 and DD-3)CA-DD8SP-DD8FSP-DD8FSP-PWDD8SP-DD8SCA-DD3SP-DD3FSP-DD3F SP-PWDD3SP-DD8SRadioFans.CN 收音机爱 好者资料库1-2 (No.MB563)SPECIFICATIONMain unit
5、(CA-DD8/CA-DD3)Subwoofer for DD-8 (SP-PWDD8)TunerFM frequency : 87.50 MHz - 108.00 MHzAM frequency : 522 kHz - 1 629 kHzTerminal (front of the main unit)Audio output headphone terminal 1Impedance : 16 to 1 kUSB digital input terminal 1Analog input terminal 1Stereo mini jackAnalog output terminal 1St
6、ereo mini jackTerminal (rear of the main unit)Optical digital input terminal 1-23 dBm to -15 dBmOptical digital output terminal 1-23 dBm to -15 dBmSystem terminal 1Component video output terminals (3) 1Y : 1.0 Vp-p, sync negative, 75 terminatedPB : 0.7 Vp-p, 75 terminatedPR : 0.7 Vp-p, 75 terminated
7、Audio input terminals (2) 1500 mV/47 kSCART terminal 1AM antenna terminal 1FM antenna terminal 1Ethernet terminalHDMI monitor output terminalUSBCompatible with USB 2.0 Full-SpeedCompatible device : Mass storage class deviceCompatible file system : FAT16, FAT32Bus power supply : Max. 500 mAGeneralPow
8、er source : AC 230 V , 50 HzPower consumption (in operation) : 25 WPower consumption (on standby) : 0.5 WDimensions (W H D) : 445 mm 55 mm 286.4 mm (including projecting parts)Weight : 3.5 kg (CA-DD8), 3.0 kg (CA-DD3)TypeBass reflex type, Magnetically shielded typeAmplifierSubwoofer : 120 W at 4 (11
9、0 Hz, THD 10%)Left/right speaker : 25 W 2 at 3 (1 kHz, THD 10%)Center surround speaker : 25 W 2 at 3 (1 kHz, THD 10%)Speaker16 cm conePower handling capacity : 120 WImpedance : 4 Frequency range : 30 Hz - 230 HzSound pressure level : 72 dB/WmGeneralPower source : AC 230 V , 50 HzPower consumption :
10、120 WDimensions (W H D) : 242 mm 364 mm 363 mmWeight : 12.6 kgRadioFans.CN 收音机爱 好者资料库(No.MB563)1-3Subwoofer for DD-3 (SP-PWDD3)Left and right speakers forDD-8 (SP-DD8F)Left and right speakers forDD-3 (SP-DD3F)Center surround speaker for DD-8/DD-3 (SP-DD8S)Designs and specifications are subject to ch
11、ange without notice.TypeBass reflex typeAmplifierSubwoofer : 120 W at 4 (110 Hz, THD 10%)Left/right speaker : 25 W 2 at 3 (1 kHz, THD 10%)Center surround speaker : 25 W 2 at 3 (1 kHz, THD 10%)Speaker16 cm conePower handling capacity : 120 WImpedance : 4 Frequency range : 30 Hz - 230 HzSound pressure
12、 level : 72 dB/WmGeneralPower source : AC 230 V , 50 HzPower consumption : 120 WDimensions (W H D) : 242 mm 364 mm 363 mmWeight : 12.3 kgType2-way 3-speaker bass reflex type, Magnetically shielded typeSpeaker8 cm cone 2 + 2 cm domePower handling capacity30 WImpedance3 Frequency range60 Hz - 40 kHzSo
13、und pressure level81 dB/WmDimensions (W H D)289 mm 1 101 mm 289 mmWeight (1 unit)10.0 kgType2-way acoustic suspension type, Magnetically shielded typeSpeaker9.5 cm 1 cm direct drive + 2 cm domePower handling capacity30 WImpedance3 Frequency range100 Hz - 40 kHzSound pressure level78 dB/WmDimensions
14、(W H D)165 mm 376 mm 165 mm (including stand)Weight (1 unit)1.0 kg (including stand)Type1-way acoustic suspension type, Magnetically shielded typeSpeaker9.5 cm 1 cm direct-drivePower handling capacity30 WImpedance3 Frequency range120 Hz - 40 kHzSound pressure level79 dB/WmDimensions (W H D)344 mm 61
15、 mm 76 mm (including stand)Weight0.95 kg (including stand)1-4 (No.MB563)SECTION 1PRECAUTION1.1Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original
16、 design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services should be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the pro
17、duct shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related char
18、acteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in
19、 the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement parts sh
20、own inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with ties,clamps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric s
21、hock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have been returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, always perform an isola-tion check on the expose
22、d metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, control shafts, etc.) to be sure the productis safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into the AC o
23、utlet. Using aLeakage Current Tester, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.). Alternate check methodPlug the
24、 AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivityin the following manner. Connect a 1,500 10W resistorparalleled 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
25、 with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot exceed
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