Jvc-KDAVX-77-A-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2009 Victor Company of Japan, Limited No.MA454 2009/6 DVD/CD RECEIVER MA45420095 SERVICE MANUAL KD-AVX55E, KD-AVX55EU, KD-AVX55EE, KD-AVX55A, KD-AVX77J, KD-AVX77E, KD-AVX77EU, KD-AVX77EE, KD-AVX77A COPYRIGHT 2009 Victor Company of Japan, Limited Lead free solder used in the

2、board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade) TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . . . . . . . . 1-5 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . . . . . . . . . 1-9 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、. . . . . . . . . . . . . . . . 1-28 Only for KD-AVX77 Only for KD-AVX77J Except KD-AVX77JExcept KD-AVX77J RadioFans.CN 收音机爱 好者资料库 1-2 (No.MA454) SPECIFICATION KD-AVX77J AMPLIFIER Power Output20 W RMS 4 Channels at 4 and or = 1% THD+N Signal-to-Noise Ratio80 dBA (reference: 1 W into 4 ) Load Impedan

6、ce4 (4 to 8 allowance) Equalizer Control RangeFrequencies60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz Level10 dB Audio Output Level LINE OUT (FRONT, REAR), CENTER OUT, SUBWOOFER OUT Line-Out Level/Impedance5 V/20 k load (full scale) Output Impedance1 k Color SystemNTSC Video Output (compos

7、ite)1 Vp-p/75 Other TerminalsInputLINE IN, VIDEO IN, USB input, Antenna input Output2nd AUDIO OUT OthersCD changer, OE REMOTE, MIC IN FM/AM TUNER Frequency RangeFMwith channel interval set to 100 kHz or 200 kHz87.5 MHz to 107.9 MHz with channel interval set to 50 kHz87.5 MHz to 108.0 MHz AMwith chan

8、nel interval set to 10 kHz530 kHz to 1 710 kHz with channel interval set to 9 kHz531 kHz to 1 602 kHz FM TunerUsable Sensitivity9.3 dBf (0.8 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz)65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation40 dB

9、AM TunerSensitivity/Selectivity20 V/40 dB DVD/CD Signal Detection SystemNon-contact optical pickup (semiconductor laser) Frequency ResponseDVD, fs=48 kHz16 Hz to 22 000 Hz DVD, fs=96 kHz16 Hz to 44 000 Hz VCD/CD16 Hz to 20 000 Hz Dynamic Range93 dB Signal-to-Noise Ratio95 dB Wow and FlutterLess than

10、 measurable limit USB USB StandardsUSB 2.0 Full Speed Data Transfer RateFull SpeedMaximum 12 Mbps Low SpeedMaximum 1.5 Mbps Compatible DeviceMass storage class Compatible File SystemFAT 32/16/12 Max. CurrentDC 5 V 500 mA BLUETOOTH VersionBluetooth 1.2 certified Output Power+4 dBm Max. (Power class 2

11、) Service AreaWithin 10 m (10.9 yd) RadioFans.CN 收音机爱 好者资料库 (No.MA454)1-3 Design and specifications are subject to change without notice. KD-AVX77/KD-AVX55 (Except KD-AVX77J) ProfileHFP (Hands-Free Profile) 1.5 OPP (Object Push Profile) 1.1 A2DP (Advanced Audio Distribution Profile) 1.2 AVRCP (Audio

12、/Video Remote Control Profile) 1.3 MONITOR Screen Size5.4 inch wide liquid crystal display Number of Pixel576 000 pixels: 800 (horizontal) 3 (RGB) 240 (vertical) Drive MethodTFT (Thin Film Transistor) active matrix format Color SystemPAL/NTSC Aspect Ratio3.32:1 (Super wide) GENERAL Power Requirement

13、Operating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Storage Temperature-10C to +60C (14F to 140F) Allowable Operating Temperature0C to +40C (32F to 104F) Dimensions (W H D)Installation Size (approx.) 182 mm 52 mm 160 mm (7-3/16” 2-1/16” 6-5/16”) Panel Size (

14、approx.)188 mm 58 mm 12 mm (7-7/16” 2-5/16” 1/2”) Mass (approx.)2.2 kg (4.9 lbs) (excluding the accessories) AMPLIFIER Maximum Power OutputFront/Rear50 W per channel Continuous Power Output (RMS)Front/Rear20 W per channel into 4 , 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion Loa

15、d Impedance4 (4 to 8 allowance) Equalizer Control RangeFrequencies60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz Level10 dB Signal-to-Noise Ratio70 dB Audio Output Level LINE OUT (FRONT, REAR), CENTER OUT, SUBWOOFER OUT Line-Out Level/Impedance5 V/20 k load (full scale) Output Impedance1 k C

16、olor SystemNTSC/PAL* Video Output (composite)1 Vp-p/75 Other TerminalsInputLINE IN, VIDEO IN, USB input, Aerial input Output2nd AUDIO OUT OthersCD changer, OE REMOTE, MIC IN FM/AM TUNER Frequency RangeFM87.5 MHz to 108.0 MHz AM(MW) 522 kHz to 1 620 kHz (LW) 144 kHz to 279 kHz FM TunerUsable Sensitiv

17、ity9.3 dBf (0.8 V/75 ) 50 dB Quieting Sensitivity16.3 dBf (1.8 V/75 ) Alternate Channel Selectivity (400 kHz)65 dB Frequency Response40 Hz to 15 000 Hz Stereo Separation40 dB MW TunerSensitivity/Selectivity20 V/40 dB RadioFans.CN 收音机爱 好者资料库 1-4 (No.MA454) Design and specifications are subject to cha

18、nge without notice. LW TunerSensitivity50 V DVD/CD Signal Detection SystemNon-contact optical pickup (semiconductor laser) Frequency ResponseDVD, fs=48 kHz16 Hz to 22 000 Hz DVD, fs=96 kHz16 Hz to 44 000 Hz VCD/CD16 Hz to 20 000 Hz Dynamic Range93 dB Signal-to-Noise Ratio95 dB Wow and FlutterLess th

19、an measurable limit USB USB StandardsUSB 2.0 Full Speed Data Transfer RateFull SpeedMaximum 12 Mbps Low SpeedMaximum 1.5 Mbps Compatible DeviceMass storage class Compatible File SystemFAT 32/16/12 Max. CurrentDC 5 V 500 mA BLUETOOTH (KD-AVX77 only) VersionBluetooth 1.2 certified Output Power+4 dBm M

20、ax. (Power class 2) Service AreaWithin 10 m ProfileHFP (Hands-Free Profile) 1.5 OPP (Object Push Profile) 1.1 A2DP (Advanced Audio Distribution Profile) 1.2 AVRCP (Audio/Video Remote Control Profile) 1.3 MONITOR Screen Size5.4 inch wide liquid crystal display Number of Pixel576 000 pixels: 800 (hori

21、zontal) 3 (RGB) 240 (vertical) Drive MethodTFT (Thin Film Transistor) active matrix format Color SystemPAL/NTSC Aspect Ratio3.32:1 (Super wide) GENERAL Power RequirementOperating VoltageDC 14.4 V (11 V to 16 V allowance) Grounding SystemNegative ground Allowable Storage Temperature-10C to +60C Allow

22、able Operating Temperature0C to +40C Dimensions (W H D)Installation Size (approx.) 182 mm 52 mm 160 mm Panel Size (approx.)188 mm 58 mm 12 mm Mass (approx.)2.2 kg (excluding the accessories) (No.MA454)1-5 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special har

23、dware 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- for

24、med 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

25、 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 u

26、s- 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 Par

27、ts 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

28、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 tha

29、t 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

30、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

31、- 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 foll

32、owing 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

33、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 design

34、ed 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 repl

35、aced 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 sa

36、fety 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

37、 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 1-6 (No.MA454) 1.5Preventing st

38、atic 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 elect

39、ricity 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 conducti

40、ve 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 installatio

41、n, 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 eas

42、ily 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 speci

43、fic 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

44、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 card wire is disconnected from the connecto o

45、n the servo board. (If the card 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 card wire. 1M Conductive material (conductive sheet) or iron palate (caption)

46、Anti-static wrist strap Solder short part (No.MA454)1-7 1.8Important 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 v

47、iew 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 emis

48、sion 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

49、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 1-8 (No.MA454) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MA454)1-9 SECTION 3 DISASSEMBLY 3.1Main body (Used figure are KD-AVX77E) 3.1.1Removing the Top chassis with DVD mechanism (See Fig.1 to 4