JVC-XLR910SL-cd-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COMPACT DISC RECORDER No.A0009 Apr. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. XL-R910SL XL-R910SL Area Suffix J - U.S.A. C - Canada B - U.K. E - Continental Europe EN - Northern Europe This service manual is printed on 100% recycled paper. Contents Safety precautions - 1-2 Dis

2、assembly method - 1-3 Troubleshooting - 1-6 Description of major ICs - 1-11 RadioFans.CN 收音机爱 好者资料库 XL-R910SL 1-2 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the origin

3、al design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only. 2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the

4、 product should not be made. Any design alterations or additions will void the 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 character

5、istics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the P

6、arts List of Service 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 characteristics as the recommended replacement parts shown i

7、n 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 s

8、hock 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 reassembling. 5. Leakage current check (Electrical shock hazard testing) After reassembling the product, always perform an

9、isolation check on the exposed metal parts of the product (antenna 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

10、line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet , particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s

11、.) Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground.

12、 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

13、measurement. voltage measured Any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 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. Repair

14、s 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. Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (

15、Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. RadioFans.CN 收音机爱 好者资料库 XL-R910SL 1-3 Disassembly method Removing

16、the metal cover (See Fig.1) Removing the front panel assembly (See Fig.25) 1.Remove the three screws A attaching the metal cover on the back of the body. 2.Remove the four screws B attaching the metal cover on both sides of the body. 3.Remove the metal cover from the body by lifting the rear part of

17、 the cover. ATTENTION : Do not break the front panel tab fitted to the metal cover. * Prior to performing the following procedure, remove the metal cover. 1.Remove the three screws C attaching the front panel assembly on the bottom of the body and both sides of the body. 2.Disconnect the card wire f

18、rom connector CN601 on the servo control board. 3.Disconnect the 4pin wire from connector CN502 on the servo control board. 4.Disconnect the 3pin wire and 8pin wire from connector ACW1 and RCW2 on the main board. Please remove a tie band if necessary. Please fix the wire again with a tie band when a

19、ssembling. 5.Release the two joints a on the lower part of the sides using a screwdriver, and remove the front panel assembly toward the front. Fig. 2 Fig. 3 Fig. 4 C C Metal cover B x 2 A A A Fig. 1 B x 2 C Front panel assembly joint a Joint a Front panel assembly Front panel assembly Fig. 5 ACW1 M

20、ain board Tie band Tie band G NCW1 CN502 CN701 CN601 D F F RCW1 RCW2 Mechanism assembly RadioFans.CN 收音机爱 好者资料库 XL-R910SL 1-4 Removing the power button arm (See Fig.6) * Prior to performing the following procedure, remove the metal cover and front panel assembly. The power button arm is lifted up wh

21、ile holding the power switch(orange color part) and removes. Removing the mechanism assembly (See Fig.6) * Prior to performing the following procedure, remove the metal cover and front panel assembly. 1.Disconnect the card wire from connector CN501 on the servo control board. 2.Disconnect the 6pin w

22、ire from connector CN701 on the servo control board. 3.Remove the four screws D attaching the mechanism assembly. *Please fix two earth wires together when you install the mechanism assembly. Removing the main board (See Fig.5,7) * Prior to performing the following procedure, remove the metal cover.

23、 1.Remove the four screws E attaching the each terminal on the rear panel. 2.Disconnect the 9pin,8pin and 3pin wire from connector RCW1,RCW2 and ACW1 on the main board. 3.Disconnect the card wire from connector NCW1 on the main board. 4.Disconnect the 6pin wire from connector CN701 on the servo cont

24、rol board. 5.Remove the screw D attaching the earth wire. 6.Remove the two screws F and one screw G attaching the main board. Please remove a tie band if necessary. Please fix the wire again with a tie band when assembling. Fig. 6 Main board D D D D Mechanism assembly Power button arm Orange color p

25、art Earth wire CN501 CN701 Earth wire Fig. 7 E EEE Cord bushing Fig. 5 ACW1 Main board Tie band Tie band G NCW1 CN502 CN701 CN601 D F F RCW1 RCW2 Mechanism assembly XL-R910SL 1-5 Removing the power transformer (See Fig.68) * Prior to performing the following procedure, remove the metal cover. 1.Powe

26、r button arm is removed from power switch 2.Disconnect 9pin wire from connector RCW1 on the main board. 3.The code bushing is pulled out for above. 4.Remove the four screws H attaching the power transformer. Please remove a tie band if necessary. Please fix the wire again with a tie band when assemb

27、ling. Fig. 6 Mechanism assembly Power button arm Orange color part Tie band Fig. 8 Main board Power transformer board Power transformer H H RCW1 Tie band Fig. 7 Cord bushing XL-R910SL 1-6 Troubleshooting Power supply / VFD (FL display) section When trouble is found in the power supply and the FL dis

28、play. Check voltage pin No13,14,18,46,72 of UIC1 front PCB : 5V(VDD) Check voltage output of RIC1(7805) :5V? Check voltage input of RIC1(7805) :8V? Check voltage positive of RC7(6800uF/25V) at main PCB : 12V? Check connector (UCW1) front PCB to main PCB Replace RIC1 Replace RQ4, RZD4,RR5 Check for R

29、C7,RD5,RD6,RD7,RD8, RFU3,RCW1,PFU1/PFU2 Check oscillation of UX1(6MHz) at front PCB Check voltage pin No27(p.sense) of UIC1 : 5V Check voltage output of RIC3(78L05) at main PCB : 5V? Check voltage positive of MC1(10uF/50V) :15V? Replace UX1,SC4, SC5,UIC1 Check for UCW1(8P), SR3,UC7,UD1,UQ1,UC6,UR2 R

30、eplace RIC3 Check for MC1,MR1,MD1, RCW1,RFU3,PFU1/PFU2 Check voltage pin No46 of UIC1 :-30V? Check voltage negative of RC9 (100uF/500V) :-30V? Check voltage negative of RC8 (100uF/100V) :-42V? Check for RC8,RD9,RR9 RCW1,PFU1/PFU2 Check connector(UCW1) from front PCB to main PCB Check for RR6,RZD5, R

31、ZD6,RR7,RZD7 Check voltage between 1 and 2, between 48 and 49 of VFD1 :AC4V? -Check connector of UCW1 -Check for RCW1,PFU1/PFU2 Replace micom ,VFD1 NoNoNoNo NoNoNo No No NoNo No YesYesYesYes YesYesYes Yes Yes YesYes Yes XL-R910SL 1-7 Analog output (play mode) When trouble is found in the analog sign

32、al output. Check voltage pin No2,3 of DAC(NIC1, AK4324) at main PCB : 5V? Check voltage output of RIC2(78L05) :5V? Check voltage input of RIC2(78L05) :8V? Check voltage positive of RC7(6800uF/25v) at main PCB : 12V? Check NL1(10uF) Replace RIC2 Replace RQ3, RZD3,RR3 Check for RC7,RD5,RD6,RD7,RD8, RF

33、U3,RCW1,PFU1/PFU2 Check voltage pin No5 of MIC1(DAC, AK4324):5V? Check voltage output of RIC3(78L05) :5V? Check voltage positive of MC1(10uF/ 50V) :15V? Check for NC20,NR20 Replace RIC3 Check wave input pin No 4(MCLK: 16,9344MHz),6(BCK),7(DATA), 8(LRCK), of NIC1 (DAC,AK4324) : normal? Check wave out

34、put pin No 1,2,3,4, of NCW1(17P FPC) :normal? Check NR1,2,3,4 Check voltage pin No 9 of NIC1(DAC, AK4324) : 0V? -Check for mute micom and RCW2 NoNoNoNo NoNoNo No No Check solder of NIC1 No No YesYesYesYes YesYesYes Yes Yes Check analog wave output of AR1,2,3,4 (10k) Yes Check for AIC1,AIC2(4560), OP

35、 amp 4560 No Check analog wave output at pin No1,7 of AIC2(4560) Yes -Check solder of AJA1 -Check analog wave of AJA1 -Check connector of audio cable No Check voltage base of MQ5,MQ6(C945) :0.6V Yes Yes Check voltage of RJW2 : -8V? RJW4 : +8V? Check voltage output of RC6(2200uF/25) : +12V? RC7(2200u

36、F/25V) : -12V? NoNo Yes Yes Check for MC1,MR1,MD1, RCW1,RFU3,PFU1/PFU2 -Check connecting of NCW1(17P FPC) -Replace mechanism Check for RD1,2,3,4(IN4002) RFU1,RFU2(1A),RCW1,PFU1,PFU2 Check for RQ2,RZD2,RR2, RQ1,RZD1,RR1 Check for micom mute line, MR6,MQ3,MQ4,MD4,MD5,MQ1 XL-R910SL 1-8 Digital output W

37、hen trouble is found in the optical output and coaxial output. Check signal (digital) input pin No 1 of NIC1(74HCN04) Check signal (digital) input pin No 15 of NCW1(17P) Check for MR14,NC7 Check signal (digital) output pin No 4,6 of NIC1(74HCU04) Check voltage of NIC1(74HCU04) pin No14:5V? No7:0V? C

38、heck voltage input of RIC2(78L05) :8V? Replace NIC1 Replace RIC2 Check voltage pin No2 of NOM2 (optical transmitter) :5V? -Check for NEF1,NEF2,NR10,NR11,NR12 -Replace NOM2 -Check solder of between NOM2 and NJA1 -Check for optical cable and coaxial cable NoNo NoNoNo No YesYes Check voltage positive o

39、f RC7(6800uF/25v) at main PCB : 12V? Replace RQ3, RZD3,RR3 Check for RC7,RD5,RD6,RD7,RD8, RFU3(2.5A),RCW1,PFU1/PFU2 No Yes YesYesYes Yes Check connector to NCW1(17P) Check mechanism XL-R910SL 1-9 Mechanism operation When trouble is found in the mechanism operating. (rotation,play,tray open/close,lea

40、d) Check voltage pin No 2 of RCW3(6P) at main PCB : 8V? Check voltage positive of RC7(6800uF/ 25V) : 12V? Check for RQ3,RZD3,RR3 Check voltage pin No 4,6 of RCW3(6P) at main PCB : 5V? Check voltage input of RC1(7805) :8V? Check voltage positive of RC7(6800uF/ 25V) : 12V? Replace RIC1 Check for RQ4,R

41、ZD4,RR5 NoNo NoNo YesYes Yes Yes Check wave pin No3(CDR-RCT) of UCW2(9P) at front PCB when power ON No Yes Check wave pin No49 of UCW2(9P) :interface wave ? No Yes YesYes Replace mechanism Check for RC7,RD5,RD6,RD7,RD8 RFU3(2.5A),RCW1,PFU1,PFU2 -Check pin No 1 of micom(UIC1) -Check connecting of UCW

42、2(9P) XL-R910SL 1-10 Digital recording (CD-R/CD-RW Disc, Unfinalize condition) When trouble is found in the digital recording (optical recording). Analog recording (CD-R/CD-RW Disc, Unfinalize condition) When trouble is found in the analog recording. Check selecting for source at front panel :optica

43、l Check signal (digital) input pin No11 of NCW1(17P) Check voltage pin No3 of NOM1(optical receiver) : 5V? -Check for NR13,NC13 -Check solder of NOM1,NCW1 No NoNo Yes YesYes -Check connector of NCW1(17P) -Check mechanism Selecting optical mode by source key Check selecting mode for source at front p

44、anel : analog No Yes Selecting analog mode by source key Check location VR(ana.rec) at front panel : 3oclock No Yes Adjust volume (analog rec.) Check signal (analog) input pin No 1,3 of ACW1(3P) No Yes -Check for AC6,AC7,AC22,AD23,AC24 AC25,AR25,AR26,AR27,AR28 -Check solder AJA1 Check signal (analog

45、) input pin No 5,6 of UVR1 at front PCB No Yes -Check connector UCW3 Check signal (analog) input pin No 1,3 of connector (4P) from mecha. to front PCB No Yes -Check signal of UVR1 -Check connector (4P) of mechanism Check voltage of RIC2(78L05) Replace mechanism XL-R910SL 1-11 Serial Input Interface

46、8x Interpolator 8x Interpolator Clock OSC/Divider De-emphasis Control Modulator Modulator SCF SCF DZFL AOUTL+ AOUTL- AOUTR+ AOUTR- DZFR LRCK BICK SDATA PD SMUTE DFS MCLK CKS DVDD DVSS VREF DIF0 DIF1 DIF2 DEM0 DEM1 AVDD AVSS AK4324(NIC1) : D/A Converter DVSS DVDD CKS MCLK PD BICK SDATA LRCK SMUTE DFS

47、 DEM0 DEM1 DZFL DZFR AVDD VREF AVSS AOUTL+ AOUTL- AOUTR+ AOUTR- DIF2 DIF1 DIF0 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 DVSS DVDD CKS MCLK PD BICK SDATA LRCK SMUTE DFS DEM0 DEM1 - - I I I I I I I I I I Digital ground terminal Digital power supply term

48、inal Master clock select pin Master clock input pin Power down mode pin Audio serial data clock pin Audio serial data input L/R clock pin Soft mute pin Double speed sampling mode De-emphasis frequency select De-emphasis frequency select Pin No. SymbolFunction 13 14 15 16 17 18 19 20 21 22 23 24 DIF0 DIF1 DIF2 AOUTR- AOUTR+ AOUTL- AOUTL+ AVSS VREF AVDD DZFR DZFL I I I O O O O - I - O O Digital input format pin Digital input format pin Digital input format pin Rch negative analog output Rch positive analog output Lch negative analog output Lch positive analog output Anal