Jvc-CHX-1000-RF-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL No.49594 Feb. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. This service manual is printed on 100% recycled paper. CH-X1000 /X000RF CH-X1000 / CH-X1000RF Contents Safety precaution Important for laser products Location of main parts Removal of main parts Pickup replacement procedu

2、re JC 12 Forced eject procedures 1-2 1-3 1-4 1-5 1-20 Troubleshooting Wiring connections Description of major ICs 1-21 1-27 1-28 CH-X1000RF is a combination of CH-X1000 and KS-RF37. KS-RF37 is a combination of Remote control and the RF unit. KS-RF37 CH-X1000 Area Suffix JNorthern America 1-18 COMPAC

3、T DISC AUTOMATIC CHANGER RadioFans.CN 收音机爱 好者资料库 ! 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. Safety precaution ! Please use enough caution not to see the beam directly or touch it

4、 in case of an adjustment or operation check. 1-2 RadioFans.CN 收音机爱 好者资料库 Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid direct exposure to beam. 3.CAUTION : There are no serviceable parts inside the Laser

5、Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The compact disc player uses invisible laserradiation and is equipped with safety switches whichprevent emission of radiation when the drawer is open and the safety interlocks have failed or are

6、de feated. 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 herein may result in hazardous radiation exposure. VARNING : Osynlig l

7、aserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. ADVARSEL : Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. ADV

8、ARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling. REPRODUCTION AND POSITION OF LABELS WARNING LABEL DANGER : Invisibie laser radiation when open and interlock or defeated. AVOID DIRECT EXPOSURE TO BEAM (e) VARNING : Osynlig laserstrlning r denna de

9、l r ppnad och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. (d) ADVARSEL :Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. (f) !CAUTION Please

10、 use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. Caution. This production contains laser component of higher laser class than Class 1. Top panel of the unit Gerateoberseite Panneau superieur de lappereil 1-3 RadioFans.CN 收音机爱 好者资料库 Location of

11、 main parts Bottom view Top side view Remove the main board view Main board assyMechanism assy wire Jack board assy Mechanism board assySensor board assy Positioning motor assy Mechanism Digital: 0) RF signal Focus Servo Loop ON TERMINAL Microprocessor commands Microprocessor commands Tracking Servo

12、 Loop ON Servo CLV Rough Servo AccelerAccelerationationAcceleration Microprocessor commands Spindle motor (+) 20 FMO TC9462 53 CN502 5 or CN503 22 1-22 Turn the power on with no magazine loaded. Reset Move the lifter until it comes to the STOP position (shipping position). Connect the receiver, etc.

13、 and turn the power on. Set to the changer mode. CD changer indication appears on the receiver, etc. Load the magazine. Is the disc pulled out to start play? Is voltage present at IC521 pin z 2.5 V while the disc rotates? Is the disc taken out? Is the disc rotated? Is track selection or search perfo

14、rmed correctly? 10. Is the playback sound normal? Normal Proceed to the Signal Processing section. Proceed to the Tracking section. The lifter moves up or down and stops. The position motor does not function. The tray motor goes forward and back several times. Check the connections to the receiver o

15、r the circuits in the vicinity of IC651. Check the linear position sensor (VR601). Check the wiring of the CD 9 V power supply position motor. Check the TRAY-IN and TRAY-OUT switches. Exchange discs, then check whether or not the feed motor moves. Set from the STOP to PLAY mode, then check that the

16、triangle wave appears at IC581 pins H and I . Does the laser emit? Check the MAG SW, TRAY-IN, and TRAY- OUT switches. Proceed to the Focus section. Proceed to the Focus section. Proceed to the Signal Processing section. Check the RESET switch and feed section Check the vicinity of IC501 6and 7. (Ref

17、er to the Feed section). YES YES YES YES YES YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO NO NO NO NO NO General section 1-23 Feed section Focus section Tracking section Spindle section Is the voltage output at IC521 pin u 5V or 0V? Check the feed motor. Is 4V present at both sides of the

18、 feed motor? Is the wiring for IC521 (90) (100) correct? Check IC581. Is 6V or 2V present at IC581 Q and R? Is 5V present at IC581 pin 6? Check the feed motor connection wiring. Check the vicinity of IC521. Check CD 9V and 5V. YES YES YES NONO NO NO YES YES When the lens is moving: Check the circuit

19、s in the vicinity of IC581 pins H K. Check the pickup and its connections. NO YES YES Does the S-search waveform appear at IC581 pins H and I? Is the disk rotated? Does the RF signal appear at TP1? Is 4V present between IC581 pins 1 and 2? Check the spindle motor and its wiring. Is 4V present at IC5

20、21 pin x? Check the vicinity of IC581. Check IC501 and IC521. YES NO NO NO NONO YES YES YES Check the circuits in the vicinity of IC501 J O or the pickup Is the RF waveform at TP1 distorted? Proceed to the Tracking section When the disc is rotated at first: Check the circuit in the vicinity of IC501

21、 pins 2C. Check IC521. Check the pickup and its connections. YESYES YES Is the tracking error signal output at TP3? Approx. 1.2 V 4V 1-24 Signal processing section No sound from either channel. Is 9V present at IC101 pin (8)? Compare the L-ch and R-ch to locate the defective point. Is the sound outp

22、ut from both channels (L, R)? Check the vicinity of the Q981 audio power supply. NO NONO NO YES YES YES YES YES Check IC521 and its peripheral circuits. Is the audio signal (including sampling output components) output to IC521 pins and | during Is the audio signal output at IC101 pins 1 and7during

23、playback? NOCheck IC101 and its peripheral circuits Check the muting circuit. Normal 1-25 ABC 1 2 3 4 5 Wiring connections Wiring of mechanism board section Feed Motor Assy QUQ710-2614BJ QUQ110-1013BJ Connect Board CN503CN904 CN601 WJM0017-002A CN903 Spindol Motor Assy Mechanism Board Assy (SURFACE

24、SIDE) Sensor Assy Tray Motor Assy CN501 CN502 Pick Up Assy LV30450-003A 1-26 CH-X1000/CH-X1000RF DDDDDD DDDDDD x2x2 x2x2 x3/8x3/8 x3/8x3/8 LEVEL SHIFT VCCVCC VCCVCCVCC BIAS BIAS BIAS BIAS BIAS 13.3K 13.3K 13.3K 13.3K 100 100 100 100 LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT 10K 10K

25、 T.S.D 123456789101112131415 32313029282726252423222120191817 16 T.S.D: Thermal shut down circuit D: Driver buffer Unit of resistor: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 OUT1- OUT+ OUT2- OUT2+ IN 2 IN 1 VCC VCC REG-B REG OUT VCC IN3-R IN3-F OUT3+ OUT3- GND Driver CH1 negative output Driver CH1 pos

26、itive output Driver CH2 negative output Driver CH2 positive output Driver CH2 input Driver CH1 input Power supply Power supply Connect to external TR.BASE Constant voltage output(5V)(*3) Power supply driver CH3 reverse input Driver CH3 forward input Driver CH3 positive output Driver CH3 negative out

27、put ground 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 OUT4- OUT4+ OUT5- OUT5+ IN 5 IN 4 VCC BIAS IN GND GND VCC IN6-R IN6-F OUT6+ OUT6- GND Driver CH4 negative output Driver CH4 positive output Driver CH5 negative output Driver CH5 positive output Driver CH5 input Driver CH4 input Power supply

28、Bias input Substrate ground Substrate ground Power supply Driver CH6 reverse input Driver CH6 forward input Driver CH6 positive output Driver CH6 negative output ground Note 1) Positive output and negative output of phasing with input. Note 2) Loading positive output and loading negative output of p

29、hasing with mode. *3 Connect to external PNP transistor collector. No.SymbolFunctionNo.SymbolFunction 1.Terminal layout & Block diagram 2.Pin function BA5926S(IC581):CD/POSITION/TRAY DRIVER Descriprion of major ICs 1-27 UPD780058GC-067(IC601):CPU 2.Block diagram 1.Terminal layout 80 61 21 40 1 20 60

30、 41 PORT0 PORT1 PORT2 PORT3 PORT4 PORT5 PORT6 PORT7 PORT12 PORT13 REAL-TIME OUTPUT PORT EXTERNAL ACCESS SYSTEM CONTROL P00 P01-P06 P07 TO0/P30 TI00/INTP0/P00 TI01/INTP1/P01 TO1/P31 TI1/P33 TO2/P32 TI2/P34 SI0/SB0/P25 SO0/SB1/P26 SCK0/P27 SI1/P20 SO1/P21 SCK1/P22 STB/P23 BUSY/P24 S12/RXD/P70 SO2/TXD/

31、P71 SCK2/ASCK/72 ANI0/P10- ANI7/P17 ANO0/P130 ANO1/P131 AV33 AVREF0 AVss AVREF1 INTP0/P00- INTPS/P05 PCL/P35 BUZ/P36 P10-P17 P20-P27 P30-P37 P40-P47 P50-P57 P60-P67 P70-P72 P120-P127 P130-P131 RESET X1 X2 XT1/P07 XT2 RTP0/P120- RTP7/P127 RTP0/P120- RTP7/P127 A8/P50- A15/P57 RD/P64 WR/P65 WAIT/P66 AS

32、TB/P67 V00 VssIC BUZZER OUTPUT INTERRUPT CONTROL D/A CONVERTER A/D CONVERTER SERIAL INTERFACE2 SERIAL INTERFACE1 SERIAL INTERFACE0 WATCH TIMER WATCDOG TIMER 8-bit TIMER/ EVENT COUNTER2 8-bit TIMER/ EVENT COUNTER1 16-bit TIMER/ EVENT COUNTER1 CLOCK OUTPUT CONTROL 78K/0 CPU CORE ROM RAM 1-28 Pin No. P

33、ORT Name I/O Function Active Pin No. PORT Name I/O FunctionActive 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 LCDDA LCDSCK LCDCE AVSS ADCOUT NC AVREF1 NC NC CDCHECK EPROMDI EOROMDO EPROMCK LED BUS I/O BUS SI BUS SO BUS SCK NC NC NC N

34、C NC NC BUSOUT CD ON PWR CONT POSMO+ POSMO- TRAYMO+ TRAYMO- BUCK VSS1 LSI RESET CCE BUS0 BUS1 BUS2 BUS3 NC O O O - O O - O O I I/O O I/O O O I O I/O O O O O O O O O O O O O O O - O O I/O I/O I/O I/O O H H H H H L LCD driver data output LCD driver clock output LCD driver chip enable output Connect to

35、 ground Power on Hi output. Low in stop mode. Unused output port Connect to 5V Unused output port Unused output port CD check mode input. Reset only. EEPROM data input EEPROM data output. Hi durring input. EEPROM clock input/output Lifter LED output JVC bus input/output control(Lo:input) JVC bus dat

36、a input JVC bus data output JVC bus clock input/output Unused output port Unused output port Unused output port Unused output port Unused output port Unused output port JVC bus output CD power control Hi:on Power supply control output Hi:on Position motor control output Position motor control output

37、 Tray motor control output Tray motor control output CD LSI data clock Connect to ground CD LSI reset CD LSI chip enable CD LSI data 0(open drain) CD LSI data 1 (open drain) CD LSI data 2 (open drain) CD LSI data 3 (open drain) Unused output port 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58

38、 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 NC NC NC MAG IN TRAY IN TRAY OUT REST NC EMPH NC BUFF CONT TEST RUN NC NC NC MUTE STAGE NC EPROM CLF RESET REMOCON PWR DET PWR SW BUS INT EJECT NC VSS0 VDD1 X2 X1 IC XT2 XT1 VDD AVREF0 L SENSOR KEY1 KEY2 KEY3 KEY0 O O O - O O I O O O

39、 O I O O O O I O I I I I I I I I - - O I - O I - - I I I I I L L L L H L L H L L L L Unused output port Unused output port Unused output port Magazine switch Lo:magazine inserted Tray retract switch Lo:retraction complete Tray extend switch Lo:extension complete Resr switch Unused output port Emphas

40、is select output Hi:on Unused output port Buffer control output Test running input Unused output port Unused output port Unused output port Mute output. When reverse of earlier audio mute. Mute power OR output LCD,AD key,remote inhibit selector Low:inhidit Unused output port EEPROM clear input Funct

41、ional only dunng reset Reset input (includes flash write in function) Remote controller signal input Memory power detect input CRTL+B detect input JVC bus com start interrupt input Eject key input Unused output port Connect to ground Connect to 5V Oscillater (4.19430 MHz) Oscillater (4.19430 MHz) Co

42、nnect to ground Open Connect to VDD Connect to 5V Connect to ADCONT Linear sensor input(8 bit A/D input) Key input 1 (8 bit A/D input) Key input 2 (8 bit A/D input) Key input 3 (8 bit A/D input) Key input 0 (8 bit A.D input) 3.Pin function UPD780058GC-067 1-29 2.Pin function 50 VREF 49 TRO 48 FOO 47

43、TEZI 46 TEI 45 TSIN 44 SBAD 43 FEI 42 RFRP 41 RFZI 40 RFCT 39 AVDD 38 RFI 37 SLCO 36 AVSS 35 VCOF 34 VCOREF 33 PVREF 32 LPFO 31 LPFN 81DVSR 12345678910111213141516171819202122232425262728 TEST0 HSO UHSO EMPH LRCK VSS BCK AOUT DOUT MBOV IPF SBOK CLCK VDD VSS DATA SFSY SBSY SPCK SPDA COFS MONIT VDD TE

44、SIO0 P2VREF HSSW ZDET PDO 29 TMAXS 30 TMAX 80 XVDD 79 XO 78 XI 77 XVSS 76 VDD 75 PXO 74 PXI 73 VSS 72 TESIO1 71 TESIN 67 IO3 66 IO2 65 IO1 64 IO0 63 VSS 62 VDD 61 FLGD 60 FLGC 59 FLGB 58 FLGA 57 SEL 56 2VREF 55 DMO 54 FVO 53 FMO 52 TEBC 51 RFGC 82RO 83DVDD 84DVR 85LO 86DVSL 87TEST1 88TEST2 89TEST3 9

45、0BUS0 91BUS1 92BUS2 93BUS3 94VDD 95VSS 96BUCK 97CCE 98TEST4 99TSMOD 100RST 70 DACT 69 CKSE 68 DMOUT - + - + LPF 1bit DACClock generator Servo control PWMD/A A/D Digital equalizer Automatic adjustment circuit ROM RAM CLV servo Address circuit Micon interface Correction circuit Audio out circuit 16KRA

46、M Digital out Sub code decoder Status Synchronous guarantee EFM decode PLL TMAX VCO Data slicer TC9462F(IC521): DSP&DAC 1.Pin layout & Block Diagram PIN No. 1 2 3 SYMBOL TEST0 HSO UHSO I/O I O O FUNCTIONAL DESCRIPTION Test mode terminal.Normally, Keep at open. Playback speed mode fllag output termin

47、al. Subcode Q data emphasis flag output terminal.Emphasis ON at H level and OFF at L level.The output polarity can invert by command. Channel clock output terminal.(44.1khz)L-ch at L level and R-ch at H level. the output polarity can invert by command. REMARKS With pull-up resistor. UHSO H H L L HSO

48、 H L H L PLAYBACK SPEED Nomal 2 times 4 times - - + - + Digital GND terminal. Bit clock output terminal.(1.4122MHz) Audio data output terminal. Digital data output terminal. Buffer memory over signal output terminal. Over at H level. Correction flag output terminal. At H level,AOUT output is made to correction impossibility by C2 correction processing. Subcode Q data CRCC check adjusting result output terminal. The adjusting result is OK at H level. Subcode P W data reabout clock input/output terminal. This terminal can select by comman