JVC-MXK15R-cs-sm维修电路原理图.pdf

Flow of functional operation until TOC read Maintenance of laser pickup Replacement of laser pickup Description of major ICs Safety precautions Important for laser products Preventing static electricity Disassembly method Adjustment method Contents 1- 2 1- 3 1- 4 1- 5 1-19 1-21 1-22 1-22 1-23 No.21138 Dec.2002 MX-K10R/K30R/K15R SERVICE MANUAL COMPACT COMPONENT SYSTEM MX-K10R/K30R/K15R COPYRIGHT 2002VICTOR COMPANY OF JAPAN, LTD. Area Suffix E . Continetal Europe EN .Northern Europe B .U.K. EV .E. Europe/Russia CD-R/RW PLAYBACK 3-CD PLAY TW2111A, Reverse ; TW2121A Fast Forward and Rewind ; TW2231A 9. Test disc: CTS-1000(12cm),GRG-1211(8cm) 10. Jitter meter Measurement conditions Power supply voltage AC230V (50Hz) Measurement output terminal : Speaker out : TP101(Measuring for TUNER/ DECK/CD) : Dummy load 6ohm Radio input signal AM modulation frequency : 400Hz Modulation factor : 30% FM modulation frequency : 1kHz Frequency displacement : 22.5kHz Frequency Range FM 87.5MHz108MHz MW 522kHz1629kHz LW 144kHz228kHz Standard measurement positions of volume and switch Power: Standby (Light STANDBY Indicator) S, A, BASS : OFF Sound mode : OFF Main VOL. : 0 Minimum Travers mecha set position : Disc 1 Precautions for measurement 1. Apply 30pF and 33kohm to the IF sweeper output side and 0.082 F and 100kohm in series to the sweeper input side. 2. The IF sweeper output level should be made as low as possible within the adjustable range. 3. Since the IF sweeper is a fixed device, there is no need to adjust this sweeper. 4. Since a ceramic oscillator is used, there is no need to perform any MPX adjustment. 5. Since a fixed coil is used, there is no need to adjust the FM tracking. 6.The input and output earth systems are separated. In case of simultaneously measuring the voltage in both of the input and output systems with an electronic voltmeter for two channels, therefore, the earth should be connected particularly. 7. In the case of BTL connection amplifier, the minus terminal of speaker is not for earthing. Therefore, be sure not to connect any other earth terminal to this terminal. This system is of an OTL system. ? Arrangement of adjusting positions ? Tape recorder section Note: The adjustment of CD section is not required. ? Tuner section Items Measurement condi tions Measurement method Standard values Adjusting positions Cassette Head Azimuth Alignments Test tape : VT703 (10kHz) Measurement output terminal : Left and Right speaker output (6-ohm loaded) or Headphone Output (32-ohm loaded) 1. Playback the test tape VT703 (10KHz) or equivalent. 2. Adjust the head azimuth screw to obtain maximum output and both output of L / R is in 3dB. 3. Put on the screw lock paint after alignments. Maximum outputHead azimuth screw Adjust the head azimuth screw only when the head has been changed. Recording Bias Frequency Alignment Test tape : TYPE I AC-225 Measurement output terminal : Erase head terminal (CN308 8-Pin) 1. Insert the recording tape in deck-B. 2. Starting the recording. 3. Adjust the oscillation frequency to 80KHz+/-3KHz by core of Oscillation coil of L301. 80kHz+/-3kHzBias coil: L301 Use the High- Impedance Probe or Frequency counter input. Items Measurement condi tions Measurement method Standard values Adjusting posi tions AM Tracking Alignments Input signal : 529kHz (530kHz) 603kHz (600kHz) Measurement point : Resistor(R3) terminal 1. Set the Signal Generator signal to 529KHz (530KHz) the feed to Loop Antenna. 2. Receiving the signal and the adjust the OSC coil L4(MW)/L5(LW) obtain the V.T is 1.40V +/-0.05V. 3. Change the receiving frequency to 603KHz (600KHz). 4. Adjust the Antenna coil L2(MW)/L3(LW) obtain maximum sensitivity .(Adjust the SSG output to out of AGC range.) V.T : 1.40V+/-0.05V Maximum sensitivity OSC coil: L4(MW)/L5(LW) Antenna coil: L2(MW)/L3(LW) Adjust the OSC coil only when the AM coil block has been changed. AM IFT AlignmentsInput signal : 530kHz (529kHz) 1. Set the receiving frequency to 529KHz (530KHz ). 2. Feed the 450KHz signal to AM antenna input. 3. Adjust the IFT Block T1 obtain to maximum output. (Adjust the SSG output to out of AGC range.) Maximum outputIFT(T1) Adjust the IFT only when the IFT block has been changed. 1-20 1-21 Check Point Confirm that the voltage at the pin5 of CN602 is HLH. Flow of functional operation until TOC read Check that the voltage at the pin40 of IC601 is + 5V? Confirm that the Focus error S-cuve signal at the pin32 of IC601 is approx.2Vp-p Confirm that the signal from pin24 IC601 is 0V as a accelerated pulse during approx.400ms. Confirm the waveform of the Track- ing error signal. at the pin 20 of IC611 (R643) (See fig-1) Confirm the eys-pattern at the lead of Tp3 Slider turns REST SW ON. Automatic tuning of TE offset Laser ON Detection of disc Automatic tuning of Focus offset Automatic measurement of Focus S-curve amplitude Power ON Play Key Disc is rotated Focus servo ON (Tracking servo ON) Automatic measurement of Tracking error amplitude Automatic tuning of Tracking error balance Automatic tuning of Focus error balance Automatic tuning of Focus error gain Automatic tuning of Tracking error gain TOC reading Play a disc ?Tracking error waveform at TOC reading Approx 1.8V VREF pin 20 of IC611(TE) Approx.3sec Disc states to rotate Tracking servo off states Tracking servo on states Disc to be braked to stop TOC reading finishes Automatic measurement of TE amplitude and automatic tuning of TE balance 500mv/div 2ms/div Fig.1 1-22 Maintenance of laser pickupReplacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens with a alcohol soaked cot- ton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear. 1. The level of RF output (EFM output: ampli tude of eye pattern) will below. (3) Semi-fixed resistor on the APC PC board The semi-fixed resistor on the APC printed circuit board which is attached to the pickup is used to adjust the laser power. Since this adjustment should be performed to match the characteristics of the whole optical block, do not touch the semi-fixed resistor. If the laser power is lower than the specified value, the laser diode is almost worn out, and the laser pickup should be replaced. If the semi-fixed resistor would be adjusted when the pickup operates normally, the laser pickup may be dam- aged due to excessive current. 1-23 Description of major ICs ? AN22000A (IC611) : CD-DA Head Amp. 1. Terminal layout 2. Pin function 3. Block diagram 1 3 2 16 17 1-24 ? BA15218DIP (IC102) : Dual low noise operational amp. 1. Terminal layout ? BA5936S (IC621) : 6 channel BTL driver 1. Block diagram 2. Pin function 1-25 ? LA1833 (IC1) : 1chip AM/FM, MPX tuner system 1. Block diagram 2. Pin function 1-26 ? LC72136N (IC2) : PLL Frequency synthesizer 1.Terminal layout 2. Block diagram 3. Pin function 1-27 ? TA8189N (IC401) : REC/PB amp. 1. Terminal layout 2. Block diagram 3. Pin function 1-28 ? TC74HC4094AP (IC402) : 8-bit shift and store resister 1.Terminal layout 2. Block diagram 1-29 ? TDA7440D (IC101) : Audio processor 1. Terminal layout 2. Block diagram ? BU1924F (IC3) : RDS/RBDS decoder 1. Terminal layout 2. Block diagram 3. Pin function 1-30 1-31 ? MN662748RPM (IC601) : Digital servo & digital signal processor 1. Terminal layout 2. Pin function MX-K10R/K30R/K15R Printed in Japan 200212 No.21138 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK B.U.10-1, 1 Chome, Ohwatari-machi, maebashi-city, 371-8543, Japan SCHEMATIC DIAGRAMS No.21138SCH Dec. 2002 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. Contents Wiring Diagram Standard schematic diagrams Printed circuit boards 2-1 2-2 2-10 CD-ROM No.SML200212 COMPACT COMPONENT SYSTEM MX-K10R/K30R/K15R Area Suffix E .Continental Europe EN .Northern Europe B .U.K. EV .E. Europe/Russia CD-R/RW PLAYBACK 3-CD PLAY & EXCHANGE ACTIVE BASS EX. EJECTEJECT REC / PLAYBCD SYNCHRO RECORDINGPLAYAFULL - LOGIC CONTROL AUX CDTAPEFM / AM CD 3 CD 2 CD 1 COMPACT COMPONENT SYSTEM MX-K30R 1 BIT DUAL D/A CONVERTER PROGRAM SOUND MODE REPEAT PANDOM PRESET TUNING ST CANCEL PHONES REC START / STOP CD REC STARTDUBBING SET ANDBY/ONECO STANDBY / DEMO V O L U M E DISC SKIP R O C K I C L A S S C P O P CLOCK /TIMER TAPE A / B SELECTPTY / EONDISPLAY MODE FM MODEFM /AM AUX SLEEP STANDBY/ON CD1CD2CD3 SOUND SELECTPTY/EONMODE DISPLAY MODE ACTIVE BASS EX. FADE MUTING VOLUME PROGRAM /RANDOM REPEAT TAPE A/BTAPE CD BASS-REFLEXBASS-REFLEX CD-R/RW PLAYBACK 3-CD PLAY & EXCHANGE ACTIVE BASS EX. EJECTEJECT REC / PLAYBCD SYNCHRO RECORDINGPLAYAFULL - LOGIC CONTROL AUX CDTAPEFM / AM CD 3 CD 2 CD 1 COMPACT COMPONENT SYSTEM MX-K15R 1 BIT DUAL D/A CONVERTER PROGRAM SOUND MODE REPEAT PANDOM PRESET TUNING ST CANCEL PHONES REC START / STOP CD REC STARTDUBBING SET ANDBY/ONECO STANDBY / DEMO V O L U M E DISC SKIP R O C K I C L A S S C P O P CLOCK /TIMER TAPE A / B SELECTPTY / EONDISPLAY MODE FM MODEFM /AM AUX SLEEP STANDBY/ON CD1CD2CD3 SOUND SELECTPTY/EONMODE DISPLAY MODE ACTIVE BASS EX. FADE MUTING VOLUME PROGRAM /RANDOM REPEAT TAPE A/BTAPE CD BASS-REFLEXBASS-REFLEX CD-R/RW PLAYBACK 3-CD PLAY & EXCHANGE ACTIVE BASS EX. EJECTEJECT REC / PLAYBCD SYNCHRO RECORDINGPLAYAFULL - LOGIC CONTROL AUX CDTAPEFM / AM CD 3 CD 2 CD 1 COMPACT COMPONENT SYSTEM MX-K10R 1 BIT DUAL D/A CONVERTER PROGRAM SOUND MODE REPEAT PANDOM PRESET TUNING ST CANCEL PHONES REC START / STOP CD REC STARTDUBBING SET ANDBY/ONECO STANDBY / DEMO V O L U M E DISC SKIP R O C K I C L A S S C P O P CLOCK /TIMER TAPE A / B SELECTPTY / EONDISPLAY MODE FM MODEFM /AM AUX SLEEP STANDBY/ON CD1CD2CD3 SOUND SELECTPTY/EONMODE DISPLAY MODE ACTIVE BASS EX. FADE MUTING VOLUME PROGRAM /RANDOM REPEAT TAPE A/BTAPE CD SP-MXK10CA-MXK10RSP-MXK10SP-MXK15CA-MXK15RSP-MXK15 SP-MXK30CA-MXK30RSP-MXK30 MX-K30R MX-K10R E .Continental Europe EN .Northern Europe EV .E. Europe/Russia MX-K15R EV .E. Europe/Russia MX-K10R/K30R/K15R MX-K10R/K30R/K15R 2-2 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. (This regulation does not correspond to J and C version.) MX-K10R/K30R/K15R 2-1ABCDEFG 1 2 3 4 5 Standard schematic diagrams K10R/K15R Head AMP.audio, power AMP. and power supply section MX-K10R/K30R/K15R 2-2 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 POWER TRANSF ORMER SECTION K10R/15R MX-K10R/K30R/K15R 2-3ABCDEFG 1 2 3 4 5 Head AMP. audio, power AMP. and power supply K30R MX-K10R/K30R/K15R 2-4 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 POWER TRANSFORMER SECTION K30R MX-K10R/K30R/K15R 2-5ABCDEFG 1 2 3 4 5 FL display and CPU control section K10R/K30R/15R MX-K10R/K30R/K15R 2-6 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 CD servo control section K10R/K30R/15R MX-K10R/K30R/K15R 2-7ABCDEFG 1 2 3 4 5 TUNER SECTION K10R/K30R/K15R MX-K10R/K30R/K15R 2-8 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 8 Printed circuit boards main / power -Amp.circuit board ( Top side) MX-K1 MX-K10R/K30R/K15R 2-9ABCDEFG 1 2 3 4 5 Main/power-Amp. circuit board (Bottom side) K10R/K15R MX-K10R/K30R/K15R 2-10 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 Main/power-Amp. circuit board (Top side) K30R MX-K10R/K30R/K15R 2-11ABCDEFG 1 2 3 4 5 Main/power-Amp. circuit board (Bottom side) K30R MX-K10R/K30R/K15R 2-12 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 Tuner. circuit board (Top side) K30R/K10R/K15R MX-K10R/K30R/K15R 2-13ABCDEFG 1 2 3 4 5 CD Main. circuit board (Bottom side) K10R/K30R MX-K10R/K30R/K15R 2-14 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 CD Main. circuit board (Top side) K10R MX-K10R/K30R/K15R 2-15ABCDEFG 1 2 3 4 5 Display/Uicom control. circuit board (Top side) K10R/K30R MX-K10R/K30R/K15R 2-16 MX-K10R/K30R/K15R HABCDEFG 1 2 3 4 5 Display/Uicom control. circuit board (Bottom side) K10R/K30R MX-K10R/K30R/K15R 2-3 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMUNICATION BISINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,maebashi-city,371-8543,Japan 21138SCH 200212 MX-K10R/K30R/K15R 3-1 PARTS LIST * All printed circuit boards and its assemblies are not available as service parts. - Contents - Exploded view of general assembly and parts list CD changer mechanism assembly and parts list Cassette mechanism assembly and parts list Electrical parts list Packing materials and accessories parts list MX-K30R MX-K10R MX-K15R 3- 3 3- 9 3-10 3-11 3-44 Area suffix B - U.K. E - Continental Europe EN - Northern Europe EV - Eastern Europe MX-K30R Area suffix E - Continental Europe EN - Northern Europe EV - Eastern Europe MX-K10R Area suffix EV - Eastern Europe MX-K15R 3-2 6 5 4 3 2 1 BCDEFGHIJA 7 3-3 Exploded view ofgeneral assembly and parts list (K30R) Block No.M MM1 78 3-4 Parts List (Exploded view of general assembnly K30R) !ltemParts numberParts nameQtyDescriptionArea!ltemParts numberParts nameQtyDescriptionArea 1BI109808010101WINDOW CASS L1 40BI109836010201PANEL TOP1 2BI109809010101WINDOW CASS R1 41BI202303010201BRACKET-PWB-B1 3BI109806010201BOX CASS L1 1 42BI2110110080010PW TRANSFORMER1 4BI109807010201BOX CASS R 43PWB PT 1251152G02V(B) 5BI109819010201KNOB VOLUME1 44BI109837010401PANEL SIDE L1 6BI109823010101KEY BASS1 45PWB MAIN1 1 1 1 1 251152G02V(C) 7BI109805010201PANEL CD1 46BI109838010401PANEL SIDE R1 8BI109810030101WINDOW DISPLAY1 47PWB CONTROL1251099G02V(B) 9BI109830010101KEY POWER B1 48BI109824010201KEY SOUNCL MODE1 10BI109835010101LOGO JVC1 49PWB SOUND MODE1251099G02V(C) 11BI109834010101RING VOLUME1 50BI301773010101TAPE DOUBLE SIDE2 12BI109969010201SPACER 51BI202267010101HOLDER-VFD2 2 13BI301781010101MIRROR SHEET1 1 1 52PWB VFD1251099G02V(D) 14BI109804030201PANEL FRONT 53BI202264010101BRACKET,ADAPTOR 15BI301388010101GEAR WHEET DAMP2 2 2 2 2 54PWB TUNNER1251151G01V 16BI109840010101LOCKER 55BI202269010101HEATSINK 17BI202408010101SPRING LOCKER 56BI202304010101HLDR TUNNER 18BI109841010101HLDR LOCKER 57BI202263020101PANEL REAR 19BI202266010101SPRING CASS R1 58BI109839010101HEAT SINK COVER 20BI301789010101BUSHING1 59BI109818010101LES LED1 21BI202262010401BOTTOM PLATE1 4 1 60BIRM000604S3SCREW20RH/MS3X8mm 22BI103362020102FOOT RUBBER 61BIRM000601S3SCREW4RH/MS3X6mm 23BI202103010101HOLDER SENSER 62BIKT000627SCREW2KH/TS3X12mm 24G31K300K05S01KEY CD CHANGE ASSY1 63BIBT000418SCREW31BH/TS2.6X8mm 64BIPMW001101S3SCREW4PM