Jvc-KDS-5-M-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL CD RECEIVER No.49586 Jan. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. KD-S5M KD-S5M Area Suffix J Northerm America Contents Safety precaution 1-2 Preventing static electricity 1-3 Location of main parts 1-4 Disassembly method 1-5 Adjustment method 1-10 Flow of functional operati

2、on until TOC read 1-11 Maintenance of laser pickup 1-13 Replacement of laser pickup 1-13 Description of major ICs 1-14 COMPACT DIGITAL AUDIO RadioFans.CN 收音机爱 好者资料库 KD-S5M 1-2 !CAUTION Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs i

3、n the case of preforming repair of this system. Safety precaution !CAUTION Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. RadioFans.CN 收音机爱 好者资料库 KD-S5M 1-3 Front bracket CD mechanism control board Damper bracket CD mechanism assy FD s

4、crew Feed motor assy FD gearPickup unit Preventing static electricity 1.Grounding to prevent damage by static 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 pick

5、up). Take care to prevent this when performing repairs. 2.About the earth processing for the destruction prevention by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players. Be careful to use proper grounding in the area whe

6、re repairs are being performed. 2-1 Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. 2-2 Ground yourself Use an anti-static wrist strap to release any static electric

7、ity built up in your body. 3. Handling the optical pickup 1. In order to maintain quality during transport and before installation, 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

8、.) 2. Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. 4.Handling the traverse unit (optical pickup) 1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive,

9、complex unit. 2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific 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 attac

10、hing it to the connector. 3. Handle the flexible cable carefully as it may break when subjected to strong force. 4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it Conductive material (conductive sheet) or iron plate (caption) Anti-static wrist strap

11、 Soldering Attention when traverse unit is decomposed 1.Solder is put up before the card wire is removed from connector on the CD substrate as shown in Figure. (When the wire is removed without putting up solder, the CD pick-up assembly might destroy.) 2.Please remove solder after connecting the car

12、d wire with when you install picking up in the substrate. *Please refer to Disassembly method in the text for pick-up and how to detach the substrate. RadioFans.CN 收音机爱 好者资料库 KD-S5M 1-4 Main unit Location of main parts Control unit CD mechanism DisplayLED Digital: 0) RF signal Flow of functional ope

13、ration until TOC read When the pickup correctly moves to the inner area of the disc TERMINAL Microprocessor commands FMO TC9462 53 FEED MOTOR +TERMINAL IC581 5 REST SW When the disc correctly rotates Tracking Servo Loop ON Servo CLV Rough Servo AccelerationAccelerationAcceleration Microprocessor com

14、mands Spindle motor (-) IC581 7 0.5 Sec 0.5 Sec KD-S5M 1-12 Feed Section Focus Section Tracking Section Spindle Section Is the voltage output at IC521 pin 53 5V or 0V? Check the feed motor. Is 4V present at both sides of the feed motor? Is the wiring for IC521 (90) (100) correct? Check IC581. Is 6V

15、or 2V present at IC581 5 and 6? Is 5V present at IC581 pin 11? Check the feed motor connection wiring. Check the vicinity of IC521. Check CD 9V and 5V. YES YES YES NONO NO NO NO YES YES When the lens is moving: Check the circuits in the vicinity of IC581 pins 15 18. Check the pickup and its connecti

16、ons. NO YES YES YES Does the S-search waveform appear at IC581 pins 17 and 18? Is the disk rotated? Does the RF signal appear at TP1? Is 4V present at IC581 pins 7 and 8 ? Check the spindle motor and its wiring. Is 4V present at IC521 pin 55 ? Check the vicinity of IC581. Check IC501 and IC521. YES

17、NO NO NO NONO YES YES YES Check the circuits in the vicinity of IC501 19 24 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 pins 2 12. Check IC521. Check the pickup and its connections. Y

18、ESYES YES Is the tracking error signal output at IC501 12? Approx. 1.2 V 4V KD-S5M 1-13 Maintenance 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 cotton swab. (2) Life of the laser diode When the life of the laser dio

19、de has expired, the following symptoms will appear. (1) The level of RF output (EFM output:ampli tude of eye pattern) will be low. Replacement of laser pickup Is RF output 1.0 0.35Vp-p? Replace it. NO YES O.K (3) Semi-fixed resistor on the APC PC board The semi-fixed resistor on the APC printed circ

20、uit 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

21、, and the laser pickup should be replaced. If the semi-fixed resistor is adjusted while the pickup is functioning normally,the laser pickup may be damaged due to excessive current. Turn off the power switch and,disconnect the power cord from the ac outlet. Replace the pickup with a normal one.(Refer

22、 to Pickup Removal on the previous page) Plug the power cord in,and turn the power on. At this time,check that the laser emits for about 3seconds and the objective lens moves up and down. Note: Do not observe the laser beam directly. Play a disc. Check the eye-pattern at TP1. Finish. KD-S5M 1-14 3.P

23、in Functions 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 SDA GND OUTLR OUTLF TL B2L B1L IVL ILL QSL IDL MUTE ICL IMD IBL IAL SCL VCC OUTRR OUTRF TR B2R B1R IVR ILR QSR IDR Vref ICR CAP IBR IAR CD-CH TAPE TUNER POWER SUPPLY SOURCE SELECTOR VOLUME 1 +20 to -3

24、1 dB LOUDNESS LEFT BASS LEFT +15 dB TREBLE LEFT +12 dB BASS RIGHT +15 dB TREBLE RIGHT +12 dB MUTE FUNCTION ZERO CROSS DETECTOR VOLUME 2 0 to 55 dB BALANCE FENDER REAR VOLUME 2 0 to 55 dB BALANCE FENDER FRONT HC BUS REC VOLUME 2 0 to -55dB BALANCE FENDER FRONT VOLUME 2 0 to -55dB BALANCE FENDER REAR

25、VOLUME 1 +20 to -31 dB LOUDNESS RIGHT LOGIC 21 31 2 19 16 15 13 11 22 20 18 17 14 23252426 2728 30 29 1 32 3 4 108976512 1.Terminal Layout 2.Block Diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin No. Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 SDA GND OUTLR OUTLF TL B2L B1L IVL ILL QSL

26、 IDL MUTE ICL IMO IBL IAL Serial data input/output. Ground. output left rear. output left front. Treble control capacitor left channel or input from an external equalizer. Bass control capacitor leftchannel or output to an external equalizer. Bass control capacitor left channel. Input volume 1. left

27、 control part. Input loudness. left control part. Output source selector. left channel. Not used Not used Input C left source. Not used Input B left source. Input A left source. I/O - O O I - - I I O - - I - I I Symbol I/O Symbol I/O Input A right source. Input B right source. Electronic filtering f

28、or supply. Input C right source. Reference voltage (0.5Vcc) Not used Output source selector right channel. Input loudness right channel. Input volume 1. right control part. Bass control capacitor right channel Bass control capacitor right channel or output to an external equalizer. Treble control ca

29、pacitor right channel or input from an external equalizer. Output right front. Output right rear. Supply voltage. Serial clock input. I I - I - - O I I - O I O O - I IAR IBR CAP ICR Vref IDR QSR ILR IVR B1R B2R TR OUTRF OUTRR Vcc SCL FunctionsFunctions TEA6320T-X(IC301) : E.volume Descriprion of maj

30、or ICs KD-S5M 1-15 AN8806SB-W (IC501) : RF&Servo amp. PD LD LDON LDP VCC RF- RF OUT RF IN C.AGC ARF C.ENV C.EA CS BDO BDO CS BRT OFTR /NRFDET GND PDAC PDBD PDF PDE PDER PDFR TBAL FBAL EF- EF OUT TE- TE OUT CROSS TE BPF VDET LD OFF VREF ENV 302425262322143 33 32 34 31 36 35 13 14 15 16 20 2 21 629728

31、 27891017111219 ENV CURCUITRF DET AGC EQ BDO OFTR - + - + - + - +- + - + - + - + - + - + - + - + - + - + -+ - + - + - + VCBA VCBA VCBA VCBA - + 1.Pin layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 2.Block diagram KD-S5M 1-16 35 36 34 33 32 3

32、1 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 3. Pin function PD AC FBAL TBAL PDFR PDER PDF PDE PD BD TE BPF VDET CROSS TE OUT TE- FE OUT FE- /NRFDET GND LD OFF VREF ENV OFTR C.AGC ARF C.ENV C.EA CS BDO BDO CS BRT LD LD ON LDP VCC RF- RF OUT RF IN PD Pin No.Symbo

33、lI/O I O I - - I O I I/O O I/O I/O I/O O I/O O O - O O - O I O O I O I I I I/O I/O I I I II-V amp input I-V amp input I-V amp input I-V amp input E I-V amp gain control F I-V amp gain control Tracking balance control Focus balance control Inverse input pin for focus error amp Output pin of focus err

34、or Inverse input pin for tracking error amp Tracking error signal output Tracking error cross output Input pin of tracking error through BPF Vibration detection signal output Connect to ground Reference voltage output Description APC amp input terminal APC amp output terminal APC ON/OFF control term

35、inal Envelope output Ground RF detection signal output Of-track status signal output BDO output pin A capacitor is connected to this terminal to detect the envelope of RF signal RF output Connecting pin of AGC loop filter RF input RFamp output Inverse input pin for RF amp Power supply Connect to gro

36、und A capacitor is connected to this terminal to detect the envelope of RF signal A capacitor is connected to detect the lower envelope of RF signal A capacitor is connected to detect the lower envelope of RF signal KD-S5M 1-17 123456789101112 BA4905-V3 (IC901) : Regulator 1. Terminal layout 2. Bloc

37、k diagram EXT EXTACCAUDIO 9VCTRLILM 10VGND RESET RESETCOMPVDD 5.7VCD 8VVCCNC EXT ACCAUDIO 9VCTRLILM 10VGND RESETCOMP VDD 5.7V CD 8V VCCNC 1 2 3 4 5 6 7 8 9 10 11 12 37K REGULATOR Overvoltage protection circuit KD-S5M 1-18 Pin no. Symbol Function RESET EXT output COMP output ACC VDD output AUDIO outp

38、ut CD output CTRL VCC ILM output NC GND 1 2 3 4 5 6 7 8 9 10 11 12 If VDD voltage becomes 4V or less.RESET output becomes low level. This output voltage is approximately 0.5V lower than VCC. and max output current is 300mA. A voltage supply for ACC block. This output voltage is approximately 0.7V lo

39、wer than VDDS. The max output current is 100mA. Control of the COMP output by inputting voltage. This output voltage is 5.7V, and max output current is 100mA. This voltage supply is for microcomputer. Whenever back up voltage supply is connected, the output keeps on running. This output voltage is 9

40、.0v, and max output current is 500mA. This voltage supply for AUDIO. This output voltage is 8.0V, and max output current is 1A. This voltage supply for CD. Output selector of CD. AUDIO, ILM and EXT. To be connected with the BACK UP of car. This output voltage is 10V, and max output current is 500mA.

41、 Output voltage is adjustable. No use Ground 3.Pin function KD-S5M 1-19 HA13158A (IC321) : Power amp 1. Pin layout 2. Block diagram IN1 IN2 IN3 IN4 STBY 2 1 11 13 23 10 TAB PROTECTOR (ASO SURGE, TSD) INPUTBUFFER1 INPUTBUFFER2 INPUTBUFFER3 INPUTBUFFER4 AMP1 AMP2 AMP3 AMP4 MUTE PVCC1PVCC2 INVCC + - +

42、- + - + - 12 22 14 18 6 3 4 5 7 8 9 15 16 17 19 20 21 1 23 KD-S5M 1-20 JES01-9597 (IC801) : Main micon 1. Pin layout 2. Pin function 1 24 64 41 80 65 25 40 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 XIN TEST2 J BUS SI J BUS SO J BUS

43、 SCK J BUS I/O CONT SUBQ SQCK RESET LCD SI LCD SO LCDSCK LCD CE FM ILLUMI AM ILLUMI CD ILLUMI DIMMER OUT LM0 LM1 KS2 KS1 KS0 DETACH K2 K1 K0 Vdd SW2 CD LSI RESET MCLK MDATA MLD SCL SDA 4.5MHz crysral oscillation Connect to ground J-BUS signal data input ( to 74HC126 ) J-BUS signal data output ( to 7

44、4HC126 ) J-BUS output clock signal ( to 74HC126 ) J-BUS I/O control CD LSI subcode data input No use CD LSI subcode clock Micon reset pin No use LCD driver data output LCD driver clock signal LCD driver chip enable port No use No use No use No use CD loading motor output CD loading motor output No u

45、se No use No use No use No use Output for initial setting diode matrix Front panel detect No use Input for initial setting diode matrix Input for initial setting diode matrix 5V power supply CD mechanism switch 2 for 12cm disc CD LSI reset CD LSI command clock signal CD LSI command data output CD LS

46、I command load signal No use No use E.volume clock output E.volume data output 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 76 75 76 77 78 79 80 CD ON RELAY BBE CTL BEEP SW4 SW1 SW3 REST JOG0 JOG1 CD SENSE STATUS P .SAVE2 SD/ST REMOCON J BUS INT

47、BAND MONO IFRQ/AGC MUTE LEVEL S METER KEY CHANGE KEY2 KEY1 KEY0 P .SAVE1 SENSE FM IF COUNT Vdd AM OSC FM OSC Vss EO TEST1 XOUT CD 8V supply on 5V power control No use No use CD mechanism switch 1 for disc in, 8cm disc CD mecha. switch 3 for disc present, loading end CD pickup rest position Rotary en

48、coder input 0 Rotary encoder input 1 CD LSI sense signal CD LSI status signal Power save 2 : +B detect Station detection, Stereo indication Remocon input J-BUS interrrupt FM/AM band selection FM mono selection During FM auto search, IF request output H after SD detected. During AM suto search, AGC output. Muting switch Level meter input S meter input Connect to ground Key 2 data input (AD) Key 1 data input (AD) Key 0 data input (AD) Power save 1, ACC power detect Voltage sense No use FM IF co