Jvc-KDS-9-Service-Manual(1) 电路图 维修手册.pdf

SERVICE MANUAL CD RECEIVER No.49579 Dec. 2000 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD. KD-S9R KD-S9R Contents Safety precaution Preventing static electricity Disassembly method Adjustment method Flow of functional operation unit TOC read Maintenance of laser pickup Description of major ICs 1-2 1-3 1-4 1-9 1-10 1-11 1-12 This service manual is printed on 100% recycled paper. 45Wx4 TP DISP RPT SSM SCM MO RND 789101112 PTY AM FMCD /I ATT / RDS Area Suffix EContinental Europe RadioFans.CN 收音机爱 好者资料库 1-2 KD-S9R !CAUTION 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 !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 1-3 KD-S9R Front bracket CD mechanism control board Damper bracket CD mechanism assy FD screw 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 pickup). 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 where 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 electricity 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.) 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, 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 attaching 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 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 card 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 1-4 KD-S9R Disassembly method Removing the front panel unit (See Fig. 1, 2) 1.Press the Eject button to open the front panel unit 2.Push and open the right and left open/close shaft arms outward to remove the shaft. 3.Remove the front panel unit from the same side as the shaft was removed. 1.Remove the front panel unit. 2.Remove the two screws A attaching the front chassis assembly. 3.Remove the four ribs a attaching the front chassis assembly to the chassis. Removing the front chassis assembly (See Fig. 3, 4) Removing the bottom cover assembly (See Fig. 5) Turn the unit upside down,then insert and turn to b the screwdriver to remove the bottom cover. Fig 5 Fig 1 Eject button Front panel unit Fig 2 Open/close shaft arm Fig 3 A Fig 4 a b b b a 1-5 KD-S9R 1.Remove three screws E retaining the rear panel to the chassis 2.Remove one screw C retaining the IC to the heat sink. 3.Remove two screws D retaining the main board. 4.Lift up the main board to remove it. 5.Remove two screws B to remove the heat sink. Fig 9 Fig 8 J J J B B C Fig 6 K K E G Fig 7-1 Fig 7-2 E EI F DD Removing the main board(wiht rear panel) (See Fig. 6, Fig. 7) Remove five screws K retaining the rear cover. Front panel unit (See Fig.9) Remove three mechanism mounting screws J retaining the top cover. CD mechanism assembly (See Fig. 8) 1.Remove one screw I to remove the IC bracket. 2.Remove one screw F to remove the line-out jack. 3.Remove one screw G to remove the antenna jack. Removing the rear bracket (See Fig. 7) 1-6 KD-S9R Unsolder the part f and g on the CD mechanism control board. Remove the stator fixing the CD mechanism control board and the damper bracket (To remove the stator smoothly, pick up the center part). Remove the screw F attaching the CD mechanism control board. Remove the CD mechanism control board in the direction of the arrow while releasing it from the two damper bracket slots i and the front bracket slot j. Disconnect the flexible wire from connector on the pickup unit. Removing the CD mechanism control board (See Fig.1 and 2) Turn the FD gear in the direction of the arrow to move the entire pickup unit to the appropriate position where the flexible wire of the CD mechanism unit can be disconnected easily (Refer to Fig.2). ATTENTION: Fig.1 Fig.2 Fig.3 Fig.4 Front bracket CD mechanism control board Shift the lock Flexible wire Pickup unit FD gear CD mechanism control board Loading motor Front bracket Front bracket Pull outward Pull outward Flame Damper bracket m m h i g f II I CD mechanism assy F j k G k G 1-7 KD-S9R Prior to performing the following procedure, remove the CD mechanism control board. Remove the two springs k attaching the CD mechanism assy and the front bracket. Remove the two screws G and the front bracket while pulling the flame outward. Remove the belt and the screw H from the loading motor. * 1. 2. 3. Removing the loading motor (See Fig.3 to 5) Prior to performing the following procedure, remove the CD mechanism control PWB and the front bracket (loading motor). Remove the three screws I and the damper bracket. Raise the both sides fix arms and move the fix plates in the direction of the arrow to place the four shafts l as shown in Fig.8 and 9. Remove the CD mechanism assy and the two springs m attaching the flame. Remove the two screws J and both sides rear damper brackets from the dampers. Detach the CD mechanism assy from the left side to the right side. * 1. 2. 3. 4. Removing the CD mechanism assy (See Fig.1, 6 to 9) The CD mechanism assy can be removed if only the rear damper bracket on the left side is removed. ATTENTION: Fig.5 Fig.6 Fig.7 Fig.8 Fig.9 Rear damper bracket Fix arm (R) Damper H II Loading motor Belt Damper bracket CD mechanism assy Flame m m I I Fix plate (L) l l Rear damper bracket Fix arm (L) Damper J Fix plate(R) J l l 1-8 KD-S9R Prior to performing the following procedure, remove the CD mechanism control board, the front bracket (loading motor) and the CD mechanism assy. Remove the two screws K and the feed motor assy. * 1. Removing the feed motor assy (See Fig.10) *Prior to performing the following procedure, remove the CD mechanism control board, the front bracket (loading motor), the CD mechanism assy and the feed motor assy. Detach the FD gear part of the pickup unit upward. Then remove the pickup unit while pulling out the part n of the FD screw. * 1. Remove the screw L attaching the nut push spring plate and the pickup mount nut from the pickup unit. Pull out the FD screw. 2. Removing the pickup unit (See Fig.10 and 11) When reattaching the pickup unit, reattach the part o of the pickup unit, then the part n of the FD screw. ATTENTION: Prior to performing the following procedure, remove the CD mechanism control board, the front bracket (loading motor), the CD mechanism assy and the feed motor assy. Turn up the CD mechanism assy and remove the two springs p on both sides of the clamper arms. Open the clamper arm upward. Turn the turn table, and remove the two screws M and the spindle motor. * 1. 2. Removing the spindle motor (See Fig.12 and 13) Fig.10 Fig.11 Fig.12 Fig.13 Spindle motor pp Pickup unit Part n FD screw Feed motor assy FD gearPickup unit Part O K Nut push spring plate Pickup mount nut Pickup unit FD screw L M M 1-9 KD-S9R Adjustment method Test instruments required for adjustment 1.Digital oscilloscope(100MHz) 2.AM Standard signal generator 3.FM Standard signal generator 4.Stereo modulator 5.Electric voltmeter 6.Digital tester 7.Tracking offset meter 8.Test Disc JVC:CTS-1000 9.Extension cable for check EXTGS004-26P x 1 Standard measuring conditions Power supply voltage DC14.4V(10.5 16V) Load impedance 20Kohm(2 Speakers connection) Output Level Line out 2.0V (Vol.MAX) How to connect the extension cable for adjusting Standard volume position Balance and Bass Digital: 0) RF signal Flow of functional operation 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 commands Spindle motor (-) IC581 7 0.5 Sec 0.5 Sec 1-11 KD-S9R 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 diode 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 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 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 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. 1-12 KD-S9R 18 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2532 33 34,35 36 37,38 39 40 41 42 43 44 45,46 47 48 49 50 51,52 53 5463 64,65 66 67 68 69,70 71 72 7380 81 82 83 84 85 86 87 88 89 9093 94 95100 VDD X2 X1 VSS XT2 XT1 RESET AUTODATA LOCK DIGITAL0 FORMAT CHANNEL ERR RSTDET AVDD AVREF0 AVSS RX,TX DSPCOM DSPSTS DSPCLK DSPRDY MIDIO_IN/OUT MICK MICS MILP MIACK DSPRST CDTI/CDTO CCLK CS XTS PD GND VDD 3D-ON 3D-ON ANA/T-TONE REF-MIX D.MUTE S.MUTE ASW14 TEST - - O I - - - I I I I I I I I - - - - - - - - I O I I - I/O O O O O - O - I/O O O O - O - - - - O O O - O O - O - - Unused terminal Power supply terminal Crystal oscillation terminal 6.14MHz (main clock) Crystal oscillation terminal 6.14MHz (main clock) Connects to ground Unused terminal Unused terminal Reset signal input DSP general-purpose port output interrupt DSP general-purpose port output interrupt DSP general-purpose port output interrupt DSP general-purpose port output interrupt DSP general-purpose port output interrupt DSP general-purpose port output interrupt DSP general-purpose port output interrupt Power supply terminal Connects to ground Connects to ground Connects to ground Unused terminal Power supply terminal Unused terminal Unused terminal Communication port with IC401 Status communication port to IC401 Clock input from IC401 Ready signal input from IC401 Unused terminal DSP-microcomputer I/F Clock signal to IC631 Chip selection to IC631 DSP-microcomputer I/F DSP-microcomputer I/F Unused terminal Output of reset signal of DSP Unused terminal CODEC-microcomputer I/F Clock signal to IC601 Chip selection to IC601 OSC selection Unused terminal Reset signal output Connects to ground Unused terminal Power supply terminal Unused terminal Switches at the output destination of the surround channel Test tone control Control at output destination of LFE channel Unused terminal MUTE of digital out terminal Audio signal MUTE Unused terminal Digital input selection Test terminal Unused terminal Pin No.SymbolI/OFunction 75 51 1 25 76 100 50 26 UPD784215AGC126(IC701):DSP controller 1.Terminal layout 2.Pin function Descrption of major ICs 1-13 KD-S9R 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 -31 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 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.Pin layout 3.Pin functions 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 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 left channel or output to an external equalizer. Bass control capacitor left channel. Input volume 1. left 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 for supply. Input C right source. Reference voltage (0.5Vcc) Not used Output sourc