Jvc-KDS-711-R-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL CD RECEIVER No.49603 Jun. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. KD-S713R / KD-S711R KD-S713R/KD-S711R Area Suffix EContinental Europe Difference piont KD-S713R KD-S711R LCD back light AMBER GREEN Control buttons AMBER GREEN SCM buttons GREEN RED Contents Safety preccaution

2、 Preventing static electricity Disassembly method Adjustment method Flow of functional operation until TOC read Maintenance of laser pickup Replacement of laser pickup Description of major ICs 1-2 1-3 1-4 1-9 1-10 1-11 1-11 1-1225 RadioFans.CN 收音机爱 好者资料库 KD-S713R/KD-S711R 1-2 ! Burrs formed during m

3、olding 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 in case of an adjustment or operation check. RadioFans.CN 收音机爱 好者资料库 KD

4、-S713R/KD-S711R 1-3 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 th

5、e 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 pick

6、up (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 (optica

7、l 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 sh

8、orted. 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 pic

9、kup) 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 a

10、nti-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

11、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

12、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 KD-S713R/KD-S711R 1-4 Disas

13、sembly method Removing the front chassis (See Fig.1) 1.Insert a screwdriver to the joints a on the side of the front chassis and two joints b on the right side, then detach the front chassis toward the front side. Removing the heat sink (See Fig.2) 1.Remove the three screws A attaching the heat sink

14、 on the left side of the body, and remove the heat sink. Removing the bottom cover (See Fig.3) 1. 2. Turn the body upside down. Insert a screwdriver to the two joints c and two joints d on the both sides of the body and the joint e on the back of the body, then detach the bottom cover from the body.

15、 ab ab Front chassis Fig. 1 Fig. 2 Fig. 3 A A c e d A KD-S713R/KD-S711R 1-5 Removing the main board (See Fig.4 and 5) 1. 2. 3. 4. 5. Remove the front chassis. Remove the bottom cover. Remove the two screws B attaching the main board on the bottom of the body. Remove the three screws C attaching the

16、main board on the back of the body. Disconnect the connector CN501 from the CD mechanism assembly. Removing the CD mechanism assembly (See Fig.6) 1. 2. 3. 4. Remove the front chassis. Remove the bottom cover. Remove the main board. Remove the three screws D attaching the CD mechanism assembly from t

17、he top cover. Removing the front board (See Fig.7 and 8) 1. 2. 3. Remove the front chassis. Remove the four screws E attaching the rear cover on the back of the front panel unit. Remove the front board from the front panel unit. Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 CN501Main board B C C D D D EE EE B

18、CD mechanism assembly Top cover KD-S713R/KD-S711R 1-6 Unsolder the part a and b 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 A attaching the CD mechanism co

19、ntrol board. Remove the CD mechanism control board in the direction of the arrow while releasing it from the two damper bracket slots d and the front bracket slot e. Disconnect the flexible wire from connector on the pickup unit. 1. 2. 3. 4. 5. Removing the CD mechanism control board (See Fig.1 and

20、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: Prior to performing the following procedure, remove the CD mechanism control board. Re

21、move the two springs f attaching the CD mechanism assembly and the front bracket. Remove the two screws B and the front bracket while pulling the flame outward. Remove the belt and the screw C from the loading motor. 1. 2. 3. Removing the loading motor (See Fig.3 to 5) Fig.2 Fig.3 Fig.4 Shift the lo

22、ck Flexible wire Pickup unit FD gear CD mechanism control board Loading motorFront bracket Front bracket Pull outward Pull outward Flame f B f B Fig.5 C Loading motor Belt Fig.1 Front bracket CD mechanism control board Damper bracket h c d b a DD D CD mechanism assembly A e h KD-S713R/KD-S711R 1-7 P

23、rior to performing the following procedure, remove the CD mechanism control board and the front bracket (loading motor). Remove the three screws D 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 g as shown in Fig.8

24、and 9. Remove the CD mechanism assembly and the two springs h attaching the flame. Remove the two screws E and both sides rear damper brackets from the dampers. Detach the CD mechanism assembly from the left side to the right side. 1. 2. 3. 4. Removing the CD mechanism assembly (See Fig.1, 6 to 9) T

25、he CD mechanism assembly can be removed if only the rear damper bracket on the left side is removed. ATTENTION: Fig.6 Fig.7 Fig.8 Fig.9 Rear damper bracket Fix arm (R) Damper DD Damper bracket CD mechanism assembly Flameh h D D Fig.1 Front bracket CD mechanism control board Damper bracket h c d b a

26、DD D CD mechanism assembly A e Fix plate (L) g g Rear damper bracket Fix arm (L) Damper E Fix plate(R) E g g h KD-S713R/KD-S711R 1-8 Prior to performing the following procedure, remove the CD mechanism control board, the front bracket (loading motor) and the CD mechanism assembly. Remove the two scr

27、ews F and the feed motor assembly. 1. Removing the feed motor assembly (See Fig.10) Prior to performing the following procedure, remove the CD mechanism control board, the front bracket (loading motor), the CD mechanism assembly and the feed motor assembly. Detach the FD gear part of the pickup unit

28、 upward. Then remove the pickup unit while pulling out the part i of the FD screw. 1. Remove the screw G 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 pickuap unit, reatta

29、ch the part j of the pickup unit, then the part i 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 assembly and the feed motor assembly. Turn up the CD mechanism assembly and remove the

30、 two springs k on both sides of the clamper arms. Open the clamper arm upward. Turn the turn table, and remove the two screws H 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 k k Pickup unit Part i FD screw Feed motor assembly FD

31、 gear Pickup unit Part j F Nut push spring plate Pickup mount nut Pickup unit FD screw G H H KD-S713R/KD-S711R 1-9 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. Electr

32、ic voltmeter 6. Digital tester 7. Tracking offset meter 8. Test Disc JVC :CTS-1000 9. Extension cable for check EXTGS004-26P 1 Standard measuring conditions Power supply voltage DC14.4V(10.516V) Load impedance 20Kohm(2 Speakers connection) Output Level Line out 2.0V (Vol. MAX) How to connect the ext

33、ension cable for adjusting Dummy load Exclusive dummy load should be used for AM,and FM. For FM dummy load,there is a loss of 6dB between SSG output and antenna input.The loss of 6dB need not be considered since direct reading of figures are applied in this working standard. Standard volume position

34、 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

35、 Servo AccelerationAccelerationAcceleration Microprocessor commands Spindle motor (-) IC581 7 0.5 Sec 0.5 Sec KD-S713R/KD-S711R 1-11 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 t

36、he 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 Th

37、e 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 speci

38、fied 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

39、. 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 th

40、e eye-pattern at TP1. Finish. KD-S713R/KD-S711R 1-12 UPD178078GF-540 (IC701) : System CPU 1.Pin layout 80 51 1 30 50 31 81 100 Pin NO. 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 41 42 43 44 45 - I I O O - I O O - O O O - O I I I I I

41、 I I I I I - I I - - - - - - I - I - - I - I - NC BUSINT BUSSI BUSSO JBUS-SCK NC I2CDAI I2CDAO I2CCLK NC LCDDA LCDSCK BUSI/O NC LCDCE SW2 SW3 SW4 RSTSW ENC1 ENC2 KEY0 KEY1 KEY2 LEVEL AVDD SM SQ NC AVSS REGCPU VDD REGOSC X2 X1 GND0 SD/ST GND2 NC IFC VDDPLL OSC NC I/OSymbolFUNCTION Non connection JVC

42、bus communication line JVC bus communication line JVC bus communication line JVC bus communication line Non connection Serial data input Serial data output Serial clock output Non connection LCD driver serial data output LCD driver serial clock output JVC bus output select Non connection LCD driver

43、communication line CD mech switch CD mech switch CD mech switch Traverse mech rest switch Encoder input Encoder input Key input Key input Key input Audio level input Power supply Signal level meter input Signal quality input Non connection Connect to GND Connect to GND with capacitor Power supply Co

44、nnect to GND with capacitor System clock System clock Connect to GND Station detector & Stereo indicator Connect to GND Non connection IF count input - FM,AM osc input Non connection 2.Pin function (1/2) Description of major ICs KD-S713R/KD-S711R 1-13 Pin NO. 46 47 48 49 50 51 52 53 54 55 56 57 58 5

45、9 60 6168 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 8998 99 100 - O O - I I I - O O O O - - - - O O O O I/O I/O I/O I/O O I I I I - O O O O I - - - - GNDPLL AMEQ FMEQ IC(VPP) RESET SW1 REMOCON NC TEL_MUTE POWER CDON MUTE STAGE 1 BUZZER STAGE 2 NC LM0 LM1 BUCK CCE BUS0 BUS1 BUS2 BUS

46、3 RST PS1 PS2 DETACH RDSSCK GND1 MONO SEEK/STOP FM/AM AFCK RDSDATA PLLMONITOR NC VDDPORT GNDPORT I/OSymbolFUNCTION - PLL error output for AM PLL error output for FM Setting to write for flash System reset CD mech switch Remocon input Non connection TEL mute output Power control CD power control Mute

47、 control - Non connection - Non connection CD mech driver control CD mech driver control CD LSI communication line CD LSI communication line CD LSI communication line CD LSI communication line CD LSI communication line CD LSI communication line CD LSI communication line ACC detection input Memory de

48、tection Detach detection Clock input for RDS Connect to GND Mono by force Switching SEEK & STOP Band switch AFcheck output RDS data input Non connection Non connection Vdd Connect to GND 2.Pin function (2/2) KD-S713R/KD-S711R 1-14 123456789101112 BA4905-V3 (IC961) : Regulator 1.Terminal layout 2.Block diagram EXT EXTACCAUDIO 9VCTRLILM 10VGND RESET RESETCOMPVDD 5.7VCD 8VVCCAJ 1 2 3 4 5 6 7 8 9 10 11 12 37K 5K REGULATOR OIVPC KD-S713R/KD-S711R 1-15 BA4905-V3 If VDD voltage becomes 4V or less, RESET output becomes low level. This outout voltage is approximately 0.5V lower than VCC, and max o