Jvc-KVDV-7-Service-Manual(1) 电路图 维修手册.pdf

《Jvc-KVDV-7-Service-Manual(1) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Jvc-KVDV-7-Service-Manual(1) 电路图 维修手册.pdf（37页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL DVD/CD PLAYER No.49630 Apr. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. KV-DV7 KV-DV7 Area Suffix E J UF UT US A Continental Europe Northern America China Taiwan Singapore Australia Contents Safety precaution Important for laser products Disassembly method Adjustment method Desc

2、ription of major ICs 1-2 1-3 1-4 1-11 1-1217 RadioFans.CN 收音机爱 好者资料库 KV-DV7 1-2 ! 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 se

3、e 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 KV-DV7 1-3 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

4、no serviceable parts inside the Laser 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

5、 safety interlocks have failed or are 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 r

6、adiation exposure. VARNING : Osynlig laserstrlning 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 fun

7、ktion. Undg udsttelse for strling. ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling. REPRODUCTION AND POSITION OF LABELS WARNING LABEL !CAUTION Please use enough caution not to see the beam directly or touch it in case of an adjustment or operat

8、ion check. CLASS 1 LASER PRODUCT DANGER : Invisibie laser radiation when open and interlock or defeated. AVOID DIRECT EXPOSURE TO BEAM (e) VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina

9、nkymttmlle lasersteilylle.l katso steeseen. (d) ADVARSEL :Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. (f) RadioFans.CN 收音机爱 好者资料库 KV-DV7 1-4 Remove the seven screws A on both sides and back of the body. Detach the rear part of the top cover

10、 upward and release the joint a on the top side. 1. 2. Disassembly method Removing the top cover (See Fig.1 to 3) Fig.1 Fig.2 Fig.3 Top cover AA AA Top cover Top cover Joint a A A A A KV-DV7 1-5 Prior to performing the following procedure, remove the top cover. Remove the screw B attaching the groun

11、d on the top of the body. Remove the four screws C and two screws C attaching the front panel assembly on both sides of the body. Release the two joints b of the front panel assembly and the bottom chassis on both sides of the body and remove the front panel assembly toward the front. The connector

12、CN801 on the control switch board in the front panel assembly will be disconnected from the main board. 1. 2. 3. Removing the front panel assembly (See Fig.4 to 6) When reassembling, attach the four screws C and then the two screws C. CAUTION: Fig.4 Fig.5 Fig.6 Front panel assembly B Front panel ass

13、embly C C C C Joint b Joint b C Front panel assembly C KV-DV7 1-6 Prior to performing the following procedure, remove the top cover and the front panel assembly. Remove the four screws D attaching the DVD mechanism assembly on the top of the body. Remove the DVD mechanism assembly while holding the

14、part c on each side of the assembly. 1. 2. Disconnect the card wire from connector CN721 and CN701 on the main board andremove the DVD mechanism assembly from the body. Remove the two screws E attaching the DVD mechanism bracket (1) on the front sideof the DVD mechanism assembly. Remove the two scre

15、ws F attaching the DVD mechanism bracket (2) on the rear sideof the DVD mechanism assembly. 3. 4. 5. Removing the DVD mechanism assembly (See Fig.7 to 11) To protect accuracy of the mechanism bracket on the front of DVD mechanism assembly, make sure to hold the part c on each side of the DVD mechani

16、sm assembly when removing or reassembling. CAUTION: When reassembling the DVD mechanism assembly, attach the cooling rubber and the heat sink to the DVD mechanism board as shown in Fig.11 to make sure radiation of IC15 on the DVD mechanism board (Fig.11). CAUTION: Fig.7 Fig.8 Fig.9 Fig.10Fig.11 DD D

17、 D Joint c Joint c DVD mechanism assembly DVD mechanism assemblyCN721CN701 Main board DVD mechanism assembly DVD mechanism bracket (1) E DVD mechanism bracket (2) E DVD mechanism assembly F F DVD mechanism board Heat sink Cooling rubber IC15 Do not hold the mechanism bracket. KV-DV7 1-7 Prior to per

18、forming the following procedure, remove the top cover, the front panel assembly and the DVD mechanism assembly. Disconnect the wire from connector CN781 on the main board. Remove the three screws G on the top of the body. Remove the screw H on the back of the body. Disengage the joint d in the lower

19、 right part of the rear panel and remove the rear panel with the main board (The fan assembly will be detached with the rear panel). 1. 2. 3. 4. Remove the two screws I and J attaching the main board to the rear panel. 5. Removing the main board (See Fig.12 to 15) When reattaching, engage the joint

20、c to place the rear panel on the back of the bottom chassis. CAUTION: Fig.12 Fig.13 Fig.14 Fig.15 Rear panel Main board CN781 Bottom chassis G H Rear panel Rear panel Joints d Main board Rear panel IJ KV-DV7 1-8 Prior to performing the following procedure, remove the top cover, the front panel assem

21、bly and the DVD mechanism assembly. Disconnect the wire from connector CN781 on the main board. Remove the two screws K on the back of the body. 1. 2. Removing the fan assembly (See Fig.16 and 17) It is not unnecessary to remove the main board and the rear panel. REFERENCE: Prior to performing the f

22、ollowing procedure, remove the top cover and the front panel assembly. Remove the three screws L attaching the control switch board on the back of the front panel assembly. Disengage the three joints e of the front panel and the control switch board. 1. 2. Removing the control switch board (See Fig.

23、18) Fig.16 Fig.17 Fig.18 Fan assembly Rear panel CN781 K Rear panel Fan assembly Joint d Joint e Joint e LLL Control switch board Front panel assembly KV-DV7 1-9 Prior to performing the following procedure, remove the front panel assembly and the control switch board. Remove each button on the back

24、of the front panel. Press the OPEN button on the front side of the front panel to open the DVD door. Remove the six screws M attaching the DVD door flame on the back of the front panel. Disengage the three joints f on the top of the DVD door flame using a screwdriver (-) to pull out the three bosses

25、 of the front panel. Peel off the two adhesive tapes at the same time. Detach the bottom of the DVD door flame. Press the lock lever on the front side of the front panel and remove the DVD door flame from the gear. When reassembling, reattach the DVD door flame to the front panel with the two adhesi

26、ve tapes while engaging the three joints f. CAUTION: 1. 2. 3. 4. 5. Replacing the DVD door flame (See Fig.19 to 24) Fig.19 Fig.20 Fig.21 Fig.22 Fig.23Fig.24 DVD door flame Eject button Reset button Control button MMPower button M M Front panel OPEN button DVD door Joint f Joint f Joint f DVD door fl

27、ame Adhesive tapes DVD door flame Lock lever DVD door Front panel Bosses DVD door flame Adhesive tapes Detach the lock lever from the front side, then from the gear. DVD door flame (remove from bottom) Insert a screwdriver. KV-DV7 1-10 Prior to performing the following procedure, remove the front pa

28、nel assembly, the control switch board and the DVD door flame. Remove the screw N attaching the gear assembly on the back of the front panel. Pull out the DVD door shaft from the joint g of the DVD door and the front panel. Remove the DVD door with the gear assembly. Remove the spring through the no

29、tch h of the gear assembly bracket and remove the DVD door from the gear assembly. Do not lose the spring.CAUTION: Reattaching the DVD door, reattach the spring through the notch h and hole i of the gear assembly bracket, then reassemble the DVD door and the gear assembly. Reattach them to the front

30、 panel. CAUTION: 1. 2. 3. 4. Removing the DVD door (See Fig.25 to 29) Fig.25 Fig.26 Fig.27 Fig.28Fig.29 N Gear assembly DVD door Joint g Gear assembly DVD door (Shaft) M DVD door Gear assembly Notch h Spring Bracket Bracket Spring DVD door Shaft DVD door Hole i KV-DV7 1-11 Adjustment method This mod

31、el dose not have adjustment. If you change printed circuit board or mechanism assembly, please check as folow as next. Test instruments required for checking Checking items (1) Digital oscilloscope (100MHz) (2) AM standard signal generator (3) FM standard signal generator (4) Stereo modulator (5) El

32、ectric voltmeter (6) Digital tester (7) Monitor (8) Test disc: VT-501 for DVD section : CTS-1000 for CD section (1) DVD section: Playback the test disc VT-501. It should not have some noise on the audio signal or video signal. (2) CD section: Playbcak the test disc CTS-1000. It should not heve some

33、noise on the audio signal. KV-DV7 1-12 UPD780058GC-250 (IC701) : Micon 1. Pin layput 2. Pin function (1/2) 1 20 60 41 61 80 40 21 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 I/O I I I - O - I O O I O I - O I O I O O O O O O O

34、 O I O O O O - - - - - O - - - Function Templature sensor Non connect Non connect Audio ground LCD control DIgital out mute Anarog reference voltage Communication for JIG LCD or PC Communication for JIG LCD or PC Communication for JIG LCD or PC J-BUS serial input J-BUS serial output J-BUS serial clo

35、ck input Power supply for J-BUS control Communication for DVD mechanism Communication for DVD mechanism Communication for DVD mechanism Communication for DVD mechanism Communication for DVD mechanism Communication for DVD mechanism NTSC/PAL control (H:PAL L:NTSC) E. volume serial clock output E. vol

36、ume data output E. volume strobe output Video mute output Audio mute output Audio mute input LED output for slot LED output for Real sonic or Remocon LED output for CD/DVD LED output for DVD Non connect Ground1 Non connect Non connect Non connect Fan control Non connect Non connect LCD chip select S

37、ymbol TEMP - - AVSS LCDCONT D_OUT_MUTE AVREF1 LCDDI/RXDO LCDDO/TXDO LCDCL/ASCK JBUS_SI JBUS_SO JBUS_SCK JBUS_CTRL+B ANT_FM D_HOST D_FM SCK RDY_FM /HOST_RST NTSC/PAL E.VOL_SCK E.VOL_DO E.VOL_STB V_MUTE A_MUTE D_MUTE LED_DISCIN LED_DSP LED_CD/DVD LED_DVD EEPROM_DO VSS1 EEPROM_DI EEPROM_CLK EEPROM_CONT

38、 FANCONT - - LCDCE Description of major ICs KV-DV7 1-13 2. Pin function (2/2) Pin No. 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 74 75 76 77 78 79 80 I/O - I/O I I I I I I I I O O O O O I - I O I I I I I I - O O I I I I I Function Non connect J

39、-BUS I/O S1 control Side brake detection Headphone detection Remocon code select Side brake select Side brake select Communication select Address select on J-BUS NTSC/PAL select Power supply control Mechanism power supply +7V control Mechanism power supply +5V control Power supply control od LED & R

40、emocon Play remote output LINE IN control Non connect Reset J-BUS initialize Battery detection ACC detection DVD mechanism communication Remocon input KEY_INT Setting to input for common use Power supply1 Connect to Xtal Connect to Xtal Non connect Power supply Power supply 0 Referencew voltage Key

41、input 0 Key input 1 Key input 2 Key input 3 Key input 4 Symbol LCDRST JBUS_I/O S1_CONT SIDE_BRAKE HEADPHONE REMOCON_SEL SB_SEL_V SB_SEL_OP LCD/PC_SEL ADDRESS_SEL NTSC/PAL_SEL VSYNC POWER_CONT +7V_CONT +5V_CONT LED_CONT PLAY_REMOTE LINE_IN CD_DET RESET J-INT P.SAVE2(BATT) P.SAVE1(ACC) FM_INT REMOCON

42、KEY_INT VSS0 VDD1 X2 X1 IC XT2 XT1 VDD0 AVREF0 ANI0 ANI1 ANI2 ANI3 ANI4 KV-DV7 1-14 BA4901A-V3 (IC911) : Regulator VCC-C VCC-B ACC5V ACC.IN VDD5V 9V CDBV CTRL MEMORY.IN 10V AJ GND 1 2 3 4 5 6 7 8 9 10 11 12 VCC-C VCC-B ACC5V ACC.IN VDD5V 9V CDBV CTRL MEMORY.IN 10V AJ GND Pin No.SymbolDescriptions 1

43、2 3 4 5 6 7 8 9 10 11 12 To be connected with the collector of PNP. To be connected with the base of PNP. A voltage supply for ACC block. Control of the COMP output by inputting voltage. Output voltage level is 5.7V, and max output current is 100mA. This voltage supply is for microcomputer. Whenever

44、 backup voltage supply is connected, the output keeps on running. This output voltage is 9.0V, 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 Vcc-B. To be conn

45、ected with the BACKUP of car This output voltage is 10V, and max output current is 500mA. Output voltage is adjustable. Putting a resistance between ILM and AJ or between AJ and GND males ILM output voltage adjustable. Connect to GND 1. Pin layout 2.Pin Function LM2596S-ADJ-W (IC951) : Regulator 15

46、CURRENT SOURCE BIAS 1.235V REFERENCE 2.5V REGULATOR START UP ON/OFF 2.5V GM AMP R2 R1=2.5k ACTIVE CAPACITOR COMP. FREQ.SHIFT RESET LATCH 150kHz OSC. OP AMP FEEDBACK 220mV 200mV 3A SWITCH COMP. COMP. CURRENT LIMIT DRIVER THERMAL LIMIT VIN OUTPUT GND 3.3V, R2 = 4.2k 5V, R2 = 7.5k 12V, R2 = 21.8k ADJ,

47、R2 = 0 R1 = OPEN 1. Pin layout2. Block diagram KV-DV7 1-15 IC-PST9333U-X (IC741) : Regulator NC 1 GND 2 4 Vcc 3 VOUT Vcc 4 NC 1 3 VOUT 2 GND Pin No. 1 2 3 4 Symbol NC GND VOUT Vcc Function Non connect GND terminal Reset signal output terminal Vcc terminal/Voltage detect terminal 1. Pin layout 3. Pin

48、 function 2. Block diagram NJM2267X-X (IC301) : Video amp. 20k 2.2k 20k 2.2k CLAMPCLAMP 750 750 75 DRIVER 6.2dB Amp 75 DRIVER 6.2dB Amp VOUT2 VSAG2 SAG TERMINAL VOUT1 VSAG1 SAG TERMINAL GND V+ VIN 2 VIN 1 7 5 6 4 3 2 1 8 1 2 3 4 8 7 6 5 VIN1 GND VSAG1 VOUT1 VIN2 V+ VSAG2 VOUT2 1. Pin layout2. Block

49、diagram KV-DV7 1-16 NJM4580V-X (IC101,IC151) : Ope amp. A B 1 2 3 4 8 7 6 5 A OUTPUT A-INPUT A+INPUT V- V+ B OUTPUT B-INPUT B+INPUT 1. Pin layout & Block diagram PQ05RD21 (IC961) : Regulator Vin 12 Vo 4 Vc 3 GND IC 1. Block diagram RPM6938-V4 (IC801) : Remocon reseiver I/V conversion AMP PD magnetic shield BPFDetector for trimming circuit AGC Vcc Comp 22k Vcc ROUT GND 1. Block diagram TA78L05F-X (IC971