Nakamichi-DVD15-dvd-sm 电路图 维修手册.pdf

《Nakamichi-DVD15-dvd-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Nakamichi-DVD15-dvd-sm 电路图 维修手册.pdf（62页珍藏版）》请在收音机爱好者资料库上搜索。

1、1 DVD-15 5 Disc MusicBank DVD Changer Service Manual R CONTENTS 1. GENERAL . 2 2. REMOVAL PROCEDURES. 4 3. ELECTRICAL ADJUSTMENT . 9 3-1 Measurement instruments and jigs . 9 3-2 Parts location for adjustment. 9 3-3 Adjustment Procedure. 10 3-4 RAM Clear. 11 4. MECHANICAL ASSY AND PARTS LIST . 12 4-1

2、 Synthesis Assy . 12 4-2 Mechanism Assy DVD-15 (A01) . 14 4-3 Motor Chassis EX Assy (B01) . 16 4-4 Loading EX Assy ADJ-3 (B02) . 17 4-5 DVD Traverse Assy ADJ-3 (B03) . 19 4-6 Pakage Assy and Accessory Assy . 20 5. ELECTRICAL PARTS LIST . 21 6. RECOMMENDED SPARE PARTS LIST . 26 7. IC BLOCK DIAGRAMS.

3、27 8. SPECIFICATIONS. 49 For Schematic Diagrams, and Mounting Diagrams, see the separate volume. RadioFans.CN 收音机爱 好者资料库 2 1. GENERAL 1.1 Product Code V685 1.2 Destinations BS, CAN, CH, DA, EP, HK, JPN, OTR, TW, USA, KR, AUS Abbreviations CAN - CanadaCH - China DA - South AmericaEP - Europe HK - Hon

4、g KongJPN - Japan OTR - OtherTW - Taiwan U.K. - United KingdomUSA - U.S.A. KR - KoreaAUS - Australia 1.3 Cautions / Warnings (1) Product Safety Notice Parts marked with the symbol in the schematic dia- gram have critical characteristics. Use ONLY replacement parts recommended by the manufacturer. It

5、 is recommended that the unit be oper- ated from a suitable DC supply or batteries during initial check-out procedures. (2) Leakage Current Check / Resistance Check Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance ch

6、eck. If the leakage current ex- ceeds 0.5 milliamp, or if the resistance from chassis to either side of the power cord is less than 240 k ohms, the unit is defective. WARNINGDO NOT return the unit to the customer until the problem is located and corrected. (3) Protection of Eyes from Laser Beam To p

7、rotect eyes from invisible laser beam during servic- ing, DO NOT LOOK AT THE LASER BEAM on the Changer. (4) Laser Caution CAUTION Adjusting the knobs, switches, and controls etc. or tak- ing actions not specified herein may result in a harmful emission of laser beams. This Changer must be adjusted a

8、nd repaired only by qualified service personnel. OBSERVERA! Sdana instllningar av rattarna, omkopplarna eller vriga kontrollknappar som inte r beskriva i bruksanvisningen kan resultera i farlig laserutstrlning. Justering eller reparation av denna kompaktskivspelare skall endast utfras av kvalificera

9、d servicepersonal. OBS! Indstilling af knapper, cmskiftere og vrige kontrolknapper, som ikke flger den i brugsanvisningen beskrevne mde, kan resultere i farlig laserudstrling. Justering eller reparation af denno CD-afspiller m kun udfres af kvalificeret servicepersonale. OBS! Justering av ratt, bryt

10、ere og kontroller andre enn de som er beskrevet her, kan resultere i farlig laserbestrling. Justering eller reparasjon av denne kompaktdiskspilleren ma bare utfres av kvalifiserte fagfolk. HUOMAUTUS Jos nuppeja, kyikimi ja stimi ym, sdetn tai laitetta kytetn toisella tavalla kuin on selostettu, tulo

11、ksena saattaa olla vaarallista lasersteiden vuotoa. CD-soittimen st ja korjaus on jtettv aina asiantuntevan huoltoteknikon tehtvksi CLASS 1 LASER PRODUCT KLASSE 1 LASER PRODUKT LUOKAN 1 LASER LAITE KLASS 1 LASER APPARAT CAUTION ;INVISIBLE LASER RADIATION WHEN OPEN VARNING ;OSYNLIG LASERSTRALNING NAR

12、 DENNA AND INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM. DEL AR OPPNAD OCH SPARREN AR URKOPPLAD. ADVARSEL ;USYNLIG LASERSTRALING VED ABNING, VARO ;AVATTAESSA JA SUOJALUKITUS OHITETTAESSA NAR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION ALA KATSO SATEESEEN ! BETRAKTA EJ STRALEN ! UNDGA UDSTTELSE FOR STRALIN

13、G. OLET ALTTIINA NAKYMATTOMALLE LASERSATEILYLLE. THIS DVD PLAYER IS CLASSIFIED AS A CLASS 1 LASER PRODUCT. THE CLASS 1 LASER PRODUCT LABEL IS LO- CATED ON THE REAR EXTERIOR. RadioFans.CN 收音机爱 好者资料库 3 How to prevent or discharge the impressed elec- tricity Please refer to the following items. 1) Grou

14、nding When you repair a laser pickup, first ground the human body, as well as the measuring instruments and other tools (with particular caution to the soldering iron). Whats more, your workbench and floor should desirably be grounded using a conductive sheet or copper plate. Be careful so as not to

15、 let your clothes touch the laser pickup, as static electricity on the clothes may be released even if your body is grounded. 2) Discharge of electricity Be sure to discharge electricity from objects brought into contact with the laser pickup (i.e., soldering iron, twee- zers, probes, volt-ohm-meter

16、 probes, etc.) before start- ing work by contacting them with the DVD players chas- sis. Also, never touch the laser pickup while power is applied. 3) Soldering iron The soldering iron for use in repair work should be: (1) a ceramic soldering iron, (2) a soldering iron with its metal part grounded,

17、or (3) a soldering iron whose insulation resistance after power application is 10 M-ohm or more at 500 VDC. Soldering should be completed promptly, at a soldering iron temperature of 320C ideally. (39W). A soldering iron heated above this temperature can break down the laser diode. GENERAL 1.4 Cauti

18、on for handling Laser Pickup of DVD Player Electric Influence because of impressed electricity Laser pickup of a DVD player is weaker and more sen- sitive than that of CD player, it is possible to damage the pickup under specific electrical environments, such as impressed or leaked electricity, incl

19、uding static elec- tricity. Electricity that is impressed during modification for zone coding, or through updating the micro proces- sor and so forth, may influence the laser pickup. Prevention of Impressed Electricity In general It is very difficult to specify why and how static electric- ity is im

20、pressed. It is important to thoroughly ground the working bench and fasten the antistatic electricity wrist band, as well as carry out the daily management of isolating the resistor of the soldering iron and the leaked current in the working room. Unfortunately, it is impossible for us, even as the

21、sup- plier, to assure that all these conditions are met at any distributor or subsidiary that does not have an identical situation to that of the manufacturing site. Consequently, we do not recommend any modification for zone cod- ing, that can be a negative factor against quality assur- ance, and w

22、e consider pickup failure of any unit modi- fied for zone coding to be out of warranty. Note: A precise digital tester is needed to measure the leaked current. Condition of Soldering lron Type Output WattageTip Temperature Isolated Resistance Leaked Current For IC or LSl13-18W30040C100M1.0A For Elec

23、. Part23-30W36040C50M2.0A RadioFans.CN 收音机爱 好者资料库 4 2. REMOVAL PROCEDURES Location of Major Parts 2.1 Top Cover (Refer to Fig. 2-2) 1) Remove the 8 screws and detach the Top Cover from the main body. Fig. 2-2 Fig. 2-1 Top View (The Mechanism P.C.B. Assy is constructed on the DVD Mechanism Block.) P-

24、Supply P.C.B. AssyMechanism BLK Assy Digital P.C.B. Assy Output P.C.B. Assy DVD Main P.C.B. Assy (Bottom side of Mechanism BLK) LED P.C.B. AssyH.P P.C.B. Assy Power-SW P.C.B. AssyM-Trance P.C.B. AssyFront P.C.B. Assy REG 5V P.C.B. Assy Diode P.C.B. Assy REG 3V P.C.B. Assy 5 2.2 Front Panel (Refer to

25、 Fig. 2-3) 1) Remove the 5 screws on the front panel. 2) Remove the screws holding the H.P P.C.B. Assy. The screws can be reached by going through the hole in the left side Power-SW P.C.B. Assy. 3) Disconnect the P702 on the P-Supply P.C.B. Assy and disconnect the P530 and P200 on the Digital P.C.B.

26、 Assy. 4) Remove the front panel in front of you by pulling it outward, keeping it level as you pull. 2.3 Mechanism Block (Refer to Fig. 2-4) 1) Disconnect the flexible cable from the P550 and P570 on the Digital P.C.B. Assy. 2) Disconnect the P540 on the Output P.C.B. Assy. 3) Remove the 4 screws a

27、nd detach the machanism from the main body. 2.4 DVD Main P.C.B. Assy (Refer to Fig. 2-5) 1) Remove the 4 screws “1” on the DVD Main P.C.B. Assy. 2) Disconnect the three connectors “a” , “b” and “c” on the DVD Main P.C.B. Assy. 2.5 Mechanism Assy (Refer to Fig. 2-5) 1) Remove the DVD Main P.C.B. Assy

28、. 2) Remove the 8 screws 2 in the diagram, and then remove the left and right plates 3. Fig.2-3 Fig.2-4 Fig.2-5 Digital P.C.B. Assy Mechanism Block P570 P550 P540 1 1 23 3 2 a b c DVD Main P.C.B. Assy Mechanism Assy REMOVAL PROCEDURES P200 P530 P702 Digital P.C.B. Assy P-Supply P.C.B. Assy H.P P.C.B

29、. Assy 6 2.6. Bottom Cover EX Assy, Top Cover EX Assy and F Panel EX Assy (Refer to Fig. 2-7) 1) Remove the 6 screws 1 (M2.6x5 + Pan (#0 Type 3) and detach the Bottom Cover EX Assy. 2) Remove the 2 screws 2 (M2.6x3 + Pan), and detach the Top Cover EX Assy and F Panel EX Assy. 2.7. Mechanism P.C.B. A

30、ssy (Refer to Fig. 2-7) 1) Remove the Bottom Cover EX Assy, Top Cover EX Assy and F Panel EX Assy. See item 2.6. 2) Shorting the laser diode shorting land of the DVD Traverse Assy: Short the laser diode shorting lands (2 places shown by the arrows) with a soldering iron before removing the Mecha- ni

31、sm P.C.B. Assy. Note: Use a soldering iron whose metal part is grounded or a ceramic soldering iron. CAUTION: Do not disconnect the Flexible Cable from the connector P200 on the Mechanism P.C.B. Assy unless the laser shorting lands (2 places) are shorted. Shorting the Laser Diode Shorting Lands of t

32、he DVD Traverse Assy Note when reassembling: Unsolder the laser diode shorting lands after reassembling the Mechanism P.C.B. Assy. 3) Remove 1 screw 3 (M2.6x3.5 + Pan (#0 Type 3) and 1 screw 4 (M2.6x8 + Pan). 4) Disconnect the Mecha Flexible P.C B. Assy 5 by pulling the edges of the connector CP103

33、6 on the Mechanism P.C.B. Assy to unlock the connector edges. 5) Pull the edges of the connector CN300 7 on the Mecha- nism P.C.B. Assy to unlock the connector edges and care- fully pull out the Traverse Flexible P.C.B. Assy. 6) Pull the edges of the connector CN200 8 on the Mecha- nism P.C.B. Assy

34、to unlock the connector edges and care- fully pull out the Pickup Flexible P.C.B. 9. 7) Carefully disconnect the 3 connectors CPI04 10 (EX Mo- tor Assy), CN500 11 (Sled Motor Assy), and CN600 12 (Inner Switch) 8) Remove the Mechanism P.C.B. Assy from the Mechanism Assy. 2.8. Loading EX Assy (Refer t

35、o Fig. 2-7) 1) Remove the Mechanism P.C.B Assy. See item 2.7. 2) Remove the 6 screws 13 (ST2.6x3 + Pan (#0 Type 3), 1 screw 14 (M1.7x2.5 + Pan (#0 Type 3) (Black), and 4 screws 15 (M2x2 + Pan (#0 Type 3) (Black). Note when reassembling: When reassembling the Mecha Flexible P.C B. Assy 5, move it to

36、the front side. Be sure that the shutter is positioned in the center of the shutter sensor on the Mecha Flexible P.C.B. Assy, when the shutter of the Loading EX Assy is closed by hand, 3) Remove the EX Loading Chassis block 16 backward while lifting its to the right side a little. 4) Remove the Load

37、ing EX Assy while lifting it. Note: Do not damage the Catch Arm Assy and the Loading Link Assy of the Loading EX Assy. 2.9. DVD Traverse Assy (Refer to Fig. 2-7) 1) Remove the Loading EX Assy. See item 2.8. 2) Remove the 3 screws 17 (ST2 6x3 + Pan (#0 Type 3) and remove the EX Motor Assy. 3) Remove

38、the 3 screws 18 (ST2.6x3 + Pan (#0 Type 3) and remove the EX Chassis Assy. 4) Remove the 4 pcs. of Damper Screw SL19, 4 pcs of and SUS Collar B 20, and 4 pcs of SUS Collar T 21, and detach the DVD Traverse Assy. Notes: 1. Pay attention so as not to damage the Door Sensor P.C B. of the Mecha Flexible

39、 P.C.B. 5. 2. Assemble the Door Sensor P.C.B. so as not it is inclined. 3. Be sure that the projection of the Front Door Assy can be correctly inserted into the Door Sensor. REMOVAL PROCEDURES 7 Fig.2-7 REMOVAL PROCEDURES 2.8. Loading EX Assy 2.6. Bottom Cover EX Assy 2.6. Panel EX Assy 2.9. DVD Tra

40、verse Assy 2.7. Mechanism P.C.B. Assy 2.6. Top Cover EX Assy 8 2.10 Pickup (Refer to Fig.2-8) Caution: Do not remove or loosen screws that are not in- cluded in this procedure. Note: After reassembling the Pickup, you need to perform “Tilt Adjustment” of the Pickup. Preparation: Since you need to re

41、position the screw F03 to the original po- sition, check the current position before removing the screw F03. Give a mark on the head of screw F03 to allow easy reposi- tioning. Check the end position of the screw F03. It will be almost the same as the bottom surface of the chassis. 1) Remove the DVD

42、 Traverse Assy. Refer to item 2.9. 2) Remove a screw F01 (M1.7x3.5+Pan CMT) and detach F02 (Hook L.S) 3) Give a mark to the screw F03 for repositioning. 4) Remove a screw F03 (Screw S) and detach F04/F05 (Pickup block). F06 (SP Push Shaft) can be removed. 5) Pull out F04 (Shaft L) from F05 (Pickup).

43、 Notes on reassembling: Assemble the screw F03 so that it is roughly positioned to the original position. Perform “Tilt Adjustment”. Refer to Stap 3 “Tilt Adjustment” in 3.3 “Adjustment procedure” Fig.2-8 REMOVAL PROCEDURES Do not remove or loosen 9 3. ELECTRICAL ADJUSTMENT 3.2 Parts Location for Ad

44、justment Fig.3-1 Parts Location for Electorical Adjustment (DVD Main P.C.B. Assy) Fig.3-2 Tilt Adjustment Screws (Mechanism Assy) 3.1 Measurement instruments and Jigs 1) DC Voltmeter 2) AC Voltmeter 3) Tracking Offset Meter LE-9055A or LTM-9055 (Leader Electronics Corp.) 4) A-BEX Vertical Deviation Test Disc TDV-562 (DA09206A) 5) SONY Test Disc Type 3 10 Note: Perfor