JVC-UXA10-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL MICRO COMPONENT MD SYSTEM No.22011 Jan. 2003COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. UX-A10DVD UX-A10DVD Contents Safety precaution Preventing static electricity Disassembly method Adjustment method Maintenance of MD pickup 1-2 1-3 1-4 1-39 1-47 Procedures of changing the MD picku

2、p Maintenance of DVD pickup Procedures of changing the DVD pickup Description of major ICs 1-47 1-48 1-48 1-4988 Area suffix UB - Hong Kong RadioFans.CN 收音机爱 好者资料库 1-2 UX-A10DVD 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. F

3、or continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only. 2. Alterations of the design or circuitry

4、of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. 3. Many electri

5、cal and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement

6、 parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not hav

7、e the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. 4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high tempe

8、rature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling. 5. Leakage currnet check (Elec

9、trical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrica

10、l shock. Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to

11、 a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15

12、F AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC volt

13、age across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1. This equipment has been designed and manufactured to meet international safety standards. 2. It is the lega

14、l responsibility of the repairer to ensure that these safety standards are maintained. 3. Repairs must be made in accordance with the relevant safety standards. 4. It is essential that safety critical components are replaced by approved parts. 5. If mains voltage selector is provided, check setting

15、for local voltage. Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pref

16、orming repair of this system. In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. (This regulati

17、on does not correspond to J and C version.) RadioFans.CN 收音机爱 好者资料库 1-3 UX-A10DVD CN101 Sorting round point CN101 Flexible wire Servo control board DVD mechanism assembly MD mechanism assembly CN321 Pickup Soldering Preventing static electricity 1.Grounding to prevent damage by static electricity El

18、ectrostatic 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 stati

19、c 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 condu

20、ctive 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 instal

21、lation, 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

22、 can easily destroy the laser diode. 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 pick-up assembly might destroy.) 2.Please remove solder a

23、fter 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. (caption) Anti-static wrist strap Conductive material (conductive sheet) or iron plate RadioFans.CN 收音机爱 好者资料库 1-4 UX-A10DVD R

24、emove the six screws A on the back of the body. Remove the screw B on each side of the body. Detach the rear side of the metal cover upward while pulling the lower sides outward. 1. 2. 3. Disassembly method Removing the metal cover (See Fig.13) Fig.1 Fig.2 Fig.3 A A A Metal cover Metal cover Metal c

25、over B B 1-5 UX-A10DVD Prior to performing the following procedure, remove the metal cover. Remove the three screws C attaching the DVD mechanism assembly on top of the body. Disconnect connector CN502 and CN503 on the DVD servo board upward at the bottom of the DVD mechanism assembly. Bring up the

26、DVD mechanism assembly and remove backward. 1. 2. Removing the DVD mechanism assembly (See Fig.46) Fig.4 Fig.5 Fig.6 CC C DVD mechanism assembly DVD mechanism assembly CN503 CN502 DVD mechanism assembly 1-6 UX-A10DVD Prior to performing the following procedure, remove the metal cover and the DVD mec

27、hanism assembly. Disconnect the card wire from connector CN705 on the microcomputer board in the center of the right side of the body. Disconnect the card wire from connector CN301 on the main board in the center of the left side of the body. Disconnect the card wire from connector CN704, and the wi

28、res from CN703 and CN710 on the microcomputer board. 1. 2. 3. Removing the front panel assembly (See Fig.710) Disconnect the card wire from connector CN442 on the FL connection board on top of the body. Remove the screw D on each side of the body. Remove the two screws E on the bottom of the body. R

29、elease the joint a on the bottom and the two joints b on the right and left sides of the body using a screwdriver. Remove the front panel assembly toward the front. 4. 5. 6. 7. When disconnecting the wires from CN703 and CN710, remove the spacer attaching the wires. ATTENTION: Fig.7 Fig.8 Fig.10Fig.

30、9 Front panel assembly D D Microcomputer board CN705 Microcomputer board CN704 b Front panel assembly b CN703 CN710 Main board CN301 FL connection board CN442 Front panel assembly Microcomputer board CN704 Spacer Spacer CN710 CN703 EE a Front panel assembly 1-7 UX-A10DVD Prior to performing the foll

31、owing procedure, remove the metal cover and the DVD mechanism assembly. Remove the two screws F on the back of the body. Disconnect the wire from connector CN1 on the tuner pack on the right side of the body. Remove the thirteen screws G on the back of the body. Release the two joints c on the lower

32、 right and left sides of the rear panel. 1. 2. 3. 4. Removing the rear cover/ rear panel (See Fig.1115) The rear panel with the tuner pack comes off. REFERENCE: Fig.15Fig.14 FIg.13 Fig.11 Fig.12 Rear panel Tuner pack CN1 Rear panel G FF G G G G G Rear panel c c Rear panel Rear panel Rear cover 1-8 U

33、X-A10DVD Prior to performing the following procedure, remove the metal cover. Disconnect the card wire from connector CN1 on the tuner pack on the right side of the body. Remove the two screws H on the back of the body. 1. 2. Removing the tuner pack (See Fig.16) Prior to performing the following pro

34、cedure, remove the metal cover, the DVD mechanism assembly, the rear cover/rear panel and the DVD relay board. Disconnect the wire from connector CN711 on the microcomputer board on the right side of the body. Remove the three screws I attaching the fan bracket on top of the body and release the joi

35、nt d. Remove the two screws J attaching the fan. 1. 2. 3. Removing the fan (See Fig.17,18) Fig.17 Fig.18 Fig.16 Tuner pack CN1 H CN711 Fan bracket Fan bracket d I J I Fan 1-9 UX-A10DVD Prior to performing the following procedure, remove the metal cover, the DVD mechanism assembly and the front panel

36、 assembly. Remove the two screws K attaching the DVD mechanism attaching bracket. Remove the two screws L on each side of the MD mechanism assembly and remove the MD mechanism assembly toward the front. Disconnect the card wire from connector CN521 on the MD mechanism assembly board. 1. 2. 3. Removi

37、ng the MD mechanism assembly (See Fig.1921) Prior to performing the following procedure, remove the metal cover, the DVD mechanism assembly and the front panel assembly. Disconnect the wire from connector CN310 on the main board on the left side of the body. Release the wires from the two clamps on

38、the bottom chassis. Remove the screw M attaching the headphone board on the right side of the body. 1. 2. 3. Removing the headphone board (See Fig.22,23) Fig.21 Fig.23Fig.22 Fig.20 Fig.19 MD mechanism assembly MD mechanism assembly MD mechanism assembly CN521 DVD mechanism attaching bracket DVD mech

39、anism attaching bracket L L K Headphone board Clamp Main board CN310 Headphone board M 1-10 UX-A10DVD Prior to performing the following procedure, remove the metal cover, the DVD mechanism assembly, the front panel assembly and the rear cover/ rear panel. Remove the two screws N and the three screws

40、 O. Remove the heat sink. Disconnect the wires from connector CN307 and CN310, the card wire from CN312 on the main board on the left side of the body. Remove the screw P and Q attaching the main board. Disconnect connector CN303, CN304, CN305 and CN306 on the main board. Release the two joints e at

41、 the bottom. Draw out the main board and disconnect the card wire and the wire from connector CN302 and CN311. 1. 2. 3. 4. 5. Removing the main board (See Fig.24,25) Prior to performing the following procedure, remove the metal cover, the DVD mechanism assembly and the rear panel/ rear cover. Discon

42、nect the card wire from connector CN515 on the DVD relay board. Remove the screw R attaching the DVD relay board on top of the body. Disconnect connector CN511 and CN512 on the DVD relay board. 1. 2. 3. Removing the DVD relay board (See Fig.26) Fig.26 Fig.25 Fig.24 CN307 CN312 CN310 CN302 CN311 ee Q

43、 P Heat sink Main board CN303CN304 CN305 CN306 Main board N O Heat sink R CN515 CN511CN512 DVD connector board Main board 1-11 UX-A10DVD Prior to performing the following procedure, remove the metal cover, the DVD mechanism assembly, the front panel assembly, the rear cover/ rear panel, the main boa

44、rd and the DVD relay board. Removing the MD base chassis/ microcomputer board (See Fig.2729) Disconnect the wire from connector CN701 on the microcomputer board in the center of the right side of the body. Remove the two screws S attaching the MD base chassis on top of the body. Disconnect connector

45、 CN706 and CN707 on the microcomputer board from the main board. 1. 2. 3. Remove the two screws T attaching the microcomputer board and release the two joints f. 4. The MD base chassis with the MD mechanism assembly comes off. REFERENCE: It is not necessary to remove the DVD mechanism assembly. REFE

46、RENCE: Fig.29 Fig.28 Fig.27 MD mechanism assembly MD mechanism assemblyMD base chassis Fan bracket MD base chassis Main board CN706 CN707 CN706 CN707 Microcomputer board CN701 S T Microcomputer board f 1-12 UX-A10DVD Prior to performing the following procedure, remove the metal cover, the DVD mechan

47、ism assembly, the front panel assembly, the rear cover/ rear panel, the main board and the MD base chassis. Move the power cord stopper upward on the back of the body and remove. Disconnect the power cord from connector CN901 on the power transformer board. 1. Remove the four screws U on top of the

48、body and release the wires from the two clamps on the bottom chassis. 2. Removing the power transformer assembly (See Fig.30,31) Prior to performing the following procedure, remove the metal cover, the DVD mechanism assembly, the front panel assembly, the rear cover/ rear panel, the main board and t

49、he MD base chassis. Disconnect the wire from connector CN111 on the power amplifier board. Remove the band attaching the wire to the power amplifier board. Release the wires from the clamp. Move the power amplifier board upward to release the two joints g and remove to the right. 1. 2. 3. 4. Removing the power amplifier board (See Fig.32,33) The power cord can be removed alone.REFERENCE: Fig.31 Fig.33Fig.32 Fig.30 Power transformer board CN901 Pow