Jvc-DRM-150-SEK-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2005 Victor Company of Japan, Limited No.YD073 2005/7 DVD VIDEO RECORDER YD07320057 DR-M150SEK TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2

2、SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

3、4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、. . . 1-12 Since the whole mechanism assembly unit is replaced, the DVD recorder mechanism of this unit need not be adjusted. Area Suffix EK - U.K. DR-M150SEK D5R10 Trade Mark of the DVB Digital Video Broadcasting Project (1991 to 1996) Number : 3546 RAM/RW STANDBY/ON PR PR PUSHOPEN RadioFans.CN 收音机

5、爱 好者资料库 1-2 (No.YD073) SPECIFICATION Specifications shown are for SP mode unless otherwise specified. E. & O.E. Design and specifications subject to change without notice. Manufactured under licence from Dolby Laboratories. “Dolby” and double-D symbol are trademarks of Dolby Laboratories. “DTS “ and

6、 “DTS DIGITAL OUT “ are trademarks of Digital Theater Systems, Inc. DVB (Digital Video Broadcasting) is a registered trademark of Digital Video Broadcasting Project. The Digital Video Broadcasting system is manufactured under license from Digital Video Broadcasting Project. This product incorporates

7、 copyright protection technology that is protected by method claims of certain U.S. patents and other in- tellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended fo

8、r home and other limited viewing users only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited. DR-M150SEK GENERAL Power requirement AC 220 V - 240 V, 50 Hz/60 Hz Power consumption Power on : 37 W Power off : 6.4 W Temperature Operating : 5C to 3

9、5C Storage : -20C to 60C Operating position Horizontal only Dimensions (W H D) 435 mm 70 mm 300 mm Weight 3.4 kg VIDEO/AUDIO Recordable disc DVD-RAM 12 cm (4.7 GB/9.4 GB),DVD-RAM 8 cm (1.4 GB/2.8 GB),DVD-R 12 cm(4.7 GB), DVD-R 8 cm(1.4 GB),DVD-RW 12 cm(4.7 GB),DVD-RW 8 cm(1.4 GB) Recording format DV

10、D-RAM : DVD Video Recording format DVD-R : DVD-Video format DVD-RW : DVD-Video format, DVD Video Recording format Recording time Maximum 8 hours (with 4.7 GB disc) (XP) : Approx. 1 hour,(SP) : Approx. 2 hours,(LP) : Approx. 4 hours, (EP) : Approx. 6 hours,(FR) : Approx. 1 hour - 8 hours Audio record

11、ing system Dolby Digital (2 ch) Linear PCM (XP mode only) Video recording compression system MPEG2 (CBR/VBR) Input/Output S-video input Y:1.0 Vp-p, 75 ohms C : 0.3 Vp-p, 75 ohms Video input 1.0 Vp-p, 75 ohms (pin jack) Audio input 2Vrms (pin jack) Audio output 2Vrms (pin jack) 21-pin SCART connector

12、s IN/OUT x 1, IN x 1 i.Link 4-pin for DV input Component video output Y : 1.0 Vp-p, 75 ohms PB/PR: 0.7 Vp-p, 75 ohms Corresponding to copy protection Digital audio output Coaxial Corresponding to Dolby Digital and DTS Digital Surround Bit stream Selectable in digital audio output setting menu TUNER/

13、TIMER Tuning system Frequency synthesized tuner DVB-T 2K (UK) Channel coverage UHF : 470 MHz-850 MHz Clock reference Quartz Program capacity 7 days EPG programmable timer/8 programmes Memory backup time Approx. 10 mins ACCESSORIES Provided accessories RF cable,21-pin SCART cable,Infrared remote cont

14、rol unit,”AA” battery x 2 RadioFans.CN 收音机爱 好者资料库 (No.YD073)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be made to the original d

15、esign unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed by qualified personnel only. (2) Alterations of the design or circuitry of the product should not be made. Any design alterations of the

16、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 electrical and mechanical parts in the products have special safety-rel

17、ated characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety characteristics are

18、 identified in the Parts List of Ser- vice 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 have the same safety charac- teristics as the recommended r

19、eplacement 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 temperature parts, moving parts and/or sharp edges for the

20、 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 reassem- bling. (5) Leakage shock hazard testing After reassembling the product, always perform an

21、 isola- tion check on the exposed metal parts of the product (an- tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check. Plug the

22、 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, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent must not exceed 0.5mA AC

23、 (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- posed metal part and a known good earth gro

24、und. 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 measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat e

25、ach measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of the repairer to ensure that these safety st

26、andards 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 for local voltage. 1.3Caution Burrs formed during molding ma

27、y be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed ov

28、er with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version) Good earth ground

29、Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE RadioFans.CN 收音机爱 好者资料库 1-4 (No.YD073) 1.5Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc.

30、 is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD player

31、s or recorder. Be careful to use proper grounding in the area where repairs are being performed. (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) Ground yours

32、elf Use an anti-static wrist strap to release any static electricity built up in your body. (3) Handling the optical pickup 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 th

33、e shorted parts to their original condition. (Refer to the text.) 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. 1.6Handling the traverse unit (optical pickup) (1) Do not subject the traverse

34、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 t

35、raverse 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) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it. 1M Conductive mater

36、ial (conductive sheet) or iron palate (caption) Anti-static wrist strap (No.YD073)1-5 1.7Important 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 no serviceable parts in

37、side the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The CD,MD and DVD player uses invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks h

38、ave failed or are defeated. 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 here in may result in hazardous radiation exposure. !

39、 Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. REPRODUCTION AND POSITION OF LABEL On mechaism assembly 1-6 (No.YD073) SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.YD0

40、73)1-7 SECTION 3 DISASSEMBLY 3.1Main body section 3.1.1Remove the top cover (See figure 1) (1) Remove the four screws A attaching the top cover on both sides of the main body. (2) Remove the five screws B attaching the top cover on the back of the main body. (3) Raise the both sides and lower part o

41、f the rear of the top cover, with opening them slightly in an outward direction. And the top cover will be removed. Fig.1 3.1.2Remove the front panel assembly (See figure2, figure 3) Prior to performing the following procedure, remove the top cover. There is no need to remove the mechanism assembly.

42、 (1) Disconnect the card wires from connectors CN7002, CN7003, CN4001 on the main board and display board. (2) Remove the two screws C attaching the front panel assem- bly on the bottom of the main body. (3) Hooks a and b are removed respectively, and the front panel assembly is removed. Fig.2 Fig.3

43、 B B A x 2 TOP COVERTOP COVERTOP COVER B A x 2 B B CN7002CN4001CN7003 Main board Display board Front panel assembly Hook a Hook a Hook bHook b Front panel assembly C C 1-8 (No.YD073) 3.1.3Remove the drive unit (See figure 4) Prior to performing the following procedure, remove the top cover. There is

44、 no need to remove the front panel assembly. (1) Disconnect the socket wire from connector CN5301 on the main board. (2) Disconnect the card wire from connector CN2201 on the digital board. (3) Remove the four screws D attaching the drive unit. Fig.4 3.1.4Remove the digital board (See figure 5) Prio

45、r to performing the following procedure, remove the top cover. (1) Disconnect the card wire from connectors CN2201, CN1404, CN1103 on the digital board. (2) Disconnect the socket wire from connectors CN1101, CN1102, CN1801 on the digital board. (3) Remove the four screws E attaching the digital boar

46、d. Fig.5 D Drive unit D CN2201DDCN5301 Digital board Main board CN2201 CN1404 Digital board E E E E CN1103 CN1801 CN1101 CN1102 (No.YD073)1-9 3.1.5Remove the main board (See figure 6, figure 7) Prior to performing the following procedure, remove the top cover, drive unit. (1) Disconnect the card wir

47、e from connectors CN4001, CN4103, CN6801, CN6802 on the main board. (2) Disconnect the socket wire from connectors CN1101, CN1102, CN7001 on the digital board and display board. (3) Disconnect the socket wire from connector CN5303, on the main board. (4) Disconnect the power cord from connector CN50

48、01, on the main board. (5) Remove the six screws F attaching the main board. (6) Remove the seven screws G attaching the rear panel with main board. Fig.6 Fig.7 3.1.6Remove the dispiay board (See figure 8) Prior to performing the following procedure, remove the top cover, drive unit, front panel ass

49、embly. (1) Disconnect the socket wire from connector CN7001 on the display board. (2) Remove the two screws H attaching the display board. Fig.8 F CN5303 Digital boardF F F CN5001 F F Display board Main board CN4103 CN6801 CN6802 CN4001 CN1102 CN1101 CN7001 Rear panel G Display boardHH CN7001 1-10 (No.YD073) 3.1.7Remove the digital tuner unit (See figure 9,figure 10) Prior to performing the following procedure, remove the top cover. (1) Disconnect the card wire from connectors CN6801, CN6802, CN1404 on the main board an