Nad-M-55-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL SERVICE MANUAL M55 MODEL : M55 AHSERVICE MANUAL NAD 2006 NAD ELECTRONICS INTERNATIONAL TORONTO M55 DIGITAL DISC PLAYER M55 DIGITAL DISC PLAYER DIGITAL DISCPLAYER RadioFans.CN 收音机爱 好者资料库 CONTENTS SECTION 1 . . . .SUMMARY SECTION 2 . . . .CABINET CONNECT A 1500 OHM 10 WATT RESIS- TOR, P

2、ARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON- DUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGE ME

3、ASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. SUBJECT: GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL.

4、WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAG- NITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN- GLE IS INTENDED TO ALERT THE SERVICE PERSONNE

5、L TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. SUBJECT : X-RADIATION 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- SONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTEN- TIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PIC- TURE TUBE. HOWEVER, THIS TUBE

6、 DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERA- TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC- TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIR- CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF

7、 DESIR- ABLE LEVELS. 2. ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS, ALWAYS RE-INSTALL THEM. 3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA TION OF THE METER

8、 SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR. 4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WH

9、ILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY, WE SUGGEST THAT YOU AND YOUR SERVICE ORGA- NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU- LATION IS ALWAYS CHECKED AS A STANDARD SERVICING

10、PROCE- DURE. AND THAT THE HIGH VOLTAGE READING BE RECORDER ON EACH CUSTOMERS INVOICE. 5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUC

11、T LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCES SIVE VOLTAGE. 6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USED). SUBJECT: IMPLOSION 1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE GRAL IMPLOSION PROTECTION SYST

12、EM, BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT. 2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES. SUBJECT : TIPS ON PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBY- HOLE OR CLOSELY FITTING SHELF SPAC

13、E. OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIA- TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER S

14、HOULD ALSO AVOID THE USE OF DEC- ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER- CIAL MOUNTING KIT. MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FE

15、ET (OR THE EQUIVALENT THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS. 5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POS

16、ITION, UNLESS THE PRODUCT IS PROPERLY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZ- ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS. 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR S

17、TAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR LARGER SCREEN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUT

18、ING FROM A SIN- GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY. PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS A.C. VOLTMETER GOOD EARTH GROUND SUCH AS THE WATER PIPE. CONDUIT. ETC PLACE THIS PROBE ON EACH EXPOSED METAL PART 1-4 SERVICING PRECAUTIONS CAUTION : Before servi

19、cing the DVD covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circum- stances create conflict between the following servicing pre- cautions and any of the safety precautions in this publica- tions, always follow the safety pre

20、cautions. Remembers Safety First: General Servicing Precautions 1. Always unplug the DVD AC power cord from the AC power source before: (1)Removing or reinstalling any component, circuit board, module, or any other assembly. (2)Disconnection or reconnecting any internal electrical plug or other elec

21、trical connection. (3)Connecting a test substitute in parallel with an elec- trolytic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this DVD or any of its assemblies

22、. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not

23、 required. 4. Do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped. 5. Do not apply AC power to this DVD and/or any of its electrical assemblies unless all solid-state device heat sinks are cerrectly installed. 6. Always connect

24、 test instrument ground lead to the appropriate ground before connection the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance mete

25、r(500V) to the blades of the attachment plug. The insulation resis- tance between each blade of the attachment plug and acces- sible conductive parts (Note 1) should be more than 1M- ohm. Note 1 : Accessible Conductive Parts including Metal pan- els, Input terminals, Earphone jacks, etc. Electrostat

26、ically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor

27、 chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor compo- nent or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a know

28、n earth ground. Alternatively, obtain and wear a commer- cially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a con

29、ductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grouned-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified a “anti-static” can gene

30、rate electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charge sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protec tive package until immediately before you are ready to install it. (Most re

31、placement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit

32、assembly into which the device will be installed. Caution : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Normally harmless motion such as the brushing together of your clo

33、thes fabric or the lifting of your foot from a carpeted floor can generate static elec- tricity sufficient to damage an ES device.) 1-5 SPECIFICATIONS GENERAL Power requirements:AC 100-240 V , 50/60 Hz Power consumption: 45W Dimensions (Approx.):435 x 100 x 300 mm (W x H x D) without foot Weight (Ap

34、prox.): 8.6 kg Operating temperature:5 C to 35 C (41 F to 95 F) Operating humidity: 5 % to 90 % OUTPUTS VIDEO OUT:1 Vp-p 75 , sync negative, RCA jack x 1/ SCART (TO TV) AUDIO OUT:2.0 Vrms (1 KHz, 0 dB), 600 , RCA jack (L, R) x 1/ SCART (TO TV) DIGITAL OUT (COAXIAL):0.5 V (p-p), 75 , RCA jack x 1 Sys

35、tem Laser: Semiconductor laser, wavelength 650 nm Signal system: PAL / NTSC Frequency response:DVD (PCM 96 kHz): 8 Hz to 44 kHz DVD (PCM 48 kHz): 8 Hz to 22 kHz CD: 8 Hz to 20 kHz Signal-to-noise ratio:More than 100 dB (ANALOG OUT connectors only) Harmonic distortion: Less than 0.008% Dynamic range:

36、More than 85 dB (DVD/CD) Accessories Video cable (1), Audio cable (1), Remote control (1), Batteries (2) 2-1 SECTION 2 CABINET 250(8), UL1672 20AWG , L=2805mm from psu board to AC inlet and power buttom 14-55505-00WIRE LD2.0A-5Y, UL2468 26AWG L=120 5mm from mechanism to decode board 14-55506-01WIRE

37、LD2.0A-6Y, UL2468 26AWG L=110 5mm from mechanism to decode board mm305,mm1,NIP61CFF00-61555-41from video board to SCART board mm357,mm1,NIP22CFF00-22555-41from video board to decode board mm357,mm1,NIP03CFF00-03555-41from video board to decode board mm3012,mm5.0,NIP42CFF01-42555-41from laser pick up

38、 to decode board 0033-2016te l nICA20-20070-71 15-10125-00AC Cord(AH Version) 15-10250-00AC Cord(C Version) 15-10250-03AC CORD?CHINESE Version)X-CCC Switch 11-01101-03Rocker SwitchRF-1003-BB2, TV-5 Mechanism 36-55313-00 37-00313-00 LASER PICK UP KHM313AAA(Q Version) B6388-DXWREDAOL00-63880-73 Metal

39、Parts 5T36061a i csaF1-300150-07 gn i tn i rp&gn i tn i ap,5#et i sk r i K2a i csaF0-400150-07 mm6.1=T4N-CCESa i csafbuS1-100150-76S mm6.1=T4N-CCESa i csafbuS1-100150-56S 6.117491214N-CCESCCES0-800640-18 mm0.2=T4N-CCESrevoCpoT0-200150-76 S67-051003-0Rear Panel CSECC-N4 T=1.6mm mm6.1=T4N-CCESl enaPra

40、eR0-600150-76S S80-051003-0Rear Panel CSECC-N4 T=1.6mm S65-051003-0Rear Panel CSECC-N4 T=1.6mm 6.165491214N-CCESCCES0-100150-18 mm0.1=T4N-CCESs i ssahC1-400150-76S mm0.1=T4N-CCESs i ssahC1-400150-56S 0.103591214N-CCESCCES0-400100-18 S67-051005-0Rear Panel AHSECC-N4 T=1.6mm S80-051005-0Rear Panel AHS

41、ECC-N4 T=1.6mm S65-051005-0Rear Panel AHSECC-N4 T=1.6mm 5-8 krameRtni rptooFrotangiseDepyTt raPnoi tpi rcseDN/P 6.165491214N-CCESCCES0-100150-18 68-051001-1Shielding Box(UP)Stainless Steel T=0.5mm 68-051002-1Shielding Box(DOWN)Stainless Steel T=0.5mm S68-051003-0Loader CoverStainless Steel T=0.5mm m

42、u n i mu lArooDDVD1-100150-07 mm8.0=T4N-CCESrepma lC0-200150-66 70-051002-0Ring CursorKirksite S70-051006-1Stop-Menu ButtonKirksite S70-048012-1Input ButtonKirksite S70-048013-0Power ButtonKirksite 70-051007-0Enter ButtonKirksite (69-009001-0)Spacer Support 1 (S69-051001-0)Spacer SupportY12 u l Arec

43、apS2-200150-96 83-043001-0Foot Assembly 92-048001-0Spring for Button 92-051001-0Spring for Cursor65Mn Plastic Parts 77-051001-1Cursor Holder 76-051001-0VFD windowPMMA 76-008001-0LED Lens 86-046001-0LED Lens Gum3M Double Side Adhesive 85-051001-0SNAP BUSHINGNB-16A mm0.1=T,4-RFpm a l Cen i L0-200150-5

44、7 3-ACRecapSBCP0-200150-58 Fasteners 61-373506-0Machine ScrewMB36-W.S-Ni audio board(4), video board(2), power supply board(4) 61-023106-1Self Taping ScrewSTB36-Ni power Sheilding box(6) )3(wod n i wdf v, )4(draobyek63BTBwercSgn i paTf l eS0-602320-16 )4( revocpot8X6BMwercSen i hcaM0-805642-16 )2( t

45、e l n iCA83OTSwercSgn i paTf l eS0-801370-16 )7( l enapraer83BTBwercSgn i paTf l eS0-802320-16 61-023106-0Self Taping ScrewSTB36 rear panel(5), SCART bracket(1), HDMI(1), load cover 4), bottom cover(4), RS232 board(2), SCARTboard(2) )4(xobgn i d l i ehSrewop83BMwercSen i hcaM0-805320-16 61-083108-0S

46、elf Taping ScrewSTPW38mechanism4) )4( toof84BTSwercSgn i paTf l eS0-801420-16 )4( tekcarbtnor f63FTSwercSgn i paTf l eS0-601360-16 )2( roodda o l iN-43BMwercSen i hcaM1-405320-16S )2( red l oHrosruC813BTBwercSgn i paTf l eS0-812320-16 61-224508-1Machine ScrewGB/T70.1, 48panel1(7) 61-224512-1Machine

47、ScrewGB/T70.1, 4X12panel2(6) )2(yekdnuoriN-65.2BMwercSen i hcaM6-605220-16S Accessaries et i hWCWNdaPnot tuB0-200840-78S et i hWCWNdaprewoP0-300840-78S 001-JY e i Te l baC0-300100-48 86-017010-0Adhesive Bonded Fabric890, 0.5mm 86-051001-0Adhesive Bonded Fabric866, 0.5mmload cover 86-051002-0Adhesive

48、 Bonded Fabric822, 0.5mmload cover )3( tekcarbtno r f mm35201daPrebbuRmm30-400010-68 86-004002-0Washer?3x1 86-018002-1Expanded Rubber110 x25x0.5mm )2(1 l enapmm1402,4-RFgn i ddaP0-200640-68 76-046001-0Screw WasherTeflon White, ?6?11.50.5top cover screw(4) Packing et i hw, rey a l ev i fmm722574585xo

49、Bt f iG0-100150-88S S88-051002-0Shipping Box610500257mmfive layer, yellow 89-051001-0 EPE PolyfoamEPE, White 89-051002-0 EPE PolyfoamEPE, White 89-048003-0M3 Little Polyfoam AEPE, white, 28-30g 87-051001-0Non-woven bag NWC White, L580 xW310 xH53(M71) mm044036gaby l oP0-100100-09 S88-043003-0Accessories Boxthree layer, white wo l l ey, rey a l eerhtteehSxoB0-400340-88 90-009001-1Manu Polybag240370mm 90-001013-0AC Cord Polybag105280mm 94-051001-0Serial No. Label5310mm mm703l ebaLADF0-400900-49 5-9 krameRtni rptooFrot