Jvc-RMRE-9000-Service-Manual电路原理图.pdf

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1、SERVICE MANUALSYSTEM CONTROLLERNo.20934Apr. 2001COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.RM-RE9000RM-RE9000Area Suffix EContinental EuropeContentsSafety PrecautionsAdjustment methodDescription of major ICs1-21-31-68dBPHASE DISPLAYSLEEPdBSPEAKER1 -1802 1 2PRESENCEEXTPROCESSORSOURCE GAINPRESETAMP G

2、AINPRESETLINE 1 LINE 2 LINE 3LINE 5LINE 4 LINE 6MUTING ATTMASTER VOLUMEEACHALL12345678RM-RE90001-21. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless

3、 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 of the product should not be made. Any design alterations of the product should n

4、ot 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-related characteristi

5、cs. 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 parts which have these special safety characteristics are identified in the Parts

6、 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 have the same safety characteristics as the recommended replacement parts shown in th

7、e 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 prevention of electric shock

8、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 (Electrical shock hazard testing)After re-assembling the product, always perform an isola

9、tion 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 electrical shock.Do not use a line isolation transformer during this check.Plug the AC line co

10、rd 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 a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).Alt

11、ernate check methodPlug 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 F AC-type capacitor between an exposed metal part and a known good earth ground.Measure

12、 the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measureme

13、nt. 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 legal responsibility of the repairer to ensure that these safety standards are maintained.3. R

14、epairs 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.Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Ha

15、ving 1000 ohms/volts,or more sensitivity)1500 10W0.15 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 preforming repair of this system.In regard with component parts appearing on the silk-screen printed side (

16、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. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (Excep

17、t the JC version)http:/getMANUAL.comRM-RE90001-3Remove the four screws A on the front with a hexagon wrench.Place the reverse side of the set upward.After taking off the cushions from the four places, remove the four screws B at the inside of the rear cover.Remove the screw B at the inside of the ba

18、ttery cover.Remove the rear cover and the front panel assembly. (Because they should have been tightly engaged, remove them with due care.)Remove the battery holder board assembly from the rear cover by pulling it up. 1.2.3.4.5.6.Disassembly methodRemoving the rear cover (See Fig.1 to 3)Fig.1Fig.2Fi

19、g.3AABBBFront panel assemblyBattery holder board assemblyBBRear coverRM-RE90001-4Remove the rear cover.Remove the two screws C attaching the remote controller transmission board assembly.Remove the connector CN201 connecting the main board assembly to the remote controller transmission board assembl

20、y.1.2.3.Removing the remote controller transmission board assembly (See Fig.4)Remove the rear cover.Remove the remote controller transmission board assembly.After taking off the screws D & E attaching the volume knob and the rotary switch, remove their knobs.After taking off the nut F attaching the

21、volume board assembly with a box-type driver, remove the volume board assembly.After taking off the nut G attaching the rotary switch board assembly with a box-type driver, remove the rotary switch board assembly.Remove the fourteen screws H attaching the main board assembly.Remove the connector CN1

22、03 connecting the main board assembly to the volume board assembly, and the connector CN301 connecting the main board assembly to the rotary switch board assembly, respectively.1.2.3.4.5.6.7.Removing the main board assembly (See Fig.5 to 7)Fig.4Fig.5Fig.6CMain board assemblyEVolume knobRotary switch

23、 knobCN103FDRemote controller transmission board assemblyGCN201Fig.7Rotary switch board assemblyCRotary switch knobVolume knobMain board assemblyHCN301HVolume board assemblyRM-RE90001-5Remove the rear cover.Remove the remote controller transmission board assembly.Remove the main board assembly.Remov

24、e the two screws I attaching the modular jack board assembly.Remove the connector CN501 connecting the main board assembly to the connector terminal board assembly.1.2.3.4.5.Removing the modular jack board assembly (See Fig.8)Remove the rear cover.Remove the remote controller transmission board asse

25、mbly.Remove the main board assembly.Remove the modular jack board assembly.Remove the seven screws J attaching the switch board.Remove the board by lifting it.1.2.3.4.5.6.Removing the switch board (See Fig.9) Removing the top panel (See Fig.10)Remove the rear cover.Remove the remote controller trans

26、mission board assembly.Remove the main board assembly.Remove the modular jack board assembly.Remove the board.Remove the two screws K attaching the lens and the top panel.1.2.3.4.5.6.Reminder when the top panel is reassembledWhen the top panel is reassembled, use the screws with the specified size (

27、M3x8mm) without fail (Screws marked K).Using longer screws may damage the top panel and cause the top panel unstable.1.Fig.8Fig.9Fig.10IModular jack board assemblyJSwitch boardCN501JTop panel LensIJJKKJ JJRM-RE90001-6MN101CP117(IC101) : System controller1.Pin layout11112 22233334442.Pin functionPinN

28、o.PinNo.FunctionFunctionSymbol SymbolI/O I/ORotary output 17segment circuit clock 17segment circuit latch output 1LED circuit clock 2LED circuit latch output 2LED circuit reset 2LED circuit data output 27segment circuit latch reset 1Output data 1WakeGNDRotary output 2Rotary output 3Rotary input 1Rot

29、ary input 2Rotary input 3GNDGNDVolume input 1Volume input 2AD input2.0V5.0V Supplyclock outputclock inputSerial output dataBlight adjustmentSerial clock0.0VKey input 8Key input 2Key input Key input 3Key output 1Key output 2Key output 5Key output 3Key output 4ResetKey input 5Key input 6Key input 7Key

30、 input 1Remocon output1234567891011121314151617181920212223242526272829303132333435363738394041424344KY12KY11KY10KY9MMODRSTKY8KY7SIN2RST2LATCH2CK2KY6KY5KY4KY3KY2WAKESIN1RST1LATCH1CK1KY13ROT1ROT2ROT3ROT4ROT5ROT6N.CVOL1VOL2ADN.CVDDOSC2OSC1VSSNCSDATOBRISCLKKY1RMOUTIOOOIIIIIIIIOIOOOOOOOOOIIIIOOOOOOOOIIO

31、III Description of major ICsRM-RE90001-7123456789101A1B1CLR1Q2Q1Cx2Rx/CxVcc1Rx/Cx(TOP VIEW)TC74VHC123AF-X(IC112) :Shift register for relay control 111213141516GND1Cx1Q2Q2CLR2B2A2. Block diagram3. Timing diagram-+-+DBBtrrtrrLHVref VrefC2F/FRRX/CXRX/CXCXQNQPVCCVCCQCK QAACLRCLRQQQQVIHVOLVOHVOHVrefHVref

32、LGNDVOLVIHVIHVILVILVILVCCtw OUT tw OUT tw OUT+1. Pin layout RM-RE90001-812345678910111213141A1B1Y2A2B2YGNDVcc4B4A4Y3B3A3Y(TOP VIEW)X : Dont CareTC74VHC08F-X (IC112) :Data line buffer A B YL LLL H LH L LH HH1. Pin. layout 2. True tableRM-RE90001-9RM-RE90002-112345ABC DKey16Key713IC101Micro controller

33、LED driverData line bufferModularjackLED driverLED driverDC-DC converterPower supplyIC104IC105IC103SDA TOSCL ICLEDLEDLEDGNDVOL 2RMOUTROT1 to ROT6BatteryholderIC112LATCH1SIN1RST1CK1LATCH2SIN2RST2CK2PRESENCE2PRESENCE1SPEAKER2SPEAKER1MUTINGATTEXTLINE161 2 3Rotary switchVolumeTransmission partIC106toIC110Block diagram