Fostex-VM04-mix-sm维修电路原理图.pdf

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1、VM04Service ManualModel4ch Digital Mixer with DSP EffectsFOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A. PRINTED IN JAPAN MAR 1999 8288778000RadioFans.CN 收音机爱 好者资料库VM04VM0423SAFETY INSTRUCTIONSCAUTIONRI

2、SK OF ELECTRIC SHOCKDO NOT OPENTO PREVENT ELECTRIC SHOCK, MATCHWIDE BLADE OF PLUG TO WIDE SLOT,FULLY INSERT.POUR VITER LES CHOCS LECTRIQUES,INTRODUIRE LA LAME LA PLUS LARGE DELA FICHE DANS LA BORNE CORRE-SPONDANTE DE LA PRISE ET POUSSERJUSQU AU FOND.CAUTION:ATTENTION:The exclamation point within an

3、equilateraltriangle is intended to alert the user to thepresence of important operating and mainte-nance (servicing) instructions in the literatureaccompanying the appliance.The lightening flash with arrowhead symbol,within an equilateral triangle, is intended toalert the user to the presence of uni

4、nsulated“dangerous voltage” within the products en-closure that may be of sufficient magnitude toconstitute a risk of electric shock to persons.“WARNING”“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DONOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.”CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,DO NO

5、T REMOVE COVER (OR BACK).NO USER-SERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.1.Read instructions - All the safety and operating instructionsshould be read before the appliance is operated.2.Retain instructions - The safety and operating instructionsshould be retained for

6、future reference.3.Heed warnings - All warnings on the appliance and in theoperating instructions should be adhered to.4.Follow instructions - All operating and use instructionsshould be followed.5.Water and Moisture - The appliance should not be used nearwater - for example, near a bathtub, washbow

7、l, kitchen sink,laundry tub, in a wet basement, or near a swimming pool,and the like.6.Carts and Stands - The appliance should be used only with acart or stand that is recommended by the manufacturer.An appliance and cart combination should be moved withcare. Quick stops, excessive force, and uneven

8、 surfacesmay cause the appliance and cart combination to overturn.7.Wall or Ceiling Mounting - The appliance should be mountedto a wall or ceiling only as recommended by the manufac-turer.8.Ventilation - The appliance should be situated so that its lo-cation or position does not interfere with its p

9、roper ventila-tion. For example, the appliance should not be situated on abed, sofa, rug, or similar surface that may block the ventila-tion openings; or, placed in a built-in installation, such as abookcase or cabinet that may impede the flow of air throughthe ventilation openings.9.Heat - The appl

10、iance should be situated away from heatsources such as radiators, heat registers, stoves, or other ap-pliances (including amplifiers) that produce heat.10.Power Sources - The appliance should be connected to apower supply only of the type described in the operating in-structions or as marked on the

11、appliance.11.Grounding or Polarization - The precautions that should betaken so that the grounding or polarization means of an appli-ance is not defeated.12.Power Cord Protection - Power supply cords should be routedso that they are not likely to be walked on or pinched by itemsplaced upon or agains

12、t them, paying particular attention tocords at plugs, convenience receptacles, and the point wherethey exit from the appliance.13.Cleaning - The appliance should be cleaned only as recom-mended by the manufacturer.14.Nonuse Periods - The power cord of the appliance should beunplugged from the outlet

13、 when left unused for a long periodof time.15.Object and Liquid Entry - Care should be taken so that objectsdo not fall and liquids are not spilled into the enclosurethrough openings.16.Damage requiring Service - The appliance should be servicedby qualified service personnel when:A.The power supply

14、cord or the plug has been damaged;orB.Objects have fallen, or liquid has been spilled into theappliance; orC.The appliance has been exposed to rain; orD.The appliance does not appear to operate normally orexhibits a marked changed in performance; orE.The appliance has been dropped, or the enclosure

15、dam-aged.17Servicing - The user should not attempt to service the appli-ance beyond that described in the operating instructions. Allother servicing should be referred to qualified service personnel.CH4LOHIPRE/POSTFADERPANEFFECTSEND10kHz100HzINPUT 4(-10dBV)METERCH3LOHIPRE/POSTFADERPANEFFECTSEND10kHz

16、100HzINPUT 3(-10dBV)METERCH2LOHIPRE/POSTFADERPANEFFECTSEND10kHz100HzINPUT 2(-10dBV-50dBV)METERCH1LOHIPRE/POSTFADERPANEFFECTSEND10kHz100HzINPUT 1(-10dBV-50dBV)METEREFFECTMASTERMETERMASTER FADERPHONESPHONESOUTPUT(-10dBV)S/P DIF OUTLRLREFFECTTRIMTRIMA/DA/DA/DA/DD/AD/AEFFECT8. BLOCK DIAGRAMSRadioFans.CN

17、 收音机爱 好者资料库VM04VM04322FADER PCBTABLE OF CONTENTSNOTES* Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining theModel VM04* The following accessories are supplied with VM04 as the standard accessories.Owners manual: 8288440000AC adaptor AD-9B: 82708

18、18003 (for USA/CND): 8270818006 (for EUR): 8270818007 (for UK): 8270818010 (for JPN)* Following is the packing material for the Model VM04.PACK, SIDE, L, VM04: 8228446000PACK, SIDE, R, VM04: 8228447000CARTON, INNER, VM04: 8228722000CARTON, OUTER, VM04: 82289010001. SPECIFICATIONS. 42. CONTROLS, INDI

19、CATORS AND CONNECTORS. 53. SERVICE MODE . 6REPLACING THE BATTERY .74. EXPLODED VIEW . 85. PARTS LIST. 96. PCB PATTERN DRAWING. 117. CIRCUIT DIAGRAMS . 168. BLOCK DIAGRAMS. 23CAUTIONParts marked with this sign are safety critical components. They must always be replaced withidentical components. Refe

20、r to the Fostex Parts List and ensure exact replacement.1234567891011121314151617J401FPC-17PAD+5AD+5AD+5AD+5DGNDDGNDADGNDADGNDADGNDADGNDVR0VR1VR2VR3VR4JOG0JOG1DGNDADGNDAD+5321R40110KBAD+5ADGND321R40210KBAD+5ADGND321R40310KBAD+5ADGND321R40410KBAD+5ADGND321R40510KBAD+5ADGNDA1B2C3U401EC12EDGNDD-12DGNDD

21、+5C3010.1DGNDSEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19SEG20SEG21SEG22SEG23SEG24SEG25SEG26SEG27SEG28SEG29SEG30SEG31SEG32SEG33SEG34SEG35SEG36SEG37SEG38SEG39SEG40SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG16SEG13SEG37SEG38SEG39SEG40SEG18SEG23SEG28SEG33COM1C

22、OM2COM3COM4COM5COM6COM7COM9COM10COM11COM12COM13COM14COM15COM16COM9COM10COM11COM12COM13D+5D+5DGNDDGNDSEG1.40COM1.16To Main J12DGNDDGNDS301TACTS302TACTS303TACTS304TACTS305TACTS306TACTS307TACTS308TACTS309TACTS310TACTS311TACTS312TACTD351LEDD352LEDD353LEDD354LEDD355LEDD356NOND357LEDD358LEDKEY0KEY1KEY2KEY

23、3KEY4KEY5DIG0DIG1LED_A0LED_A1LED_K0LED_K1LED_K2LED_K3LED_K4LED_K51234567891011121314151617J302FPC-17PD301ADIODED301BDIODED302ADIODED302BDIODED303ADIODED303BDIODED304ADIODED305ADIODED306ADIODED304BDIODED305BDIODED306BDIODED359NOND360LEDD361LEDD362NONR321NONR322NONR323NONR324NONR325NONR326NOND+5D+5D+5

24、D+5D+5D+5LED_A0LED_A1DIG0DIG1LED_K0LED_K1LED_K2LED_K3LED_K4LED_K5KEY0KEY1KEY2KEY3KEY4KEY5KEY0.5LED_K0.5LED_A0.1DIG0.1FADER ADJCH1CH2CH3CH4VIEWRECALLEFF TYPEEXITSTOREEFF PARAMENTERFADER ADJCH1CH2CH3CH4RECALLEFF TYPESTOREEFF PARAMTo Main J13DEFINITION (Specification Unit : 0 dBV = 1 Vrms)NORMAL FADER

25、POSITIONMaster fader . 80 position (Master Fader display)Input fader. 80 position (Channel Fader display)Effect Send. 00 positionMIXER SECTIONINPUT 1, 2Input Level.-50dBV -10dBVInput Impedance .20k or moreConnector. 6 mm Phone Jack/UnbalancedINPUT 3, 4Input Level.-10dBVInput Impedance .20k or moreCo

26、nnector. 6 mm Phone Jack/UnbalancedOUTPUT (L, R)Output Level .-10dBVLoad Impedance.10k or moreConnector. 6 mm Phone Jack/UnbalancedPHONES OUTOutput Level .20 mW MAX (16 load)Load Impedance.16 or moreConnector. 6 mm Stereo Phone JackEQUALIZERHI (Shelving Type) .18dB or more (-10dBV / 10 kHz)LO (Shelv

27、ing Type) .18dB or more (-10dBV / 100 Hz)FREQUENCY RESPONSEInput (-10dBV) Stereo Out (-10dBV). +1, -2dB (20Hz 20kHz)Input (-50dBV) Stereo Out (-10dBV). +1, -3dB (20Hz 20kHz)Input (-10dBV) Phones Out (20mW/16) . +1, -3dB (20Hz 20kHz)S/N (with DAT envelope filter)Input (+2dBV) Stereo Out (+2dBV).86dB

28、or more (IHF-A)Input (-38dBV) Stereo Out (+2dBV). 66dB or more (IHF-A)Input 4 (+2dBV) Stereo Out (+2dBV) .81dB or more (IHF-A)Phones Out Phones Out Residual Noise . 66dB or more (IHF-A)DISTORTION (with DAT envelope filter)Input (+2dBV) Stereo Out (0dBV) .0.1% or less (100Hz 10kHz)Input (-40dBV) Ster

29、eo Out (0dBV) .0.1% or less (100Hz 10kHz)Input (0dBV) Phones Out (20mW/16) . 1.0% or less (1kHz)CROSSTALK .60dB or more (1kHz)SHOCK NOISE .-30dBVp-p or lessLEVEL INDICATIONType . LCD Bargraph MeterNumber of Indicated Levels . 11 dots (-48, -30, -24, -18, -12, -9, -6, -3, -1, 0, OL)Reference Level (-

30、10dBV) Indication . -12dBDIGITAL SECTIONSAMPLING FREQUENCY.44.1kHzQUANTIZATION . 16 bit linearA/D CONVERTER .20bit, 64 times Over Sampling Enhanced Dual Bit, Delta-SigmaD/A CONVERTER . 20bit 128-time, Over Sampling, Delta-SigmaS/P DIF OUTFormat . IEC 60958 (S/P DIF)Connector.OpticalGENERALDC IN AD-9

31、B, DC9V, 650 mA (the Center Positive)DIMENSIONS. 254 (W) 186 (D) 50 (H) mmWEIGHT . Approx. 1.1 kgPOWER SUPPLYUSA/CND . 120VAC, 60HzEUR/UK. 230VAC, 50/60HzJPN 100VAC, 50/60Hz1. SPECIFICATIONS*Specifications and appearance are subject to change without notice for product improvement.VM04VM04520MAIN PC

32、B : ANALOG OUTC11110/16R111100K32841U111ANJM2115MR11327KC11310PC1160.01A+5AGNDAGNDR112100KC112NONR1151KAGNDVBIAS3AOUTLL111BEADC11410/16R114100KAGND213U112DTC314TKAGND2314J6YKB21-5074AGNDC21110/16R211100K567U111BNJM2115MR21327KC21310PR212100KC212NONR2151KAGNDVBIAS3L211BEADC21410/16R214100KAGND213U212

33、DTC314TKAGND2314J7YKB21-5074AGNDAOUTRC12110/16R1211K213U121DTC314TKAGNDC12210/16R122100K32841U122ANJM3414ADR1244.7KC12410PA+5AGNDAGNDR123470C123NONC127100/10VBIAS4AGNDR12610C125220/10R12510KAGNDAGNDC22110/16R2211K213U221DTC314TKAGNDC22210/16R222100K567U122BNJM3414ADR2244.7KC22410PR223470C223NONVBIAS

34、4AGNDR22610C225220/10R22510KAGNDL121BEAD2314J8YKB21-5074L221BEADAGND(-10dBV)(-10dBV)MASTER LMASTER RPHONESMUTE(DIP-8PIN)321R131ARK09K12A54R131BRK09K12A1C226100/10C126100/10C215100/10C115100/10R2271KR1271KR2161KR1161KAGND231U12DTA114EKR9410KR95100KDGNDD-12D+5R610KC7100/1031D11DAN202KDGND2. CONTROLS,

35、INDICATORS AND CONNECTORSINPUT-10-50TRIMTRIM-10-503214OUTPUTLRMINMAXPHONESFOOT SWOUTS/P DIF9VDC INRESET1 234 567891.DC INLET connector the Center Positive2.S/P DIF optical output connector Optical3.FOOT SW (unlatched) jack 6 mm Phone4.Headphone jack 6 mm Stereo Phone5.Headphone volume control knobEQ

36、VIEWCHANNEL EDITMASTER4321MAXMINSCENE No061224OL1234LR1234MIN R MAXEFFHILOPANEQVIEWLEVELFADER ADJUSTENTEREXITDATASTORERECALLSCENEPARAMETERTYPEEFFECTSETUPMAXMINMAXMINMAXMINCHMASTER48 L 1214151617181310112119202425222310. Contrast control knob11. FADER ADJUST key12. LCD display13. View status indicato

37、r14. SCENE Number display15. SCENE RECALL key16. SCENE STORE key17. EFFECT PARAMETER key6.Stereo OUTPUT L/R jacks 6 mm Phone7.RESET switch8.INPUT jacks 6 mm Phone9.TRIM knobs18. EFFECT TYPE key19. EXIT key20. ENTER key21. DATA encoder22. CHANNEL EDIT key23. Input faders24. MASTER fader25. VIEW keyVM

38、04VM04196MAIN PCB : ANALOG IN2314J2YKB21-5074R10118KR10222KC10110/16R103100K32841U101ANJM2115MR1041MC103100PC1060.01A+5AGNDAGNDR106130R107100K321R11020KCAGNDAGNDC102NON567U101BNJM2115MR10810KR10910KC105NONVBIAS1AIN1+AIN1-2314J3YKB21-5074R20118KR20222KC20110/16R203100K32841U201ANJM2115MR2041MC203100P

39、C2060.01A+5AGNDAGNDR206130R207100K321R21020KCAGNDAGNDC202NON567U201BNJM2115MR20810KR20910KC205NONVBIAS2AIN2+AIN2-2314J4YKB21-5074R30127KR30247KC30110/16R303100K32841U301ANJM2115MR3040C303NONC3060.01A+5AGNDAGNDR305NONAGNDAGNDC302NON567U301BNJM2115MR30610KR30710KC305NONAGNDVBIAS3AIN3+AIN3-2314J5YKB21-

40、5074R40127KR40247KC40110/16R403100K32841U401ANJM2115MR4040C403NONC4060.01A+5AGNDAGNDR405NONAGNDAGNDC402NON567U401BNJM2115MR40610KR40710KC405NONAGNDVBIAS3AIN4+AIN4-L101BEADL201BEADL401BEADL301BEADINPUT1INPUT2INPUT3INPUT4(-10dBV to -50dBV)(-10dBV to -50dBV)(-10dBV)(-10dBV)C107220/10C207220/10C40710/16

41、C30710/16R3081KR4081K3-1Software Version CheckWhile holding down the EXIT key and ENTER key together, press the EFFECT TYPE key.The LCD Display will show the Software Version of the VM04 for a second, and then return tothe Normal Mix mode.MASTERCHMASTERCHMASTERCH3-4Fader CheckWhile holding down the

42、EXIT key and ENTER key together, press the FADER ADJUST key.3-3Display CheckWhile holding down the EXIT key and ENTER key together, press the VIEW key.All the LEDs and LCD segments are supposed to start blinking. Check if they are correctlyblinking or not.Press the ENTER key would change the blinkin

43、g pattern.If the key other than the ENTER key is pressed, the VM04 returns to Normal Mix mode display.3-2Battery CheckWhile holding down the EXIT key and ENTER key together, press the EFFECT PARAMETER key.The LCD Display will show the voltage of the memory backup battery inside the VM04 fora second,

44、 and then return to the Normal Mix mode.If the voltage falls below 2.2V, the message “BattEmpty” will appear when powering ON.If the message “BattEmpty” is displayed, please replace the battery with the new one. Forexchanging procedure, please refer to the page 7.MASTERSCENE NO.MAXCH2ch1ch4chDATA en

45、coder3chR3. SERVICE MODEMASTERCH3-5Test Scene RECALLWhile holding down the EXIT key and ENTER key together, press the SCENE RECALL keyThere are five Test Scenes (Test 1 Test 5).Pressing the ENTER key would step forward the Test Scene.Pressing the key other than the ENTER key would return the VM04 to

46、 the Normal Mix mode display.Each Test Scene is set up as shown in the table below.Eff SendLevel PAN Level PAN Level PAN Level PAN14 chTEST 180L80R80L80R8000POST-TEST 280L80R00C00C8000POST-TEST 300C00C80L80R8000POST-TEST 480L80L80L80L8000POST-TEST 500C00C00C00C8080PREDelayEffectMasterPre/PostCH 1CH

47、2CH 3CH 4BlinkTEST 1Line Check 14Output Level / Frequency ResponseTEST2Line Check 1, 2Output Level(Trim) / Frequency Response / Distortion / S/N(INPUT : Short)TEST 3Line Check 3, 4Output Level / Frequency Response / Distortion / S/N(INPUT : Short)TEST 4Line Check 14S/N(4, INPUT : Short)TEST 5Effect

48、Check 14Only the effect signal (1 Time Delay) is output.Confirm that each channel parameter value correctly appears on theCharacter Display.Confirm that the SCENE NO. Display value would vary when rotat-ing the DATA encoder.If any key is pressed, the VM04 returns to Normal Mix mode display.CAUTION:

49、While in the condition that the Test Scene is recalled, please do not turn off the power. Otherwise, correct Scene No. cannot be recalled.VM04VM04718MAIN PCB : DSP (EFFECT)TSTI11OPCL2/PDAD3/PDDA4/PD5/RST6TSTIO17TSTIO28TSTIO39DVB10DVB11SDIN212SDAD13SDOUT214SDDA15SDDA216SDOUT317SDOUT118SDIN119SMODE20B

50、CLK21LRCK22CLKO23DVDD24DVSS25XTI26XTO27TSTI228/CS29/WRQ30DVSS31DVDD32SCLK33SI34WRDY35DRDY36SO37/CASRF38/RASCE39/WE40A1641A1542A1443A1344A1245A1146A1047A948DVSS49DVDD50A851A752A653A554A455A356A257A158A059/OE60IO061IO162IO263IO364IO465IO566IO667IO768DVSS69DVDD70DZFSET71DVSS72DVDD73DVB74DVB75DZF276DZF1