Fostex-VM08-mix-sm维修电路原理图.pdf

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1、VM08Service ManualModel8ch 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 DEC 1999 8288788000RadioFans.CN 收音机爱 好者资料库31SAFETY INSTRUCTIONSCAUTIONRISK OF EL

2、ECTRIC 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 equilate

3、raltriangle 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 uninsulated

4、“dangerous voltage” within the products enclo-sure 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 NOT REMOVE

5、 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 future r

6、eference.3.Heed warnings - All warnings on the appliance and in the oper-ating instructions should be adhered to.4.Follow instructions - All operating and use instructions shouldbe followed.5.Water and Moisture - The appliance should not be used nearwater - for example, near a bathtub, washbowl, kit

7、chen sink,laundry tub, in a wet basement, or near a swimming pool, andthe 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 shoumRbe moved withcare. Quick stops, excessive force, and uneven surfac

8、esmay cause the appliance and cart combination to overturn.7.Wall or Ceiling Mounting - The appliance should be mounted toa wall or ceiling only as recommended by the manufacturer.8.Ventilation - The appliance should be situated so that its lo-cation or position does not interfere with its proper ve

9、ntila-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 appliance sh

10、ould 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 applianc

11、e.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 against them,

12、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 when le

13、ft unused for a long period oftime.15.Object and Liquid Entry - Care should be taken so that objectsdo not fall and liquids are not spilled into the enclosure throughopenings.16.Damage requiring Service - The appliance should be servicedby qualified service personnel when:A.The power supply cord or

14、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 damaged.

15、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.VM08LRINPUT(-10 -50dBV)INPUT(-10 -50dBV)TRIMMETERMETERMONO/STEREOCH ONCH ONGAINPANGAINPANPOST/PREEFF1EFF2AUX1A

16、UX2A/DCH14CH5/6 - 7/8A/DA/DLOMIDHI1001K10KSTL REFF1 2AUX1 2LOMIDHI1001K10KPOST/PREEFF1EFF2AUX1AUX2FOOT SWSCENE UP/DOWNSTEREO ON/OFFEFF ON/OFFSTEREO MASTERAUX MASTEREFF1EFF2LOMIDHI1001K10KCH ONST MASTERMETERTo DIGITAL OUTSP_DIF OUTPHONES VOLST BUSS OUT(-10dBV)PHONES OUT(20mW)AUX 1/2 OUT(-10dBV)D/AD/A

17、D/AD/AEFFECT1REVERB/DELAYEFFECT2MODULATION/DELAYAUX 1MASTERAUX 2MASTEREFF1MASTEREFF2MASTEREFF MUTEEFF MUTE8. BLOCK DIAGRAMRadioFans.CN 收音机爱 好者资料库VM083VM0830FADER (1/1)321AD+5R35110KBADGND321AD+5R35210KBADGND321AD+5R35310KBADGND321AD+5R35410KBADGND321AD+5R35510KBADGND321AD+5R35610KBADGND321AD+5R35710

18、KBADGND1234567891011121314151617 Stereo Out (-10dBV)+1, -2dB (20Hz 20kHz)Input 58 (-6dBV) - Stereo Out (-10dBV)+1, -2dB (20Hz 20kHz)Input 14 (-50dBV) - Stereo Out (-10dBV)+1, -3dB (20Hz 20kHz)Input 14 (-4dBV) - Aux Send 1/2 (-10dBV)+1, -2dB (20Hz 20kHz)Input 58 (-6dBV) - Aux Send 1/2 (-10dBV)+1, -2d

19、B (20Hz 20kHz)Input 58 (-6dBV) - Phones Out (10mW/16)+1, -3dB (80Hz 10kHz)S/N (with DAT envelope filter)Input 14 (+8dBV) - Stereo Out (+2dBV)86dB or more (IHF-A)Input 58 (+6dBV) - Stereo Out (+2dBV)86dB or more (IHF-A)Input 14 (-38dBV) - Stereo Out (+2dBV)75dB or more (IHF-A)Input 14 (+8dBV) - Aux S

20、end 1/2 (+2dBV)86dB or more (IHF-A)Input 58 (+6dBV) - Aux Send 1/2 (+2dBV)86dB or more (IHF-A)Phones Out Residual Noise (VR : Min)-85dBV or more (IHF-A)DISTORTION (with DAT envelope filter)Input 14 (+6dBV) - Stereo Out (0dBV)0.03% or less (1kHz)Input 58 (+4dBV) - Stereo Out (0dBV)0.03% or less (1kHz

21、)Input 14 (-40dBV) - Stereo Out (0dBV)0.08% or less (1kHz)Input 14 (+6dBV) - Aux Send 1/2 (0dBV)0.03% or less (1kHz)Input 58 (+4dBV) - Aux Send 1/2 (0dBV)0.03% or less (1kHz)Input (0dBV) - Phones Out (20mW/16)1.0% or less (1kHz)CROSSTALKInput 14 (-4dBV) - Aux Send 1/2 (0dBV)(Non input channel is mea

22、sured.)60dB or more (1kHz)CLICK NOISEPower ON/OFFStereo Out-20dBVp-p or lessAux Out-20dBVp-p or lessOther switchingStereo Out-30dBVp-p or lessAux Out-30dBVp-p or lessSHOCK NOISE-30dBVp-p or lessLEVEL INDICATIONTypeLCD Bargraph MeterNumber of Indicated Levels10dots (-48, -30, -24, -18, -12, -9, -6, -

23、3, -1, OL)Reference Level (-10dBV) Indication-12dBDIGITAL SECTIONSAMPLING FREQUENCY44.1kHzQUANTIZATION16 bit linearA/D CONVERTER20bit, 64-times Over Sampling, D/A CONVERTER24bit 128-time, Over Sampling, S/P DIF OUTFormatIEC 60958 (S/P DIF)ConnectorOpticalGENERALDC INAD-9B, DC9V, 650mA (Center : Posi

24、tive)DIMENSIONS300 (W) x 212 (D) x 70 (H) mmWEIGHTApprox. 1.2kgPOWER SUPPLYUSA/CND120VAC, 60HzEUR/UK230VAC, 50/60HzJPN100VAC, 50/60Hz*Specifications and appearance are subject to change without notice for product improvement.DISPLAY (2/2) : KEY & LED12345678910111213141516171819202122232425DGNDDGNDC

25、ONN-M-25PDGNDKEY0KEY1KEY2KEY3KEY4KEY5KEY6KEY7KEY8DIG0DIG1LED_A0LED_A1LED_K0LED_K1LED_K2LED_K3LED_K4LED_K5LED_K6LED_K7J25231KEY0.8DIG0DIG1LED_A0LED_A1DIG0.1LED_A0.1D+5_1R269NONS217TACTD209ADAN202KKEY83213D+5_1R261NONS201TACTENTERS216TACTFADER ADJD201ADAN202KD208BDAN202KKEY73123D+5_1R262NONS202TACTMAS

26、TERS209TACTLEVEL ADJD201BDAN202KD205ADAN202KKEY63213D+5_1R263NONS203TACTCH7/8S210TACTRECALLD202ADAN202KD205BDAN202KKEY53123D+5_1R264NONS204TACTCH5/6S211TACTSTORED202BDAN202KD206ADAN202KKEY43213D+5_1R265NONS205TACTCH4S212TACTEFF1D203ADAN202KD206BDAN202KKEY33123D+5_1R266NONS206TACTCH3S213TACTEFF2D203B

27、DAN202KD207ADAN202KKEY23123D+5_1R268NONS208TACTCH1S215TACTEFF/AUXD204BDAN202KD208ADAN202KKEY03213D+5_1R267NONS207TACTCH2S214TACTPAN/EQD204ADAN202KD207BDAN202KKEY1EXITD256LEDD263LEDLED_K1CH2PAN/EQD255LEDD262LEDLED_K2CH3EFF2D254LEDD261LEDLED_K3CH4EFF1D253LEDD260LEDLED_K4CH5/6STORED252LEDD259LEDLED_K5C

28、H7/8RECALLD251LEDD258LEDLED_K6MASTERLEVEL ADJD265LEDLED_K7FADER ADJD257LEDD264LEDLED_K0CH1EFF/AUXLED_K0.7VM085VM08282. CONTROLS, INDICATORS AND CONNECTORSST OUTRLPHONES1TRIM2TRIM3TRIM4TRIM-10-50-10-50-10-50-10-50RESETOUTS/P DIFDC INFOOT SWAUX SENDINPUT6/58/7785612AD-9BONLY9V35 64211011789SETUPCLEARS

29、TORERECALLSCENEEFF SELEFF1EFF2SCENE NO.MASTERCHMAXOL16122448-MINLREFF/AUXEQE1E2A1A2PANLOMIDHI123456 78 L RPHONESLEVEL ADJUST FADER ADJUSTPAN / EQEFF / AUXMAXMINCH PARAM EDITCH ON/CH SELMAXMINMAXMINMAXMINMAXMINMAXMINMAXMINEXITENTERDATAMASTER7/85/643218CH DIGITAL MIXER WITHDSP EFFECT131415121617181920

30、212223252430292827261.DC INLET connector (Center : Positive)2.S/P DIF optical output connector Optical3.FOOT SW jack 6 mm Phone (unlatched)4.RESET switch5.AUX SEND jack 6 mm TRS Phone6.INPUT 7/8 jack 6 mm TRS Phone7.INPUT 5/6 jack 6 mm TRS Phone8.INPUT 1/2/3/4 jacks 6 mm Phone9.TRIM knobs 1/2/3/410.

31、Stereo OUTPUT L/R jacks 6 mm Phone11.Headphone jack 6 mm TRS Phone12.Headphone volume control knob13.Contrast adjusting knob14.LCD display15.SCENE Number display16.Status indicator17.SCENE RECALL key18.SCENE STORE key19.EFFECT 2 Select key20.EFFECT 1 Select key21.ENTER key22.EXIT key23.DATA encoder2

32、4.INPUT faders25.MASTER fader26.CHANNEL ON/SELECT keys27.LEVEL ADJUST key28.FADER ADJUST key29.PAN/EQ select key30.EFF/AUX select keyDISPLAY (1/2) : LCDSEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19SEG20SEG21SEG22SEG23SEG24SEG25SEG26SEG27SEG28SEG29SEG30SEG31SE

33、G32SEG33SEG34SEG35SEG36SEG37SEG38SEG39SEG40SEG5SEG4SEG3SEG2SEG1COM9COM10COM11COM12COM13COM14COM15COM16SEG6SEG7SEG8SEG9SEG10SEG16SEG37SEG28SEG29SEG40SEG13SEG18SEG23SEG28SEG33COM9COM10COM11COM12COM13COM7COM6COM5COM4COM3COM2COM1123456789101112131415161718192021222324646362616059585756555453525150494847

34、464544434241SEG22SEG21SEG20SEG19SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG11SEG10SEG9SEG8SEG7SEG6SEG5SEG4SEG3SEG2SEG1SEG39SEG40COM16COM15COM14COM13COM12COM11COM10COM9COM8COM7COM6COM5COM4COM3COM2COM1LCD_D7LCD_D6LCD_D5LCD_D4LCD_D3LCD_D2321D+5_1123GND21DGNDD+5_1D+5_1DGNDD+5_1R256220KR2551KR2541KR2531KR2521

35、KR2511KR2573KJ251FPC-17PW201DGNDCON2D-5D-5R2605KB2526272829303132333435363738394080797877767574737271706968676665SEG23SEG24SEG25SEG26SEG27SEG28SEG29SEG30SEG31SEG32SEG33SEG34SEG35SEG36SEG37SEG38RSR/WELCD_D0LCD_D1C2800.01SEG22SEG21SEG20SEG19SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG11SEG10SEG9SEG8SEG7SEG6

36、SEG5SEG4SEG3SEG2SEG1GNDOSCISEG39SEG40COM16COM15COM14COM13COM12COM11COM10COM9COM8COM7COM6COM5COM4COM3COM2COM1DB7DB6DB5DB4DB3DB2SEG23SEG24SEG25SEG26SEG27SEG28SEG29SEG30SEG31SEG32SEG33SEG34SEG35SEG36SEG37SEG38OSCOV1V2V3V4V5CL1CL2VCCMDRSR/WEDB0DB1U250HD44780UU251LCD_FD41234567891011121314151617DGNDLCD_D

37、0LCD_D1LCD_D2LCD_D3LCD_D4LCD_D5LCD_D6LCD_D7ER/WRSD+5D+5D+9DGNDD-5SEG1.40L202LAMPDGNDCOM1.16SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19SEG20SEG21SEG22SEG23SEG24SEG25SEG26SEG27SEG28SEG29SEG30SEG31SEG32SEG33SEG34SEG35SEG36SEG37SEG38SEG39SEG40123456789101112131

38、4151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980D+9D+5_2D+5_2DGNDD+5_2D+5_2R270NONR2710R272NONR273NONC2830.1C2820.1C2810.1U252L78M05T-TLL201LAMPSEG5SEG4SEG3SEG2SEG1COM9COM10COM11COM12COM13COM14COM15COM16SEG6SEG7SEG8

39、SEG9SEG10SEG16SEG37SEG28SEG29SEG40SEG13SEG18SEG23SEG28SEG33COM9COM10COM11COM12COM13COM7COM6COM5COM4COM3COM2COM1AGND_1DGNDD+9VinVoutU252R273R272R271R270D+5_2D+5_1D+9KEY&LEDD+5_1VM086VM0827ANALOG OUT (1/1)2132431243165721321332841213567243132154112345678C3250.012384112J451CONN-M-8A+5STEREO_OUT_L+STERE

40、O_OUT_L-STEREO_OUT_RSTEREO_OUT_R-MUTEA-5AGNDW301CON2to DISPLAYA+5_1AGNDR33010KR3318.2KC3300.01C331100/10A+5_1VBIASC31147/16R3113.6KR3123.6KR3132.4KR4132.4KR415200R315200C315820PC415820PC327NONC427NONAGNDAGNDAGNDAGNDA-5A+5AGNDAGNDAGNDAGNDR510ARK09K12CAGNDAGNDAGNDAGNDAGNDDGNDAGNDDGNDD+5_1VBIASR3191KR3

41、20100KR321470R421470U410ANJM3414U410BNJM3414R420100KR4191KVBIASAGNDAGNDAGNDR510BRK09K12CR4181KR3181KC31910/16C320100/10C420100/10C41910/16C421NONC423220/10R42310R32310R32410KR42410KC323220/10L413BEADL414BEADC321NONC32210PR3224.7KC324100/10R4224.7KC42210PU413DTC314TKU414DTC314TKR4113.6KC4130.0068C414

42、0.0068R314200R3162.4KC316820PR414200R4162.4KC416820PC3180.01C31710/16R3171KL411BEADJ411YKB21-5074J412YKB21-5074U411DTC314TKU412DTC314TKL412BEADAGNDAGNDAGNDAGNDR4171KC41710/16U210ANJM4565MU210BNJM4565MC3130.0068C3140.0068R4123.6KC31247/16C41147/16C41247/16MASTR L(-10dBV)MASTR R(-10dBV)J413YKB21-5074P

43、HONESAGNDC3280.013. SERVICE MODE3-1Software Version CheckWhile holding down both the PAN/EQ and EFF/AUX keys, press the EFF 1 key. The LCD Display will show the Software Version of the VM08 for about a second,and then return to the Normal mode display.3-4Fader CheckWhile holding down both the PAN/EQ

44、 and EFF/AUX keys,press the FADER ADJUST key. Confirm that 14 channel parameter value (0099) and theDATA encoder parameter value (09) correctly appears onthe Character Display. Confirm that 5/6 channel parameter value (0099) correctlyappears on the CH FADER Display. Confirm that 7/8 channel paramete

45、r value (0099) correctly appears on the MASTER FADER Display. Confirm that Master Fader parameter value (0099) correctly appears on the SCENE NO. Display. If the EXIT key is pressed, the VM08 returns to Normal mode display.3-3Display CheckWhile holding down both the PAN/EQ and EFF/AUX keys, press th

46、eEXIT key. All the LEDs and LCD segments are supposed to start blinking.Check if they are correctly blinking or not. Pressing the ENTER key will change the blinking pattern. Pressing the EXIT key will put the VM08 in the condition rightafter powering on.3-2Battery CheckWhile holding down both the PA

47、N/EQ and EFF/AUX keys, press the EFF 2 key. The LCD Display will show the voltage of the memory backup battery inside theVM08 for about a second, and then return to the Normal mode display. If the voltage falls below 2.2V, the message “BattEmpty” will appear when powering ON. If the message “BattEmp

48、ty” is displayed, please replace the battery with the newone. For exchanging procedure, please refer to page 7.3-6Test Scene RECALLWhile holding down both the PAN/EQ and EFF/AUX keys, press the SCENE RECALL key This mode is designed to use at our manufacturer exclusively. It has nothing to do with s

49、ervicing the unit.3-5Key CheckWhile holding down both the PAN/EQ and EFF/AUX keys, press the LEVEL ADJUST key. Confirm that the name of the switch you press appears on the Character Display. If two or more switches are pressed at the same time, NG prompt will be displayed on the Character Display. I

50、f DATA encoder is rotated, the VM08 returns to Normal mode display.MASTERCHMASTERCHSETUPCLEARSTORERECALLSCENEEFF SELEFF1EFF1SCENE NO.MAXOL16122448-MINLREFF/AUXEQE1E2A1A2PANLOMIDHI123456 78 L RPHONESLEVEL ADJUST FADER ADJUSTPAN / EQEFF / AUXMAXMINCH PARAM EDITCH ON/CH SELMAXMINMAXMINMAXMINMAXMINMAXMI