Fostex-VM08-mix-sm维修电路原理图.pdf

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1、VM08 Service Manual Model 8ch Digital Mixer with DSP Effects FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021 FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A. PRINTED IN JAPAN DEC 1999 8288788000 RadioFans.CN 收音机爱 好者资料库 31 SAFETY INSTRUCTIONS CAUTION

2、RISK OF ELECTRIC SHOCK DO NOT OPEN TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT. POUR VITER LES CHOCS LECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRE- SPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND. CAUTION: ATTENTION: The exclamation po

3、int within an equilateral triangle is intended to alert the user to the presence of important operating and mainte- nance (servicing) instructions in the literature accompanying the appliance. The lightening flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user t

4、o the presence of uninsulated “dangerous voltage” within the products enclo- sure that may be of sufficient magnitude to constitute a risk of electric shock to persons. “WARNING” “TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.” CAUTION: TO REDUCE THE

5、RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. 1.Read instructions - All the safety and operating instructions should be read before the appliance is operated. 2.Retain instructions - The safety and operating i

6、nstructions should be retained for future reference. 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 should be followed. 5.Water and Moisture - The appliance should not be used near w

7、ater - for example, near a bathtub, washbowl, 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 a cart or stand that is recommended by the manufacturer. An appliance and cart combination shoumRbe moved wit

8、h care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn. 7.Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer. 8.Ventilation - The appliance should be situated so that its

9、lo- cation or position does not interfere with its proper ventila- tion. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventila- tion openings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the flow

10、of air through the ventilation openings. 9.Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other ap- pliances (including amplifiers) that produce heat. 10.Power Sources - The appliance should be connected to a power supply only of the type

11、 described in the operating in- structions or as marked on the appliance. 11.Grounding or Polarization - The precautions that should be taken so that the grounding or polarization means of an appli- ance is not defeated. 12.Power Cord Protection - Power supply cords should be routed so that they are

12、 not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance. 13.Cleaning - The appliance should be cleaned only as recom- mended by the manufacturer. 14.Nonuse Pe

13、riods - The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. 15.Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. 16.Damage requiring Service - The app

14、liance should be serviced by qualified service personnel when: A.The power supply cord or the plug has been damaged; or B.Objects have fallen, or liquid has been spilled into the appliance; or C.The appliance has been exposed to rain; or D.The appliance does not appear to operate normally or exhibit

15、s a marked changed in performance; or E.The appliance has been dropped, or the enclosure damaged. 17Servicing - The user should not attempt to service the appli- ance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel. VM08 L R

16、INPUT (-10 -50dBV) INPUT (-10 -50dBV) TRIM METER METER MONO/ STEREO CH ON CH ON GAIN PAN GAIN PAN POST/PRE EFF1 EFF2 AUX1 AUX2 A/D CH14 CH5/6 - 7/8 A/D A/D LOMIDHI 1001K10K ST L R EFF 1 2 AUX 1 2 LOMIDHI 1001K10K POST/PRE EFF1 EFF2 AUX1 AUX2 FOOT SW SCENE UP/DOWN STEREO ON/OFF EFF ON/OFF STEREO MAST

17、ER AUX MASTER EFF1 EFF2 LOMIDHI 1001K10K CH ON ST MASTER METER To DIGITAL OUT SP_DIF OUT PHONES VOL ST BUSS OUT (-10dBV) PHONES OUT (20mW) AUX 1/2 OUT (-10dBV) D/A D/A D/A D/A EFFECT1 REVERB/DELAY EFFECT2 MODULATION/DELAY AUX 1 MASTER AUX 2 MASTER EFF1 MASTER EFF2 MASTER EFF MUTE EFF MUTE 8. BLOCK D

18、IAGRAM RadioFans.CN 收音机爱 好者资料库 VM08 3 VM08 30 FADER (1/1) 3 2 1 AD+5 R351 10KB ADGND 3 2 1 AD+5 R352 10KB ADGND 3 2 1 AD+5 R353 10KB ADGND 3 2 1 AD+5 R354 10KB ADGND 3 2 1 AD+5 R355 10KB ADGND 3 2 1 AD+5 R356 10KB ADGND 3 2 1 AD+5 R357 10KB ADGND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Stereo Out

19、(-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, -2dB (20Hz 20kHz) Input 58 (-6dBV) - Phones

20、 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 Send 1/2 (+2dBV)86dB or more (IHF-A

21、) 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) Input 14 (-40dBV) - Stereo

22、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) CROSSTALK Input 14 (-4dBV) - Aux Send 1/2 (0dBV) (Non input channel is measured.)60dB or more (1

23、kHz) CLICK NOISE Power ON/OFFStereo Out-20dBVp-p or less Aux Out-20dBVp-p or less Other switchingStereo Out-30dBVp-p or less Aux Out-30dBVp-p or less SHOCK NOISE-30dBVp-p or less LEVEL INDICATION TypeLCD Bargraph Meter Number of Indicated Levels10dots (-48, -30, -24, -18, -12, -9, -6, -3, -1, OL) Re

24、ference Level (-10dBV) Indication-12dB DIGITAL SECTION SAMPLING FREQUENCY44.1kHz QUANTIZATION16 bit linear A/D CONVERTER20bit, 64-times Over Sampling, D/A CONVERTER24bit 128-time, Over Sampling, S/P DIF OUT FormatIEC 60958 (S/P DIF) ConnectorOptical GENERAL DC INAD-9B, DC9V, 650mA (Center : Positive

25、) DIMENSIONS300 (W) x 212 (D) x 70 (H) mm WEIGHTApprox. 1.2kg POWER SUPPLY USA/CND120VAC, 60Hz EUR/UK230VAC, 50/60Hz JPN100VAC, 50/60Hz *Specifications and appearance are subject to change without notice for product improvement. DISPLAY (2/2) : KEY & LED 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

26、19 20 21 22 23 24 25 DGND DGND CONN-M-25P DGND KEY0 KEY1 KEY2 KEY3 KEY4 KEY5 KEY6 KEY7 KEY8 DIG0 DIG1 LED_A0 LED_A1 LED_K0 LED_K1 LED_K2 LED_K3 LED_K4 LED_K5 LED_K6 LED_K7 J252 31 KEY0.8 DIG0 DIG1 LED_A0 LED_A1 DIG0.1LED_A0.1 D+5_1 R269 NON S217 TACT D209A DAN202K KEY8 3213 D+5_1 R261 NON S201 TACT

27、ENTER S216 TACT FADER ADJ D201A DAN202K D208B DAN202K KEY7 3123 D+5_1 R262 NON S202 TACT MASTER S209 TACT LEVEL ADJ D201B DAN202K D205A DAN202K KEY6 3213 D+5_1 R263 NON S203 TACT CH7/8 S210 TACT RECALL D202A DAN202K D205B DAN202K KEY5 3123 D+5_1 R264 NON S204 TACT CH5/6 S211 TACT STORE D202B DAN202K

28、 D206A DAN202K KEY4 3213 D+5_1 R265 NON S205 TACT CH4 S212 TACT EFF1 D203A DAN202K D206B DAN202K KEY3 3123 D+5_1 R266 NON S206 TACT CH3 S213 TACT EFF2 D203B DAN202K D207A DAN202K KEY2 3123 D+5_1 R268 NON S208 TACT CH1 S215 TACT EFF/AUX D204B DAN202K D208A DAN202K KEY0 3213 D+5_1 R267 NON S207 TACT C

29、H2 S214 TACT PAN/EQ D204A DAN202K D207B DAN202K KEY1 EXIT D256 LED D263 LED LED_K1 CH2 PAN/EQ D255 LED D262 LED LED_K2 CH3 EFF2 D254 LED D261 LED LED_K3 CH4 EFF1 D253 LED D260 LED LED_K4 CH5/6 STORE D252 LED D259 LED LED_K5 CH7/8 RECALL D251 LED D258 LED LED_K6 MASTER LEVEL ADJ D265 LED LED_K7 FADER

30、 ADJ D257 LED D264 LED LED_K0 CH1 EFF/AUX LED_K0.7 RadioFans.CN 收音机爱 好者资料库 VM08 5 VM08 28 2. CONTROLS, INDICATORS AND CONNECTORS ST OUTRLPHONES 1TRIM2TRIM3TRIM4TRIM -10-50-10-50 -10-50-10-50 RESETOUT S/P DIFDC INFOOT SWAUX SENDINPUT 6/58/7 7 8 5 6 1 2 AD-9B ONLY 9V 35 64211011789 SETUP CLEAR STORERE

31、CALL SCENE EFF SEL EFF1EFF2 SCENE NO. MASTERCH MAX OL 1 6 12 24 48 - MIN L R EFF/AUX EQ E1E2A1A2 PANLOMIDHI 123456 78 L R PHONES LEVEL ADJUST FADER ADJUST PAN / EQEFF / AUX MAXMIN CH PARAM EDIT CH ON/CH SEL MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN EXITENTER DATA MASTER7/85/64321 8CH DIGITAL M

32、IXER WITH DSP EFFECT 1314151216 17 18 19 20 21 22 232524 30 29 28 27 26 1.DC INLET connector (Center : Positive) 2.S/P DIF optical output connector Optical 3.FOOT SW jack 6 mm Phone (unlatched) 4.RESET switch 5.AUX SEND jack 6 mm TRS Phone 6.INPUT 7/8 jack 6 mm TRS Phone 7.INPUT 5/6 jack 6 mm TRS Ph

33、one 8.INPUT 1/2/3/4 jacks 6 mm Phone 9.TRIM knobs 1/2/3/4 10.Stereo OUTPUT L/R jacks 6 mm Phone 11.Headphone jack 6 mm TRS Phone 12.Headphone volume control knob 13.Contrast adjusting knob 14.LCD display 15.SCENE Number display 16.Status indicator 17.SCENE RECALL key 18.SCENE STORE key 19.EFFECT 2 S

34、elect key 20.EFFECT 1 Select key 21.ENTER key 22.EXIT key 23.DATA encoder 24.INPUT faders 25.MASTER fader 26.CHANNEL ON/SELECT keys 27.LEVEL ADJUST key 28.FADER ADJUST key 29.PAN/EQ select key 30.EFF/AUX select key DISPLAY (1/2) : LCD SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SE

35、G13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG5 SEG4 SEG3 SEG2 SEG1 COM9 COM10 COM11 COM12 COM13 COM14 COM15 COM16 SEG6 SEG7 SEG8 SEG9 SEG10 SEG16 SEG37 SEG28 SEG29 SEG40 SEG13

36、SEG18 SEG23 SEG28 SEG33 COM9 COM10 COM11 COM12 COM13 COM7 COM6 COM5 COM4 COM3 COM2 COM1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10

37、 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG39 SEG40 COM16 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM8 COM7 COM6 COM5 COM4 COM3 COM2 COM1 LCD_D7 LCD_D6 LCD_D5 LCD_D4 LCD_D3 LCD_D2 3 2 1 D+5_1 1 2 3 GND 2 1 DGND D+5_1 D+5_1 DGND D+5_1 R256 220K R255 1K R254 1K R253 1K R252 1K R251 1K R257 3K J

38、251 FPC-17P W201 DGND CON2 D-5 D-5 R260 5KB 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 RS R/W E LCD_D0 LCD_D1 C280 0.01 SEG22 SEG21 SEG20 SEG19 SEG18 S

39、EG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 GND OSCI SEG39 SEG40 COM16 COM15 COM14 COM13 COM12 COM11 COM10 COM9 COM8 COM7 COM6 COM5 COM4 COM3 COM2 COM1 DB7 DB6 DB5 DB4 DB3 DB2 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG3

40、5 SEG36 SEG37 SEG38 OSCO V1 V2 V3 V4 V5 CL1 CL2 VCC M D RS R/W E DB0 DB1 U250 HD44780U U251 LCD_FD4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 DGND LCD_D0 LCD_D1 LCD_D2 LCD_D3 LCD_D4 LCD_D5 LCD_D6 LCD_D7 E R/W RS D+5 D+5 D+9 DGND D-5 SEG1.40 L202 LAMP DGND COM1.16 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 S

41、EG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

42、39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 D+9D+5_2 D+5_2 DGND D+5_2D+5_2 R270 NON R271 0 R272 NON R273 NON C283 0.1 C282 0.1 C281 0.1 U252 L78M05T-TL L201 LAMP SEG5 SEG4 SEG3 SEG2 SEG1 COM9 COM10 COM11 COM12 COM13 CO

43、M14 COM15 COM16 SEG6 SEG7 SEG8 SEG9 SEG10 SEG16 SEG37 SEG28 SEG29 SEG40 SEG13 SEG18 SEG23 SEG28 SEG33 COM9 COM10 COM11 COM12 COM13 COM7 COM6 COM5 COM4 COM3 COM2 COM1 AGND_1DGND D+9 VinVout U252R273R272R271R270 D+5_2 D+5_1 D+9 KEY&LED D+5_1 RadioFans.CN 收音机爱 好者资料库 VM08 6 VM08 27 ANALOG OUT (1/1) 2 13

44、 2 4 3 1 2 4 3 1 6 5 7 2 13 2 13 3 2 84 1 2 13 5 6 7 2 4 3 1 3 2 15 4 1 1 2 3 4 5 6 7 8 C325 0.01 2 3 84 1 1 2 J451 CONN-M-8 A+5 STEREO_OUT_L+ STEREO_OUT_L- STEREO_OUT_R STEREO_OUT_R- MUTE A-5 AGND W301 CON2 to DISPLAY A+5_1 AGND R330 10K R331 8.2K C330 0.01 C331 100/10 A+5_1 VBIAS C311 47/16 R311 3

45、.6K R312 3.6K R313 2.4K R413 2.4K R415 200 R315 200 C315 820P C415 820P C327 NON C427 NON AGND AGND AGND AGND A-5 A+5 AGND AGND AGND AGND R510A RK09K12C AGND AGND AGND AGNDAGND DGND AGND DGND D+5_1 VBIAS R319 1K R320 100K R321 470 R421 470 U410A NJM3414 U410B NJM3414 R420 100K R419 1K VBIAS AGND AGN

46、D AGND R510B RK09K12C R418 1K R318 1K C319 10/16 C320 100/10 C420 100/10 C419 10/16 C421 NON C423 220/10 R423 10 R323 10 R324 10K R424 10K C323 220/10 L413 BEAD L414 BEAD C321 NON C322 10P R322 4.7K C324 100/10 R422 4.7K C422 10P U413 DTC314TK U414 DTC314TK R411 3.6K C413 0.0068 C414 0.0068 R314 200

47、 R316 2.4K C316 820P R414 200 R416 2.4K C416 820P C318 0.01 C317 10/16 R317 1K L411 BEAD J411 YKB21-5074 J412 YKB21-5074 U411 DTC314TK U412 DTC314TK L412 BEAD AGND AGND AGND AGND R417 1K C417 10/16 U210A NJM4565M U210B NJM4565M C313 0.0068 C314 0.0068 R412 3.6K C312 47/16 C411 47/16 C412 47/16 MASTR

48、 L (-10dBV) MASTR R (-10dBV) J413 YKB21-5074 PHONES AGND C328 0.01 3. SERVICE MODE 3-1Software Version Check While 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 dis

49、play. 3-4Fader Check While holding down both the PAN/EQ and EFF/AUX keys, press the FADER ADJUST key. Confirm that 14 channel parameter value (0099) and the DATA encoder parameter value (09) correctly appears on the Character Display. Confirm that 5/6 channel parameter value (0099) correctly appears on the CH FADER Display. Confirm that 7/8 channel parameter 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