Vestax-SNC02-mix-sm 电路图维修手册.pdf

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1、SPECIFICATION FEATURES 1. Seamless iTunes Integration Launch djay and youre ready to mix your songs and playlists from iTunes, with beautiful cover art right on the virtual vinly. 2. Drag & Drop Mixing djay lets you easily mix all your tracks and playlists from iTunes. Simply drag and drop the songs

2、 onto the turntables. 3. Auto mix Enable Automix mode and let djay mix your playlists with seamless DJ-style transitions. Non-stop and fully automatic. 4. Live Microphone Put your own voice into the mix. Use Echo or Pitch-Changer effects to transform your vocals for the perfect MC performance or hou

3、rs of fun at your next party. 5. Live Mix Recording Record your mixes live-for your latest podcast, movie project, or photo slide show with seamless music transitions. Or to make a classic “mixtape” SERVICE MANUAL MODEL: SNC02 RadioFans.CN 收音机爱好者资料库 RadioFans.CN 收音机爱好者资料库 RadioFans.CN 收音机爱好者资料库 S

4、NC02 (BOM) LvlMaterialsSPECSQtyPart Location .1FFC181000200118P FLAT WIRE 200MM FFC143 .1LAC42SNL06LABEL (DJAY)16 .1MT5101801GROUNDING PLATE28 .1MT510440101FIXED METAL (WHEEL) W/SPRAYING22 .1MT5105502METAL SHAFT217 .1NM1106115VELVET CARPET320 .1NM1106118VELVET CARPET219 .1NM5106101VELVET CARPET839 .

5、1NP251SNL01NAME PLATE (UP)110 .1NP251SNL02NAME PLATE (DOWN)111 .1NP251SNL03NAME PLATE (REAR)141 .1NP351SNL07ALUMINIUM FOIL248 .1PT5104401FIXED PLASTIC (PLATTER)24 .1PT511060102PLASTIC KNOB(PLAY) W/PRINTING229 .1PT5110602PLASTIC KNOB(KEY)225 .1PT511060401PLASTIC KNOB W/PRINTING (LEFT)126 .1PT51106040

6、2PLASTIC KNOB W/PRINTING (RIGHT)127 .1PT511060403PLASTIC KNOB (CUE) PRINTING228 .1PT5110605PLASTIC KNOB (+)124 .1PT5110606PLASTIC KNOB(AUTO MIX)821 .1PT5110607PLASTIC KNOB (REC)122 .1PT511060701PLASTIC KNOB(REC) W/PRINTING123 .1PT5110608SLIDER KNOB(LARGE)312 .1PT5110609SLIDER KNOB(PITCH)213 .1PT5110

7、61002SLIDER KNOB (EQ) W/ BLUE PAINT614 .2PT5110610SLIDER KNOB(EQ)1 .1PT511061003SLIDER KNOB (EQ) W/ ORANGE PAINT215 .2PT5110610SLIDER KNOB(EQ)1 .1PT5110611KNOB VR (LARGE)316 .1PT5110613PLASTIC KNOB236 .1PT5110701ROTATE KNOB25 .1PT5130201CABINET118 .1PT5130301BOTTOM BOARD137 .1PU007007003CONDUCTIVE F

8、OAM23 .1PU007015005CONDUCTIVE FOAM346 .1RN109111E RING(9MM)29 .1RU0730604RUBBER FOOT438 .1SC0306PBBISCREW1334 .1SC0308FBNISCREW61 .1SC0308RBNISCREW2831 .1SC0310RBBISCREW1447 .1WR112615032G13P WIRE -ROHS344 .1WR112615052W26P WIRE 2.0MM 150MM DOUBLE MALE JACK145 .1WS117010505PWASHER (TEFLON)47 .1TWPC0

9、9S00101PCB ASSY (SOUND CARD)1 .2PC09S001 PCB SOUND CARD (DOUBLE LAYER FR4 300*95MM)1 .2TWPC09S001A01PCB ASSY SOUND CARD140 .3JW5206TJUMPER WIRE (A.I.) 52MM2EC606, 607 .3EC10616TSE. CAP 10UF/16V (7MM)9 EC209, 301, 302, 601, 602, 604, 605, EC608, 609 .3EC10625TL(LOW LEAKAGE) E. CAP 10UF/25V1EC801 .3EC

10、10625TSE. CAP 10UF/25V2EC910, 913 .3EC22725TSCapacitor 220UF/25V-RoHS1EC802 .3EC47550TSE. CAP (SMALL) 4.7UF/50V6EC901905, 907 .3EC47625TSE. CAPACITOR 47UF/25V 7MM2EC908, 911 .3AA822383XIC AIC1525CS (SOP8)1IC905 .3AL2-51-0140DIODE POWER SCHOTTKY MBRS140LT3 40V 1A2ZD903, 904 .3AL2-61-3463IC REG VOLTAG

11、E MC34063A ADJ1IC904 .3AL2-61-7223IC REG VOLTAGE NJU7223DL1-33 3.3V TO-2522IC902, 903 .3AL2-71-0074IC MC33079 QUAD-OP-AMP SOP-14 (TL074)1IC602 .3AL2-75-4344 IC CONVERTER D/A CS4344 24BIT 192KHZ (12S) TSSOP10 2IC301, 601 LvlMaterialsSPECSQtyPart Location .3CS101J5003COGCHIP CAP 100PF/50V +/-5% 0603 (

12、COG)6C401, 606, 607, 613, 614, 910 .3CS102K5003X7RCHIP CAP 1000PF/50V,X7R,+/-10%, SMD 06031C402 .3CS104K5003X7RCHIP CAP 0.1UF/50V,X7R,+/-10%, SMD 060326 C210212, 301, 302, 405, 410417, 601, C602, 615, 616, 901906, 913, 914 .3CS270J5003COGC.CAP 27PF/50V,COG,+/-5%,-55+125C,SMD 06032C408, 409 .3CS300J5

13、003NPOCHIP CAPACITOR 30PF, NPO, +/-5%, 50V2C403, 404 .3CS332J5003X7RC.CAP 3300PF/50V,X7R,+/-5%,SMD 06032C604, 605 .3CS472K5003X7Rchip Cap 4.7nF 50V 10% 0603 X7R2C406, 407 .3DIEN1N4148WSMDIODE FAST SWICTHING 1N4848W SOD-1233D801803 .3DISR26SCHOTTKY BARRIER RECTIFIER SMD4ZD901, 905, 907, 908 .3IC74AHC

14、1G125GWIC 74AHC1G125G SOT3531IC908 .3IC74HCT00DIC 74HCT00D QUAD 2 INPUT NAND GATE1IC907 .3ICBA05FPIC (BA05FP)1IC901 .3ICG696L293T1UFIC RESET1IC403 .3ICPCM1808PWRIC PCM1808PWR1IC202 .3ICTUSB3200IC TUSB3200ACPAH TQFP1IC401 .3ICYHFRS001IC WITH PROGRAME1IC402 .4IC24LC64TIMIIC (64K SERIAL EEPROM) SOP 150

15、MIL1 .3RS00012J06CHIP RES. 0 OHM,1/2W,5%,12064R906, 910, 924, 951 .3RS00018J03CHIP RES. 0 OHM,1/8W,+/-5%,06034R430, 432, 803, 804 .3RS04R704J06CHIP RES. 4.7 OHM,1/4W,+/-5%,12061R901 .3RS0R2204F06CHIP RES. 0.22 OHM,1/4W,+/-1%,12061R911 .3RS10018J03CHIP RES. 10 OHM,1/8W,+/-5%,06031R431 .3RS10118F03CHI

16、P RES. 100 OHM, 1/8W, 1%, 060319 R217220, 301304, 411, 412, 434436, R601604, 620, 621 .3RS10218F03CHIP RES. 1K OHM,1/8W,1%,06033R622, 623, 913 .3RS10318J03CHIP RES. 10K OHM,1/8W,+/-5%,06034R429, 805, 907, 950 .3RS10418J03CHIP RES. 100K OHM,1/8W,+/-5%,06034R918920, 923 .3RS10K718F03CHIP RES.10.7K OHM

17、,1/8W,+/-1%,06032R610, 611 .3RS15118J03CHIP RES. 150 OHM,1/8W,5%,06031R437 .3RS15218F03CHIP RES. 1.50K OHM,1/8W,1%,06031R405 .3RS180K10F03CHIP RES. 180K OHM,1/10W,+/-1%,06031R922 .3RS27R418F03CHIP RES. 27.4 OHM,1/8W,+/-1%,06032R406, 407 .3RS309118F03CHIP RES. 3.09K OHM,1/8W,+/-1%,06031R401 .3RS32411

18、8F03CHIP RES. 3.24K OHM,1/8W,+/-1%,06032R606, 607 .3RS33218F03CHIP RES. 3.3K OHM,1/10W,1%,06031R912 .3RS47318F03CHIP RES. 47K OHM,1/8W,+/-1%,06039R612619, 921 .3RS499118F03CHIP RES 4.99K OHM , 1/8W, 1% 06032R427, 428 .3RS56418J03CHIP RES. 560K OHM, 1/8W, 5%, 06032R801, 802 .3RS5K3618F03CHIP RES 5.36

19、K OHM , 1/8W, 1% 06032R608, 609 .3TR2SA1037ASMTRANSISTOR 608 SMD1Q801 .3TR2SD2114KSMTRANSISTOR NPN 2SD2114K SOT-23 (SMD)2Q602, 603 .3TRDTA124ESMTRANSISTOR A124 (SMD)1Q802 .3UH465516-351INDUCTOR 7.0UH 70M OHM 1.0A SMD 4.6*1.6*5.51L1 .3UHPIC1207-221MCOIL SMD 220UH1L2 .3UHPIH6D28-220MINDUCTOR 22UH 1.2A

20、 SMD-ROHS2L4, 5 .3EC33725TLE E.CAPACITOR 330UF/25V 8X15MM (UHD1E331MPT)1EC909 .3FCN2S1001801CONNECTOR , 2 WAY CONTACT, 180, 1.0MM, 18P1FCN1 .3JK4690-DR30-04FUSB2.0 B-TYPE 901JK901 .3JKDJ-0702B-020DC SOCKET 2.0MM1JK902 .3RJ2008HP-11F15ARCA JACK (2P)1JK601 .3SWSSSF113NA1SWITCH (ON/OFF) 3T1SW901 .3TE10

21、2006026P CONNECTOR SOCKET 901TE11 .3TE6120003013P CONNETOR SOCKET2TE4, 5 .3TE6220003023P CONNECTOR SOCKET1TE21 .3VRR10302010VARIABLE RESISTOR 10K2B 20MM2VR101, 102 .3XTM06000X3CRYSTAL 6MHZ(49US)-ROHS1X401 .2TWPC09S001B01PCB ASSY MIC.JK135 .3JW5206TJUMPER WIRE (A.I.) 52MM1EC703 .3EC10550TSE. CAPACITO

22、R 1UF/50V(7MM)1EC702 .3EC10616TSE. CAP 10UF/16V (7MM)1EC704 .3EC10716TSE. CAP (SMALL) 100UF/16V3EC705707 .3EC47450TSE. CAP (SMALL) 0.47UF/50V1EC701 LvlMaterialsSPECSQtyPart Location .3CS100J5003COGC.CAP 10PF/50V,COG,+/-5%, SMD 06031C703 .3CS102K5003X7RCHIP CAP 1000PF/50V,X7R,+/-10%, SMD 06031C701 .3

23、CS104K1603X7RCHIP CAP 0.1UF 10% 16V 06031C704 .3CS470J5003COGCHIP CAP 47PF +/-5% 50V 0603 COG1C702 .3ICNJM2100MIC (NJM2100M)1IC701 .3RS10518F03RESISTOR 1M 1% SMD 0603 -ROHS1R705 .3RS15218F03CHIP RES. 1.50K OHM,1/8W,1%,06032R708, 709 .3RS22318F03CHIP RES.22K OHM,1/8W,1%,06031R703 .3RS22418J03CHIP RES

24、. 220KOHM,SMD0603,+/-5%,1/10W1R701 .3RS47218J03CHIP RES. 4.7K OHM,1/8W,+/-5%,06031R704 .3RS47318F03CHIP RES. 47K OHM,1/8W,+/-1%,06032R706, 707 .3RS56218J03CHIP RES. 5.6K OHM,1/8W,+/-5%,06031R702 .3JY6314-02-030EARPHONEBASE W/NUT1JK701 .3TE6220003023P CONNECTOR SOCKET1TE22 .3VRR50303007VARIABLE RESIS

25、TOR 50KA-ROHS1VR701 .2TWPC09S001C01PCB ASSY HEADPHONE JK142 .3EC10616TSE. CAP 10UF/16V (7MM)2EC303, 304 .3EC10716TSE. CAP (SMALL) 100UF/16V2EC305, 306 .3CS101J5003COGCHIP CAP 100PF/50V +/-5% 0603 (COG)2C307, 308 .3CS104K5003X7RCHIP CAP 0.1UF/50V,X7R,+/-10%, SMD 06031C309 .3ICNJM4556AMIC (NJM4556AM)1

26、IC302 .3RS00018J03CHIP RES. 0 OHM,1/8W,+/-5%,06034R307310 .3RS10218F03CHIP RES. 1K OHM,1/8W,1%,06032R319, 320 .3RS10418J03CHIP RES. 100K OHM,1/8W,+/-5%,06032R305, 306 .3RS15218F03CHIP RES. 1.50K OHM,1/8W,1%,06032R311, 312 .3RS33018J03CHIP RES. 33 OHM,1/8W,+/-5%,06032R317, 318 .3RS6K6518F03CHIP RES 6

27、.65K OHM , 1/8W, 1% 06032R313, 314 .3TR2SD2114KSMTRANSISTOR NPN 2SD2114K SOT-23 (SMD)2Q301, 302 .3JY6314-02-030EARPHONEBASE W/NUT1JK301 .3TE102006026P CONNECTOR SOCKET 901TE12 .3VRR50301502VARIABLE RESISTOR ROTARY 50KA*2 15MM1VR301 .1TWPC09S00201PCB ASSY (CONTROL)1 .2PC09S002PCB CONTROL )DOUBLE LAYE

28、R FR4 350*230MM)1 .2TWPC09S002A01PCB ASSY CONTROL130 .3SWEVQ11L05RTACT SWITCH (5MM) ROUND TERMINAL30SW130 .3AL2-51-4401TRANS NPN 2N4401 40V 1A SOT-236Q712 .3AL2-51-4403TRANSISTOR PNP 2N4403 40V 800MA SOT-236Q16 .3AL2-61-7223IC REG VOLTAGE NJU7223DL1-33 3.3V TO-2521IC901 .3AL2-72-0339IC LM339 ANALOG

29、COMP SOP-144IC601604 .3CS101J5003COGCHIP CAP 100PF/50V +/-5% 0603 (COG)6C106, 107, 305, 306, 311, 312 .3CS102K5003X7RCHIP CAP 1000PF/50V,X7R,+/-10%, SMD 06034C303, 304, 309, 310 .3CS103K5003X7RC.CAP 0.010UF 50V X7R,10% SMD 06034C301, 302, 307, 308 .3CS104K5003X7RCHIP CAP 0.1UF/50V,X7R,+/-10%, SMD 06

30、0338 C1, 100103, 108, 112124, 130, 145, C600609, 801805, 902, 903 .3CS200J5003COGC.CAP 20PF 50V COG 0603 5%2C104, 105 .3DI1SS302SMDIODE 1SS302 SC-702D803, 804 .3DI1SS352SMDIODE 1SS352 HE1A2D801, 802 .3DIEN1N4148WSMDIODE FAST SWICTHING 1N4848W SOD-12335D130, 101, 600603 .3FCN2R1001801FFC connector du

31、al side conn 90 1.0mm 18P1FCN1 .3IC4051BFNIC (TC4051BFN)2IC101, 102 .3IC74AHC1G125GWIC 74AHC1G125G SOT3531IC103 .3IC74HCT04DIC 74HCT04D SO141IC1 .3ICBA4558FIC (4558) SMD1IC600 .3ICLM358MIC LM358M DUAL OPA SOP-81IC801 .3ICTC7W14FIC2IC301, 302 .3ICYH98S01IC WITH PROGRAME1IC100 .4ICPIC18F66J10IC (PIC18

32、F66J10-I/PT)1 .3RS043K10J03CHIP RES. 43K OHM,1/10W,5%,06032R601, 602 .3RS10118F03CHIP RES. 100 OHM, 1/8W, 1%, 06034R625, 626, 807, 808 .3RS10218F03CHIP RES. 1K OHM,1/8W,1%,060317R101, 115126, 605, 606, 619, 620 .3RS10318J03CHIP RES. 10K OHM,1/8W,+/-5%,060310R102, 110114, 307, 308, 315, 316 .3RS10418

33、J03CHIP RES. 100K OHM,1/8W,+/-5%,06032R603, 604 LvlMaterialsSPECSQtyPart Location .3RS10518F03RESISTOR 1M 1% SMD 0603 -ROHS5R100, 803806 .3RS15118J03CHIP RES. 150 OHM,1/8W,5%,060338 R15, 819, 2227, 2932, 34, 35, 600, R61, 62, 71, 72, 201, 202, 211, R212 .3RS15218F03CHIP RES. 1.50K OHM,1/8W,1%,06032R

34、801, 802 .3RS18218J03CHIP RES. 1.8K OHM,1/8W,5%,06032R621, 622 .3RS22318J03CHIP RES. 22K OHM,1/8W,+/-5%,06034R305, 306, 313, 314 .3RS33118J03CHIP RES. 330 OHM,1/8W,+/-5%,06038R28, 33, 303, 304, 311, 312, 628, 629 .3RS39118J03CHIP RES. 390 OHM,1/8W,5%,06032R609, 610 .3RS51118J03CHIP RES. 510 OHM,1/8W

35、,+/-5%,06032R613, 614 .3RS56118J03CHIP RES. 560 OHM,1/8W,5%,06036R301, 302, 309, 310, 611, 612 .3RS62118J03CHP RESISTOR 620 OHM 5%, 1/8W SMD 06032R615, 616 .3RS68018J03CHIP RES. 68 OHM,1/8W,+/-5%,06032R623, 624 .3RS68118J03CHIP RES. 680 OHM,1/8W,5%,06032R607, 608 .3RS68318J03Chip Res. 68K OHM 5% 1/8

36、W, SMD 06031R627 .3RS82118J03CHIP RES. 820 OHM,1/8W,5%,06032R617, 618 .3TR2SC2412KSMTRANSISTOR 536 SMD4Q301304 .3TRBC857BTRANSISTOR BC857B5Q600604 .3XTM10000X6CRYSTAL 10MHZ - 49US SMD1X100 .3BALE48201-5APLASTIC BOSS (LED) 1.5MM30 (LD15, 819, 2224, 35, 600) (LD61, 62, 71, 72) (LD201, 202, 211, 212) .

37、3CN04200010034P CONNECTOR WIRE 2.0 100MM2CN1, 2 .3DIRPI-352DIODE4S301304 .3EC10550TSE. CAPACITOR 1UF/50V(7MM)2EC601, 602 .3EC10625TLEE.CAP LOW ESR 10UF/25V 5*11M1EC100 .3EC47525TSE.CAPACITOR 4.7UF/25V (7MM)1EC904 .3EC47616TSE. CAP (SMALL) 47UF/16V1EC901 .3LD-005HLVLED RED10 LD3, 71, 72, 10, 12, 18,

38、201, 202, 22, LD35 .3LD-005K6CSLED BLUE12 LD1, 4, 61, 62, 8, 9, 14, 16, 17, 211, LD212, 24 .3LD-305SYVLED (AMBER)3LD11, 13, 15 .3LD-511E4YGLED (YELLOW/GREEN)4LD2, 5, 19, 23 .3LDIFR324HDLED 3MM (RED)1LD600 .3TE6220003023P CONNECTOR SOCKET2TE4, 5 .3TE8120004114P HEADER SIL 2MM MALE SHRD2(CN1, 2) .3TWL

39、D5R1O1G301LED BAR 5PCS ROUND HEAD LED2LDB1, 2 .4LD3G4HDALED YELLOW/GREEN f3 ROUND HEAD DIP3 .4LD3O4HWALED ORANGE DIFUSE ROUND HEAD DIP1 .4LDIFR324HDLED 3MM (RED)1 .4PT5104405LED PLASTIC FIX1 .3TWLD7R2O1G4X201LED BAR 7 SQUARE TYPE HORIZANTAL 2X1LDB601 .4LD2G74HDNLED YELLOW/GREEN 7*4.95MM FLAT HEAD DI

40、P8 .4LD2O74HWNLED ORANGE DIFUSE FLAT HEAD DIP2 .4LD2R74HDNLED RED 7*4.95MM FLAT HEAD DIP4 .4PT5104404LED PLASTIC FIX 2X1 .3VRR10301508V.RESISTOR 10KB 22.5MM (DUAL UNIT)1VR600 .3VRR50301503 VARIABLE RESISTOR 50K 2B 22.5MM WITH CENTER BAR 1VR7 .3VRR50301504VARIABLE RESISTOR 50K 2B 22.5MM SINGLE1VR6 .3

41、VRS10303006V.RESISTOR 10K 15MM2VR1, 8 .3VRS10303007V.RESISTOR SLIDE TYPE 10KB 30MM 15MM6VR24, 911 .3VRS10304517V.RESISTOR SLIDE TYPE 10KB 45MM 15MM2VR24, 911 .2TWPC09S002B01PCB ASSY C.FADER133 .3CS104K5003X7RCHIP CAP 0.1UF/50V,X7R,+/-10%, SMD 06031C109 .3TE622000401CONNECTOR (4P 90 DEGREE)1TE1 .3VRS

42、10304516V.RESISTOR 10K 45MM 15MM1VR100 .2TWPC09S002C01PCB ASSY L.FADER132 .3CS104K5003X7RCHIP CAP 0.1UF/50V,X7R,+/-10%, SMD 06032C110, 111 .3TE622000401CONNECTOR (4P 90 DEGREE)1TE1 .3VRS10306014V.RESISTOR 10K 60MM 15MM2VR101, 102 .1BABD-3 CAPACITOR GOOSE MICROPHONE STEREO WITH ADAPTOR JAC 1 LvlMater

43、ialsSPECSQtyPart Location .1CA040218002USB CABLE (BLACK) + CORE1 .1CGSNC02313SNL01INNER CARTON1 .1CTSNC02513SNL02OUTER CARTON (SNC02)1 .1GE39TMV01GUARANTEE CARD1 .1GE39TMV02CUSTOMER INSTRUCTION CARD1 .1GE39TMV03ENVELOPE (BIG)1 .1GE39TMV04ENVELOPE (SMALL)1 .1JKTELE8716N STEREO ADAPTOR 6.3MM PLUG TO 3

44、.55MM JACK1 .1LAC22SNL01LABEL SERIAL NO. (1SET X 5PCS)1 .1LAC52SNL02LABEL (SAFETY)1 .1LAC62SNL03LABEL SERIAL (SOFTWARE)1 .1LAC62SNL07LABEL BARCODE (INNER CARTON)1 .1LAC62SNL08LABEL BARCODE (MASTER CARTON) 1SET=2PCS1 .1OPSNC02SNL01INSTRUCTION MANUAL1 .1OPSNC02SNL02INSTALLATION GUIDE1 .1PE060930BOPOLY

45、BAG (0.0005 KG/PCS)-1900 PCS/KG0.001 .1PLSNC0203POLY FOAM (LEFT)1 .1PLSNC0204POLY FOAM (RIGHT)1 .1SD35055000RJPLAMIN BAG1 .1TSDJAY01DJAY SOFTWARE CD1 .1MT5105501METAL SHAFT2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

46、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?