Alto-L12-mix-sm维修电路原理图.pdf

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Alto-L12-mix-sm维修电路原理图.pdf

Service MODEL: L-12/16/20 Version 2.0RadioFans.CN 收音机爱好者资料库CONTENTS1. Introduction.22. Specification.33. Black Diagram54. Schematic Diagram.65. PCB Layout256. Wiring Diagram.417. Test Procedure.428. Exploded Views & Mechanical Part List.469. BOM.49RadioFans.CN 收音机爱好者资料库ALTO L12,L16,L20 FEATURESCHANNEL STRIPS.? AUX send 1/2 switch-able to PRE/POST fader? 60 mm high precision faders? Each input channel with Mute, SOLO function, low cut filters-75Hz, 18 dB/OCT and Overload& signal present LEDs.? Group “SUB” 1-2”, “SUB3-4”, or “main L-R” mix send switch-able? 4 AUX sends with master control and SOLO function per channel: 2 PRE/POST faderswitch-able for monitoring/digital EFX application, 2 post fader(for internal digital EFX oras external send)? 4-band fixed EQ on stereo line channels? 3-band EQ with Swept mid on microphone channels? Channel inserts and direct output on each mono channel plus main mix inserts for flexibleconnection of outboard equipment.MASTER SECTION? 24-bit DSP effect built in? True stereo 9-band graphic EQ? Adjustable mono main output by control level? BNC socket for connecting gooseneck lamps.? Separate outputs for 4 submaster control to enable more flexible routing? Separate subwoofer crossover and output? Special XLR Subwoofer out with 75Hz low pass? Control room/phone matrix? 2 headphone outputs298. TECHNICAL SPECIFICATIONMono input channelsStereo input channelsImpedancesEqualizationDSP SectionMicrophone inputelectronically balanced, discrete input configurationFrequency response10Hz to 55kHz, +3dBDistortion (THD & N)0.005% at4dBu, 1kHz+Gain range0dB to 60dB (MIC)SNR (Signal to Noise Ratio)115dBLine inputelectronically balancedFrequency response10Hz to 55kHz,3dB+Distortion (THD & N)0.005% at4dBu, 1kHz+Sensitivity range+15dBu to45dBuLine inputBalanced/unbalancedFrequency response10Hz to 55kHz,3dB+Distortion (THD & N)0.005% at +4dBu, 1kHzMicrophone input1.4kOhmChannel Insert return2.5kOhmAll other inputs10kOhm or greaterTape out1kOhmAll other output120OhmHi shelving+15dB 12kHzMid bell (mono)+15dB 100Hz to 8kHzLow shelving+15dB 80HzLow Cut filter75Hz, 18dB/oct.Hi Mid (stereo)+15dB 3kHzMid low (stereo)+15dB 500HzA/D and D/A converters24 bitDSP resolution24 bitType of effectsHall, Room, Vocal & Plate REVERBSMono & Stereo DELAY (max DELAY TIME 650ms)Chorus, Flanger & Reverb MODULATIONSREVERB+DELAY,REVERB+CHORUS,Presets256Controls16-position PRESET Selector16-position VARIATION selectorPEAK LEDMUTE SWITCH with LED indicatorREVERB+FLANGER combinationsMain Mix SectionNoise (Bus noise)Fader 0 dB, channels muted:100dBr (ref.:+4dBu)Fader 0dB, all input channels assignedand set toUNITY gain:90dBr (ref.:+4dBu)Max output+22dBu balanced XLR,22dBu unbalanced, 1/4 jacks+AUX Returns gain range-to +15dBAUX Sends max out+22dBu30Power supplyMain voltageUSA/Canada100120V, 60HzEurope210240V, 50HzU.K./Australia240V, 50HzPower Consumption70 wattsFuse100120V : T800mAL210240V : T500mALMain connectionStandard IEC receptacle12356789101112ABCD12111098765321DCBACH2-CH12 IDENTICAL TO CH1213CH1+48V3-BAND EQ12K100Hz-8kHz80HI PASSSG/OLLEFT-BUSRIGHT-BUSAUX1AUX2RIGHT-BUSLEFT-BUSAUX1AUX2STEREO INPUT CHANNELS (CH13-20)LEFT-BUSRIGHT-BUSAUX1AUX4MAIN OUTLEFT-BUSRIGHT-BUSTAPE INRIGHT2TK2TKLEFT METERRIGHT METER75Hz+/-15db4-BAND EQ12K50080+/-15dbMAIN MIXMAIN MIX LEFTTRSMAIN MIX RIGHTTRSPHONE BTRSLEVELPHONESLEFTTAPE OUT21323LEVELSTEREO AUX RTN13c5e1ad2b3c5e1ad2bLEVEL-+TRSRNTNTRSRNTNPANPHANTOMCH1GAIN-+POWER-+LO(FREQ)HIAUX2AUX1FADERPOSTPREBALANCEFADER3c5e1ad2bLEFT(MONO)3c5e1ad2bRIGHTTRSRNTNTRSRNTN-+-+MIC GAIN:060dBLINE IN TRIM:+15dB-45dBAFL-LAFL-RSOLO(PFL)SOLOON()AFL-LAFL-RSOLO(PFL)SOLOON()AFL-LAFL-RSOLO(PFL)EFX SENDLEFT-BUSRIGHT-BUSAUX1AUX2AFL-LAFL-RSOLO(PFL)DFX SENDAFL LAFL RSOLO(PFL)PFL LEDLOGICSOLO CTRLSOLO ACTIVE(LEVEL SET)SOLO MODEPFL()AFL()3c5e1ad2bINSERTTRSRNTNSUB1SUB2SUB1SUB2SUB2SUB1AUX SEND1LEVELAUX SEND 4LEVEL+4dB/MIC+4dB/MICSUB1LEVELSUB OUTSUB1TRSSUB1 TO MIXRIGHT-BUSLEFT-BUSSUB1/2MA N MIXCONTROL ROOM SOURCEASSIGN2TKRIGHTLEFTMIDLOM-H HIL-M3K12K500803KSUB3SUBSUB3SUBAUX3AUXSUB4SUB3AUX3AUXMUTEAUX4AUX3AUX3AUX4-20dB=SG(FLICKER)+15dB=OL(GLOW)3c5e1ad2bLINE OUTTRSRNTNDIRECT OUT(CH1-CH12 ONLY)213 MIC IN+48VPHANTOMGAIN-+POWERCH13/14 & RIGHT-BUSLEFT-BUSSUB2SUB1ASSIGNSUB4SUB3AUX2AUX2AUX1POSTPREAUX4AUX3AUX3AUX4SOLO LEDSOLO LEDCH15/16 ONLYCHS 17/18 & 19/20 ONLYSTEREO TRIM-20dB=SG(FLICKER)+15dB=OL(GLOW)MUTEMONITORAUX1AUX1DFX TORIGHT-BUSSTEREO AUX RTN23c5ead2b3c5ead2bLEVEL-+TRSRNTNTRSRNTN-+MONITORDFX TOAUX2LEFT-BUSSTEREO AUX RTN33c5e1ad2b3c5e1ad2bLEVEL-+TRSRNTNTRSRNTN-+STEREO AUX RTN43c5e1ad2b3c5e1ad2bLEVEL-+TRSRNTNTRSRNTN-+ASSIGN TOC-R/PHONESCTRL LCTRL RSOLOON()AFL-LAFL-RSOLO(PFL)SOLO LEDRIGHT-BUSLEFT-BUSSUB2SUB1AUX RTN4SUB4SUB3RIGHT-BUSLEFT-BUSCTRL-R-RCTRL-R-L(AUX SEND 2/3 IDENTICAL)AFL-LAFL-RSOLO(PFL)AFL-LAFL-RSOLO(PFL)SOLOON()SOLOON()3c5e1ad2bMAIN INSERTTRSRNTN3c5e1ad2bMAIN INSERTTRSRNTN3c5e1ad2bMONO OUTPUTTRSRNTNMONO LEVEL3c5e1ad2bAUX/DFX SENDTRSRNTN3c5e1ad2bAUX SENDTRSRNTNAUX SEND 1/2/3AUX SEND 42TK TO MAIN2TK TO MAINSUB1SUBMIX 2 3 4 IDENTICAL TO SUB1(TRIM)(TRIM)4-BAND EQ+/-15dbMIC INLINE INCTRL ROOM OUTPUTLEFTTRSRIGHTTRSPHONES OUTPUTPHONE ATRSLEVELCTRL ROOMSUB3/AFL-LAFL-RSOLO(PFL)CTRL/LCTRL/RFROM SUB2FROM SUB3FROM SUBDSP BOARDPRESETSVARIAT ONSMUTEDSP FOOTSWITCHFX OUT LFX OUT RCTRL-R-RCTRL-R-LDFX SENDDFX SENDSG/OLHI PASS75HzLEFT(MONO)RIGHTLEFT(MONO)RIGHTLEFT(MONO)RIGHTLEFT(MONO)RIGHTAUX RETURNSOLOASSIGN TORIGHT-BUSLEFT-BUSGEQGEQEQ ONL20MAP.SchT telSizeF le:Da e:Drawn By:SheetRevis onModel No:1-Oct-2003 KEVIN LIN.ALTO MIX NG CONSOLE11ofL-20 BLOCK DIAGRAMVER030125A1LOG CAUX2AUX1DFX RETURN TOALTO L-20BLOCK DIAGRAM(PRELIMINARY)3c5e1ad2bSUB1 INSERTTSRNTNIDENTICAL TO SUB1 INSERTSUB INSERT 2 3 4DFX OUTTRS12345678ABCD87654321DCBAL12PU1.SchTitelSizeFile:Date:Drawn By:SheetRevisionModel No:1-Oct-2003 BOW12ofALTO L12VER030530A3PCB# L12PU1.PCBL12PU1(1/2)L12PU1L12PU1-2 SCH3c5e1a4d2bX4JY-6351G-02-250R6120RR8120RCTRL ROOM OUT3c5e1a4d2bX3JY-6351G-02-250R7120RR5120RLEFTRIGHTCTRL-R-LCTRL-R-RCTRL-R-RCTRL-R-L3c5e1a4d2bX5JY-6351G-02-250TRSRNTNMAIN-INS-LNS1RTN1R9120R3c5e1a4d2bX6JY-6351G-02-250TRSRNTNMAIN-INS-RNS2RTN2R10120RMAIN-INS-LMAIN-INS-RMAIN-LMAIN-RMAIN-INSERT3c5e1a4d2bX19JY-6351G-02-250AUX SEND1R40120RR39120R3c5e1a4d2bX20JY-6351G-02-250AUX SEND2R38120RR42120RTRSRNTNTRSRNTNAUXSEND1AUXSEND23c5e1a4d2bX24JY-6351G-02-250AUX SEND3R41120RR47120R3c5e1a4d2bX25JY-6351G-02-250AUX SEND4R46120RR48120RTRSRNTNTRSRNTNAUXSEND3AUXSEND4AUXSEND1AUXSEND2AUXSEND3AUXSEND4AUX SENDMAIN-INS-LMAIN-INS-RMAIN-R-3MAIN-L-3MAIN-LMAIN-RMONO-LEVELCTRL-R-RCTRL-R-LDFXOUT-LDFXOUT-RAUXRTN1-LAUXRTN1-RAUXRTN2-RAUXRTN2-LAUXRTN3-RAUXRTN3-LAUXRTN4-RAUXRTN4-LAUXSEND1AUXSEND2AUXSEND3AUXSEND4SUB1-LSUB2-RSUB3-LSUB4-R+VCC-VCC(TO L12MN1)(TO L12MN1)C247u/25V567U1B4580MR5036KC422PC347u/25VVR1W50KR5530KC147u/25VR493K6MONO-LEVEL3c5e1a4d2bX21JY-6351G-02-250TRSRNTNMONOR43120RR27120RC6100nC5100n84U1C4580M+VCC-VCC3c5e1a4d2bX34JY-6351G-02-250FOOTSWITCHDIRECT3c5e1a4d2bX7JY-6351G-02-250DIRECT1R15120RR12120RTRSRNTNDIRECT1DIR-OUT13c5e1a4d2bX8JY-6351G-02-250DIRECT2R16120RR13120RTRSRNTNDIRECT2DIR-OUT23c5e1a4d2bX9JY-6351G-02-250DIRECT3R17120RR14120RTRSRNTNDIRECT3DIR-OUT33c5e1a4d2bX18JY-6351G-02-250DIRECT4R18120RR37120RTRSRNTNDIRECT4DIR-OUT43c5e1a4d2bX35JY-6351G-02-250DFX OUTDFXOUT-LDFXOUT-RR56120RR57120RMAIN-R-2MAIN-L-2FOOTSWFOOTSW123456789101112131415161718CN32.0-18P-B24A123456789101112131415161718CN22.5-14P-B24AEFXRTN-LEFXRTN-R12345678ABCD87654321DCBAL12PU1-2.SchTitelSizeFile:Date:Drawn By:SheetRevisionModel No:11-Jun-2003BOW22ofALTO L12VER030530A3PCB# L12MN1.PCBL12PU1-2(2/2)3c5e1a4d2bX16JY-6351G-02-250RTSRNTNMAIN R (UNBAL)3c5e1a4d2bX17JY-6351G-02-250TRSRNTNMAIN L (UNBAL)R36120RR11120RR34120RR35120R(BALANCED)213X32JY-5030-030G213X33JY-5030-030GMAIN OUT RIGHTLEFT123SW1APS-42E85L789PSW1CPS-42E85L456PSW1BPS-42E85L101112PSW1DPS-42E85LR28120RR29120RR515K1R30120RR44120RR545K1R31120RR32120RR535K1R33120RR45120RR52 5K1MAIN-R-3MAIN-R-2MAIN-L-3MAIN-L-2DIR-OUT1DIR-OUT2DIR-OUT3DIR-OUT4(TO L12PU2)MAIN-R-2MAIN-L-2MAIN-R-3MAIN-L-33c5e1a4d2bX22JY-6351G-02-250STEREO AUXLEFT 13c5e1a4d2bX26JY-6351G-02-250RIGHT 1RETURN1(MONO)AUXRTN1-LAUXRTN1-RAUXRTN1-LAUXRTN1-R3c5e1a4d2bX27JY-6351G-02-250STEREO AUXLEFT 23c5e1a4d2bX28JY-6351G-02-250RIGHT 2RETURN2(MONO)AUXRTN2-LAUXRTN2-RAUXRTN2-RAUXRTN2-L3c5e1a4d2bX23JY-6351G-02-250STEREO AUXLEFT 33c5e1a4d2bX29JY-6351G-02-250RIGHT 3RETURN3(MONO)AUXRTN3-LAUXRTN3-RAUXRTN3-RAUXRTN3-L3c5e1a4d2bX30JY-6351G-02-250STEREO AUXLEFT 43c5e1a4d2bX31JY-6351G-02-250RIGHT 4RETURN4(MONO)AUXRTN4-RAUXRTN4-LSTEREO AUX RETURN3c5e1a4d2bX13JY-6351G-02-250TRSRNTNSUB- NS3R23120R3c5e1a4d2bX2JY-6351G-02-250TRSRNTNINSERT-SUB3R4120RR3120RSUB2-RSUB3-LSUB4-R3c5e1a4d2bX15JY-6351G-02-250TRSRNTNSUB- NS4R24120R3c5e1a4d2bX14JY-6351G-02-250TRSRNTNINSERT-SUB4R26120RR25120R3c5e1a4d2bX10JY-6351G-02-250TRSRNTNSUB- NS1R19120R3c5e1a4d2bX1JY-6351G-02-250TRSRNTNINSERT-SUB1R2120RR1120RSUB1-L3c5e1a4d2bX12JY-6351G-02-250TRSRNTNSUB- NS2R20120R3c5e1a4d2bX11JY-6351G-02-250TRSRNTNINSERT-SUB2R22120RR21120REFXRTN-LEFXRTN-R12345CN12.5-14P-B24A123456789101112ABCD121110987654321DCBAL12PU2.SchTitelSizeFileDateDrawn BySheetRevisionModel No11-Jun-2003BOWMAIN INPUT STAGE21ofALTO L12VER030530A3PCB# L12PU2.PCBL12PU2 PU2L12PU2-2.SCHR10_14R7TRIM2 CH2R11_14R7TRIM1 CH2C15_1nINS2 CH2C14_11nC19_11000u/10VR12_14R7R15_11K50R3_12K49L CUT2 ON321U2_1A4580ML CUT2 OFR25_15K11INS1 CH2C6_122PC7_147u/25V567U2_1B4580MR30_162KR28_11K3R19_120KR18_120KC8_147u/25VC16_10.22u/50VC17_10.22u/50VC18_10.22u/50VR29_16K82134X3_1JY 5042 030G3c5e1a4d2bX1_1JY 6351G 02 250TRSRNTNINSERT 23c5e1a4d2bX2_1JY 6351G 02 250C11_1330PLINE IN GAIN +15-45dBC1_110nMIC GAIN 0-60dBR20_1470RR7_12K49C13_147u/63VC12_147u/63VR14_15K62R13_15K62C3_122PC9_122u/35VR24_15K11C10_122u/35VR27_110K0R26_110K0R2_16K81R1_16K81LINE IN2MIC 2PH PWRTR3_1HRTR1_1A1316R16_11K50VCC+VCCVCCR4_12K49R17_120KR9_12K49C2_110nR21_1470RTR4_1HR+VCCTR2_1A1316VCC+VCCD1_1BAS316R5_12K49+VCCTR5_1HRR6_12K49VCCR8_12K49R22_15K11R23_15K11C4_122PC5_122P567U1_1B4580M321U1_1A4580MR10_24R7TRIM2 CH3R11_24R7TRIM1 CH3C15_21nINS2 CH3C14_21nC19_21000u/10VR12_24R7R15_21K50R3_22K49L CUT3 ON321U2_2A4580ML CUT3 OFR25_25K11INS1 CH3C6_222PC7_247u/25V567U2_2B4580MR30_262KR28_21K3R19_220KR18_220KC8_247u/25VC16_20.22u/50VC17_20.22u/50VC18_20.22u/50VR29_26K82134X3_2JY 5042 030G3c5e1a4d2bX1_2JY 6351G 02 250TRSRNTNINSERT 33c5e1a4d2bX2_2JY 6351G 02 250C11_2330PLINE IN GAIN +15-45dBC1_210nMIC GAIN 0-60dBR20_2470RR7_22K49C13_247u/63VC12_247u/63VR14_25K62R13_25K62C3_222PC9_222u/35VR24_25K11C10_222u/35VR27_210K0R26_210K0R2_26K81R1_26K81LINE IN3MIC 3PH PWRTR3_2HRTR1_2A1316R16_21K50VCC+VCCVCCR4_22K49R17_220KR9_22K49C2_210nR21_2470RTR4_2HR+VCCTR2_2A1316VCC+VCCD1_2BAS316R5_22K49+VCCTR5_2HRR6_22K49VCCR8_22K49R22_25K11R23_25K11C4_222PC5_222P567U1_2B4580M321U1_2A4580MR10_34R7TRIM2 CH4R11_34R7TRIM1 CH4C15_31nINS2 CH4C14_31nC19_31000u/10VR12_34R7R15_31K50R3_32K49L CUT4 ON321U2_3A4580ML CUT4 OFR25_35K11INS1 CH4C6_322PC7_347u/25V567U2_3B4580MR30_362KR28_31K3R19_320KR18_320KC8_347u/25VC16_30.22u/50VC17_30.22u/50VC18_30.22u/50VR29_36K82134X3_3JY 5042 030G3c5e1a4d2bX1_3JY 6351G 02 250TRSRNTNINSERT 43c5e1a4d2bX2_3JY 6351G 02 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