Alto-L8-mix-sm维修电路原理图.pdf
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1、Service MVersion: 1.1Model: L-8 (8-CHANNEL MIXING CONSOLE WITH DIGITEL EFFECTS) RadioFans.CN 收音机爱 好者资料库CONTENTS1. Specification2. Block Diagram3. Schematic Diagram4. Printed Circuit Board5. Wiring Diagram6. Test Procedure7. Electrical Parts List8. Exploded Views & Mechanical Parts List9. NotesRadioF
2、ans.CN 收音机爱 好者资料库8. TECHNICAL SPECIFICATIONMono input channelsMicrophone input electronically balanced, discrete input configurationFrequency response 10Hz to 55kHz, +3dBDistortion (THD & N) 0.005% at +4dBu, 1kHzGain range 0dB to 60dB (MIC)SNR (Signal to Noise Ratio) 115dBLine input electronically b
3、alancedFrequency response 10Hz to 55kHz, +3dBDistortion (THD & N) 0.005% at +4dBu, 1kHzSensitivity range +15dBu to45dBuStereo input channelsLine input unbalancedFrequency response10Hz to 55kHz,3dB +Distortion (THD & N) 0.005% at +4dBu, 1kHzImpedancesMicrophone input 1.4kOhmChannel Insert return 2.5k
4、OhmAll other inputs 10kOhm or greaterTape out 1kOhmAll other output 120OhmEqualizationHi shelving +15dB 12kHzMid bell +12dB 2.5kHzLow shelving +15dB 80HzLow Cut filter 75Hz, 18dB/oct.Main Mix SectionNoise (Bus noise) Fader 0 dB, channels muted:100dBr (ref.:+4dBu) Fader 0dB, all input channels assign
5、ed and set to UNITY gain:90dBr (ref.:+4dBu) Max output +22dBu balanced XLR,+22dBu unbalanced, 1/4 jacksAUX Return gain range OFF to +20dBAUX Sends max out +22dBuDSP SECTIONA/D and D/A converters 24 bitDSP resolution 24 bitType of effects Hall, Room, Vocal & Plate REVERBS Mono & Stereo DELAY (max DEL
6、AY TIME 500ms) Chorus, Flanger & Vibrato MODULATIONS REV+DELAY, REV+CHORUS, REV+FLANGER, REV+VIBRATO combinationsPresets 256Controls 16-position PRESET BANK Selector 16-position VARIATION selector CLIP LED MUTE SWITCH with LED indicatorRadioFans.CN 收音机爱 好者资料库Power supply Main voltage USA/Canada 1001
7、20V, 60HzEurope 210230V, 50HzU.K./Australia 240V, 50HzPower Consumption 25wattsFuse 100120V : T500mAL210240V : T250mALMain connection Standard IEC receptaclePhysicalNet weight 2.4Kg (5.29lb)Shipping weight 3.5Kg (7.72lb)Dimension (WDH) 245mm268mm24/73mm (9.6410.540.94/2.87)RadioFans.CN 收音机爱 好者资料库123
8、45678ABCD87654321DCBAL8MAP SchTtelSizeFleDateDrawn BySheetRevisionModel No5-Oct-2003 KEVIN LINALTO MIXING CONSOLE11ofL-8 BLOCK DIAGRAMVER030118A2(C)MONO INPUT CHANNELS ( 1-4 )213MIC IN+48V3-BAND EQ12K2.5K80HI PASS213LO CUTSG/OLLEFT-BUSRIGHT-BUSAUX-1AUX-2RIGHT-BUSLEFT-BUSAUX-1AUX-2STEREO INPUT CHANNE
9、LS (5-8)EQ12K2.5K80LEFT-BUSRIGHT-BUSAUX-1AUX-2LEFT-BUSRIGHT-BUSSTEREO AUX RETURN 2RIGHT-BUSLEFT-BUSAUX-1AUX SENDAUX-2MAIN OUTLEFT-BUSRIGHT-BUS2132TK TO MIX213RIGHT-BUSLEFT-BUSTAPE INRIGHT2-TRACK2132TK TO CTRL ROOM213PHONES OUTPUTLEFT METERRIGHT METER75Hz+/-15db3-BAND EQ12K2.5K80+/-15db3c5e1a4d2bLEFT
10、3c5e1a4d2bRIGHTMAIN MIXAUX SEND1TRSAUX SEND2TRSMAIN MIX LEFTTRSMAIN MIX RIGHTTRSCONTROL ROOM OUTPUTLEFTTRSRIGHTTRSPHONESTRS& PHONESCONTROL ROOMLEFTTAPE OUT213213LEVELAUX RETURN2STEREO AUX RETURN 13c5e1a4d2bLEFT(MONO)3c5e1a4d2bRIGHTAUX RETURN1-TRSRNTNTRSRNTNTRSRNTNTRSRNTNPANPHANTOMLINE NGAIN-+POWER-L
11、OMIDHI1212AUX1AUX2LEVELPOSTPREBALANCEAUX1AUX2LEVELLOMIDHISG/OL3c5e1a4d2bLEFT(MONO)3c5e1a4d2bRIGHTTRSRNTNTRSRNTN-213MIC5 IN+48VPHANTOMGAIN-+POWERCHANNEL 5 6 ONLY3c5e1a4d2bINSERTTRSRNTNMIC GAIN:060dBLINE IN TRIM: 15dB-45dBEFX SENDDSP BOARDPRESETSVARIATIONSMUTEDSP FOOTSWITCHEFX SENDLEFT-BUSRIGHT-BUSAUX
12、-1AUX-2EFX SENDAUX-1AUX1RadioFans.CN 收音机爱 好者资料库12345678ABCD87654321DCBAL8MN1.SchTitelSizeFile:Date:Drawn By:SheetRevisionModel No:5-Oct-2003 KEVIN LIN.INPUT STAGE 41ofALTO L-8VER030113A2EQ HI12KHZC13118n(M)VR2B50KR1516K8VR4B50KR1506K8LOR4710KC8747u/25V567U3B4580MR2201MC17922PR2121K1VR3B50KR1371K3MID
13、R196910RC15512n(M)R197910RC13933n(M)C14033n(M)C17112n(M)C16318n(M)C8847u/25VR2855K1VR6W50KAUX-1R22868KR2484K7C1952.2u/50VR1526K8TR2BRTR1BRR2641K5+VCCLD1REDR23630K321U3A4580MVR8W50KPEAKC8947u/25VR2563K9R27036KC18022PVR5W50KC9047u/25VR2845K1AUX-2LEVELAUX-POSTVR7AJQ10KVR7BJQ10KR2875K1R2865K1LEFT-BUSRIG
14、HT-BUSPANPGNDAUX-PRE80HZ2.5KEQ HI12KHZC13218n(M)VR10B50KR1556K8VR12B50KR1546K8LOR5510KC9447u/25V567U6B4580MR2211MC18122PR2131K1VR11B50KR1391K3MIDR198910RC15612n(M)R199910RC14133n(M)C14233n(M)C17212n(M)C16418n(M)C9547u/25VR2895K1VR14W50KAUX-1R22968KR2494K7C1962.2u/50VR1566K8TR4BRTR3BRR2651K5+VCCLD2RE
15、DR23730K321U6A4580MVR16W50KPEAKC9647u/25VR2573K9R27136KC18322PVR13W50KC9847u/25VR2885K1AUX-2LEVELAUX-POSTVR15AJQ10KVR15BJQ10KR2915K1R2905K1LEFT-BUSRIGHT-BUSPANPGNDAUX-PRE80HZ2.5KEQ HI12KHZC13318n(M)VR18B50KR1596K8VR20B50KR1586K8LOR6310KC10147u/25V567U9B4580MR2221MC18222PR2141K1VR19B50KR1411K3MIDR200
16、910RC15712n(M)R201910RC14333n(M)C14433n(M)C17312n(M)C16518n(M)C10347u/25VR2935K1VR22W50KAUX-1R23068KR2504K7C1972.2u/50VR1606K8TR6BRTR5BRR2661K5+VCCLD3REDR23830K321U9A4580MVR24W50KPEAKC9747u/25VR2583K9R27236KC18422PVR21W50KC10647u/25VR2925K1AUX-2LEVELAUX-POSTVR23AJQ10KVR23BJQ10KR2955K1R2945K1LEFT-BUS
17、RIGHT-BUSPANPGNDAUX-PRE80HZ2.5KEQ HI12KHZC13418n(M)VR26B50KR1636K8VR28B50KR1626K8LOR7110KC10247u/25V567U12B4580MR2231MC18522PR2151K1VR27B50KR1431K3MIDR202910RC15812n(M)R203910RC14533n(M)C14633n(M)C17412n(M)C16618n(M)C10447u/25VR2985K1VR30W50KAUX-1R23168KR2514K7C1982.2u/50VR1646K8TR8BRTR7BRR2671K5+VC
18、CLD4REDR23930K321U12A4580MVR32W50KPEAKC10547u/25VR2593K9R27336KC18622PVR29W50KC10747u/25VR2975K1AUX-2LEVELAUX-POSTVR31AJQ10KVR31BJQ10KR2965K1R2995K1LEFT-BUSRIGHT-BUSPANPGNDAUX-PRE80HZ2.5K84U3C4580M84U6C4580MC205100nC206100n+VCC-VCCC289100nC290100n84U12C4580M84U9C4580MJ2POST(PRE)J1POST(PRE)J3POST(PRE
19、)J4POST(PRE)C295100nC296100nC297100nC298100n(SOLTON1K2)用C31947u/25VC31847u/25VC32047u/25VC32147u/25VEQ HIC13518n(M)VR34AB50KR1676K8VR36AB50KR1666K8LOR9610KC11147u/25V321U16A4580MR2241MC18722PR2161K1VR35AB50KR1451K3MIDR204910RC15912n(M)R205910RC14733n(M)C14833n(M)C17512n(M)C16718n(M)C11247u/25VR3125K
20、1VR38W50KAUX-1R23247KR2544K7C1992.2u/50VR1706K8TR10BRTR9BRR2681K5+VCCLD5REDR24422K321U17A4580MVR40AW50KPEAKC11347u/25VR2603K9R28136KC18822PVR37W50KC11647u/25VR3135K1AUX-2LEVELAUX-POSTVR39AJQ10KVR39BJQ10KR3115K1R3105K1LEFT-BUSRIGHT-BUSBALPGNDAUX-PRE80HZ2.5KEQ HIC13618n(M)VR34BB50KR1696K8VR36BB50KR168
21、6K8LOR11110KC11947u/25V567U16B4580MR2251MC19022PR2171K1VR35BB50KR1461K3MIDR206910RC16012n(M)R207910RC14933n(M)C15033n(M)C17612n(M)C16818n(M)C12047u/25V80HZ2.5KR9710KR9810KR23347KR24522K567U17B4580MVR40BW50KC11447u/25VR2613K9R28036KC18922PC11547u/25VLEVELR10010KR9910KJ5POST(PRE)EQ HI12KHZC13718n(M)VR
22、41AB50KR1726K8VR43AB50KR1716K8LOR12010KC12447u/25V321U19A4580MR2261MC19122PR2181K1VR42AB50KR1471K3MIDR208910RC16112n(M)R209910RC15133n(M)C15233n(M)C17712n(M)C16918n(M)C12747u/25VR3175K1VR45W50KAUX-1R23547KR2554K7C2002.2u/50VR1736K8TR12BRTR11BRR2691K5+VCCLD6REDR24622K321U20A4580MVR47AW50KPEAKC12147u/
23、25VR2623K9R28336KC19222PVR44W50KC13047u/25VR3145K1AUX-2LEVELAUX-POSTVR46AJQ10KVR46BJQ10KR3165K1R3155K1LEFT-BUSRIGHT-BUSBALPGNDAUX-PRE80HZ2.5KEQ HI12KHZC13818n(M)VR41BB50KR1756K8VR43BB50KR1746K8LOR12510KC12547u/25V567U19B4580MR2271MC19322PR2191K1VR42BB50KR1481K3MIDR210910RC16212n(M)R211910RC15333n(M)
24、C15433n(M)C17812n(M)C17018n(M)C12647u/25V80HZ2.5KR12110KR12210KR23447KR24722K567U20B4580MVR47BW50KC12847u/25VR2633K9R28236KC19422PC12947u/25VLEVELR12410KR12310KJ6POST(PRE)PCB# L8MN1.PCBRTN-CH1RTN-CH2RTN-CH3RTN-CH4PRE-CH5PRE-CH6PRE-CH7PRE-CH884U16C4580M84U17C4580MC217100nC218100nC219100nC220100n84U20
25、C4580M84U19C4580MC207100nC208100nC201100nC202100nMAIN IN-OUTPUTL8MN1.S01LED DISPLAYL8MN1.S02L8MN1 (1/3)UDASP IN-OUT SECTIONL8MN1.S0312345678ABCD87654321DCBAL8MN1.S01TitelSizeFile:Date:Drawn By:SheetRevisionModel No:5-Oct-2003 KEVIN LIN.STEREO AUX & SENDS & MAIN OUT & 2TK & CTRL R & PHONES32ofALTO L-
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- Alto L8 mix sm 维修 电路 原理图