QSC-KW122-spk-sch 维修电路原理图.pdf

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6、S, THAT MAY NOTBE DISCLOSED, REPRODUCED OR USEDINFORMATION WHICH IS THE PROPERTYTHIS DOCUMENT CONTAINS PROPRIETARYSIZEC43EFF. DATECHKREVISIONSREVDESCRIPTIONDBABD4321WITHOUT EXPRESS WRITTEN CONSENT FROMQSC AUDIO PRODUCTS.REVCONTRACT NO.AAPPROVED/DATESHEET 1 OF21DATEPLOT DATE:ISSUEDCSCALE00PW4CAGE COD

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43、GPLUMBINGPLUMBINGPLUMBINGPLUMBINGPLUMBINGgnd_chassis1+3.3VDgnd_chassis1gnd_chassis1+3.3VD-15V_D+15V_D-15V_C+15V_Cgnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1-15V_Dgnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1gnd_chassis1-15V_C+15V_C-

44、15V_Cgnd_chassis1gnd_chassis1gnd_chassis1+15V_DTRUETRUE12 34123 645 7123 645 712 3412 341212121212121212121212121121212123121212121212121212121212121212121212121212121211211212311212121212121212 3121211231123311212121212121212121212121111121135 621135 621212212121212121212121212121212121432145512121

45、212121212122312+15V_Dggnd_chassis1ggnd_chassis1ggnd_chassis1g-15V_Cg+15V_Cg-15V_Cggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1g-15V_Dggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1ggnd_chassis1g+15V_Cg-15V_Cg+15V_Dg-15V_Dg+

46、3.3VDggnd_chassis1ggnd_chassis1g+3.3VDggnd_chassis1g11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111112-WAYDNISUB2-WAYUNITY GAIN AT 0DB GAIN POT2-WAY+24DB2-WAY+12DB0DB2-WAY2-WAYSUBSUB2-WAYMIX-OUT2-WAYPRE-EMPHASIS: 10DB 5KHZ2-WAY2-WAY2-WAY2-WAY+36DB-INF AT

47、BOTTOM+10DB AT TOP2-WAY2-WAY2-WAYINPUT STAGE, SIGNAL PRESENCE, GAIN, INPUT SUMMING+6DB GAINF3 = 72KHZ2-WAY2-WAY2-WAY2-WAY2-WAYINV0DB AT CENTER2-WAY2-WAYSUB2-WAY2-WAY2-WAY2-WAY2-WAY2-WAY2-WAYDNI2-WAY2-WAY2-WAY2-WAYINVMIC LED4.75V FROM 15V OR 3.3V2-WAY2-WAY2-WAY2-WAY2-WAYDNI2-WAYDG412DG41215.0K1 PCNT1

48、/10W1 PCNTDG412DG41215.0K50V1/10W1.00K1/10WDG41220.0K1/10W1/10WDG412DG412DG412DG412DG4121/10W1 PCNT100V5 PCNT10PF100MHZ1/10W5K1/10W10.0K1 PCNT1/10W10.0K1 PCNT1/10W1 PCNT27450V5 PCNT5 PCNT120PF2741/10W5 PCNT120PF1/10W1 PCNT10.0K5 PCNT1 PCNT1 PCNT10 PCNTYELLOWMC330781 PCNT1 PCNT200V3.65K1 PCNT1/10W3.6

49、5K1 PCNT1 PCNT7.87K1 PCNT0.1UF25VNANA04751/10W10PF63.4K1/10W1/10W0.1UF25V10 PCNT0.1UF10 PCNT25V200V10 PCNT1 PCNT1 PCNT63.4K2P4T0.1UFLM393A1 PCNT1/10W210.1UF10 PCNT25V25V0.1UF10 PCNT211/10W1 PCNT20 PCNT10UF25V25V20 PCNTMC3307825V10 PCNTMC3307825V2.21K1/10W120PF1/10W1 PCNT10010.0K1 PCNT2.21K1001/10W1

50、PCNT2.21K1/10WMMST3906NA20.0K63.4K1/10W0.1UF2.21K1 PCNT20 PCNT16V4.53KMC330781 PCNT1 PCNT1.0M1 PCNT1/10W14.0K10UF0.1UF10 PCNT16V1/10W1 PCNTLM393A1.00K1 PCNTMMST39061.00K2.871 PCNT1/10W100MHZ10.0K100MHZ1/10WLM393A25V0.1UF10 PCNT1.0M1 PCNT1/10WNA01 PCNT1/10W1 PCNT25V1 PCNT20.0K1/10W20.0K1 PCNT1/10W1K