Alto-AMX80-dsp-sm 电路图维修手册.pdf

上传人：cc518

文档编号：277023

上传时间：2025-12-20

格式：PDF

页数：20

大小：6.91MB

《Alto-AMX80-dsp-sm 电路图维修手册.pdf》由会员分享，可在线阅读，更多相关《Alto-AMX80-dsp-sm 电路图维修手册.pdf（20页珍藏版）》请在收音机爱好者资料库上搜索。

1、RadioFans.CN 收音机爱好者资料库 CONTENT 1. INTRODUCTION .1 2.TECHNICAL SPECIFICATION.2 3. BLOCK DIAGRAM .3 4. SCHEMATIC DIAGRAM .4 5. WIRING DIAGRAM .6 6. PCB LAYOUT .7 7. TEST PROCEDURE .9 8. EXPLODED VIEW and be sure no friction of all pots. 4. Functions Test: 1). Set all knob to 0 position, TRIM to minim

2、um , and MAIN MIX LEVEL to middle position. 2). Set AP output to -30 dBu, connecting unbalanced input to LINE IN 1, unbalanced output to MAIN OUTPUT, then the output LEVEL should be -45dBu(3dBu) Set TRIM to maximum, output LEVEL should be 0dBu(3dBu)? ? (After test set TRIM back to minimum) 3). Set A

3、P output to +15dBu, connecting unbalanced input to LINE IN 1, unbalanced output to MAIN OUTPUT, then the output LEVEL should be 0dBu(3dBu) THD+N0.005%. Rotate CH LEVEL to maximum, output LEVEL should be +15dBu (3dBu) THD+N0.005%. (After test set CH LEVEL back to middle position) Rotate MAIN MIX LEVE

4、L to maximum, the output LEVEL should be +15dBu (3dBu) THD+N0.008%. (After test set MAIN MIX LEVEL back to middle position, and CH LEVEL to minimum.) 4). Set AP input to 0dBu, connecting unbalanced input with LINE2/3LINE4/5, unbalanced output to MAIN OUTPUT, then the output LEVEL should be 0dBu (3dB

5、u) THD+N0.005%. Rotate CH LEVEL to maximum, the output should be +15dBu (3dBu) THD+N0.005%. (After test set CH LEVEL back to middle position) 5). Set AP input to 0dBu, connecting balanced input to MIC1, and the unbalanced output to MAIN OUTPUT, then the level should be 0 dBu (3dBu), THD+N0.005%. (Af

6、ter test set CH LEVEL back to middle position) Set the MAIN MIX LEVEL knob to maximum, the output level should be +15dBu (3dBu), THD+N0.008%. (After test set MAIN MIX LEVEL back to middle position. And set the CH LEVEL to minimum. ) 6). Set AP input to +15dBu, connecting unbalanced input to LINE IN1

7、, and the unbalanced output to PHONES, the output level should be 0dBu(3dBu) THD+N0.01%. Rotate the CH LEVEL to maximum, output level should be +15dBu (3dBu), THD+N0.006%.( After test set the knob to central position ) Set the MAIN MIX LEVEL to maximum, the output level should be+15dBu (3dBu), THD+N

8、0.01%.( After test set the knob to central position) - 9 - Set the PHONES to maximum, the output level should be+10dBu (3dBu), THD+N0.006%. ( After test set the knob to central position and CH LEVEL to minimum. ) 7). Set AP input to 0dBu, connecting unbalanced input at LINE IN2/3 LINE IN4/5, and the

9、 unbalanced output to PHONES, the output level should be 0dBu(3dBu) THD+N0.01%. Rotate the CH LEVEL to maximum, output level should be +15dBu (3dBu), THD+N0.006%.( After test set the knob to central position ) Set the MAIN MIX LEVEL to maximum, the output level should be+15dBu (3dBu), THD+N0.01%.( A

10、fter test set the knob to central position) Set the PHONES to maximum, the output level should be+10dBu (3dBu), THD+N0.006%. ( After test set the knob to central position and CH LEVEL to minimum. ) 8). Set AP input to +15dBu, connecting unbalanced input at LINE IN1, and the unbalanced output to TAPE

11、 OUT, the output level should be 0dBu(3dBu) THD+N0.005%. Rotate the CH LEVEL to maximum, output level should be +15dBu (3dBu), THD+N0.005%.( After test set the knob to central position ) Set the MAIN MIX LEVEL to maximum, the output level should be+15dBu (3dBu), THD+N0.008%. ( After test set the kno

12、b to central position and CH LEVEL to minimum. ) 9). Set AP input to 0dBu, connecting unbalanced input at LINE IN2/3 LINE IN4/5, and the unbalanced output to TAPE OUT, the output level should be 0dBu(3dBu) THD+N0.005%. Rotate the CH LEVEL to maximum, output level should be +15dBu (3dBu), THD+N0.005%

13、.( After test set the knob to central position ) Set the MAIN MIX LEVEL to maximum, the output level should be+15dBu (3dBu), THD+N0.008%. ( After test set the knob to central position and CH LEVEL to minimum. ) 10). Set AP input to 0dBu, connecting unbalanced input to TAPE IN and the unbalanced outp

14、ut to MAIN OUTPUT, then press the TAPE TO MIX key ,the output level should be 0dBu(3dBu) THD+N0.005%. Set the MAIN MIX LEVEL to maximum, the output level should be+15dBu (3dBu), THD+N0.009%. ( After test repeat press the key once ) 11). Set AP input to 0dBu, connecting unbalanced input to TAPE IN an

15、d the unbalanced output to TAPE OUT, then press the TAPE TO MIX key ,the output level should be 0dBu(3dBu) THD+N0.005%. Set the MAIN MIX LEVEL to maximum, the output level should be+15dBu (3dBu), THD+N0.009%. ( After test repeat press the key once ) 12). Set AP input to 0dBu, connecting unbalanced i

16、nput to TAPE IN and the unbalanced output to PHONES, then press the TAPE TO PHONES key ,the output level should be 0dBu(3dBu) THD+N0.005%. Set the PHONES control to maximum, the output level should be 10dBu (3dBu), THD+N0.009%. ( After test repeat press the key once ) - 10- 6. Random check Connect A

17、MX-80 to high quality amplifier and speaker, to check if the sound is normally. 7. The shipment setting of the AMX-80 Set all the volumes knobs to minimum, all the other knobs to middle position, and all the switches to off position. Test Complete 5. Frequency Response test With unbalance input conn

18、ecting LINE IN of the AMX-80, set the high EQ knob to maximum 30F-C2VR2,VR3 ?0006RC00465potentiometerB5K? RD09F113A225-5K2BT(SAS1);30F-C3VR5,VR10,VR11 9.BOM -13 - ClassPart No. Part NameSpecificationQTYRemark ?0007SD00007integrated circuit BA15218N(use M5218Linstead )(SIP8)/(ROHM)2U15,U16 ?0008HC001

19、26balance MIC jack-RSJY-5042-030G female plug 1801X1 ?0009SA00052L.E.D?3 round(green)long foot 265LD5,LD6,LD7,LD8,LD9 ?0010HC00125MIC jack-RSJY-6351G-02-2508X2,X3,X4,X5,X6,X7,X8,X9 ?0011HI00236push-button switch-RS2 6P PS-92 26A(SELF-LOCK)2SW3,SW4 ?0012SA00053L.E.D?3 round(red)long foot 26mm5LD1,LD2

20、,LD3,LD4,LD10 ?0013HC00528RCA jackSCP6873NS3232T1 4P red white1X10 ?0014RC00359potentiometer W50K? RD09F113A224-50K4BT(SAS1);30F-C1VR4 ?0015RC00361potentiometer W50K? RD12L12CA60B-50K4BT*2(SAS1);30F-C 3VR6,VR7,VR9 ?0016RC00617potentiometer(dual unit)-RSW50K? RD12L12CA606-50KBT*2(SAS);20F-C1VR8 ?0017

21、SA00054L.E.D3m/m round(yellow)long foot 262LD11,LD12 ?0018RC00356potentiometerZ10K? RD09F1130042-10KZ(SAS1);30F1VR1 ?0019NI01782LED spacer supportLEDS-11 11mm12 ?0020MI02702bady-RS-ACTMIX50 2t*29*35*39_V1.01 ?0001MJ00055AL plate2*2000*1000 10.88kg 1 ?0021ME00015color nut3m/m 2 ?0022MF00037washer?3.2

22、*?5.5*1t2 ?0023MG00162screwM3*8 2 ?0024NI02249plastic washerTW-1(TO-220)2 ?0025NC00005micaSB-9500DSP 18*13*0.1t_V1.02 ?0026ND00155EV foam25*20*51 ?0027AC00179tin without lead-RSM705E Sn 3Ag-0.5Cu 9.5148 ?0028HK07193PC board-RSP-AMX-80-SMD1 ?0001SE00011SMD rectifier diodeRLS4148 0.5A (LL-34) 8D1,D2,D

23、3,D4,D5,D6,D9,D10 ?0002RD00224SMD precise resistor 1/10W100K? 1% 0603 4R132,R133,R134,R135 ?0003CI00059SMD ceramic capacitor 0603100PF/50V NPO 5% 10 C38,C39,C40,C41,C42, C43,C44,C45,C46,C47 ?0004CI00075SMD ceramic capacitor 06030.1uF/50V Y5V +80,-20%27 C80,C81,C82,C83,C84, C85,C86,C87,C88,C89, C90,C

24、91,C92,C93,C94, C95,C96,C97,C98,C99, C100,C101,C102,C103, C116,C117,C119 ?0005RD00214SMD precise resistor 1/10W10.0K? 1% 0603 37 R5,R6,R7,R23,R50,R51,R52, R53,R54,R55,R56,R57,R58, R59,R60,R61,R62,R63,R64, R65,R66,R67,R68,R69,R70, R71,R72,R73, R136,R137,R140,R85,R131, R138,R139,R14,R15 ?0006RD00272SM

25、D precise resistor 1/10W10.0? 1% 06031R125 ?0007RD00275SMD precise resistor 1/10W110? 1% 06031R126 ?0008RD00069SMD fixed resistor 1/10W120? 5% 0603 8 R99,R100,R101,R102, R103,R104,R105,R106 ?0009RD00200SMD precise resistor 1/10W150? 1% 0603 1R127 ?0010RD00282SMD precise resistor 1/10W1.00K? 1% 06033

26、R110,R111,R128 ?0011RD00201SMD precise resistor 1/10W1.50K? 1% 0603 3R39,R74,R75 ?0012RD00292SMD precise resistor 1/10W1.00M? 1% 06031R31 ?0013RD00219SMD precise resistor 1/10W20.0K? 1% 0603 9 R78,R79,R80,R81,R82,R8 3,R84,R91,R92 ?0014CI00109SMD ceramic capacitor 060320PF/50V C0G5%(C1608C0G1H200JT)/

27、TDK2C37,C110 - 14 - ClassPart No. Part NameSpecificationQTYRemark ?0015CI00051SMD ceramic capacitor 060322PF/50V C0G5%(C1608C0G1H220JT)/TDK26 C9,C10,C48,C49,C50,C51, C52,C53,C54,C55,C56,C57, C66,C67,C68,C69,C70,C71, C72,C73,C74,C75,C76,C77, C112,C113 ?0016RD00106SMD fixed resistor 1/10W27K? 5% 0603

28、2R116,R117 ?0017RD00265SMD fixed resistor 1/10W27? 5% 06031R12 ?0018RD00203SMD precise resistor 1/10W2.00K? 1% 0603 1R130 ?0019RD00329SMD precise resistor 1/10W30.0K? 1% 06034R93,R94,R95,R96 ?0020RD00370SMD precise resistor 1/10W33.2K? 1% 06032R37,R38 ?0021RD00407SMD precise resistor 1/10W36.0K? 1%

29、06035R32,R33,R34,R35,R36 ?0022SF00053transistorMMBT3906(SOT23)/(PHI)2TR3,TR4 ?0023RD00406SMD precise resistor 1/10W3.60K? 1% 06034R8,R9,R97,R98 ?0024RD00414SMD precise resistor 1/10W3.90K? 1% 06031R20 ?0025CI00063SMD ceramic capacitor 0603470PF/50V NPO 5?3C1,C2,C3 ?0026RD00078SMD fixed resistor 1/10

30、W470? 5% 0603 2R123,R124 ?0027RD00339SMD precise resistor 1/10W47.0K? 1% 06033R21,R46,R90 ?0028CI00055SMD ceramic capacitor 060347PF/50V C0G5%(C1608C0G1H470JT)/TDK1C115 ?0029RD00298SMD precise resistor 1/10W47.0? 1% 06032R1,R2 ?0030RD00341SMD precise resistor 1/10W4.70K? 1% 06036R40,R41,R42,R43,R44,

31、R45 ?0031RD00371SMD precise resistor 1/10W51.1K? 1% 06032R3,R4 ?0032RD00094SMD fixed resistor 1/10W5.1K? 5% 0603 9 R47,R48,R49,R76,R77, R86,R87,R88,R89 ?0033RD00210SMD precise resistor 1/10W5.11K? 1% 0603 6R10,R11,R13,R16,R114,R115 ?0034RD00211SMD precise resistor 1/10W5.49K? 1% 0603 2R112,R113 ?003

32、5RD00510SMD precise resistor 1/10W6.20K? 1% 06034R25,R28,R29,R30 ?0036RD00326SMD precise resistor 1/10W6.80K? 1% 06035R17,R19,R22,R26,R27 ?0037RD00082SMD fixed resistor 1/10W820? 5% 0603 1R129 ?0038SF00033SMD transistor-RS-ACTBC846B(SOT23)/(PHI)6TR1,TR2,TR5,TR6,TR7,TR8 ?0039RD00327SMD precise resist

33、or 1/10W8.20K? 1% 06032R108,R109 ?0040SE00008SMD rectifier diodeDA204K/T-146 1D7 ?0041SG00116SMD integrated circuitBA10339FV E2(SSOP-B14)/(ROHM)2U13,U14 ?0042RD00213SMD precise resistor 1/10W7.50K? 1% 0603 1R18 ?0043HK07170PC board-RSP-AMX-80-AI1 ?0001HB02128PCB-RSAMX-80_VER0612221 ?0002CC00074mylar

34、 capacitor-RS-ACT0.01uF/100V 3%2C104,C105 ?0003RA01260fixed resistor 1/4W120?2R107,R122 ?0004SA00159rectifier diode1A/1000V IN40072D14,D15 ?0005SA00328Schottky barrier diode-RS1N5817(DO-41)2D12,D13 ?0006CB00242electrolytic capacitor22uF/35V ?5*11mm2C4,C5 ?0007CC00059mylar capacitor0.033uF/100V 3%2C7

35、8,C79 ?0008CC00063mylar capacitor-RS0.0039uF/100V 10%1C36 ?0009RA01259fixed resistor 1/4W47?4R118,R119,R120,R121 ?0010CB00194electrolytic capacitor47uF/25V ?5*11mm36 C8,C12,C13,C14,C15,C16,C17,C 18,C19,C20,C21,C22,C23, C24,C25,C26,C27,C28,C29, C30,C31,C32,C33,C34,C35, C58,C59,C60,C61,C62,C63, C64,C6

36、5,C108,C109,C111 ?0011CB00334electrolytic capacitor-RS47uF/50V ?6.3*11mm2C6,C7 ?0012HA01933jump2.5mm 1CN2 ?0013RA01413fixed resistor 1/4W2.7K?2R141,R142 - 15 - ClassPart No. Part NameSpecificationQTYRemark ?0044SG00558integrated circuit-RS4580M(SOP8)/(YW)12 U1,U2,U3,U4,U5,U6,U7,U 8,U9,U10,U11,U12 ?0029CB00255electrolytic capacitor1000uF/10V ?8*11mm 5mm1C11 ?0030SD00238integrated circuitMC78L18ACP(TO92)/(ON)1IC3 ?0033HJ00002dessicant10g 1 ?0034NB04919carton-RSAMX-80 ALTO_V1.11 - 16 -