Alto-aMicTube-pre-sm 电路图 维修手册.pdf

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1、Service Manual Version: 1.1 Model: aMICTUBE STEREO TUBE PREAMP RadioFans.CN 收音机爱 好者资料库 CONTENTS 1. Specification. 1 2. Block Diagram. 1 3. Schematic Diagram. 3 4. Printed Circuit Board. 11 5. Wiring Diagram. 1 6. Test Procedure. 2 7. Electrical Parts List 11 8. Exploded Views. 1 9. Notes. RadioFans.

2、CN 收音机爱 好者资料库 Input XLR Impedance5K Ohm 1/4” High Z1M Ohm ConnectorsNeutrikTM Combo Output XLR Balanced100 Ohm 1/4” Unbalanced100 Ohm Panel Controls Tube Drive0dB to +40dB Gain0dB to +30dB Phase Reverse 20 dB Pad +48V Phantom Power Performance THD+Noise90dB Power Supply Rejection98dB Amplifier TypeD

3、ual Servo Meter 8-Digit LED-24dBu to +18dBu Physical Weight1.05Kg Dimensions 131(W)X116(D)X44(H)mm(5.16”X4.57”X1.7”) ChassisSteel PanelBrushed Aluminum(? LTO Style) Power Supply TypeLinear,External Input18VAC Power14Watts TransformerExternal Wall Mount 1.Specifications RadioFans.CN 收音机爱 好者资料库 1234 A

4、 B C D 4321 D C B A 1 2 3 4 5 6 X1 X2 X3 2 1 3 4 2 1 3 22 11 33 Block Diagram U1(INA163) TUBE-12AX7 2 1 3 2 1 3 4 2 1 3 22 11 33 2 1 3 1 2 3 4 5 6 X1 X2 X3 U2(INA163) POWER SUPPLY VOLTAGE REGULATORAC18V +12VDC +15VDC -15VDC +48VDC PHANTOM CH1 MICROPHONE INPUT CH2 MICROPHONE INPUT CH1 OUTPUT CH2 OUTP

5、UT PHASE PHASE + PAD(20dB) + PAD(20dB) 2.Block Diagram 12345678 A B C D 87654321 D C B A C64 104P C65 104P C66 10U C67 10U 84 U11C 2068DD -15V +15V TR9 HR R39 47K5 TR8 HR R38 47R 1/4W +15V C6 103P LD17 GR LD18 GR LD19 GR LD20 GR 7 8 9 P SW2C PS-42E85L 7 8 9 P SW3C PS-42E85L 1 2 3 SW4A PS-22E85L 1 2

6、3 SW5A PS-22E85L LD21 RED LD22 RED 4 5 6 P SW1B PS-42E85L (PWR ON) (PHANTOM) (PAD-CH1) (PAD-CH2) (PHASE-CH2) (PHASE-CH1) 8 9 14 U9C LM339 10 11 13 U9D LM339 1 6 7 U9B LM339 5 4 2 U9A LM339 8 9 14 U10C LM339 10 11 13 U10D LM339 1 6 7 U10B LM339 5 4 2 U10A LM339 LD9 GR LD10 GR LD11 GR LD12 GR LD13 GR

7、LD14 GR LD15 YEL LD16 RED TR6 HR R4 47K5 TR5 HR R2 100R 1/4W +15V R104 100R R105 200R R106 402R R107 806R R108 1K58 R109 3K24 R110 6K34 R111 8K06 +15V R103 110R -15V 8 9 14 U7C LM339 10 11 13 U7D LM339 1 6 7 U7B LM339 5 4 2 U7A LM339 8 9 14 U8C LM339 10 11 13 U8D LM339 1 6 7 U8B LM339 5 4 2 U8A LM33

8、9 LD1 GR LD2 GR LD3 GR LD4 GR LD5 GR LD6 GR LD7 YEL LD8 RED TR4 HR R3 47K5 TR3 HR R1 100R 1/4W +15V R95 100R R96 200R R97 402R R98 806R R99 1K58 R100 3K24 R101 6K34 R102 8K06 R94 110R -15V+15V C50 104P C53 104P OUTPUT1OUTPUT2 C1 103P C2 103P 3 2 1 U11A 2068DD R49 47K5 R72 1K00 R17 47K5 C62 1uF -15V

9、5 6 7 U11B 2068DD D7 DA204K R50 47K5 R74 1K00 R18 47K5 C63 1uF -15V 312 U10E LM339 312 U9E LM339 312 U8E LM339 312 U7E LM339 +15V -15V C57 104P C60 104P C56 104P C59 104P C52 104P C55 104P C51 104P C54 104P (-24) (-18) (-12) (-6) (0) (+6) (+12) (+18) 3 2 1 D8 DA204K D5A DA204K D6A DA204K CN8-14 CN9-

10、14 12 34 56 78 910 1112 1314 1516 CN8HEADER 8X2 12 34 56 78 910 1112 1314 1516 CN9HEADER 8X2 CN8-1CN8-2 CN8-3CN8-4 CN8-6 CN8-8 CN8-10 CN8-12 CN8-14 CN8-16 CN8-5 CN8-7 CN8-9 CN8-11 CN8-13 CN8-15 CN9-1 CN9-3 CN9-5 CN9-7 CN9-9 CN9-11 CN9-13 CN9-15 CN9-2 CN9-4 CN9-6 CN9-8 CN9-10 CN9-12 CN9-14 CN9-16 CN8

11、-15 CN8-2 CN8-16 +48V+15V CN9-15 CN9-2 CN9-16 +48V-15V 1 2 3 SW1A PS-42E85L PHANTOM ON (+48V) PHANTOM OFF +48V R5 47K5CN8-1 7 8 9 P SW1C PS-42E85L +48V R6 47K5 CN9-1 R19 619R R33 619R 10 11 12 P SW2D PS-42E85L 4 5 6 P SW2B PS-42E85L R31 169R R20 619R R34 619R 10 11 12 P SW3D PS-42E85L 4 5 6 P SW3B P

12、S-42E85L R32 169R CN8-3 CN8-4 CN8-5 CN8-6CN9-6 CN9-5 CN9-4 CN9-3 VR1A20K (CH1 INPUT GAIN) VR2A20K (CH2 INPUT GAIN) CN8-7CN8-8 CN9-8CN9-7 R64 100R VR3B C1K2P R82 100R R25 100R VR3A C1K2P R81 100R CN8-10 CN8-9 CN8-12 CN8-11 R66 100RVR4B C1K2P R65 100R R45 100RVR4A C1K2P R67 100R CN9-10 CN9-9 CN9-12 CN

13、9-11 4 5 6 P SW4B PS-22E85L ( PHASE ) 4 5 6 P SW5B PS-22E85L ( PHASE ) CN8-10 CN8-14 CN8-13 CN9-10 CN9-14 CN9-13 VCH1-IN VCH1-OUT GND +48V +12V VCH2-IN VCH2-OUT R121 10K0 R120 10K0 5 19 28 37 46 PT2 GT2 KT2 HT2 HT1 PT1 GT1 KT1 HM TB1TUBE-12AX7 1 2 3 4 5 6 7 8 CN4 CON8 R122 10R R123 4K53 +15V AMTUBEF

14、P.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 7-Mar-2002 C.C.LIN ALTO Mobile : ALPHAMICtube FRONT PANEL BOARD 11of ALPHAMICtubeVER020307A3 3.Schematic Diagram 12345678 A B C D 87654321 D C B A 9 4 5 6 11 3 121014 1 8 U1 INA163 R47 2K21 C22 10UR21 20K0 R22 20K0 ZD4 H2 ZD3 H2 ZD2 H2 Z

15、D1 H2 C11 47/63VZ C12 47/63VZ 3 2 1 U6A 2068DD C35 104P C36 104P R13 402R R15 1M00 C9 104P R35 51R1 C30 104P C31 104P C23 10U C20 10U C21 10U -15V +15V C18 220P 1. H2 = Zener Diode MMSZ5242BT1NOTE: 2. LOW BUMP ON 3. LOW BUMP OFF C9,C12,C39,C42=104PR21,R32=4K99R73,R28=200K C9,C39,R21,R66 =0ROMIT:C12,

16、C42,R28,R32,R73,R77 R27 10R0 R28 10R0 9 4 5 6 11 3 121014 1 8 U2 INA163 R48 2K21 C24 10UR23 20K0 R24 20K0 ZD8 H2 ZD7 H2 ZD6 H2 ZD5 H2 C13 47/63VZ C14 47/63VZ C32 104P C33 104P C25 10U -15V +15V C19 220P R29 10R0 R30 10R0 PS: H2=MMSZ5242 411 U3E TL074CD -15V +15V 5 6 7 U6B 2068DD R14 402R R16 1M00 C1

17、0 104P R36 51R1 3 2 1 U4A TL074CD R5510K0 R56 10K0 R63 1K00 R61 10K0 84 U6C 2068DD C58 104P C61 104P C71 10U C72 10U -15V +15V HR=MMBT3906LT1 / 2SA1036K(R) CH1-INX3 CH1-INX2 CH1-INT CH1-INTS CH2-INTS CH2-INT CH2-INX2 CH2-INX3 CH1-OUT C46 100P R62 100R R26 301K R70 301R C15 0.47U C40 0.47U R44 1M00 R

18、71 301R 10 9 8 U3C TL074CD 12 13 14 U3D TL074CD R42 1M00 C45 100P R83 100R R68 301K R76 1M00 C41 0.47U C17 0.47U R43 1M00 5 6 7 U3B TL074CD 3 2 1 U3A TL074CD R41 1M00 C8 104P 5 6 7 U4B TL074CD C48 0R R73R85 C47 R86 0R LOW BUMP 1 2 3 4 5 6 7 8 CN3 CON8 10 9 8 U4C TL074CD R5310K0 R52 10K0 R57 1K00 R54

19、 10K0 CH2-OUT C16 100P R37 100R R69 301K R51 301R C43 0.47U C42 0.47U R78 1M00 R84 301R 10 9 8 U5C TL074CD 12 13 14 U5D TL074CD R75 1M00 C26 100P R40 100R R46 301K R80 1M00 C44 0.47U C7 0.47U R77 1M00 5 6 7 U5B TL074CD 3 2 1 U5A TL074CD R79 1M00 C27 104P 12 13 14 U4D TL074CD C29 0R R59R58 C28 R60 0R

20、 LOW BUMP +48V+12V 1 2 3 4 5 6 X3 X2X1 J1 COMB-XLR S SS R RS T TS CH1-INPUT R7 169R 1/4W R9 6K81 R10 6K81 C3 100/63V 1 2 3 4 5 6 X3 X2X1 J2 COMB-XLR S SS R RS T TS CH2-INPUT R11 6K81 R12 6K81 C4 100/63V R8 169R 1/4W 1 2 3 4 5 6 7 CN5 7P-2.0 +48V GND +15V -15V CH1-OUT CH2-OUT C49 104P C5 104P C34 10U

21、 C38 10U 411 U4E TL074CD -15V +15V C68 104P C69 104P C37 10U C39 10U 411 U5E TL074CD -15V +15V 12 34 56 78 910 1112 1314 1516 CN1 HEADER 8X2 12 34 56 78 910 1112 1314 1516 CN2 HEADER 8X2 CN1-1CN1-2 CN1-3CN1-4 CN1-6 CN1-8 CN1-10 CN1-12 CN1-14 CN1-16 CN1-5 CN1-7 CN1-9 CN1-11 CN1-13 CN1-15 CN2-1 CN2-3

22、CN2-5 CN2-7 CN2-9 CN2-11 CN2-13 CN2-15 CN2-2 CN2-4 CN2-6 CN2-8 CN2-10 CN2-12 CN2-14 CN2-16 CN1-1 CN1-3 CN1-4 CN1-5 CN1-7 CN1-9 CN1-11 CN1-13 CN1-15 CN1-2 CN1-6 CN1-8 CN1-10 CN1-12 CN1-14 CN1-16 +48V+15V CN2-1 CN2-3 CN2-5 CN2-7 CN2-9 CN2-11 CN2-13CN2-15 CN2-2 CN2-4 CN2-6 CN2-8 CN2-10 CN2-12 CN2-14 CN

23、2-16 +48V-15V FrontPanel AMtubeFP.sch CN1-10 CN2-10 R0 0R +12V C78 47U C79 47U AMTUBEMN.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 7-Mar-2002 C.C.LIN ALTO Mobile : ALPHAMICtube MAIN BOARD 11of ALPHAMICtubeVER020225A3 1234 A B C D 4321 D C B A R25 20K0 R79 20K0 C40 47P R67 20K0 R77

24、20K0 R80 10K0 C41 47P R40 100R R41 100R 2 1 3 22 11 33 J4 LJB0661 R87 100K R90 100K C44 47/50VNP C45 47/50VNP R86 100K R68 6K81 C46 47/50VNP 2 1 3 4 J3 BAL-MALE 12 13 14 U4D TL074CD 3 2 1 U4A TL074CD 10 9 8 U4C TL074CD R37 100R R45 51R1 -15V +15V C34 104P C37 104P C26 10U C27 10U 411 U4E TL074CD C38

25、 104P C39 104P C28 10U C29 10U -15V 411 U5E TL074CD +48V R26 20K0 R81 20K0 C42 47P R69 20K0 R78 20K0 R82 10K0 C43 47P R43 100R R44 100R 2 1 3 22 11 33 J6 LJB0661 R89 100K R91 100K C47 47/50VNP C48 47/50VNP R88 100K R70 6K81 C49 47/50VNP 2 1 3 4 J5 BAL-MALE 12 13 14 U5D TL074CD 3 2 1 U5A TL074CD 10 9

26、 8 U5C TL074CD R42 100R R46 51R1 1 2 3 4 5 6 7 CN4 7P-2.0 +15V -15V CH1-OUT CH2-OUT C8 100/63V D3 1N4004 D4 1N4004 R83 10K R92 150R C68 M104P C7 100/63V U13 LM7815CT U14 LM7915CT D1 1N4004 D2 1N4004 C66 47/25VZ C70 M104P C64 2200/25V C67 47/25VZ C65 1000/25V C69 M104P +15V C5 100/63V C17 100/63V -15

27、V ZD9 1N5261B TR7 TIP122 (47V) +48V J7 AC IN (AC 18V) CH1-OUTPUTCH2-OUTPUT C73 100/63V U15 LM7812CT C74 47/25VZ C75 M104P +12V +12V C76 47/50VNP C77 47/50VNP AMTUBEPU.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 7-Mar-2002 C.C.LIN ALTO Mobile : ALPHAMICtube REAR BOARD 11of ALPHAMICtu

28、beVER020225A3 AMTUBEFP Top Layer AMTUBEFP Top Solder Mask AMTUBEFP Bottom Layer AMTUBEFP Bottom Solder Mask AMTUBEFP Top Scilkscreen AMTUBEFP Drill Drawing - NCDrill File Report For: AMTUBEFP.PCB9-May-200216:26:29 - Layer Pair : TopLayer to BottomLayer ASCII File : NCDrillOutput.TXT EIA File: NCDril

29、lOutput.DRL ToolHole SizeHole Count PlatedTool Travel - T124mil (0.6096mm)7229.54 Inch (750.27 mm) T231mil (0.7874mm)14030.14 Inch (765.64 mm) T339mil (0.9906mm)2814.01 Inch (355.84 mm) T479mil (2.0066mm)49.78 Inch (248.33 mm) T583mil (2.1082mm)96.04 Inch (153.35 mm) T687mil (2.2098mm)410.82 Inch (2

30、74.86 mm) - Totals257100.33 Inch (2548.29 mm) Total Processing Time : 00:00:00 4.Printed Circuit Diagram AMTUBEMN Top Layer AMTUBEMN Top Solder Mask AMTUBEMN Bottom Layer AMTUBEMN Bottom Solder Mask AMTUBEMN Top Scilkscreen AMTUBEMN Drill Drawing - NCDrill File Report For: AMTUBEMN.PCB9-May-200218:2

31、2:27 - Layer Pair : TopLayer to BottomLayer ASCII File : NCDrillOutput.TXT EIA File: NCDrillOutput.DRL ToolHole SizeHole Count PlatedTool Travel - T124mil (0.6096mm)5826.73 Inch (678.84 mm) T231mil (0.7874mm)4420.77 Inch (527.61 mm) T335mil (0.889mm)3211.01 Inch (279.53 mm) T439mil (0.9906mm)1513.68

32、 Inch (347.41 mm) T547mil (1.1938mm)209.43 Inch (239.45 mm) T6138mil (3.5052mm)28.74 Inch (221.92 mm) T783mil (2.1082mm)4NPTH6.86 Inch (174.24 mm) T8138mil (3.5052mm)2NPTH15.44 Inch (392.11 mm) - Totals177112.64 Inch (2861.12 mm) Total Processing Time : 00:00:01 AMTUBEPU Top Layer AMTUBEPU Top Solde

33、r Mask AMTUBEPU Bottom Layer AMTUBEPU Bottom Solder Mask - NCDrill File Report For: AMTUBEPU.PCB9-Mar-200218:30:07 - Layer Pair : TopLayer to BottomLayer ASCII File : NCDrillOutput.TXT EIA File: NCDrillOutput.DRL ToolHole SizeHole Count PlatedTool Travel - T124mil (0.6096mm)16.10 Inch (155.01 mm) T2

34、28mil (0.7112mm)1410.41 Inch (264.49 mm) T331mil (0.7874mm)5720.11 Inch (510.86 mm) T439mil (0.9906mm)2914.11 Inch (358.42 mm) T547mil (1.1938mm)410.33 Inch (262.28 mm) T659mil (1.4986mm)1212.09 Inch (307.05 mm) T763mil (1.6002mm)410.41 Inch (264.44 mm) T8110mil (2.794mm)29.26 Inch (235.31 mm) T9126

35、mil (3.2004mm)19.77 Inch (248.28 mm) T1071mil (1.8034mm)4NPTH10.90 Inch (276.85 mm) - Totals128113.50 Inch (2883.01 mm) Total Processing Time : 00:00:01 AMTUBEPU Top Scilkscreen AMTUBEPU Drill Drawing PCB:AMTUBEFP PCB:AMTUBEMN PCB:AMTUBEPU Test Procedures(aMICTUBE) Required Equipment Audio Precision

36、 System 2 with APWin software 100MHz oscilloscope connected to APS2 Analyzer Signal Monitor output (Ch. A and Ch. B) Connection Mode Use Audio Precision System 2 analog unbalanced (XLR) inputs/output 11.1 Test Procedures for aMICTUBE Amplitude response test On PC: -Load file:amictube_amplitude(APWin

37、 File menu / Open / Test) Test Connections: -Output A of Audio Precision System Two CH1 input of the device under test. -Output B of Audio Precision System Two CH2 input of the device under test. -CH1 output of the device under test A input of Audio Precision System Two. -CH2 output of the device un

38、der test B input of Audio Precision System Two. On the aMICTUBE: -Set INPUT GAIN to zero. -Set DRIVE to maximum. Start the sweep (F9) and control the results (Page3 Graph) in the following conditions: SEKAKU06/25/02 11:48:07 ColorLine StyleThickDataAxis RedSolid1Anlr.Level ALeft MagentaSolid1Anlr.Le

39、vel ALeft -30 +25 -25 -20 -15 -10 -5 +0 +5 +10 +15 +20 d B m 2020k501002005001k2k5k10k Hz 11.2 aMICTUBE-ALTO-230V- Structure Needing Material Detail List Midprod NONO.QuanityUnit Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK:

40、MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MAR

41、K: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK:

42、MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: Item NameSpecificNOMaterial No MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: MARK: 8.Exploded Views