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Mackie M-2600, Service Manual

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M2600

FR Series Power Amplifier

SERVICE MANUAL

1998, 

1999 MACKIE DESIGNS, INC.

820-180-00

 

 

 

 

 

 

  

 

 

Page 3 is interactive

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Summary of Contents for M-2600

Page 1: ...M2600 FR Series Power Amplifier SERVICE MANUAL 1998 1999 MACKIE DESIGNS INC 820 180 00 Page 3 is interactive Go To Bulletins ...

Page 2: ...2 SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY EXPERIENCED REPAIR TECHNICIANS ONLY ...

Page 3: ...ual is proprietary to Mackie Designs Inc The entire manual is protected under copyright and may not be reproduced by any means without express written permission from Mackie Designs Inc SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY EXPERIENCED REPAIR TECHNICIANS ONLY CONTENTS INTRODUCTION 3 Technical Support 3 Disclaimer 3 BLOCK DIAGRAM 4 SPECIFICATIONS 5 TROUBLESHOOTING TIPS 6 7 RELIABILITY VER...

Page 4: ...EAKER OUT CH 2 SPEAKER OUT CH 1 SPEAKON CH 2 SPEAKON BRIDGED MONO SPEAKON PROTECTION CIRCUITRY MUTE DC OFFSET PROTECT SHORT OUTPUT STAGE CURRENT OUTPUT STAGE VOLTAGE TRANSIENT SOA FLT STEADY STATE SOA FLT OUTPUT DISSIPATION LOW VOLTAGE DETECT IN RUSH CONTROL CH 1 DISSIPATION MUTE LIMITER CHANNEL 2 POWER AMPLIFIER FUSE OUTPUT RELAY 100VDC 115VDC 22VAC FUSE 100VDC 15VDC 15VDC 115VDC METER DRIVE OL 3...

Page 5: ... 2Ω Signal to Noise Ratio 107 dB below rated power into 4Ω Channel Separation 80 dB 1kHz Damping Factor 350 400Hz Input Impedance 24kΩ balanced Input Sensitivity 1 23 volts 4 dBu for rated power into 4 ohms Gain 32 7 dB 43V V Maximum Input Level 9 75 volts 22 dBu Rise Time 5µs Slew Rate Voltage Slew Rate 60V µs Current Slew Rate 30A µs at 2Ω CMRR 40 dB 20Hz to 20kHz Load Angle 8 jx time independen...

Page 6: ...t still takes the same huge amount of time to disassemble the main heatsink assembly After replacing the outputs drivers and pre driver verify that the silicon transistor insulator wasn t damaged No shorts between collector legs and the heatsink On the 170 board check the VI limiters and detectors It is not uncommon to damage these parts when the amplifier fails in a spectacular way Look for short...

Page 7: ...NG TIPS J2 R1 J3 J1 170 board Bias and check points 133 board inrush bypassing 186 board fan speed adjustment Various test points ER ER ER ER ER ER ER ER ER ER ER ER ER ER ER BR BR BR BR BR I SENSE I SENSE I SENSE BR BR BR BR BASE RESISTOR 2 2 OHM 1 4W FUSIBLE ER EMITTER RESISTOR 0 33 OHM 3W BR BR BR BR BR BR BR ER J6 129 channel board ...

Page 8: ...t Verify and re adjust the bias if required Note that the bias will not drift appreciably in a unit that is functioning properly 6 Connect the amplifier directly to the AC line and connect an 8Ω dummy load to both channels Each 8Ω dummy load should have a minimum power rating of 500W Bring the sine wave level up on both channels and verify symmetrical clipping The output will clip somewhere betwee...

Page 9: ...he card stock and after a few minutes the amplifier will come out of mute mode and the cold LED will return 11 Disconnect the loading and remove the input signals Reconnect the amplifier to a Variac and confirm that the idle consumption is roughly 130W or 1 6A as before Connect the amplifier to speakers and verify that it sounds OK with music 12 Perform the following leakage test before returning ...

Page 10: ...xt shorted condition is detected The limiters U6 U5 U7 and their associated components are always in the signal path When the limiter is switched off via SW4 the LDR Light Dependant Resistor is in parallel with the source resistor R39 and will not reduce signal amplitude When the limiter is switched on the LDR U5B is switched as a shunting element to ground The Baker clamp in the power amplifier d...

Page 11: ...tor from rising further There are three diode drops between Q2 s collector and the base of pre driver transistor Q26 on 129 board Once the output from the collector of Q2 makes it to the emitter of the output devices there will be a total of six diode drops in series Three drops up and six down As a result the output transistor emitters will never see a voltage greater than three diode drop below ...

Page 12: ...e These voltages are converted to currents via R101 R129 and R130 and are rectified and summed such that for every volt between the output line and the supply rail 100mV is presented as output This second signal is presented to the other input of multiplier U7 via R133 and R82 Output from U7 is in the form of a current and is converted to a voltage via R136 and U8B The gain of this multiplier is s...

Page 13: ... This eliminates D1 from supplying current to U2A This decreases the reference voltage on U2A pin7 allowing it to work as a linear amplifier With D1 conducting U2A is effectively biased such that it s output is high and the resulting fan speed is low With 136W of output stage dissipation U2A is allowed to linearly amplify the temperature sensor voltage on U1 via R2 and R5 C5 C15 C16 and C17 provid...

Page 14: ...14 Final Assembly The circled item numbers are shown in the parts list on page 20 ...

Page 15: ...15 The circled item numbers are shown in the parts list on page 20 ...

Page 16: ...16 Final Assembly The circled item numbers are shown in the parts list on page 20 ...

Page 17: ...17 Amplifier Heatsink Assembly The circled item numbers are shown in the parts list on page 21 ...

Page 18: ...18 Amplifier Heatsink Assembly The circled item numbers are shown in the parts list on page 21 ...

Page 19: ...19 Amplifier Heatsink Assembly The circled item numbers are shown in the parts list on page 21 ...

Page 20: ... 12AWG A 1 31 700 005 00 SEMS 8 32X1 2 PHP BLKZC A 2 24 700 011 00 MCH 4 40X1 4 BTNSKT BLKOX A 8 25 700 027 00 SEMS 8 32X3 8 PHP BLKZC A 24 26 700 028 00 SEMS 6 32X1 4 PHP BLKZC B 13 27 700 041 04 MCH 6 32X3 8 FL 100DG BLK A 7 30 700 085 03 SCR PHP M3X6 STL BLK ZC A 4 32 700 091 00 SEMS 8 32X3 4 PHP BLKZC A 6 34 700 094 04 MCH 4 40X3 8 82DEG FL BLK A 2 35 700 096 00 BOLT HEX 5 16X3 3 4 GR5 Z A 1 t...

Page 21: ...FAB SEC HEATSINK M2600 A 2 13 550 420 00 FAB BRKT WIRE SHLD M2600 A 1 14 550 421 00 FAB BRKT VAMP SHLD M2600 A 1 15 551 045 00 FAB HEATSINK M2600 B 1 700 005 00 SEMS 8 32X1 2 PHP BLKZC A 4 16 700 010 04 TF 6 32X3 8 PHP BLKZC A 14 17 700 028 00 SEMS 6 32X1 4 PHP BLKZC B 5 18 700 034 00 SEMS 4 40X1 4 PHP BLKZC A 5 19 700 087 00 TF 4 40X5 8 TORX 1 4 WASH A 23 20 700 088 00 TF 4 40X5 8 TORX 3 8 WASH A...

Page 22: ...5 C17 220 011 02 CAPACITOR LYTIC RADIAL T R 100UF 10 C14 C16 C18 C20 220 025 00 CAPACITOR LYTIC RADIAL 1 000UF 10 C21 220 027 02 CAPACITOR LYTIC RADIAL T R 10UF 10 C25 26 220 047 00 LYT 47UF 20 160V RAD 47UF 20 C19 C23 301 009 00 DIODE POWER 1N4004 D5 301 010 00 DIODE POWER 1N5404 D1 2 302 003 00 DIODE ZENER 1N4745 D3 4 310 033 00 TRANSISTOR PNP MJL21193 Q13 14 Q16 17 Q19 20 Q23 24 310 034 00 TRAN...

Page 23: ...T R 100UF 10 C14 C16 C18 C20 220 027 02 CAPACITOR LYTIC RADIAL T R 10UF 10 C23 24 220 047 00 LYT 47UF 20 160V RAD 47UF 20 C19 C22 301 009 00 DIODE POWER 1N4004 D4 301 010 00 DIODE POWER 1N5404 D1 2 302 003 00 DIODE ZENER 1N4745 D3 D5 310 033 00 TRANSISTOR PNP MJL21193 Q15 16 Q18 19 Q21 24 310 034 00 TRANSISTOR NPN MJL21194 Q2 3 Q6 7 Q9 10 Q12 13 310 042 00 TRANSISTOR NPN MJE15032 Q1 Q5 Q8 Q11 310 ...

Page 24: ...R12 13 R16 R18 R30 31 R36 37 R42 43 R46 R48 R54 55 R60 61 R75 76 145 406 00 RESISTOR MF SMT 15K0 1 R20 R62 145 426 00 RESISTOR MF SMT 24K3 1 R15 R19 R33 34 R45 R49 R57 58 200 025 02 CAPACITOR MYLAR T R 0 56 C10 11 C38 39 200 029 02 CAPACITOR MYLAR T R 0 22 C12 13 C20 21 C28 29 C36 37 212 001 00 CAPACITOR CERAMIC SMT 0 01 10 C4 5 C14 19 C23 C25 C30 35 C41 42 212 004 00 CAPACITOR CERAMIC SMT 220PF 5...

Page 25: ...ISTOR MF SMT 73K2 1 R8 R26 145 480 00 RES MF SM 1W 1 88K7 OHM 88K7 1 R3 R22 145 527 00 RESISTOR MF SMT 274K 1 R14 145 547 00 RESISTOR MF SMT 442K 1 R6 R9 R30 R32 R36 R38 212 001 00 CAPACITOR CERAMIC SMT 0 01 10 C1 C3 C6 C10 11 C14 C19 20 C22 23 212 025 00 CAP CER 1UF 25V 10 X7R 1UF 10 C7 9 C12 13 C15 16 220 002 02 CAPACITOR LYTIC RADIAL T R 47UF 20 C2 C4 5 C17 220 014 00 CAPACITOR LYTIC RADIAL KS ...

Page 26: ...CK DISC 250 J1 10 J12 15 400 173 00 CONN QUICK DISC 250 J16 17 00 AND 02 ASSY ONLY 400 173 00 CONN QUICK DISC 250 J18 01 ASSY ONLY 400 242 00 CONNECTOR STR 3P 098 X 1 SHRD J23 450 133 00 PCB M2600 PWR DISTRO AC INRUSH Z3 501 003 00 RELAY SPDT T9AS5D12 24 RL1 510 017 00 FUSE 20A SLO BLO 02 ASSY ONLY F1 Z4 100 VOLT MODELS ONLY 510 018 00 FUSE 15A SLO BLO 01 ASSY ONLY F1 Z6 240 VOLT MODELS ONLY 510 0...

Page 27: ... 140 120 00 RES TF SM 1W 5 82K OHM 82K 5 R147 R150 140 123 00 RESISTOR TF SMT 100K 5 R45 R60 R123 R148 149 140 126 00 RESISTOR TF SMT 150K 5 R3 R31 R36 R54 R107 R116 140 130 00 RESISTOR TF SMT 200K 5 R1 R101 R106 R126 R129 130 140 140 00 RESISTOR TF SMT 510K 5 R8 R55 56 R108 R115 140 143 00 RESISTOR TF SMT 680K 5 R28 140 147 00 RESISTOR TF SMT 1M 5 R9 R33 R92 140 152 00 RESISTOR TF SMT 1M6 5 R5 14...

Page 28: ...D16 25 D27 36 D38 39 D41 42 D44 45 D47 52 D56 57 300 010 00 DIODE SIGNAL SMD RLS245 D26 D37 D40 D43 D46 D53 55 D58 60 302 009 00 DIODE ZENER SMD DL5260B D7 D10 302 010 03 DIODE ZENER SMD DL5232 D8 9 D15 310 042 00 XSTR NPN MJE15032 MJE15032 Q1 310 043 00 XSTR PNP MJE15033 MJE15033 Q2 311 001 00 X SISTOR NPN SMD IMBT4401 Q13 Q22 Q25 311 002 00 X SISTOR PNP SMD IMBT4403 Q7 8 Q21 Q24 Q28 311 007 00 T...

Page 29: ... 0 1 10 C23 24 220 006 00 CAPACITOR LYTIC RADIAL 2200UF 10 C9 12 220 029 00 CAPACITOR LYTIC RADIAL 2200UF 20 C13 14 220 041 00 CAPACITOR LYTIC RADIAL 15 000uF20 C1 8 300 001 00 DIO SIG 1N4148 100V 500MW 1N4148 D19 20 301 009 00 DIODE POWER 1N4004 D1 5 D10 16 301 010 00 DIODE POWER 1N5404 D6 9 301 015 00 DIODE BRIDGE 25A D17 18 310 007 00 XSTR NPN 2N4401 2N4401 Q1 400 060 00 FUSE CLIP PCMT 5MM DIA ...

Page 30: ... 021 00 RESISTOR POT TRIM HORIZ 10KB R1 211 009 00 CAPACITOR CERAMIC AXIAL 0 1 10 C3 C5 C7 8 220 001 02 CAPACITOR LYTIC RADIAL T R 22UF 10 C2 C4 C9 220 027 02 CAPACITOR LYTIC RADIAL T R 10UF 10 C1 C6 300 001 00 DIODE SIGNAL 1N4148 D5 7 301 009 00 DIODE POWER 1N4004 D1 4 310 002 00 TRANSISTOR PNP 2N4403 Q3 310 024 00 TRANSISTOR PNP 2SB817 Q1 310 050 00 TRANSISTOR NPN 2SC1567A Q2 320 011 00 I C LINE...

Page 31: ...face mount work Parts Required Insulated jumper wire 311 010 00 2SC4027 Transistor NPN SMD Q5 140 057 00 220Ω Resistor 0 1W 5 Thick film SMT 0805 R15 and R20 140 084 00 3KΩ Resistor 0 1W 5 Thick film SMT 0805 R14 and R21 Procedure The following modifications must be performed on both V amp boards 1 Remove all cords including the power cable and speaker outputs from the amplifier 2 Remove the ampli...

Page 32: ...GNS SERVICE NEWS Cut trace here Solder here M 2600 modification SSE July 2000 M2600mod pdf page 2 of 2 055 170 00 V AMP board Solder an insulated wire here Cut trace here Amplifier Subassembly Change R14 and R15 Change R20 and R21 ...

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