Mackie M2600 Wartungshandbuch

M2600FR Series Power AmplifierSERVICE MANUAL1998, 1999 MACKIE DESIGNS, INC.820-180-00 Page 3 is interactiveGo To Bulletins

10Circuit TheoryMuch of the circuitry in the M•2600 we hope is self explanatory from the schematics. Thissection will explain the unique circuits and

11that float along with the amplifier output line (D3 & D4 and associated parts on the 129 board).Common +/-15V supplies are shared throughout the

12SOA protectionThere are two SOA detectors in the M-2600: One that monitors steady state output stagedissipation and one that monitors transient high

13via R33 and R8 and compared against the 5V reference at U3A. If the AC line voltage falls toaround 60% of nominal (around 70VAC), the output of U3A

14Final AssemblyThe circled item numbers are shown in the parts list on page 20

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

16Final AssemblyThe circled item numbers are shown in the parts list on page 20

17Amplifier/Heatsink AssemblyThe circled item numbers are shown in the parts list on page 21

18Amplifier/Heatsink AssemblyThe circled item numbers are shown in the parts list on page 21

19Amplifier/Heatsink AssemblyThe circled item numbers are shown in the parts list on page 21

2 SER

20Item# Part # Description Rev QtyMaster Parts List 090-078-00 M2600 Assembly, 120v1 040-257-00 CBL ASSY 24GA 3P .098 6IN B 12 040-272-00 DIS 14G 101

21Item# Part # Description Rev Qty790-022-00 POLY-SHEET 52CF X 26 4MIL A 1800-087-00 BOX - M2600 A 1800-107-00 BOX SLEEVE M2600 A 1810-076-00 INSER

22055-129-00 Rev A Channel 1 boardPart # Description Value Reference Designator040-261-00 RIB 28GA TRAN 10C .1 3IN J1040-262-00 RIB 28GA TRAN 40C 3IN

23055-130-00 Rev A Channel 2 boardPart # Description Value Reference Designator040-262-00 RIB 28GA TRAN 40C 3IN J3040-269-00 DIS 14GA RED 6 IN QDX2 J5

24055-131-00-01 Rev A Input boardPart # Description Value Reference DesignatorDO NOT STUFF C22 C24040-258-00 RIB 28GA TRAN 20C .1 5IN J6040-259-00 RIB

25055-132-00-01 Rev A Display boardPart # Description Value Reference Designator130-070-00 RESISTOR POT 9MM HORIZ 5KB 20% R2 R34140-057-00 RESISTOR CF

26055-133-00-01 Rev A Power distribution 120VPart # Description Value Reference Designator040-137-00 DIS 18GA GN/YL 96IN QD LUG J11121-077-00 RESISTOR

27055-170-00 Rev A, Voltage amplifier and protectionPart # Description Value Reference DesignatorTEST POINT, PART OF PCB J1-9 J11-16 J24-26100-025-00

28055-170-00 Rev A, continuedPart # Description Value Reference Designator200-011-02 CAPACITOR MYLAR T&R 0.0022 5% C59200-036-02 CAP, METALIZED PO

29055-172-00-01 Rev A Speaker output boardPart # Description Value Reference Designator400-138-01 SPEAKONS HORIZ 4 CKT J2-4400-173-00 CONN QUICK DISC

3INTRODUCTIONThis manual contains basic service information. It is essential that you have acopy of the user’s manual as this contains the complete op

30055-186-00 Rev A 15 Volt supply/fan drive boardPart # Description Value Reference DesignatorTEST POINT, PART OF PCB J1-2100-031-00 RESISTOR CF 180 5

M•2600 amplifier modification instructionsModels affected: All M•2600 amplifiers with serial numbers “AU” or those less than DX10017.Add this mod as p

Cut trace hereSolderhereM•2600 modification SSE July 2000M2600mod.pdf, page 2 of 2055-170-00 V-AMP boardSolder an insulated wire hereCut trace hereAmp

4+–+–CH.1 100 VDC+–CH.1 115 VDC+–CH.2 115 VDCTOROIDAL POWERTRANSFORMERLAMPFUSEMACKIE DESIGNSM•2600BLOCK DIAGRAM9/21/1998LOW CUTFILTERCROSSOVERINVERTER

5Maximum Power at 1% THD, midband:500 watts per channel into 8Ω850watts per channel into 4Ω1300 watts per channel into 2Ω1700 watts into 8Ω bridged260

6Troubleshooting Tips-output failuresAfter a catastrophic failure, it is likely that some of the supply fuses will be blown. Check andreplace any fuse

7AMPOUTBIASADJUSTBIASTEST-15V-AMPQ24Q25R151R146J18SOAPOWERJ19SOATRANSIENTMUTE-VAADD A TEMPORARY SHORT(SEE TROUBLEHOOTING TIPS)J2R1J3J1170 board (Bias

8Reliability Verification ProcedureAfter the unit has been repaired, the following should be done to assure long term reliableoperation. If a distorti

99. Place the amplifier in bridge mode and connect 4Ω loading to the bridge outputs(across both “+” output binding posts). The 4Ω dummy load should ha