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MACKIE HR824 26 pages English-only Service Manual contains:
1) HR824 technical overview with the description of front and rear panel switches.
2) HR824 specs
3) Block Diagram
4) Wiring Diagram
5) Packaging management
6) Spare part & final assembly list (for PCB rev A and B) + exploded view
7) Test Procedures (where, how to measure voltage...) including Test Point diagram on the PCB.
8) IC and Transistor charts.
Excellent guide: very clear, good scan quality enabling us to print readable diagram :-)
Note:
Mackie HR824 make extensive use of surface mount devices (SMD). Service on the HR824 must
only be undertaken by experienced service technicians with the right tools, experience and patience to perform surface mount rework when needed.
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This Service manual is very well scanned and its clean to read, no any anti-theft words that un-english could understand. I got my CCD600 working with this manual and itΒ΄s clear shematics :)
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I was very pleased with the service provided and was surprised at how good the quality was of the manual. I thought it may be a third generation copy or so, but it is as good as the websites that charge 3 times this much. I repair some electronics for family and friends without charge, so this is perfect for me. Thank you very much.
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The service was great and the document was also great. Highly recommend!!!!
If anyone has a users manual... Please email me. need one. $ filippo611@aol.com
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I needed a service manual as the display on my oscilloscope was very dim. I thought I'd give owner-manuals.com a try, as they advertised a huge number of manuals. Sure enough they had one listed. I bought it hoping it would be useful... actually, I bought it hoping it would be readable! I've had manuals from online sources in the past, and been very disappointed. Not this time! An excellent manual, complete, and very readable. Using it I fixed my 'scope, and as such the manual was an investment that paid off manyfold. Do I have any complaints? One very minor one - The circuit diagrams could have been scanned at a higher resolution, as some of the details were a little difficult to make out - not impossible, just not as easy as my old eyes would like! Overall, I'm very satisfied with my manual, and I will certainly be using this company again. Well done.
KDC-3025/325/5026/G
COMPONENTS DESCRIPTION
â SWITCH UNIT (X16-2500-xx)
Ref. No. IC1 IC2 Q1,Q4 Application/Function LCD Driver Remote Control IC REMO ON SW Drives LCD Controls the unit. The power supply of IC2 is turned on when base level goes âLâ. Operation/Condition/Compatibility
â ELECTRIC UNIT (X34-3090-xx)
Ref. No. IC1 IC2 Application/Function System µ-COM E.Vol & N.C.MPX Operation/Condition/Compatibility Controls FM/AM tuner, the changer, CD mechanism, Panel, volume, and tone. Controls the source, volume, tone and FM multiplex detector. Bu5V (5V) Audio8V (8V) FM+B (8V) AM+B (8V) P-CON ANT-CON SW1 1.5~3.0 IC3 Power Supply IC 3.5~5.0 7.0~ SW2 2.0~3.0 4.0~ IC4 IC6 IC8 Q1 Q2 Q3 Q4 Q21 Q22 Q23 Power IC Muting logic IC Reset IC Surge Detection BACK-UP Detection ACC Detection SW 5V Servo Regurator Servo SW Conrtol Power Supply IC DSI lights when the base is âLâ. Q151 DSI Driver DSI turns off when the base is âHâ. DSI turns on and off when panel is taken off. Q152 Q153,Q154 Q201 Q351 Q352 Q354 Q355 Q356 Panel 5V SW ILLUMI Control Noise buffer Pre Mute SW Pre Mute SW Pre Mute SW Pre Mute SW Pre Mute SW Mutes the Rear Lch when the base is âHâ. Mutes the Rear Rch when the base is âHâ. Drives the Pre Mute sw (Q351, 352, 355, 356) when the base is âLâ. Mutes the Front Lch when the base is âHâ. Mutes the Front Rch when the base is âHâ. When the panel is attached, the base goes âLâ, turning the Tr ON to supply 5V to the panel. When panel is taken off, panel 5Vcut off. ILLUMI lights when the base of Q153 is âHâ. ILLUMI FM ON ILLUMI AM ON Audio ON Audio P-CON ON Audio P-CON P-ANT ON OUT
Amplifies the front L/R and the rear L/R to 50W maximum. Controls logic for muting. âLâ when detection voltage goes below 3.5V or less. âLâ when the back-up voltage becomes more than 24V (momentary power down). âHâ when the back-up voltage becomes less than 24V. âLâ when B.u is present. âHâ when B.u is absent or momentary power down is detected. âLâ when Acc is present. ON when the base is âLâ.
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