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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 it´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. $ [email protected]
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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.
IMAGE FUSING
17 May, 1999
Fluorescent Lamp Flicker
Starting and stopping the fusing lamp power every second causes fluorescent lighting in the room to flicker. To reduce this flickering, use SP1-108 to change the cycle from 1 second to 3 seconds. In addition, full power is applied to the fusing lamp gradually, not all at once. This prevents the power in the room from dropping suddenly. This feature is known as �Soft Start�. The machine does this by gradually allowing more power to the fusing lamp over a number of zero-cross cycles of the ac supply. The diagram below shows full power being applied gradually over the duration of 6 zero-cross cycles. With SP1-107, this number can be set to 6, 10, or 20.
A250D888.WMF
Fusing Temperature Control for Thick Paper at the By-pass Tray
When thick paper mode is selected, the machine changes the target fusing temperature from 180°C to 190°C. This also happens when the machine detects A6 size. This is because the machine automatically assumes that the A6 paper is a post card, and post cards should be treated as thick paper.
Pre-heat Mode (Fusing Idling)
When the machine is powered on, or the right door is closed, the hot roller turns for 10 seconds. If the SP1-103 setting is 1 (Yes), when the fusing thermistor detects a temperature lower than 60°C, the hot roller turns for 60 seconds (instead of for just 10 s) after the machine is powered on, or the right door is closed. This maintains conditions for fusing copies made on thick paper during cold weather conditions.
To Prevent Offset when Making Multiple Copies on Small Paper
This prevents the temperature at the ends of the hot roller from being higher than at the center. If the smallest copy paper width detected during a one-minute interval is less than 220 mm, the machine lowers the target fusing temperature by 10°C. Then, during the next minute, if the smallest width detected is less than 220 mm again, the machine lowers the target temperature by another 5°C.
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