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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.
TEST MODE
The servo circuit of this model is designed to be adjustment-free and the adjustment value and disc distinction (CD-DA, CD-R and CDRW) etc. is adjusted by the IC. Therefore the adjustment is performed at each TOC reading. The adjustment conditions in the IC of each servo can be monitored in this test mode.
1. How To Start The Mode
OPEN/CLOSE SW SHORT LAND VC
Starting method of the test mode differ depending upon the type of disc being used. This is because the adjustment values of each servo also differ depending upon the type of disc. When using the CD-DA or CD-R 1) Short-circuit TEST LAND and OPEN/CLOSE SW land. 2) Insert the AC plug to the power outlet and install the CD-DA or CD-R disc. 3) Press the PLAY and STOP buttons in this sequence and read the TOC.
TE
S303
FE
IC502
When using the CD-RW 1) 2) 3) Short-circuit the TEST LAND and OPEN/CLOSE SW land. Insert the AC plug to the power outlet and install the CD-RW disc. Press the PLAY, STOP and DSL buttons in this sequence and read the TOC. The LCD should display �CD-r� at this point.
20 7 IC401
IC501
Note 1: If the TOC cannot be read, �ERR� has appeared on the LCD. The following step 2 and 3 can be verified even if the �TOC� cannot be read. Note 2: By repeatedly pressing the DISPLAY/ENTER button all the LCDs light up and the �TOC� display is repeated. Note 3: By repeatedly pressing the DSL button the LCD �CD-r� and �CD-d� are repeated.
RF
When the LCD displays �CD-d� �CD-DA, CD-R is selected. When the LCD displays �CD-r� �CD-RW is selected. Note 4: The test mode is canceled by disconnecting the AC plug and remove the soldering of short land.
2. DISC distinction (confirmation of the FE waveform)
IC451
IC601
This mode enables you to perform a confirmation of the disc distinction. Confirmation method Press the DSL button and select �CD-d� or �CD-r� (Refer to Note 3). 1) Install the disc. 2) Press the MODE button. The LCD will change as follows: Example: Test disc: TCD-782, DISC type select: CD-d Judgment value: 68, Measurement value: 37 CF
IC701
68
61 IC301
37 CF
Measurement value
LCD displays �CD-d� LCD displays �CD-r� No disc No disc CD-RW CD-DA and CD-R
* All numerical values are displayed in HEX.
Judgment value
What disc the IC has selected can be understood according to the judgment value. The decision standard of IC is as follows.
0 < Judgment value < 10
No disc CD-RW CD-DA and CD-R
TEST MODE SHORT LAND
10 < Judgment value < 32 32 < Judgment value < C8 C8 < Judgment value
The state of the FE waveform can be also understood from this judgment.
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