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Nice to have the service manual for the Sony DCR-TRV345E now. The document is of excellent quality.
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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]
� The primary function of the NCU, which is shared by facsimile and telephone units, is to switch the line to the facsimile unit or to the telephone; switching is carried out by the line relay. � Since the direct connection of a facsimile equipment to the line is not allowed in order to protect the line, it is essential to insert a line transformer between the line and the facsimile equipment to insulate them from each other in a direct current band. The above two components, a line relay and a line transformer, are the minimum requirements for the NCU of the facsimile equipment. � If an external telephone is connected to the facsimile equipment, the NCU should have a loop current detector to identify the on-hook/off-hook state by detecting the loop current. � If the facsimile equipment has an automatic answering facility, the NCU should be equipped with a calling signal detector which detects calling signals and notifies the CPU. � The circuit related to a line transformer allows the line transformer to be invariant by selecting the constants of the parts in this circuit so as to conform to the communications regulations or codes of each country. In addition to the above basic components of the NCU, the following components may also be required depending on the additional functions of the facsimile equipment: � The dial pulse generator generates dial pulses within the facsimile equipment. � The surge absorber is a protection circuit which absorbs lightning surges. � The noise filter eliminates noise, including radiation noise, which would otherwise enter the communications line. � The high-impedance transformer circuit detects the remote activation, and F/T switching sent from the line in the on-hook state without any interference on the line. � The MODEM-telephone switching circuit changes the connection of the line transformer to the telephone circuit or to the MODEM. Note that the MODEM always monitors the signals on the line even if the telephone is selected. � The telephone circuit includes two amplifiers; one for amplifying the output signals of the handset microphone and the other for amplifying the receive signals from the communications lines to generate the handset receiver sound.
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