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thanks a lot.
without the service manual my handycam was going to the trash.
good job, go on.
bye
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This service manual is a good copy of the original, complete and fully readable. It is really useful to repair my Tv set following its clear instructions.
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Excellent quality. Easy process to download. No issues or problems at all - was exactly what I was looking for and needed. Great service.
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I was having a hard time finding the problem with this Mackie 1604 unit. I didn't have a schematic. Went looking on the web and found your site and the price was more then reasonable. Ordered it and within the hour had the manual and within 15 minutes had the unit fixed. Best $4.99 I ever spent. Thank you.
Doug
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This is a service manual in every sense of the word ( French and German versions of the text are included, as well as English..)
There are explanations of the mechanical and electrical functions, plenty of mechanical drawings, and the needed schematics. The quality of the scanning is excellent - all the component values are clearly legible - and very usefully there are pcb component layouts, so you can find a component on the schematic, and then very quicky pinpoint its physical location on the relevant pcb.
I cannot see how I can give this manual any less than the maximum 5 stars! Great value for money, which will pay for itself immediately. Excellent all round!
DV-05, DV-S5
7.4 CIRCUIT DESCRIPTION
7.4.1 VIDEO SIGNAL PROCESSING BLOCK
7 CXD1854Q Block
The major processing functions of the CXD1854Q block are: (1) Field-correlative cyclic digital noise reduction (2) Block noise reduction (3) Horizontal contour compression These functions are performed for the Y signal and not performed for the C signal.
(1) Field Correlative Cyclic Digital Noise Reduction
For eight-bit digital video data input to the CXD1854Q, noise reduction is achieved through the subtraction of data of one field from the corresponding data one field before. This data is stored in a buffer zone where the subtraction process takes place and this buffer zone is a 512Kbit DRAM. The noise signal detected as a result is sent to a non-linear circuit. If the difference is larger than a specific value, it is regarded as �a change in picture,� and no canceling calculation is made.
(2) Block Noise Reduction
The Horizontal Block Noise components in the field which are generated through DCT for the MPEG encoding are rejected. They are detected through comparing input data between blocks. The noise signal detected as a result is sent to a non-linear circuit. If the difference is larger than a specific value, it is regarded as �a change in picture,� and no canceling calculation is made.
(3) Horizontal Contour Compensations
This is performed by emphasizing components in the region of 2.3MHz.
7 MC44724A Block
The digital video encoder MC44724A changes the digital component signals to analog video signals (Y signal, C signal, Cr signal and Cb signal). It is added the digital video encoder for the digital processing of CXD1854Q.
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