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
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!
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Text excerpt from page 33 (click to view)
2-9. Cleaning 2-10. Use of Extension Board EX-351
2-9. Cleaning
The temperature in the unit increases when dust attaches to the filter and when the air flow is disturbed. This will badly influence the performance and life of the unit. Be sure to clean the filter with attached to the front panel when the filter is clogged with dust. n � Turn off the power before cleaning the filter. � Be sure to remove the air filter from the front panel before cleaning. Tools
2-10. Use of Extension Board EX-351
Extension Board EX-351 : Part No. J-6185-310-A Extension board EX-351 is applicable for the following plug-in boards to be inspected.
Model Name BVS-A3232
Card Board CPU-94 MX-82
BKDS-RS1690
CPU-94
Procedure Vacuum cleaner 1. Remove the plug-in board in the procedure as shown Cleaning 1. Remove the front panel. (Refer to �2-1. Removal of Cabinet�.) 2. Remove the filter from the front panel. in Section 1-7 �Optional Board Installation�. 2. Move the board lever in the direction of the arrow and insert completely the extension board along the board guide rail.
Board guide rail
Filter Board lever
Extension board (EX-351)
3. Remove the dust on the filter using a vacuum cleaner. 4. Attach the filter in the reverse order of steps 1 to 2.