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 67 (click to view)
SA-PT750P / SA-PT750PC
10.26. Disassembly of Open Lock Gear
· Follow (Step 1) to (Step 3) of Item 10.3. · Follow (Step 1) to (Step 3) of Item 10.4. · Follow (Step 1) to (Step 4) of Item 10.5. · Follow (Step 1) to (Step 4) of Item 10.7. Step 1 Rotate the open lock gear in the direction of arrow. (Anti-clockwise)
10.27. Disassembly of Close Lock Gear
· Follow (Step 1) to (Step 3) of Item 10.3. · Follow (Step 1) to (Step 3) of Item 10.4. · Follow (Step 1) to (Step 4) of Item 10.5. · Follow (Step 1) to (Step 4) of Item 10.7. Step 1 Remove 1 screw from the close lock gear.
Step 2 Release the claw of the open lock gear. Step 3 Remove the open lock gear in the direction of arrow.
Step 2 Hook the close lock gear spring to claw (a). Step 3 Rotate the close lock gear in the direction of arrow (1). Step 4 Release claw (b) and pull out the close lock gear in the direction of arrow (2).